Consulta: subjectFacets:"Fertilizer"
Registros recuperados: 173
Data/hora: 05/06/2024 07:24:56

Los programas gubernamentales para promover el desarrollo agrícola : estudio de caso del programa fertilizantes 2007 en el estado de Guerrero
Provedor de dados: 32
Autores: Díaz José, Julio.
En 2007, el Gobierno del Estado de Guerrero apoyó a cerca de 300,692 productores de maíz con el subsidio de fertilizantes y asesoría técnica, con el objeto de mejorar la producción de granos básicos. El presente estudio se realizó para evaluar los principales resultados en la instrumentación del programa de fertilizantes en su ejercicio 2007. Se diseñó y aplicó una encuesta para recabar información sobre los beneficiarios del programa, los alcances que se tuvieron, la percepción de los beneficiarios acerca del programa y las características del sistema de producción de maíz en el estado. Los resultados encontrados, demuestran que los objetivos de incrementar el rendimiento de la producción de maíz en el estado no han sido suficientes, ya que sólo se logró...
Tipo: Tesis
Palavras-chave: Fertilizante; Agricultura sustentable; Guerrero; Maestría; Desarrollo Rural; Fertilizer; Sustainable Agriculture.
Ano: 2008
URL: http://hdl.handle.net/10521/1635

Evolution of Forest Systems: the Role of Biogeochemical Cycles in Determining Sustainable Forestry Practices
Provedor de dados: 7
Autores: Flueck, Werner T.; National Council for Scientific and Technical Research (CONICET), Argentina; Institute of Natural Resources Analysis, Universidad Atlantida Argentina; Swiss Tropical Institute, University of Basel; wtf@deerlab.org.
The exploitation of natural resources such as forests leads to sustainable forest management (SFM). The key question is how to define and parametrize &amp;#8220;sustainable use.&amp;#8221;  Promoting forest use that conserves spatial characteristics of forest landscapes and the structure and composition of forest stands was proposed as a way of maintaining elements of biodiversity such as species richness and genetic variation. However, to establish the parameter space for sustainable forest use, it is essential to consider the nutrient requirements of forest systems, that is, plants and animals, the need for fertilizer application, and the effects on biogeochemical cycles, a cornerstone of biological evolution and, thus, biodiversity. The use of forest...
Tipo: Peer-Reviewed Response
Palavras-chave: Biogeochemical cycle; Fertilizer; Macronutrients; Micronutrients; Phosphorus; Selenium; Sustainable forest management.
Ano: 2009

MECHANIZED AND INDIVIDUALIZED APPLICATION OF N-P-K IN COMBINED OPERATIONS IN SUGARCANE
Provedor de dados: 70
Autores: Carneiro,Franciele M.; Furlani,Carlos E. A.; Gírio,Lucas A. da S.; Silva,Rouverson P. da; Malheiros,Euclides B.
ABSTRACT: A new concept of fertilizer machine is under development and shows as differential individually fertilizer application, that is sources of N, P and K are applied separately for the purpose of improving the distribution efficiency of the quantities applied. The aim was to compare the quality of the individualized mechanized distribution of N, P and K in combined operations with and without herbicide application, as well as to evaluate the fertilizer application on each side of the fertilizer machine. The experiment was carried out on Cascavel farm, in the municipality of MatãoSP. The experimental design was established according to the criteria of quality control, and variables monitoring carried out in the place during fertilization operation,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Statistical process control; Fertilizer; Operational quality; Fertilizer machine.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400676

Effect of humus and soil substrates on production parameters and quality of organic strawberries
Provedor de dados: 75
Autores: Hoehne,Lucélia; Altmayer,Taciélen; Martini,Maira C; Finatto,Jordana; Brietzke,Débora T; Kuhn,Daniel; Schweizer,Ytan A; Vettorello,Gabriela; Cordeiro,Sabrina G; Ethur,Eduardo M; Freitas,Elisete M de; Severo Filho,Wolmar A.
ABSTRACT This study aims to verify the most suitable substrate formulation based on proportions of earthworm humus and soil to improve the quality of organic strawberries. Vermicomposting generated humus and strawberry seedlings were planted in different humus:soil ratios: (0:100; 20:80; 40:60; 60:40; 80:20 and 100:0, respectively). The proportional conditions were characterized after planting and after 60-day cultivation, plants were harvested, and chemical characterizations of the soil and plants were made. We verified that with an increase of humus content in the substrate, an increase in values of N, P, K, pH and organic matter in soil and dry and fresh mass in shoot area of the plants were noticed. In relation to fruits, pH, humidity and sodium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fragaria x ananassa; Húmus; Fertilizer; Nutrients.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000100101

Effect of potassium sources on potato tuber yield and chip quality
Provedor de dados: 75
Autores: Silva,Giovani O; Bortoletto,Antonio C; Carvalho,Agnaldo DF; Pereira,Arione S.
ABSTRACT Many potato producers for fry industry changed from the use of potassium chloride to potassium sulfate, as there is a concept that the use of this source improves tuber quality. The aim of this work was to evaluate the effect of these two potassium sources on yield, specific gravity and chip color of potato chipping cultivars. The experiment was carried out on a Dystrophic Red Latosol, in Canoinhas, Brazil, in spring season 2016. Treatments consisted of two potato cultivars, BRSIPR Bel and Atlantic, and two sources of potassium, chloride and sulfate, applied in the furrow at the planting time, in rates based on soil analysis. Experimental design was a randomized complete block in a split-plot arrangement with four replications. Main plots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Mineral nutrition; Fertilizer; BRSIPR Bel; Atlantic.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300395

Carência de macronutrientes e de boro em plantas de juta (Corchorus capsularis L.), variedade roxa.
Provedor de dados: 14
Autores: VIEGAS, I. de J. M.; HAAG, H. P.; SILVA, J. F. da; MONTEIRO, F. A.
bitstream/item/32693/1/CPATU-BP138.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Macronutriente; Fertilizer; Deficiency; Macronutrient; Potasium; Sulphur.; Adubação; Boro; Cálcio; Deficiência; Enxofre; Fósforo; Juta; Magnésio; Nitrogênio; Potássio.; Boron; Calcium; Jute; Magnesium; Nitrogen; Phosphorus.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380546

Calagem e parcelamento da adubação fosfatada em porta-enxertos de seringueira.
Provedor de dados: 14
Autores: VIEGAS, I. de J. M.; CARDOSO, A.; VIEGAS, R. M. F.; ALBUQUERQUE, F. A. B. de.
bitstream/item/57409/1/Belem-BP6.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Porta-enxerto; Rubber tree; Fertilizer; Phosphate; Root stock.; Adubação; Calagem; Fosfato; Fósforo; Seringueira.; Liming; Phosphorus.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382008

Recomendacoes tecnicas para a cultura da soja na Regiao Central do Brasil.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR).
Solos e nutricao vegetal; Conservacao do solo; Correcao de solo e manutencao de fertilidade; Calagem; Qualidade do calcario e condicoes de uso; Correcao da acidez subsupercial; Adubacao em solos do Cerrado; Adubacao fosfatada; Adubacao potassica; Adubacao com micronutrientes; Adubacao foliar com macro e micronutrientes; Inoculacao; Plantas daninhas; Tecnologia de sementes; Estabelecimento de campo de semente; Colheita; Avaliacao; Manejo de pragas; Praticas culturais; Manejo do solo; Rotacao de culturas; Epoca de semeadura; Genetica e melhoramento; Fitopatologia.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Adubacao fosfatada; Adubacao potassica; Planta daninha; Manejo de praga; Fitopatologia; Brasil; Soybean; Fertilizer; Seed; Inoculation; Weed; Genetic; Phytopathology; Pests management; Technical directions.; Adubação Foliar; Inoculação; Glycine Max; Genética; Melhoramento; Nutrição Vegetal; Pesquisa; Pratica Cultural; Semente; Soja; Solo.; Brazil; Crop management; Breeding; Plant nutrition; Soil.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/447041

O cultivo do cafeeiro no Estado do Pará.
Provedor de dados: 14
Autores: OLIVEIRA, R. P. de.
bitstream/item/61966/1/Belem-Doc6.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cultivo; Preparo; Coffee; Cultivation; Preparation; Seedling; Seed; Fertilizer; Pest; Disease; Revenue.; Adubação; Coffea Arábica; Café; Comercialização; Doença; Muda; Praga; Semente.; Rendimento; Commercialization.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381132

CULTURA da cana de açúcar.
Provedor de dados: 14
bitstream/item/146498/1/CANA-ACUCAR.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cana-de-açúcar; Cultivo; Controle; Sugar cane; Cultivation; Plantation date; Fertilizer; Spacing; Cultural practices; Harvest; Yield; Pest; Disease; Control.; Adubação; Clima; Colheita; Espaçamento; Época de Plantio; Doença; Praga; Pratica Cultural; Produtividade; Solo.; Climate; Soil.
Ano: 1973
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375990

Adubação de estabelecimento do capim andropogon (Andropogon gayanus Kunth) em áreas de pastagens degradadas de Paragominas-PA.
Provedor de dados: 14
Autores: VEIGA, J. B. da; SERRÃO, E. A. S.; PEREIRA, C. A.
bitstream/item/57526/1/CPATU-ComTec57.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Planta forrageia; Pastagem degradada; Paragominas; Pará; Brasil; Fertilizer; Grass; Forage crop; Degradad pasture.; Adubação; Andropogon Gayanus; Capim Andropogon.; Amazonia.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382351

Manual prático do cultivo de fruteiras.
Provedor de dados: 14
Autores: MÜLLER, C. H.; KATO, A. K.; DUARTE, M. de L. R.
bitstream/item/60058/1/Miscelanea-9.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Controle de umidade; Saco plástico; Repicagem; Replantio; Coroamento; Roçagem; Brasil; Tropical fruit; Cultivation; Seedbag; Seeding; Seed; Humidity control; Plastic bag; Nursery; Cultting; Replantation; Fertilizer; Pest; Disease.; Adubação; Cova; Espaçamento; Fruta Tropical; Doença; Muda; Poda; Praga; Semente; Sementeira; Semeadura; Viveiro.; Amazonia; Pruning.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379780

Etrace express: programa para análise de risco de elementos-traço em fertilizantes inorgânicos (2009).
Provedor de dados: 14
Autores: SILVA, A. B. da; MARCHI, G.; SILVA, O. D. D. da; GUILHERME, L. R. G.
bitstream/item/78171/1/p2009-058.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Metais pesados; Fertilizer; Trace Element.; Segurança Alimentar.; Food security.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/747805

Indicações para o cultivo do amendoim.
Provedor de dados: 14
Autores: SANTOS, A. I. M. dos; CONDURÚ, J. M. P.
bitstream/item/70905/1/IPEAN-Comunicado30.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Zona leste; Pará; Brasil; Peanut; Cultivation; Spacing; Plantation date; Fertilizer; Yield; Harvest; Cultural practices.; Amendoim; Adubação; Colheita; Época de Plantio; Espaçamento; Produtividade.; Pratica Cultural; Amazonia.
Ano: 1972
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376311

Etrace Express: software for risk analysis of trace elements in inorganic fertilizers - user's manual and reference guide.
Provedor de dados: 14
Autores: MARCHI, G.; GUILHERME, L. R. G.; SILVA, A. B. DA; GONÇALVES, V. C.; PINHO, P. J. DE; PIERANGELI, M. A. P.; DANTAS, O. D.
bitstream/item/77800/1/doc-300.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Software; Elementos-traço; Contaminação do solo; Fertilizer; Trace element; Soil contamination.; Fertilizante; Segurança Alimentar.; Food security; Risk analysis.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/898281

Cafeeiro.
Provedor de dados: 14
Autores: OLIVEIRA, R. P. de.
bitstream/item/61710/1/Belem-RecBas6.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Rodovia Transamazônica; Altamira; Itaituba; Pará; Brasil; Coffee; Cultivation; Fertilizer; Seed; Selection; Cultting.; Adubação; Coffea Arábica; Café; Muda; Semente.; Seleção; Amazonia.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381229

Interpretacao de analise de terra e recomendacao de adubos fosfatados para culturas anuais nos cerrados.
Provedor de dados: 14
Autores: SOUSA, D. M. G. de; MIRANDA, L. N. de; LOBATO, E.
bitstream/item/99310/1/comtec-51.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultivo; Adubação fosfatada; Brasil; Fertilizer; Phosphate fertilization; Savanna.; Acidez do Solo; Adubação; Cerrado; Fertilidade do Solo; Fertilizante Fosfatado; Fosfato; Glycine Max; Nutriente; Produção; Soja; Solo.; Brazil.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/548060

Adubação de pastagem de capim colonião em degradação, em Santana do Araguaia - Pará.
Provedor de dados: 14
Autores: SOUZA FILHO, A. P. da S.; TEIXEIRA NETO, J. F.; VEIGA, J. B. da.
bitstream/item/32042/1/CPATU-BP120.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Pastagem degradada; Recuperacao de pastagem; Capim-coloniao; Santana do Araguaia; Pará; Brasil; Fertilizer; Degraded pasture; Pasture recuperation; Leguminous.; Adubação; Leguminosa; Panicum Maximum.; Amazonia.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383637

Isotermas de adsorcao de fosforo em dois tipos de solo cultivado com o algodoeiro herbaceo.
Provedor de dados: 14
Autores: NOBREGA, L. B. da; VASCONCELOS, L. N.; BELTRAO, N. E. de M.; SANTOS, J. W. dos; AZEVEDO, D. M. P. de; VIEIRA, D. J.
Objetivando estudo as isotermas de adsorcao de fosforo em dois tipos de solo, arenoso e franco-arenoso, respectivamente coletados nos municipios de Surubim,PE, e Monteiro,PB, Brasil, quatro ensaio foram conduzidos, sendo condicoes de laboratorio e dois em condicoes de casa de vegetacao.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Brasil; Paraiba; Pernambuco; Monteiro; Fertilizer; Fertilization.; Adubação; Algodão; Fertilizante; Gossypium Hirsutum; Surubim; Solo.; Cotton; Soil.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/269816

Etrace Express: manual de programa para análisis de riesgo de elementos traza en fertilizantes inorgánicos.
Provedor de dados: 14
Autores: MARCHI, G.; GUILHERME, L. R. G.; SILVA, A. B. DA; GONÇALVES, V. C.; PINHO, P. J. DE; PIERANGELI, M. A. P.; DANTAS, O. D.; HURTADO, S. M. C.
bitstream/item/77789/1/doc-291.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Software; Elemento-traço; Contaminação do solo; Fertilizer; Trace element; Soil contamination.; Fertilizante; Segurança Alimentar.; Food security; Risk analysis.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/898139

Emprego de fertilizantes e tratores na Amazônia.
Provedor de dados: 14
Autores: HOMMA, A. K. O.; COSTA, D. R.; AMARAL, J. V.; BRAZ, J. M. de L.
bitstream/item/197894/1/FL00723.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Uso; Brasil; Fertilizer; Comsumption; Use; Consumo; Fertilizante; Trator; Amazonia.
Ano: 1976
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/374699

Recuperação e utilização de pastagens de capim-jaraguá (Hyparrhenia rufa) na engorda de novilhos em Marabá, Pará.
Provedor de dados: 14
Autores: AZEVEDO, G. P. C. de; VEIGA, J. B. da; CAMARAO, A. P.; TEIXEIRA, R. N. G.
bitstream/item/32667/1/CPATU-BP134.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Pastagem degradada; Maraba; Pará; Brasil; Pasture degradated; Fertilizer; Phosphate; Leguminous; Bovine; Fattening.; Adubação; Alimentação; Bovino; Capim Jaraguá; Engorda; Fosfato; Hyparrhenia Rufa; Leguminosa; Nitrogênio.; Amazonia; Nitrogen.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380483

Capim-tobiatã: nova opção para capineiras.
Provedor de dados: 14
Autores: SIMÃO NETO, M.; VEIGA, J. B. da; CARVALHO, L. O. D. de M.
bitstream/item/34678/1/RecBas-20.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Capim tobiata; Forrageira; Forage grass; Fertilizer; Plant; Plantation.; Adubação; Gramínea; Panicum Maximum; Planta; Plantio; Produção.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380527

História e uso do silicato de sódio na agricultura.
Provedor de dados: 14
Autores: LIMA FILHO, O. F. de.
bitstream/item/125220/1/LIVRO-SILICATO-2009-online.pdf
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Agroecologia; Estresse; Growth; Nutrient; Plant; Fertilizer; Organic agriculture; Agro-ecology; Disease.; Adubação; Agricultura Orgânica; Crescimento; Doença; Fisiologia; Nutriente; Planta; Praga; Silício; Solo.; Physiology; Pests; Silicon; Soil.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/696871

Resultados de pesquisa com arroz de sequeiro na Transamazônica, Pará - 1972/81.
Provedor de dados: 14
Autores: CARVALHO, E. J. M.; CORREA, J. R. V.; POLTRONIERI, L. S.
bitstream/item/66789/1/Altamira-Doc4.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Arroz de sequeiro; Cultivar; Transamazônica; Pará; Brasil; Upland rice; Yield; Fertilizer; Variety.; Adubação; Pesquisa; Produtividade.; Amazonia; Research.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383048

Adubação química de cultivares de pimenta-do-reino (Piper nigrum L.) em latossolo amarelo da rodovia Transamazônica.
Provedor de dados: 14
Autores: VELOSO, C. A. C.; KATO, O. R.; ALBUQUERQUE, F. C. de; BRANDÃO, G. R.
bitstream/item/61692/1/Belem-ComTec1.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Pimenta-do-reino; Cultivar; Rodovia Transamazônica; Altamira; Marabá; Pará; Brasil; Black papper; Fertilizer; Variety; Yellow latosol; Production.; Adubação; Fósforo; Latossolo Amarelo; Nitrogênio; Piper Nigrum; Potássio; Produção.; Amazonia; Phosphorus; Nitrogen; Potassium.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381259

Fruteiras: abacaxizeiro, cajueiro, goiabeira, maracujazeiro, murucizeiro.
Provedor de dados: 14
Autores: CALZAVARA, B. B. G.
bitstream/item/166617/1/Culturas-da-amazonia-COMPLETO.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Muruci; Cultivar; Controle; Pará; Brasil; Fruit; Cultivation; Pineapple; Cashew-nut; Guava; Maracock; Yield; Variety; Plantation date; Spacing; Fertilizer; Disease; Control.; Adubação; Abacaxi; Caju; Doença; Época de Plantio; Espaçamento; Fruta; Goiaba; Maracujá; Peste; Produção; Produtividade; Praga; Solo.; Amazonia; Soil.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/856001

Recuperação, melhoramento e manejo de pastagens na região de Paragominas, Pará: resultados de pesquisa e algumas informações práticas.
Provedor de dados: 14
Autores: DIAS FILHO, M. B.; SERRÃO, E. A. S.
bitstream/item/42089/1/Documentos-5-CPATU.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Formação; Rufa; Recuperação; Avaliação; Quicuio da amazônia; Jaragua; Paragominas; Pará; Brasil; Pasture; Management; Grass; Formation; Recuperation; Valuation; Fertilizer; Leguminous; Spittlebugs; Forage crop.; Adubação; Brachiaria Humidicola; Capim Colonião; Cigarrinha; Gramínea; Leguminosa; Manejo; Melhoramento; Panicum Maximum; Pastagem; Planta Forrageira.; Hyparrhenia; Amazonia; Breeding.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382338

Pesquisa agropecuária em Paragominas, PA - 1984.
Provedor de dados: 14
Autores: VEIGA, J. B. da; SERRÃO, E. A. de S.; MARQUES, L. C. T.; CAMARÃO, A. P.; PEREIRA NETO, L. G.; SEIXAS, L. C. G. de S.; CALDERON, M.; COVRE, J. L.
bitstream/item/57544/1/CPATU-ComTec55.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Agropecuária; Avaliação; Consorciação; Quicuio-da-amazônia; Paragominas; Pará; Brasil; Forage crop; Valuation; Grass; Production; Pasture; Maize; Conservation; Fertilizer; Spittleburgs.; Adubação; Arroz; Conservação; Cigarrinha; Gramínea; Milho; Pastagem; Planta Forrageira; Produção; Zea Mays.; Andropogon; Amazonia; Agriculture; Intercropping; Rice.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382312

Relação volumétrica esterco/terriço na formação de mudas de urucuzeiro.
Provedor de dados: 14
Autores: KATO, O. R.; BELFORT, A. J. L.; CASTRO, N. H. C. de; KATO, M. do S. A.
bitstream/item/61694/1/Belem-ComTec2.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Urucu; Terriço; Annatto; Cultting; Production; Manure; Fertilizer; Cost.; Adubação; Bixa Orellana; Custo; Esterco; Húmus; Muda; Produção.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381140

Influência de adubação NPK no milho, em terra roxa estruturada (Altamira - zona do rio Xingu).
Provedor de dados: 14
Autores: CRUZ, E. de S.; SOUSA, G. F. de; BASTOS, J. B.
bitstream/item/162581/1/FL01758-.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Terra roxa estruturada; Zona do Xingu; Altamira; Pará; Brasil; Maize; Fertilizer; Yield; Structured brown soil.; Adubação; Milho; Produtividade.; Amazonia.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375796

Fruteiras: abieiro, abricozeiro, bacurizeiro, biribazeiro, cupuaçuzeiro.
Provedor de dados: 14
Autores: CALZAVARA, B. B. G.
bitstream/item/69738/1/IPEAN-CulturasAmazonia3.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Cultivar; Propagacao; Praga Colheita; Rollinia orthopetala; Brasil; Fruit; Cultivation; Variety; Propagation; Plantation date; Cultural practices; Fertilizer; Disease; Pest; Harvest.; Abricó; Abiu; Adubação; Biriba; Bacuri; Cupuaçu; Época de Plantio; Doença; Fruta; Mammea Americana; Platonia Insignis; Pratica Cultural; Theobroma Grandiflorum; Solo.; Amazonia; Pouteria caimito; Planting; Soil.
Ano: 1970
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376699

Recomendações para experimentos com fertilizantes.
Provedor de dados: 14
Autores: PONTE, N. T. da.
bitstream/item/227377/1/Recomendacoes-para-experimentos.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Experimento; Experimentation; Fertilizer; Adubação.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/378755

Pesquisa com pastagem na região de Altamira, PA: resultados preliminares.
Provedor de dados: 14
Autores: AZEVEDO, G. P. C. de; SOUZA, F. R. S. de.
bitstream/item/61344/1/Altamira-Doc1.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Consorciação; Altamira; Pará; Brasil; Pasture; Leguminous; Fertilizer; Dry matter; Production.; Adubação; Capim Colonião; Fósforo; Matéria Seca; Leguminosa; Pastagem; Pesquisa; Produção.; Amazonia; Intercropping; Phosphorus; Research.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/382539

A cana-de-açúcar na Transamazônica, PA: resultados de 8 anos de pesquisa, 1974/82.
Provedor de dados: 14
Autores: POLTRONIERI, L. S.; ROCHA, A. C. P. N. da; COSTA, M. S.
bitstream/item/57751/1/Altamira-Doc5.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cana-de-açúcar; Cultivar; Sacharum officinarum; Transamazônica; Pará; Brasil; Sugar cane; Fertilizer; Yield; Variety.; Adubação; Fósforo; Pesquisa; Produtividade.; Amazonia; Phosphorus; Research.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383049

Nutrientes limitantes ao estabelecimento e produção de Brachiaria humidicola consorciada com leguminosas em tesos da Ilha de Marajó.
Provedor de dados: 14
Autores: TEIXEIRA NETO, J. F.; SOUZA FILHO, A. P. da S.; DUTRA, S.; MARQUES, J. R. F.
Uma pastagem de Brachiaria humidicola consorciada com leguminosas foi estabelecida em uma área de "tesos" da fazenda Curral do Meio, localizada no município de Ponta de Pedras na ilha de Marajó (PA), objetivando avaliar o efeito da omissão de nutrientes sobre o estabelecimento e rendimento das plantas. O solo e um Plintossolo ácido e de baixa fertilidade natural. O clima, segundo Koppen, e Amitropical chuvoso, com precipitação pluviométrica anual media de 2.500 mm, temperatura media de 27C e umidade relativa em torno dos 85%. Utilizou-se o delineamento experimental inteiramente ao acaso com dez tratamentos e três repetições. Periodicamente, eram realizados cortes com vistas a determinação da produção de matéria seca. Os resultados obtidos indicam baixo...
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Consorciacao; Ilha de Marajo; Pará; Brasil; Production; Fertilizer; Dry matter.; Adubação; Brachiaria Humidicola; Capim Quicuio; Forragem; Matéria Seca; Leguminosa; Legume; Produção.; Amazonia; Forage; Intercropping.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379774

Mandioca.
Provedor de dados: 14
Autores: ALBUQUERQUE, M. de.
Pesquisas do IPEAN. A cultura em grandes zonas agrícolas do estuário amazônico.
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Cultivar; Consorciação; Rotação; Classificação; Utilização; Brasil; Pará; Cultivation; Disease; Pest; Variety; Fertilizer; Rotation; Spacing; Plantation date; Yield; Production; Utilization.; Adubação; Botânica; Época de Plantio; Espaçamento; Doença; Mandioca; Pesquisa; Praga; Produtividade; Plantio; Produção; Tecnologia.; Amazonia; Classification; Cassava; Botany; Intercropping; Planting; Research; Technology.
Ano: 1970
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/387078

Diagnóstico tecnológico dos pequenos produtores de dendê no Estado do Pará.
Provedor de dados: 14
Autores: MULLER, A. A.; COUTINHO FILHO, D.; SOUZA, L. A. de; SILVA, H. M. e; VIEGAS, I. de J. M.; CELESTINO FILHO, P.; CARVALHO, R. de A.
bitstream/item/57887/1/Belem-CirTec6.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Pequeno agricultor; Plantação; Pará; Brasil; Oil palm; Diagnosis; Production; Plantation; Fertilizer; Yield.; Adubação; Dendê; Elaeis Guineensis; Diagnostico; Produtividade; Produção.; Amazonia; Small farms.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383723

Capim braquiaria.
Provedor de dados: 14
Autores: SERRÃO, E. A. S.; GONDIM, A. G.
bitstream/item/69612/1/IPEAN-CulturasAmazonia2.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Capim braquiaria; Planta graminea forrageira; Propagação; Cultivo; Forage grass; Fertilizer; Propagation; Cultivation; Production.; Adubação; Brachiaria Decumbens; Clima; Plantio; Produção; Solo.; Climate; Planting; Soil.
Ano: 1966
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376541

Adubação nitrogenada e inoculação de soja em solos de cerrados.
Provedor de dados: 14
Autores: VARGAS, M. A. T.; PERES, J. R. R.; SUHET, A. R.
A soja é considerada a maior fonte de proteínas para a alimentação animal e humana e seus subprodutos oferecem grande diversidade de emprego na indústria química. A expansão dessa cultura no Brasil acentou-se a partir de 1973, quando ocorreu uma grande elevação de seu preço no mercado internacional. A sua participação na pauta de exploração tem sido muito expressiva. Em 1979 contribuiu com cerca de 2 bilhões de dólares em divisas. Ocupa atualmente cerca de 20% de área cultivada no País. Nos cerrados, a partir de uma produção pouco expressiva, em 1975, foram colhidos na safra 1979/80 cerca de 1,9 milhão de toneladas de grãos de soja, equivalendo a 12,6% da produção do País. Essa produção representou um aumento de 66% em relação a safra anterior. Como o...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Adubação nitrogenada; Brasil; Cultivo; Fertilização; Fertilizer; Inoculation; Savanna; Soybean.; Adubação; Cerrado; Fertilizante Nitrogenado; Glycine Max; Grão; Inoculação; Nitrogênio; Produção; Rhizobium Japonicum; Solo.; Soja; Pennisetum; Inoculation methods; Nitrogen fertilizers; Nitrogen; Soil.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547538

Introdução e avaliação de leguminosas forrageiras na região de Paragominas, Pará.
Provedor de dados: 14
Autores: DIAS FILHO, M. B.; SERRÃO, E. A. S.
bitstream/item/33788/1/CPATU-CirTec29.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Avaliação; Paragominas; Pará; Brasil; Leguminous; Forage crop; Production; Fertilizer; Dry matter.; Adubação; Cálcio; Fósforo; Matéria Seca; Leguminosa; Planta Forrageira; Produção.; Amazonia; Calcium; Phosphorus.
Ano: 1982
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381810

Citros: formação de mudas.
Provedor de dados: 14
Autores: RIBEIRO, S. I.
bitstream/item/61714/1/Belem-RecBas10.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Citro; Cultivo; Enxertia; Formação; Cultting; Cultivation; Seed; Fertilizer; Grafting; Seedbag; Treatment; Conservation; Nursery; Formation.; Adubação; Conservação; Muda; Semente; Sementeira; Tratamento; Viveiro.; Citrus.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381134

Análise econômica da adoção da mecanização e adubação na cultura de arroz e caupi em Altamira - Pará.
Provedor de dados: 14
Autores: CARVALHO, R. de A.; KATO, O. R.; HOMMA, A. K. O.
bitstream/item/57395/1/Altamira-CirTec4.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Caupi; Altamira; Pará; Braisl; Cowpea; Fertilizer; Economy; Agricultural mechanization; Production system.; Adubação; Arroz; Economia; Mecanização Agrícola; Sistema de Produção.; Amazonia; Rice.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/379292

Resposta do arroz apura, à adubação NPK, sob regime de irrigação natural (várzea do Rio Caeté - município de Bragança-PA).
Provedor de dados: 14
Autores: LOPES, A. de M.; CRUZ, E. de S.; KASS, D. L.
bitstream/item/114592/1/COMUNICADO-TECNICO-14.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Arroz apura; Cultivar; Adubação NPK; Bragança; Pará; Brasil; Variety; Fertilizer; Yeld; Flood plain.; Irrigação; Produtividade; Várzea.; Amazonia; Irrigation; Rice.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376691

Estudo do comportamento da cultura do amendoim na presença de diversos tipos de calcário e do adubo concentrado ultra fertil.
Provedor de dados: 14
Autores: SANTOS, A. I. M. dos; CONDURU, J. M. P.; KASS, D. L.
bitstream/item/152502/1/Comunicado19.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Fertilizer; Peanut; Calcareous; Yield.; Amendoim; Adubação; Calcário; Fósforo; Produtividade.; Potássio; Phosphorus; Potassium.
Ano: 1972
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376313

Uso agrícola de resíduos orgânicos.
Provedor de dados: 14
Autores: NUNES, W. A. G. de A.
bitstream/item/51018/1/e-usinas-Artigos-Imprimir.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Fertilizer; Residue; Treatment.; Fertilizante; Matéria Orgânica; Resíduo Orgânico; Tratamento.; Organic matter.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/873981

Cultura do guaranazeiro.
Provedor de dados: 14
Autores: CASTRO, N. H. C. de.
Importância econômica. Uso, valor terapêutico e composição química. Classificação botânica e distribuição. Clima solo. Produção de mudas. Preparo de área de plantio. Sombreamento. Consorcio. Tratos culturais. Adubação e nutrição. Controle fitossanitário. Floração e frutificação. Colheita e beneficiamento. Rendimento. Coeficientes técnicos. Classificação e comercialização.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cultivo; Classificação; Cultivation; Seedling; Production; Plantation; Fertilizer; Disease; Pest; Harvest.; Adubação; Clima; Colheita; Doença; Guaraná; Muda; Paullinia Cupana; Plantio; Praga; Produção; Solo.; Climate; Classification; Soil.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/387092

Citros: implantação e condução de pomar.
Provedor de dados: 14
Autores: RIBEIRO, S. I.
bitstream/item/61721/1/Belem-RecBas15.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Citro; Cultivo; Controle; Coeficiente técnico; Pará; Brasil; Cultivation; Pest; Disease; Control; Fertilizer; Spancing; Technic coefficient.; Adubação; Espaçamento; Doença; Praga.; Citrus; Amazonia.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381232

A cultura do guaraná.
Provedor de dados: 14
Autores: GONÇALVES, J. R. C.
bitstream/item/69611/1/IPEAN-CulturasAmazonia1.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Cultivar; Brasil; Cultivation; Variety; Geography distribution; Fertilizer; Harvest; Processing; Disease; Pest.; Adubação; Beneficiamento; Colheita; Distribuição Geográfica; Doença; Guaraná; Paullinia Cupana; Plantio; Praga; Solo.; Amazonia; Planting; Soil.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376715

Fruteiras: abacaxizeiro, cajueiro, goiabeira, maracujazeiro, murucizeiro.
Provedor de dados: 14
Autores: CALZAVARA, B. B. G.
bitstream/item/166425/1/CulturasDaAmazonia.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Muruci; Cultivar; Controle; Pará; Brasil; Fruit; Cultivation; Pineapple; Cashew-nut; Guava; Maracock; Yield; Variety; Plantation date; Spacing; Fertilizer; Disease; Control.; Abacaxi; Adubação; Caju; Época de Plantio; Espaçamento; Fruta; Doença; Goiaba; Maracujá; Peste; Produtividade; Praga; Produção; Solo.; Amazonia; Soil.
Ano: 1970
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/375743

Efeito do fósforo no desenvolvimento de clones de seringueira e sua ação na disponibilidade de zinco.
Provedor de dados: 14
Autores: VIEGAS, I. de J. M.; ALVES, R. M.
bitstream/item/32018/1/CPATU-BP116.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Desenvolvimento; Ilha do Mosqueiro; Pará; Brasil; Rubber tree; Yellow latosol; Fertilizer; Development.; Adubação; Clone; Fósforo; Hevea Brasiliensis; Latossolo Amarelo; Seringueira; Zinco.; Amazonia; Phosphorus; Zinc.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381205

Seringueira.
Provedor de dados: 14
Autores: ALVES, R. M.; VIEGAS, I. de J. M.; CUNHA, R. L. M. da.
bitstream/item/34676/1/RecBas-18.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Cultivo; Consorciacao; Pará; Brasil; Rubber tree; Cultivation; Seed; Fertilizer; Pest; Disease.; Adubação; Fertilizante; Doença; Hevea Brasiliensis; Praga; Semente; Seringueira.; Amazonia; Intercropping.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381224

Resposta de três gramíneas forrageiras (Brachiaria decumbens Stapf, Brachiaria ruziziensis Germain et Everard e Pennisetum purpureum Schum.) a elementos fertilizantes em latosol amarelo textura media.
Provedor de dados: 14
Autores: SERRÃO, E. A. S.; CRUZ, E. de S.; SIMÃO NETO, M.; SOUSA, G. F. de; BASTOS, J. B.; GUIMARÃES, M. C. de F.
bitstream/item/147434/1/IPEAN-V1-N2-ANO-1971.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Planta gramínea forrageira; Latossolo amarelo textura media; Capim braquiaria; Elephant grass; Yellow latosol; Fertilizer; Forage grass.; Adubação; Brachiaria Decumbens; Brachiaria Ruziziensis; Capim Elefante; Pennisetum Purpureum; Solo.; Soil.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383548

Fertilidade do solo sob cobertura de floresta primária e de cultivos de dendê e de seringueira.
Provedor de dados: 14
Autores: OLIVEIRA, R. F. de; TEIXEIRA, L. B.; BASTOS, J. B.
bitstream/item/59311/1/CPATU-ComTec72.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Oil palm; Rubber tree; Fertility; Fertilizer; Dry matter; Production.; Adubação; Dendê; Elaeis Guineensis; Fertilidade; Hevea Brasiliensis; Matéria Seca; Produção; Seringueira; Solo.; Soil.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/380524

Dinamica da materia organica na regiao dos cerrados.
Provedor de dados: 14
Autores: RESCK, D. V. S.; PEREIRA, J.; SILVA, J. E. da.
bitstream/item/101470/1/doc-36.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Rotational cropping; Cultura; Fertilizer; Matéria; Orgânica; Rotação; Sistema.; Cerrado; Fertilidade; Matéria Orgânica; Rotação de Cultura; Solo.; Organic matter; Soil.; Savannas.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/548002

Etrace Express: programa para análise de risco de elementos-traço em fertilizantes inorgânicos - manual e guia de referência.
Provedor de dados: 14
Autores: MARCHI, G.; GUILHERME, L. R. G.; SILVA, A. B.; GONÇALVES, V. C.; PINHO, P. J. DE; PIERANGELI, M. A. P.; SILVA, O. D. D. da.
bitstream/item/77787/1/doc-290.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Elemento-traço; Software; Fertilizer; Trace element.; Fertilizante; Segurança Alimentar.; Food security.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/897194

Informações sobre duas espécies de gramíneas forrageiras do gênero Brachiaria na Amazônia: B. decumbens Stapf e B. ruziziensis Germain et Everard.
Provedor de dados: 14
Autores: SERRÃO, E. A. S.; SIMÃO NETO, M.
bitstream/item/146643/1/IPEAN-v2-N1-1971.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Planta gramínea forrageira; Capim braquiária; Propagação; Ruziziensis; Brasil; Forage grass; Propagation; Pest; Disease; Fertilizer; Production.; Adubação; Botânica; Brachiaria Decumbens; Clima; Consorciação de Cultura; Doença; Forragem; Plantio; Praga; Produção; Valor Nutritivo; Solo.; Amazonia; Climate; Botany; Intercropping; Planting; Nutritive value; Soil.
Ano: 1971
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/376339

RECOMENDAÇÕES técnicas para o cultivo da soja: áreas do cerrado de Mato Grosso, Distrito Federal, Tocantins e norte do Mato Grosso do Sul zonas 10, 16, 19, 59, 60, 61, 64 e 91.
Provedor de dados: 14
bitstream/item/68984/1/Recomendacoes-tecnicas-cultivo-da-soja-zonas-10.pdf
Tipo: Recomendação Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Brasil; Armazenagem; Planta daninha; Controle; Cartilha; Soybean; Seed; Cultivation; Fertilizer; Weed.; Adubação; Calagem; Semente; Soja.; Brazil; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/97105

Potential Tetany Hazard of N-Fertilized Bromegrass as Indicated by Chemical Composition
Provedor de dados: 18
Autores: Follett, R.F.; Power, J.F.; Grunes, D.L.; Hewes, D.A.; Mayland, H.F.
Tipo: Article
Palavras-chave: Chemistry; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1975
URL: http://eprints.nwisrl.ars.usda.gov/294/1/337.pdf

Idaho Fertilizer Guide - Spring and Winter Wheat on Eastern Idaho Dryland
Provedor de dados: 18
Autores: Massee, Truman W.; Painter, Charles G.
Tipo: Technical Bulletin
Palavras-chave: Small grain; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1978
URL: http://eprints.nwisrl.ars.usda.gov/1161/1/428.pdf

Effect of Fall and Spring Applied Nitrogen Fertilizer on Growth and Yield of Sugarbeets
Provedor de dados: 18
Autores: Carter, J.N.
Tipo: Article
Palavras-chave: Sugarbeet; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1984
URL: http://eprints.nwisrl.ars.usda.gov/444/1/561.pdf

Effect of Soil Contamination on the Mineral Composition of Forage Fertilized with Nitrogen
Provedor de dados: 18
Autores: Mayland, H.F.; Sneva, F.E.
Tipo: Article
Palavras-chave: Chemistry; Fertilizer; Nitrogen; Mass Import - autoclassified (may be erroneous).
Ano: 1983
URL: http://eprints.nwisrl.ars.usda.gov/403/1/508.pdf

Net Nitrogen Mineralization from Past Years' Manure and Fertilizer Applications.
Provedor de dados: 18
Autores: Lentz, R.D.; Lehrsch, G.A.
Manure from the semiarid West’s dairy industries is a rich nutrient source, but its use for crops can be problematic because soil N availability from manure may vary substantially depending on the year of application.  Experimental plots established in Idaho on a Portneuf silt loam (coarse silty, mixed, superactive, mesic Durinodic Xeric Haplocalcid) included six manure treatments and two non-manure treatments with four replicates.  The six manure treatments included combinations of two manure rates, Man-1x (0.31 Mg total N/ha) and Man-3x (0.97 Mg total N/ha) applied in the fall either 1, 2, or 3 years previously.  The two non-manure treatments were urea fertilizer applied per soil test (Fert) and a control with no amendment. We measured net N...
Tipo: Article
Palavras-chave: Manure; Fertilizer; Soil.
Ano: 2012
URL: http://eprints.nwisrl.ars.usda.gov/1455/1/1420.pdf

Biochar elemental composition and factors influencing nutrient retention
Provedor de dados: 18
Autores: Ippolito, J.A.; Spokas, K.A.; Novak, J.M.; Lentz, R.D.; Cantrell, K.B.
Biochar is the carbonaceous solid byproduct of the thermochemical conversion of a carbon-bearing organic material, commonly high in cellulose, hemicelluloses, or lignin content, for the purposes of carbon sequestration and storage.  More specifically, the thermal conversion process known as pyrolysis occurs when carbon-containing substances are introduced to elevated temperatures in the absence of oxygen at varying residence times, yielding biochar.  Several pyrolysis techniques employed to produce biochar differ in the temperature of reaction and residence time in the reactor.  Different reactor residence times are described as slow (hours to days), fast (seconds to minutes), and flash (seconds).  Fast or flash pyrolysis typically occurs around 500oC with...
Tipo: Book Section
Palavras-chave: Fertility; Soil quality; Fertilizer.
Ano: 2015
URL: http://eprints.nwisrl.ars.usda.gov/1590/1/1547.pdf

Delinearing site-specific management zones for pH-induced iron chlorosis
Provedor de dados: 18
Autores: Kyaw, T.; Ferguson, R.B.; Adamchuk, V.I.; Marx, D.B.; Tarkalson, D.D.; McCallister, D.L.
Iron chlorosis can limit crop yield, especially on calcareous soil. Typical management for iron chlorosis includes the use of iron fertilizers or chlorosis tolerant cultivars. Calcareous and non-calcareous soil can be interspersed within fields. If chlorosis-prone areas within fields can be predicted accurately, site-specific use of iron fertilizers and chlorosis-tolerant cultivars might be more profitable than uniform management. In this study, the use of vegetation indices (VI) derived from aerial imagery, on-the-go measurement of soil pH and apparent soil electrical conductivity (ECa) were evaluated for their potential to delineate chlorosis management zones. The study was conducted at six sites in 2004 and 2005. There was a significant statistical...
Tipo: Article
Palavras-chave: Calcareous soil; Fertilizer.
Ano: 2008
URL: http://eprints.nwisrl.ars.usda.gov/1275/1/1251.pdf

Alternative N fertilizer management strategies effects on subsurface drain effluent and N uptake
Provedor de dados: 18
Autores: Bjorneberg, D.L.; Karlen, D.L.; Kanwar, R.S.; Cambardella, C.A.
Tipo: Article
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1998
URL: http://eprints.nwisrl.ars.usda.gov/692/1/960.pdf

Selenium Concentrations in Phosphorus Fertilizer Materials and Associated Uptake by Plants
Provedor de dados: 18
Autores: Robbins, C.W.; Carter, D.L.
Tipo: Article
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1970
URL: http://eprints.nwisrl.ars.usda.gov/194/1/178.pdf

Recovery of Fertilizer Nitrogen Under Field Conditions Using Nitrogen-15
Provedor de dados: 18
Autores: Carter, J.N.; Bennett, O.L.; Pearson, R.W.
Tipo: Article
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1967
URL: http://eprints.nwisrl.ars.usda.gov/517/1/67.pdf

Regression modeling weather and biolsolids effects on dryland wheat yields in Eastern Colorado, 2001-2012
Provedor de dados: 18
Autores: Barbarack, K.A.; Ippolito, J.A.; McDaniel, J.P.; Hansen., N.C.; Peterson, G.A.
In the western Great Plains, climate dictates dryland wheat (Triticum aestivum, L) productivity. Producers use inorganic N fertilizers to improve crop yields in this region, while municipalities recycle sewage biosolids in the area. Will biosolids (from the Littleton/Englewood, CO Wastewater Treatment Plant) applications to western Great Plains dryland agroecosystems interact with weather to affect wheat production? To this end, we regressed crop yields on weather variables from 2000 through 2011 at a site about 40 km (approximately 25 miles) east of Byers, CO (Byers). We used SAS (Proc Reg) to develop several multiple regression models to predict crop yields. Our model of choice included four weather parameters for Byers wheat production. Regression...
Tipo: Technical Bulletin
Palavras-chave: Dryland crops; Fertilizer; Nitrogen.
Ano: 2013
URL: http://eprints.nwisrl.ars.usda.gov/1515/1/1479.pdf

Nitrate accumulation and movement under deficit irrigation in soil receiving cattle manure and commercial fertilizer
Provedor de dados: 18
Autores: Tarkalson, D.D.; Payero, J.O.; Ensley, S.M.; Shapiro, C.A.
Nitrate leaching from agricultural soils can increase groundwater nitrate concentrations.  The objectives of the study were to assess the accumulation and movement of nitrate in the  soil profile over a 2-year period under deficit irrigation conditions following a one time  application of N in cattle feedlot manure and commercial fertilizer to corn at rates to achieve  yield goals expected under conditions of full irrigation. Cattle manure and ammonium  nitrate were applied in 2002 at the University of Nebraska recommended rate (1M and 1F ;  respectively) and cattle manure was applied at twice the recommended rate (2M) for N for  the 2002 corn (Zea mays L.) crop. The recommended rate was based on expected yields under  full irrigation. The manure N...
Tipo: Article
Palavras-chave: Chemistry; Fertilizer; Nitrogen; Mass Import - autoclassified (may be erroneous).
Ano: 2006
URL: http://eprints.nwisrl.ars.usda.gov/59/1/1220.pdf

Effect of Fertilizer and Irrigation on Nitrate-Nitrogen and Total Nitrogen in Potato Tubers
Provedor de dados: 18
Autores: Carter, J.N.; Bosma, S.M.
Tipo: Article
Palavras-chave: Potato; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1974
URL: http://eprints.nwisrl.ars.usda.gov/254/1/279.pdf

Total Salt, Specific Ion, and Fertilizer Element Concentrations and Balances in the Irrigation and Drainage Waters of the Twin Falls Tract in Southern Idaho
Provedor de dados: 18
Autores: Carter, D.L.; Robbins, C.W.; Bondurant, J.A.
Tipo: Technical Bulletin
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1973
URL: http://eprints.nwisrl.ars.usda.gov/1101/1/253.pdf

Improving exposed subsoils with fertilizers and crop rotations
Provedor de dados: 18
Autores: Robbins, C.W.; Mackey, B.E.; Freeborn, L.L.
Tipo: Article
Palavras-chave: Fertilizer; Chemistry; Mass Import - autoclassified (may be erroneous).
Ano: 1997
URL: http://eprints.nwisrl.ars.usda.gov/681/1/944.pdf

Magnesium Concentration in Agropyron desertorum Fertilized with Mg and N
Provedor de dados: 18
Autores: Mayland, H.F.; Grunes, D.L.
Tipo: Article
Palavras-chave: Chemistry; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1974
URL: http://eprints.nwisrl.ars.usda.gov/245/1/265.pdf

Nutrient losses from manure and fertilizer applications as impacted by time to first runoff event
Provedor de dados: 18
Autores: Smith, D.R.; Owens, P.R.; Leytem, A.B.; Warnemuende, E.A.
Nutrient losses to surface waters following fertilization contribute to eutrophication. This study was conducted to compare the impacts of  fertilization with inorganic fertilizer, swine (Sus scrofa domesticus) manure or poultry (Gallus domesticus) litter on runoff water quality, and  how the duration between application and the first runoff event affects resulting water quality. Fertilizers were applied at 35 kg P ha-1-, and  the duration between application and the first runoff event varied between 1 and 29 days. Swine manure was the greatest risk to water quality  1 day after fertilization due to elevated phosphorus (8.4 mg P L -1) and ammonium (10.3 mg NH4-N L-1) concentrations; however, this risk  decreased rapidly. Phosphorus concentrations were 2.6...
Tipo: Article
Palavras-chave: Nutrients; Chemistry; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 2007
URL: http://eprints.nwisrl.ars.usda.gov/61/1/1223.pdf

Fertilizer application for correcting micronutrient deficiencies
Provedor de dados: 18
Autores: Martens, D.C.; Westermann, D.T.
Tipo: Book Section
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1991
URL: http://eprints.nwisrl.ars.usda.gov/777/1/753.pdf

Chemical and Physical Properties of Zinc Fertilizer That Affect Their Availability When Applied to Neutral or Calcareous Soils
Provedor de dados: 18
Autores: Leggett, G.E.
Tipo: Conference or Workshop Item
Palavras-chave: Fertilizer; Calcareous soil; Mass Import - autoclassified (may be erroneous).
Ano: 1972
URL: http://eprints.nwisrl.ars.usda.gov/991/1/262.pdf

Changes in Nitrate-Nitrogen Concentration in Sugar Beet Petioles as Influenced by Irrigation and Fertilizer Practices
Provedor de dados: 18
Autores: Carter, J.N.; Jensen, M.E.
Tipo: Conference or Workshop Item
Palavras-chave: Sugarbeet; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1967
URL: http://eprints.nwisrl.ars.usda.gov/1070/1/86.pdf

Wheat Straw Management and Nitrogen Fertilizer Requirements
Provedor de dados: 18
Autores: Smith, J.H.; LeBaron, M.J.; Douglas, C.L.
Tipo: Technical Bulletin
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1974
URL: http://eprints.nwisrl.ars.usda.gov/1156/1/301.pdf

Evapotranspiration and Soil Moisture-Fertilizer Interrelations with Irrigated Winter Wheat in the Southern High Plains
Provedor de dados: 18
Autores: Jensen, M.E.; Sletten, W.H.
Irrigated and dry/and winter wheat is one of  the major crops produced in the High Plains of  Texas. As reported by the U.S. Census of Agriculture  the acreages of irrigated wheat harvested  in the High Plains in 1950, 1954, and 1959 were  133,000, 179,000 and 380,000 acres, respectively.  Additional irrigated wheat is used only for grazing  purposes. The major part of the irrigated  winter wheat harvested in the mid-1950's was in  Castro, Deaf Smith, Floyd, Hale, Parmer, and  Swisher Counties. The soils in these counties consist  mostly of clay looms and silty clay loams. Continued expansion in irrigated wheat  acreage has occurred since 1959, especially north  of the Canadian River.
Tipo: Technical Bulletin
Palavras-chave: Small grain; Soil water (soil moisture); Fertilizer; Chemistry; Evapotranspiration; Mass Import - autoclassified (may be erroneous).
Ano: 1965
URL: http://eprints.nwisrl.ars.usda.gov/1141/1/21.pdf

Compost and manure effects on fertilized corn silage yield and nitrogen uptake under irrigation
Provedor de dados: 18
Autores: Lehrsch, G.A.; Kincaid, D.C.
Dairy manure increases the yields of dry bean (Phaseolus vulgaris L.) and  spring wheat (Triticum aestivum L.) from eroded, furrow-irrigated soils and may  increase corn (Zea mays L.) silage yield from steeper eroded areas under sprinkler irrigation.  In a 2-year field study in southern Idaho on Portneuf silt loam (coarse silty,  mixed, superactive, mesic Durinodic Xeric Haplocalcid), the effects of a one-time,  fall application of 29 or 72 Mg ha-1 of dry manure or 22 or 47 Mg ha21 of dry  compost on subsequent silage yield and nitrogen (N) uptake from previously eroded,  sprinkler-irrigated hill slopes were evaluated. In October 1999, stockpiled or  composted dairy manure was disked to a depth of 0.15 m into plots with slopes from  0.8 to 4.4%. After...
Tipo: Article
Palavras-chave: Corn / maize; Corn; Composted manure; Chemistry; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 2007
URL: http://eprints.nwisrl.ars.usda.gov/66/1/1230.pdf

Evaluation of Nitrogen and Phosphorus Fertilizer Placement With Strip Tillage for Irrigated Pacific Northwest Corn Production
Provedor de dados: 18
Autores: Tarkalson, D.D.; Bjorneberg, D.L.
Nutrient placement options with strip tillage (ST) can potentially improve plant nutrient utilization and increase crop yield compared to conventional fertilizer placement practices under conventional tillage (CT). The effects of tillage practice and nitrogen (N) and phosphorus (P) placement on grain yield, biomass yield (whole plant, sum of grain, cobs, and stover), and N and P uptake of field corn (Zea mays L.) were assessed on four sites during 2007 and 2009 at the USDA-ARS Northwest Irrigation &amp; Soils Research Laboratory at Kimberly, ID. During each year, two locations (eroded and not eroded from furrow irrigation) were utilized as study locations. Band placement of fertilizer with ST increased corn grain yield by 12.5 percent (689 kg per ha) and...
Tipo: Article
Palavras-chave: Fertilizer; Soil; Nitrogen; Phosphorous.
Ano: 2010
URL: http://eprints.nwisrl.ars.usda.gov/1383/1/1358.pdf

Fertilizer source and crop rotation effects on beans grown on recently exposed subsoils
Provedor de dados: 18
Autores: Robbins, Charles W.; Freeborn, Larry L.
Tipo: Conference or Workshop Item
Palavras-chave: Bean / dry bean; Fertilizer; Chemistry; Mass Import - autoclassified (may be erroneous).
Ano: 1997
URL: http://eprints.nwisrl.ars.usda.gov/1082/1/932.pdf

Nitrogen fertilizer efficiencies on potatoes
Provedor de dados: 18
Autores: Westermann, Dale T.; Kleinkopf, G.E.; Porter, Lynn K.
Tipo: Article
Palavras-chave: Potato; Fertilizer; Practical farm efficiency; Mass Import - autoclassified (may be erroneous).
Ano: 1988
URL: http://eprints.nwisrl.ars.usda.gov/501/1/655.pdf

Phosphorus availability to barley from manures and fertilizers on a calcareous soil
Provedor de dados: 18
Autores: Leytem, A.B.; Westermann, D.T.
Tipo: Article
Palavras-chave: Small grain; Small grains; Chemistry; Fertilizer; Calcareous soil; Phosphorous; Mass Import - autoclassified (may be erroneous).
Ano: 2005
URL: http://eprints.nwisrl.ars.usda.gov/26/1/1174.pdf

Matrix-based fertilizers: A new fertilizer formulation concept to reduce nutrient leaching
Provedor de dados: 18
Autores: Sojka, R.E.; Entry, J.A.
We compared the efficacy of matrix based fertilizers (MBFs) formulated to reduce NO 3 -,  NH4+ , and total phosphorus (TP) leaching, with Osmocoate® 14-14-14, a conventional  commercial slow release fertilizer (SRF), and with an unamended control in greenhouse  column studies. The MBF formulations covered a range of inorganic N and P in compounds  that are relatively loosely bound (MBF1) to more moderately bound (MBF2) and more tightly  bound compounds (MBF3) mixed with Al(SO 4)3 H2O and/or Fe2(SO4 )3 and with high ionic  exchange compounds starch, chitosan and lignin. When N and P are released, the chemicals  containing these nutrients in the MBF temporarily bind N and P to a Al(SO4 )3 H2O and/or  Fe2(SO4 )3 starch- chitosan- lignin matrix. One milligram...
Tipo: Conference or Workshop Item
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 2007
URL: http://eprints.nwisrl.ars.usda.gov/856/1/1224.pdf

Manure and fertilizer effects on carbon balance and organic and inorganic carbon losses for an irrigated corn field
Provedor de dados: 18
Autores: Lentz, R.D.; Lehrsch, G.A.
Little is known about inorganic fertilizer or manure effects on organic carbon (OC) and inorganic C (IC) losses from a furrow irrigated field, particularly in the context of other system C gains or losses. In 2003 and 2004, we measured dissolved organic and inorganic C (DOC, DIC), particulate OC and IC (POC, PIC) concentrations in irrigation inflow, runoff, and percolation waters (6-7 irrigations/y); C inputs from soil amendments and crop biomass; harvested C; and gaseous C emissions from field plots cropped to silage corn (Zea mays L.) in southern Idaho. Annual treatments included: (M) 13 (y 1) and 34 Mg/ha (y 2) stockpiled dairy manure; (F) 78 (yr 1) and 195 kg N/ha (y 2) inorganic N fertilizer; or (NA) no amendment--control. The mean annual total C...
Tipo: Article
Palavras-chave: Dissolved Orgainc Carbon (DOC); Manure; Fertilizer.
Ano: 2014
URL: http://eprints.nwisrl.ars.usda.gov/1544/1/1501.pdf

Nutrients in Wastewater from a Phosphate Fertilizer Manufacturing Plant Stored for Irrigation
Provedor de dados: 18
Autores: Smith, J.H.; Bondurant, J.A.; Wolleson, W.A.; Cochrane, J.F.
Tipo: Article
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1986
URL: http://eprints.nwisrl.ars.usda.gov/464/1/583.pdf

Zinc Fertilizers for Beans in Southern Idaho
Provedor de dados: 18
Autores: Brown, John W.; LeBaron, Marshall.
Tipo: Technical Bulletin
Palavras-chave: Bean / dry bean; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1968
URL: http://eprints.nwisrl.ars.usda.gov/1148/1/103.pdf

Matrix based fertilizers reduce nitrogen and phosphorus leaching in greenhouse column studies
Provedor de dados: 18
Autores: Entry, J.A.; Sojka, R.E.
Tipo: Article
Palavras-chave: Fertilizer; Research methodology; Mass Import - autoclassified (may be erroneous).
Ano: 2007
URL: http://eprints.nwisrl.ars.usda.gov/47/1/1202.pdf

Determining Nitrogen Fertilizer Needs for Sugarbeets from Residual Soil Nitrate and Mineralizable Nitrogen
Provedor de dados: 18
Autores: Carter, J.N.; Jensen, M.E.; Bosma, S.M.
Tipo: Article
Palavras-chave: Sugarbeet; Fertilizer; Nitrogen; Mass Import - autoclassified (may be erroneous).
Ano: 1974
URL: http://eprints.nwisrl.ars.usda.gov/256/1/282.pdf

High yield corn production can result in high nitrogen use efficiency
Provedor de dados: 18
Autores: Wortmann, C.C.; Shapiro, C.A.; Dobermann, Achim; Ferguson, Richard; Hergert, G; Walters, Daniel; Tarkalson, D.D.
Alarm is expressed about the environmental impact of the increasing amount of reactive N in the atmosphere and in terrestrial and marine ecosystems around the globe. Much of this increase is attributed to production and use of N fertilizer. Use of fertilizer N is essential to meet growing global demand for agricultural commodities. Management is key to increasing productivity while also increasing N use efficiency and reducing N losses. A team of University of Nebraska-Lincoln scientists, with partial funding from the Nebraska State Legislature, addressed this challenge. They conducted 32 irrigated trials across diverse production conditions of Nebraska from 2002 to 2004 to evaluate corn response to rates of split-applied N. The results were reported in...
Tipo: Article
Palavras-chave: Air Emissions; Chemistry; Fertilizer; Nitrogen; Soil.
Ano: 2011
URL: http://eprints.nwisrl.ars.usda.gov/1579/1/1535.pdf

Evapotranspiration and Soil Moisture-Fertilizer Interrelations with Irrigated Grain Sorghum in the Southern High Plains
Provedor de dados: 18
Autores: Jensen, M.E.; Sletten, W.H.
In 1956 and 1957 grain sorghum represented  37 percent of the harvested crop acreage in Texas. The largest concentrated area of sorghum  is in the High Plains where the proportion of  sorghum irrigated increased greatly during the  drought years of the 1950's. In 1959 the monetary  value of irrigated grain sorghum was estimated  to be about $100 million.  As reported by the U.S. Census of Agriculture  the acreages of irrigated grain sorghum harvested  in the 42-county High Plains area in 1950, 1954,  and 1959 were 387,000, 1 1 006,000, and 1,224,000  acres, respectively. The irrigated grain sorghum  acreage in the eight counties—Castro, Deaf  Smith, Floyd, Hale, Lamb, Lubbock, Farmer,  and Swisher—represented over 80 percent of the  total in the High...
Tipo: Technical Bulletin
Palavras-chave: Sorghum; Soil water (soil moisture); Fertilizer; Chemistry; Evapotranspiration; Mass Import - autoclassified (may be erroneous).
Ano: 1965
URL: http://eprints.nwisrl.ars.usda.gov/1136/1/25.pdf

Predicting Nitrogen Fertilizer Needs for Sugarbeets from Residual Nitrate and Mineralizable Nitrogen
Provedor de dados: 18
Autores: Carter, J.N.; Westermann, D.T.; Jensen, M.E.; Bosma, S.M.
Tipo: Article
Palavras-chave: Sugarbeet; Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1975
URL: http://eprints.nwisrl.ars.usda.gov/276/1/314.pdf

Matrix based fertilizers reduce nitrogen and phosphorus leaching in three soils
Provedor de dados: 18
Autores: Entry, J.A.; Sojka, R.E.
We compared the efficacy of matrix based fertilizers (MBFs) formulated to reduce NO3-, NH4+, and total phosphorus (TP) leaching, with Osmocoate 14-14-14, a conventional commercial slow release fertilizer (SRF) and an unamended control in three different soil textures in a greenhouse column study. The MBFs covered a range of inorganic N and P in compounds that are relatively loosely bound (MBF 1) to more moderately bound (MBF 2) and more tightly bound compounds (MBF 3) mixed with Al(SO4)3H2O and/or Fe2(SO4)3 and with high ionic exchange compounds starch, chitosan and lignin. When N and P are released, the chemicals containing these nutrients in the MBF bind N and P to a Al(SO4)3H2O and/or Fe2(SO4)3 starch-chitosan-lignin matrix. One milligram (8000 spores)...
Tipo: Article
Palavras-chave: Fertilizer.
Ano: 2008
URL: http://eprints.nwisrl.ars.usda.gov/1283/1/1260.pdf

Simulated erosion and fertilizer effects on winter wheat cropping Intermountain dryland area
Provedor de dados: 18
Autores: Massee, T.W.
Tipo: Article
Palavras-chave: Small grain; Fertilizer; Erosion; Mass Import - autoclassified (may be erroneous).
Ano: 1990
URL: http://eprints.nwisrl.ars.usda.gov/543/1/724.pdf

Predicting soil-extractable Zn, P, Fe, and Cu in a biosolids-amended dryland wheat agroecosystem
Provedor de dados: 18
Autores: Barbarack, K.A.; Ippolito, J.A.
Biosolids Beneficial Use Programs frequently involve multiple applications at agronomic rates, with plant-nutrient availability changing as elements react with soil constituents over time. Consequently, can regression equations reasonably estimate plant availability of Zn, P, Fe, and Cu, where multiple applications of Littleton and Englewood, Colorado Wastewater Treatment Plant biosolids are applied to a dryland wheat (Triticum aestivum L.)-fallow agroecosystem? Before each growing season, we added Littleton and Englewood biosolids at rates of 0 to 11.2 dry Mg ha?1 to plots arranged in randomized complete blocks with four replications per treatment. Soil samples collected after each wheat harvest were analyzed using an NH4HCO3-diethylenetriaminepentaacetic...
Tipo: Article
Palavras-chave: Manure; Fertilizer; Soil quality.
Ano: 2008
URL: http://eprints.nwisrl.ars.usda.gov/1269/1/1245.pdf

Using yield and protein history from dryland fields to improve nitrogen fertilizer recommendations
Provedor de dados: 18
Autores: Massee, T.W.; Painter, C.G.
Tipo: Conference or Workshop Item
Palavras-chave: Fertilizer; Mass Import - autoclassified (may be erroneous).
Ano: 1979
URL: http://eprints.nwisrl.ars.usda.gov/1043/1/625.pdf

Agro-industry production of sugarcane grown using subsurface drip fertigation with nitrogen and potassium
Provedor de dados: 86
Autores: Nascimento,Fábio Nunes do; Andrade Júnior,Aderson Soares de; Bastos,Edson Alves; Ribeiro,Valdenir Queiroz; Lopes,Alzeneide da Silva.
Abstract: The objective of this work was to evaluate the stalk yield, technological quality parameters, and sugar and alcohol productions in the first sugarcane (Saccharum officinarum) crop cycle, according to the response to N and K2O applications by subsurface drip fertigation. The experiment was carried out in a dystrophic Ultisol, in a randomized complete block design with four replicates. The treatments consisted of a 2X + 2X + 1 incomplete factorial arrangement with the application of 60, 80, 120, 160, and 180 kg ha-1 N and 60, 80, 120, 160, and 180 kg ha-1 K2O. The maximum estimated yield (217.5 Mg ha-1) was obtained with the application of 180 kg ha-1 N and 60 kg ha-1 K2O. Sugar and alcohol productions increased with N application above 120 kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum officinarum; Alcohol production; Fertilizer; Irrigation management; Sugarcane juice.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018001201346

Growth Stimulating Influence of Foliage Applied Brassica Water Extracts on Morphological and Yield Attributes of Bread Wheat under Different Fertilizer Regimes
Provedor de dados: 87
Autores: SHAHZAD,B.; CHEEMA,S.A.; FAROOQ,M.; CHEEMA,Z.A.; REHMAN,A.; ABBAS,T.
ABSTRACT: This study was conducted to explore the growth stimulating effect of foliage applied brassica water extract on growth and productivity of bread wheat (cv. Punjab 2011) at low and high fertilizer doses. The brassica water extract (5%) and the commercial growth regulator benzyl amino purine (BAP) (5 ppm) were applied alone and in combination at 30 and 45 days after sowing (DAS) under low fertilizer dose (125 kg ha-1 N and 90 kg ha-1 P) and high fertilizer doses (225 kg ha-1 N and 150 kg ha-1 P). Application of the brassica water extract (5%) significantly improved morphological traits such as crop growth rate, leaf elongation, leaf area index, plant height and number of productive tillers under both fertilizer regimes. Similarly, growth regulator...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Allelopathic water extracts; Plant growth regulators; Brassinolide.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100315

GROWTH AND YIELD RESPONSE OF MAIZE (Zea mays) TO INTER AND INTRA-ROW WEED COMPETITION UNDER DIFFERENT FERTILIZER APPLICATION METHODS
Provedor de dados: 87
Autores: MAQBOOL,M.M.; TANVEER,A.; ALI,A.; ABBAS,M.N.; IMRAN,M.; AHMAD,M.; ABID,A.A.
A field experiment was conducted for two consecutive years to study the effect of fertilizer application methods and inter and intra-row weed-crop competition durations on density and biomass of different weeds and growth, grain yield and yield components of maize. The experimental treatments comprised of two fertilizer application methods (side placement and below seed placement) and inter and intra-row weed-crop competition durations each for 15, 30, 45, and 60 days after emergence, as well as through the crop growing period. Fertilizer application method didn't affect weed density, biomass, and grain yield of maize. Below seed fertilizer placement generally resulted in less mean weed dry weight and more crop leaf area index, growth rate, grain weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Fertilizer; Grain yield; Maize; Plant growth.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100047

Determinants of Improved Maize Seed and Fertilizer Use in Kenya: Policy Implications
Provedor de dados: 31
Autores: Ouma,   James Okuro; De Groote,   Hugo; Owuor,   George.
Maize is a key food crop in Kenya. While maize yields increased from 1.25 t ha-1 in early 1960s to over 2 tonnes in 1982, they fell below 1.5 t ha-1 in 2000. Given the limited land area, there is no doubt that Kenya will have to rely more on modern technologies for increased yields .Use of improved maize varieties and fertilizers will therefore continue to be critical inputs for improving productivity. To improve production, it is important to understand factors determining adoption and intensity of use of modern technologies. A stratified 2-stage sampling design was used to select 1800 households, subsequently interviewed by means of structured questionnaire. Econometric models were used to explore factors influencing adoption and intensity of use of the...
Tipo: Conference Paper or Presentation
Palavras-chave: Maize; Adoption; Improved seed; Fertilizer; Credit; Extension; Kenya; Crop Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/25433

MARKET FORCES AND CHANGES IN THE PLANT INPUT SUPPLY INDUSTRY
Provedor de dados: 31
Autores: Olson,   Kent D.; Rahm,   Michael; Swanson,   Michael J.
Tipo: Journal Article
Palavras-chave: Agribusiness; Input Supply Industry; Fertilizer; Plant Nutrients; Seed; Capital; Market Forces; Structural Change; Porter’s Five Forces; Agribusiness; Q13; L10; L22; M22; L80.
Ano: 2010
URL: http://purl.umn.edu/100786

Chemical Use Reductions in Urban Fringe Agriculture
Provedor de dados: 31
Autores: Adelaja,   Adesoji O.; Sullivan,   Kevin P.; Hailu,   Yohannes G.; Govindasamy,   Ramu.
Using an augmented profit function framework designed to account for externalities related to chemical use in agriculture, this paper explains the chemical use choices of farmers in an urban fringe farming environment. It further estimates empirical logit models of reduced insecticide, fungicide, herbicide, and fertilizer usage. Results suggest that farmers who perceive their regulatory environment to be strict, who have experienced right-to-farm conflicts, and who have farms larger in size are more likely to reduce their chemical use over time, vis-à-vis other farmers. The results also suggest the importance of other farm structural and business climate factors in determining chemical use reduction choices.
Tipo: Journal Article
Palavras-chave: Chemical use; Sustainable agriculture; Herbicides; Fungicides; Fertilizer; Pesticides; Urban fringe; Agricultural and Food Policy; Agricultural Finance; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/95646

Promoting Fertilizer Use in Africa: Current Issues and Empirical Evidence from Malawi, Zambia, and Kenya
Provedor de dados: 31
Autores: Minde,   Isaac J.; Jayne,   Thomas S.; Crawford,   Eric W.; Ariga,   Joshua; Jones,   Govereh.
It is generally agreed that increasing agricultural productivity                         is critical to stimulating the rate of economic growth in Africa.                         There are many important and often complementary                         determinants of agricultural productivity. In this brief and the                         full paper it draws from, the focus is on fertilizer and                         improved seed, without intending to imply that they are the                         only or most significant productivity  determinants.
Tipo: Report
Palavras-chave: Fertilizer; Africa; Malawi; Zambia; Kenya; Crop Production/Industries; Food Security and Poverty; Q18.
Ano: 2008
URL: http://purl.umn.edu/54509

Fertilizer Response and Profitability in Rwanda: A Synthesis of Findings from MINAGRI Studies Conducted by The Food Security Research Project (FSRP) and The FAO Soil Fertility Initiative
Provedor de dados: 31
Autores: Kelly,   Valerie A.; Murekezi,   Anastase.
REPUBLIC OF RWANDA,  MINISTRY OF AGRICULTURE, ANIMAL RESOURCES, AND FORESTRY
Tipo: Report
Palavras-chave: Food security; Food policy; Rwanda; Fertilizer; Agribusiness; Crop Production/Industries; Q18.
Ano: 2000
URL: http://purl.umn.edu/55429

“Supply and demand trends for fertilizer in Zimbabwe: 1930 to date”: Key drivers and lessons learnt
Provedor de dados: 31
Autores: Minde,   Isaac J.; Mazvimavi,   Kizito; Murendo,   Conrad; Ndlovu,   Patrick V.
The fertilizer sector in Zimbabwe has evolved over the years in response to different policy changes based on the government’s priorities on agricultural development. The industry grew from the 1930s that targeted primarily large scale commercial farmers, through the liberalization period of the mid 1990s, and recent changes that have introduced controls on the marketing system. Since 2000, following the fast track land reform program, Zimbabwe has faced food insecurity challenges that have been exacerbated by the political and economic crises. This prompted the government to adopt policies that have reduced private sector interests in fertilizer supply. In this situation where explicit fertilizer markets have been absent, relief programs have been leading...
Tipo: Journal Article
Palavras-chave: Fertilizer; Supply and demand; Policy reform; Consumption trends; Crop Production/Industries.
Ano: 2010
URL: http://purl.umn.edu/96179

Agricultural Production Incentives: Fertilizer Markets and Insights from Kenya
Provedor de dados: 31
Autores: Wanzala,   Maria N.; Jayne,   Thomas S.; Staatz,   John M.; Mugera,   Amin W.; Kirimi,   Justus; Owuor,   Joseph.
The paper has several specific objectives. First, it identifies how fertilizer marketing costs and the types of fertilizers used have changed over the course of the liberalization process in Kenya. A second objective is to examine the fertilizer subsector in Kenya with a view to identifying organizational and institutional changes that could improve its performance. Various types of fertilizer supply chains serving farmers in western Kenya are identified, examine the cost structure of these supply chains, identify potential sources of cost reduction in these supply chains, and last, estimate the impact of illustrative scenarios for reducing fertilizer marketing costs on the profitability of maize production in western Kenya.
Tipo: Working or Discussion Paper
Palavras-chave: Food Security; Food Policy; Kenya; Fertilizer; Crop Production/Industries; Q18.
Ano: 2001
URL: http://purl.umn.edu/55150

Risk and Fertilizer Use in the Rainfed Rice Ecosystem of Tarlac, Philippines
Provedor de dados: 31
Autores: Abedullah; Pandey,   Sushil.
The study analyzes the effect of risk aversion on the optimal level of fertilizer by employing a pooled time-series cross-sectional survey data collected from 46 rainfed rice farmers in Tarlac, Central Luzon, Philippines.  Based on a heteroscedastic specification of production function, fertilizer was found to be a risk-increasing input, but the effect of risk aversion on the optimal fertilizer use was estimated to be moderate.  Explanations for the low average rate of application of fertilizer under rainfed conditions thus need to be found elsewhere.
Tipo: Journal Article
Palavras-chave: Expected utility; Fertilizer; Heteroscedastic production function; Just and Pope's and Antle's techniques; Rainfed; Risk aversion; Q12.
Ano: 2004
URL: http://purl.umn.edu/43446

Input Subsidy Programs and Commercial Market Development: Modeling Fertilizer Use Decisions in a Two-Channel Marketing System
Provedor de dados: 31
Autores: Xu,   Zhiying; Jayne,   Thomas S.; Govereh,   Jones.
Replaced with revised version of paper 07/18/06.
Tipo: Conference Paper or Presentation
Palavras-chave: Crowding out effect; Input marketing channels; Fertilizer; Sub-Saharan Africa; Survey data; Marketing.
Ano: 2006
URL: http://purl.umn.edu/21270

Who is Vouching for the Input Voucher?  Decentralized Targeting and Elite Capture in Tanzania
Provedor de dados: 31
Autores: Pan,   Lei; Christiaensen,   Luc J.M.
Through decentralized targeting of input vouchers new agricultural input subsidy programs aim to more effectively reach their objectives and target population. But, lingering fears of elite capture remain. These are borne out in the 2009 input voucher program in Kilimanjaro, Tanzania. Sixty percent of the voucher beneficiaries were households with village officials. This significantly reduced the targeting performance of the program, especially in unequal and remote communities. When targeting the poor, greater coverage and concentration in higher trust settings mitigated these concerns. Scrutiny remains important when relying on decentralized targeting, as is a clearer sense of purpose of input vouchers.
Tipo: Presentation
Palavras-chave: Local elite; Decentralization; Targeting; Fertilizer; Voucher program; Tanzania; International Development; Public Economics; H11; H42; O22.
Ano: 2012
URL: http://purl.umn.edu/122905

Framework and Initial Analyses of Fertilizer Profitability in Maize and Cotton in Zambia
Provedor de dados: 31
Autores: Donovan,   Cynthia; Damaseke,   M.; Govereh,   Jones; Simumba,   D.
Inorganic fertilizers will play a role in government programs, but whether or not a  single policy is valuable for all farmers depends upon the net gain for the farmers. The research  here seeks to demonstrate how to answer the question “Is fertilizer profitable in Zambia for  maize and cotton in the smallholder sector?” This study identifies the key components determining  profitability and then sets up a framework to evaluate the probability of farmers to obtain  profitable results with fertilizer use on maize and cotton. Several cases are selected and the  results are evaluated. Private profitability for the farmer at market prices is discussed,  leaving social profitability to other researchers. A simple method for farmers and extensionists  to use to...
Tipo: Report
Palavras-chave: Food security; Food policy; Zambia; Maize; Cotton; Fertilizer; Agribusiness; Q18.
Ano: 2002
URL: http://purl.umn.edu/54606

Optimal Cash Purchase Strategies to Reduce Fertilizer Price Risk
Provedor de dados: 31
Autores: Kenkel,   Philip L.; Kim,   Taeyoon.
Fertilizer price volatility has increased dramatically.  This research examines cash purchase and warehouse strategies.  Seventeen years of Oklahoma fertilizer prices are examined.  The results indicate that mechanical cash purchase strategies can be used to reduce the average cost or variance for fertilizer.  Optimal purchase dates are also identified.
Tipo: Conference Paper or Presentation
Palavras-chave: Fertilizer; Price risk; Seasonal price pattern; Agribusiness; Crop Production/Industries; Farm Management.
Ano: 2009
URL: http://purl.umn.edu/46570

Réponse et rentabilité des engrais au Rwanda: Synthèse des Résultats des Etudes du MINAGRI menées par le Food Security Research Project (FSRP) et l'Initiative sur la Fertilité des Sols de la FAO
Provedor de dados: 31
Autores: Kelly,   Valerie A.; Murekezi,   Anastase.
The objectives of this paper are: to present in synthesis form key conclusions and  recommendations of the FSRP/FAO-SFI studies on fertilizer profitability in Rwanda; and to  incorporate information and comments obtained from participants in the December 15, 1999,  MINAGRI Fertilizer Profitability Workshop conducted to present and validate the preliminary  findings of the two studies.
Tipo: Report
Palavras-chave: Food security; Food policy; Rwanda; Fertilizer; Agribusiness; Crop Production/Industries; Q18.
Ano: 2000
URL: http://purl.umn.edu/55423

Nitrogen in Agricultural Systems:  Implications for Conservation Policy
Provedor de dados: 31
Autores: Ribaudo,   Marc; Delgado,   Jorge; Hansen,   LeRoy T.; Livingston,   Michael J.; Mosheim,   Roberto; Williamson,   James M.
Nitrogen is an important agricultural input that is critical for crop production. However, the introduction of large amounts of nitrogen into the environment has a number of undesirable impacts on water, terrestrial, and atmospheric resources. This report explores the use of nitrogen in U.S. agriculture and assesses changes in nutrient management by farmers that may improve nitrogen use effi ciency. It also reviews a number of policy approaches for improving nitrogen management and identifi es issues affecting their potential performance. Findings reveal that about two-thirds of U.S. cropland is not meeting three criteria for good nitrogen management. Several policy approaches, including fi nancial incentives, nitrogen management as a condition of farm...
Tipo: Report
Palavras-chave: Reactive nitrogen; Nitrogen management; Fertilizer; Water quality; Greenhouse gas; Economic incentives; Conservation policy; Regulation; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/118022

Iowa Cooperative Fertilizer Retail Outlets: Farmers' Attitudes and Perceptions
Provedor de dados: 31
Autores: Gensch,   Dennis H.
Based on a sample of Iowa farmers, attributes of fertilizer retail dealers are evaluated. Honest management, making deliveries on time, relative size, willingness to negotiate price, and marketing grain are the most important attributes affecting a farmer's decision to patronize an independent or cooperative dealer. Cooperative outlets are generally in a strong competitive position. The study also shows much salient information can be generated by using such statistical methods as segmentation analysis, factor analysis, and the choice model approach.
Tipo: Report
Palavras-chave: Fertilizer; Supply cooperative; Farmers' perception; Dealer attributes; Segmentation analysis; Factor analysis; Choice model; Logit; Agribusiness.
Ano: 1983
URL: http://purl.umn.edu/52018

Benefits of Reducing Nutrient Variation in Fertilizer Mixes
Provedor de dados: 31
Autores: Chamberlain,   Peter J.; Shumway,   C. Richard.
This article examines nutrient deficiencies (below guaranteed levels) in major blended commercial fertilizers and their economic impact on net revenues of Texas farmers. Violations by fertilizer manufactures in meeting specific labeled nutrient levels were more than offset in economic value by excesses in other nutrients and by production of blends that contained more than the required levels of all nutrients. The study concluded that economic losses to Texas farmers would likely be associated with requiring nutrient levels to be more tightly distributed around the guaranteed or labeled nutrient levels.
Tipo: Journal Article
Palavras-chave: Benefits; Distribution; Fertilizer; Nutrient deficiencies; Agribusiness; Production Economics.
Ano: 1994
URL: http://purl.umn.edu/62353

Factors Influencing the Profitability of Fertilizer Use on Maize in Zambia
Provedor de dados: 31
Autores: Xu,   Z.; Guan,   Zhengfei; Jayne,   Thomas S.; Black,   J. Roy.
Major Findings: The additional maize produced from a given amount of fertilizer applied varied widely across households even after largely controlling for soil and rainfall conditions. The median estimated response rate was 15.9kgs of maize per kg nitrogen applied; Under the range of conditions and smallholder management practices, average maize fertilizer response rates declined as the application rate increased beyond 2 bags of urea and 2 bags of D compound; Factors raising the response rate and profitability of fertilizer use included timely availability, application rates less than the MOA 4x4 recommendation, use of animal draft power in land preparation, and use of hybrid seed. In remote areas, and given current management practices, fertilizer use...
Tipo: Report
Palavras-chave: Agriculture; Africa; Zambia; Fertilizer; Crop Production/Industries; Q12.
Ano: 2009
URL: http://purl.umn.edu/54639

PROGRESS AND PROBLEMS IN PROMOTING HIGH EXTERNAL-INPUT TECHNOLOGIES IN SUB-SAHARAN AFRICA: THE SASAKAWA GLOBAL 2000 EXPERIENCE IN ETHIOPIA AND MOZAMBIQUE
Provedor de dados: 31
Autores: Howard,   Julie A.; Kelly,   Valerie A.; Maredia,   Mywish K.; Stepanek,   Julie; Crawford,   Eric W.
Critics argue that high external input technologies are too costly for African farmers, and that pilot programs to promote them are economically unsustainable.  This paper assesses Sasakawa-Global 2000 programs in Ethiopia and Mozambique; budgets, yield models and subsector analysis help explain the radically different country results and prognoses for sustainable adoption.
Tipo: Conference Paper or Presentation
Palavras-chave: Technology adoption; Sub-Saharan Africa; Sasakawa-Global 2000; Maize; Fertilizer; International Development; Research and Development/Tech Change/Emerging Technologies; O002; O003.
Ano: 1999
URL: http://purl.umn.edu/21570

Factors Influencing the Profitability of Fertilizer Use on Maize in Zambia.
Provedor de dados: 31
Autores: Xu,   Zhiying; Guan,   Zhengfei; Jayne,   Thomas S.; Black,   J. Roy.
Fertilizer use remains very low in most of Africa despite widespread agreement that much higher use rates are required for sustained agricultural productivity growth. This study estimates maize yield response functions in agro-ecological Zone IIA, a relatively high potential zone of Zambia, to determine the profitability of fertilizer use under a range of small farm conditions found within this zone. The theoretical framework used in this study incorporates agronomic principles of the crop growth process. The model distinguishes different roles of inputs and non-input factors in crop production. We estimate the effects of conventional production inputs as well as household characteristics and government programs on maize yield for households in the...
Tipo: Report
Palavras-chave: Zambia; Maize; Fertilizer; Profitability; Crop Production/Industries; Q12.
Ano: 2009
URL: http://purl.umn.edu/54500

Policies to Promote Cereal Intensification in Ethiopia: A Review of Evidence and Experience
Provedor de dados: 31
Autores: Byerlee,   Derek R.; Spielman,   David J.; Alemu,   Dawit; Gautam,   Madhur.
Despite more than a decade of policies placing high priority on cereal intensification, backed by one of the highest rates of public expenditures on agricultural in Africa, Ethiopia has yet to see payoffs in terms of higher and more stable cereal yields, reduced dependency on food aid, improved food security, and lower consumer prices for staples. There is understandable concern about the performance, efficiency and sustainability of the agricultural sector, specifically in terms of the current systems for providing extension services, improved seed, fertilizer, and credit. This paper aims to illuminate possible solutions available to improving the prospects for cereal intensification in Ethiopia. The paper traces the largely state-led policies that have...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural development; Agricultural extension; Fertilizer; Seed markets; Ethiopia; Crop Production/Industries.
Ano: 2007
URL: http://purl.umn.edu/42406

Greenhouse Gas and Nitrogen Fertilizer Scenarios for U.S. Agriculture and Global Biofuels
Provedor de dados: 31
Autores: Elobeid,   Amani E.; Carriquiry,   Miguel A.; Fabiosa,   Jacinto F.; Mulik,   Kranti; Hayes,   Dermot J.; Babcock,   Bruce A.; Dumortier,   Jerome; Rosas,   Francisco.
This analysis uses the 2011 FAPRI-CARD (Food and Agricultural Policy Research Institute–Center for Agricultural and Rural Development) baseline to evaluate the impact of four alternative scenarios on U.S. and world agricultural markets, as well as on world fertilizer use and world agricultural greenhouse gas emissions. A key assumption in the 2011 baseline is that ethanol support policies disappear in 2012. The baseline also assumes that existing biofuel mandates remain in place and are binding. Two of the scenarios are adverse supply shocks, the first being a 10% increase in the price of nitrogen fertilizer in the United States, and the second, a reversion of cropland into forestland. The third scenario examines how lower energy prices would impact world...
Tipo: Working or Discussion Paper
Palavras-chave: Afforestation; Energy price; Ethanol tax credit; Fertilizer; Partial equilibrium model; Policy analysis; Agricultural and Food Policy; Demand and Price Analysis; Resource /Energy Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/107043

Promoting Fertilizer Use in Africa: Current Issues and Empirical Evidence from Malawi, Zambia, and Kenya
Provedor de dados: 31
Autores: Minde,   Isaac J.; Jayne,   Thomas S.; Crawford,   Eric W.; Ariga,   Joshua; Govereh,   Jones.
This study was funded jointly by the Regional Strategic Agricultural Knowledge Support System (Re-SAKSS) for Southern Africa, based at International Water Management Institute, Pretoria, South Africa, and by the United States Agency for International Development's Africa Bureau. Much of the data and analysis reported in this study was carried out under the Tegemeo Agricultural Monitoring and Policy Analysis Project, funded by USAID/Kenya; the Food Security Research Project/Markets, Trade and Enabling Environment (MATEP) Program, funded by USAID/Zambia and the Swedish International Development Agency; and by the DFID and USAID offices in Lilongwe, Malawi.
Tipo: Report
Palavras-chave: Fertilizer; Africa; Malawi; Zambia; Kenya; Crop Production/Industries; Q18.
Ano: 2008
URL: http://purl.umn.edu/54934

Custo de produção do milho de verão adubado com lodo de esgoto
Provedor de dados: 31
Autores: Quintana,   Nuria Rosa Gagliardi; Do Carmo,   Maristela Sumoes; De Melo,   Wanderley Jose.
O objetivo deste trabalho foi calcular o custo de produção do milho de verão fertilizado com lodo de esgoto. O milho foi cultivado com preparo reduzido de solo em experimento instalado no ano agrícola 2001/2002 na Fazenda de Ensino e Pesquisa da Faculdade de Ciências Agrárias e Veterinárias/UNESP, Câmpus de Jaboticabal, em área de 1/16 de hectare e solo LVef. Aplicou-se 10 t ha-1 de lodo de esgoto obtido por tratamento com polímero. A matriz econômica foi montada de acordo com o modelo de custos de produção adotado pelo Instituto de Economia Agrícola da Secretaria de Agricultura e Abastecimento do Estado de São Paulo. Para os cálculos, utilizaram-se os preços vigentes no mercado no ano agrícola correspondente. Com o emprego do Excel foram obtidos os custos...
Tipo: Conference Paper or Presentation
Palavras-chave: Chave: custos operacionais; Biossólido; Fertilização; Operational costs; Biosolid; Fertilizer; Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/102478

Nutrient Best Management Practice Insurance and Farmer Perceptions of Adoption Risk
Provedor de dados: 31
Autores: Mitchell,   Paul D.
This paper explores the effect farmer perceptions concerning how best management practice (BMP) adoption changes the profit distribution have on BMP adoption incentives and the  potential for insurance to  increase these incentives.  Adoption indifference curves illustrate the effect of farmer perceptions on BMP adoption incentives and the potential for insurance to expand the set of perceptions consistent with adoption.  Empirical analysis quantifies these conceptual results for nutrient BMP insurance, a new policy available to corn farmers as part of a USDA-Risk Management Agency pilot program in four states.  Results indicate that nutrient BMP insurance can have economically relevant effects on farmer adoption incentives.
Tipo: Journal Article
Palavras-chave: Adoption indifference curves; Crop insurance; Fertilizer; Green insurance; D8; Q12; Q16; Q21.
Ano: 2004
URL: http://purl.umn.edu/43460

Trends and Patterns in Fertilizer Use by Smallholder Farmers in Kenya, 1997-2007
Provedor de dados: 31
Autores: Ariga,   Joshua; Jayne,   Thomas S.; Kibaara,   Betty; Nyoro,   James K.
This study uses nationwide household panel survey data from 1996/97 to 2006/07 to examine trends in fertilizer use on maize by smallholder maize growers. The paper also compares these findings with fertilizer use rates according to other recent surveys in Kenya to assess comparability. We also examine the correlation between household fertilizer use and indicators of welfare such as wealth and landholding size. In addition, we use econometric techniques applied to household survey data to identify the main household and community characteristics associated with fertilizer purchases. Lastly, the study considers alternative policy strategies for maintaining smallholders’ access to fertilizer in the current context of substantially higher world fertilizer...
Tipo: Working or Discussion Paper
Palavras-chave: Fertilizer; Africa; Malawi; Kenya; Small Holders; Crop Production/Industries; Q13.
Ano: 2008
URL: http://purl.umn.edu/55169

The Nitrogen Fertilizer Value of Baled Broiler Litter for Cotton Production in the Arkansas Delta
Provedor de dados: 31
Autores: Kemper,   Nathan; Goodwin,   Harold L., Jr.; Mozaffari,   Morteza.
The export of poultry litter by baling efficiently packages litter for long-term storage and transportation. Use of baled poultry litter to supply the recommended rates of P and K and a portion of the N rate appears to be a feasible nutrient management strategy for cotton.
Tipo: Conference Paper or Presentation
Palavras-chave: Poultry waste management; Cotton production; Fertilizer; Crop Production/Industries; Environmental Economics and Policy; Q15; Q53.
Ano: 2008
URL: http://purl.umn.edu/6809

Sustaining Rapid Growth In India's Fertilizer Consumption: A Perspective Based on Composition of Use
Provedor de dados: 31
Autores: Desai,   Gunvant M.
The International Food Policy Research Institute, as part of the Conservative Group on International Agricultural Research, is profoundly concern about the new agricultural technology and the policies needed to encourage its adoption and increase its effectiveness in meeting major societal objectives. The spread of high-yielding varieties depends greatly on increased in fertilizer availability to farmers. Likewise, continued rapid growth in fertilizer uses depends on new crops varieties that can provide greater yields in response to larger doses of fertilizer. It is clear that during the next few decades the food supplies necessary to meet even minimum expected rates of population growth and growth in per capita income cannot be realized without the...
Tipo: Report
Palavras-chave: Fertilizer; India; Fertilizer industry; Crop Production/Industries.
Ano: 1982
URL: http://purl.umn.edu/42215

Promoting Fertilizer Use in Ethiopia: The Implications of Improving Grain Market Performance, Input Market Efficiency, and Farm Management
Provedor de dados: 31
Autores: Demeke,   Mulat; Said,   Ali; Jayne,   Thomas S.
This report assesses how the recent deregulation of fertilizer prices will affect the  profitability of fertilizer use on various crops throughout Ethiopia. The report also identifies  other policy measures that can increase the cost-effective use of fertilizer to promote productivity  growth throughout the food system.
Tipo: Working or Discussion Paper
Palavras-chave: Food security; Food policy; Ethiopia; Fertilizer; Grain markets; Crop Production/Industries; Q18.
Ano: 1997
URL: http://purl.umn.edu/55594

Learning from Doing: Using Analysis of Fertilizer Demonstration Plots to Improve Programs for Stimulating Fertilizer Demand in Rwanda
Provedor de dados: 31
Autores: Kelly,   Valerie A.; Nyirimana,   Joseph.
Food Security Research Project (FSRP) and Division of Agricultural Statistics (DSA) Ministry of Agriculture, Livestock and Forestry MINAGRI
Tipo: Report
Palavras-chave: Food security; Food policy; Rwanda; Fertilizer; Crop Production/Industries; Q18.
Ano: 2002
URL: http://purl.umn.edu/55381

Co-processed Poultry Litter and Dewatered Municipal Biosolids: Feasibility as an Alternative Management Approach for Surplus Waste
Provedor de dados: 31
Autores: Armstrong,   Andrew C.; Goodwin,   Harold L., Jr.; Hamm,   Sandra J.
Neither poultry litter nor DMB currently have economically sustainable utilization options that are also environmentally sustainable.  The purpose of this research is to investigate the appropriateness of blending poultry litter and DMB as a sustainable way to utilize these products, for use in agricultural practices, in a cost efficient manner.
Tipo: Conference Paper or Presentation
Palavras-chave: Poultry industry; Waste management; Fertilizer; Dewatered municipal biosolids; Environmental Economics and Policy; Q53; Q13; Q16.
Ano: 2007
URL: http://purl.umn.edu/34834

Assessing the Market for Poultry Litter in Georgia:  Are Subsidies Needed to Protect Water Quality?
Provedor de dados: 31
Autores: Mullen,   Jeffrey D.; Bekchanov,   Ulugbek; Karali,   Berna; Kissel,   David; Risse,   Mark L.; Rowles,   Kristin; Collier,   Sam.
Concerns about nutrient loads into our waters have focused attention on poultry litter applications.  Like many states with a large poultry industry, Georgia recently designed a subsidy program to facilitate the transportation of poultry litter out of vulnerable watersheds. This paper uses a transportation model to examine the necessity of a poultry litter subsidy to achieve water protection goals in Georgia. We also demonstrate the relationship between diesel and synthetic fertilizer prices and the value of poultry litter. Results suggest that a well functioning market would be able to remove excess litter from vulnerable watersheds in the absence of a subsidy.
Tipo: Journal Article
Palavras-chave: Fertilizer; Phosphorous; Poultry litter; Subsidy; Transportation model; Water quality; Environmental Economics and Policy; Marketing; Q12; Q13; Q25; Q53.
Ano: 2011
URL: http://purl.umn.edu/117948

Economic Analysis of Phosphorus Applications under Variable and Single-Rate Applications in the Bothaville District
Provedor de dados: 31
Autores: Maine,   Ntsikane; Nell,   Wilhelm T.; Lowenberg-DeBoer,   James; Alemu,   Zerihun Gudeta.
Variable-rate (VR) application of inputs in South African cash crop production is mainly concerned with fertilizer and lime, and this indicates the importance of these inputs in cash crop production. However, the profitability of VR application of inputs has not yet been investigated under South African conditions. This paper studies the maize yield response to variable-rate application of phosphorus (P) and the profitability thereof in South Africa, on the basis of data collected on a 104-hectare experimental field on a farm in the Bothaville district. The strip-plot design of 180 strips was used for this on-farm research experiment. This design involved treatments that run in the same direction across the field as planting and harvesting. The objective...
Tipo: Journal Article
Palavras-chave: Precision agriculture; Precision farming; Site-specific phosphorus management; Variable-rate application; Fertilizer; Yield response; South Africa; Crop Production/Industries.
Ano: 2007
URL: http://purl.umn.edu/7047

Synergistic Green and White Revolution: Evidence from Kenya and Uganda
Provedor de dados: 31
Autores: Jia,   Xiangping.
Rising agricultural productivity in developing countries is crucial to ease the tension of increased population and haunting concern on food security. Nevertheless the soaring price of fertilizer and sluggish dissemination of improved seed varieties prohibit the poor to tap benefits from increased productivity. In the presence of the pressing button on food security, subsidizing fertilizer and seeds is recently voiced heavily. This study reveals that the adoption of improved maize variety in Kenya leads to higher yield than that in Uganda. By introducing livestock programs, the agricultural productivity in Kenya is sustained with a synergy between the “Green Revolution” and “White Revolution”. To tap agricultural potentials in Africa, subsidizing...
Tipo: Conference Paper or Presentation
Palavras-chave: Green revolution; Livestock; Fertilizer; Food security; Propensity score matching; Africa; Agricultural and Food Policy; Crop Production/Industries; International Development; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies; Q12; Q18; Q56.
Ano: 2009
URL: http://purl.umn.edu/51367

World Fertilizer Model—The WorldNPK Model
Provedor de dados: 31
Autores: Rosas,   Francisco.
We introduce a world fertilizers model that is capable of producing fertilizer demand projections by crop, by country, by macronutrients, and by year. For each crop, the most relevant countries in terms of production, consumption, or trade are explicitly modeled. The remaining countries are modeled, for each crop, within a regional aggregate. The nutrient coverage includes nitrogen (N), phosphorous (P), and potassium (K). In this report we present the data and procedures used to set up the model as well as the assumptions made. The fertilizer model interacts with the yield equations of the FAPRI-ISU model (Food and Agricultural Policy Research Institute at Iowa State University), and by means of a set of production elasticities, projects each nutrient’s...
Tipo: Working or Discussion Paper
Palavras-chave: Agriculture; Fertilizer; Nitrogen; Phosphorous; Policy analysis; Potassium; Projections; Crop Production/Industries; Demand and Price Analysis; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/103223

Maize Yield Response to Fertilizer and Profitability of Fertilizer Use Among Small-Scale Maize Producers in Zambia
Provedor de dados: 31
Autores: Xu,   Zhiying; Govereh,   Jones; Black,   J. Roy; Jayne,   Thomas S.
Multi-year nationwide survey data is used to estimate maize yield response functions and determine profitability of fertilizer use by small-scale farmers in Zambia. There has been a dearth of empirical studies on economics of fertilization in the context of Sub-Saharan Africa. In this paper we identify major methodological issues arising from using survey data and estimate maize yield response functions for small-scale rural households that have various management practices and soil conditions in two major agro-climatic zones. Profitability of fertilizer use is determined for each group of households. Our findings provide the following key messages. First, households that obtained fertilizer on time and used animal draught power or mechanical power for...
Tipo: Conference Paper or Presentation
Palavras-chave: Maize; Yield; Fertilizer; Profitability; Survey data; Crop Production/Industries.
Ano: 2006
URL: http://purl.umn.edu/25730

Evaluation of EPIC for Three Minnesota Cropping Systems
Provedor de dados: 31
Autores: Chung,   S.W.; Gassman,   Philip W.; Huggins,   David R.; Randall,   G.W.
The Erosion Productivity Impact Calculator (EPIC) model was tested using four years of field data collected at a site near Lamberton, Minnesota, under three different crop rotations: continuous corn (Zea mays L.) or CC, soybean (Glycine max L.)-corn (SC), continuous alfalfa (Medicago sativa L.) or CA. The model was evaluated by comparing measured versus predicted subsurface drainage flow (tile flow), nitrate-nitrogen (NO3-N) loss in tile flow, residual NO3-N in the soil profile, crop N uptake, and yield. Initially, EPIC was run using standard Soil Conservation Service (SCS) runoff curve numbers (CN2) suggested for the soil type at the site. Two different SC runs were performed with a nitrogen fixation parameter denoted as parm(7) set at either 1.0 or 0.3,...
Tipo: Working or Discussion Paper
Palavras-chave: Modeling; Water quality; Crop rotation; Tile drainage; Nitrate leaching; Fertilizer; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/18479

Factors Influencing Wheat Yield and Variability: Evidence from Manitoba, Canada
Provedor de dados: 31
Autores: Carew,   Richard; Smith,   Elwin G.; Grant,   Cynthia.
Production functions to explain regional wheat yields have not been studied extensively in the Canadian prairies. The objective of this study is to employ a Just-Pope production function to examine the relationship between fertilizer inputs, soil quality, biodiversity indicators, cultivars qualifying for Plant Breeders’ Rights (PBR), and climatic conditions on the mean and variance of spring wheat yields. Using regional-level wheat data from Manitoba, Canada, model results show nitrogen fertilizer, temporal diversity, and PBR wheat cultivars are associated with increased yield variance. Mean wheat yield is reduced by the proportion of land in wheat, the interaction of growing temperature and precipitation, and spatial diversity. By contrast, higher soil...
Tipo: Journal Article
Palavras-chave: Climate; Fertilizer; Manitoba; Plant Breeders’ Rights; Production risk; Wheat; Yield; Agribusiness; Crop Production/Industries; Farm Management; Land Economics/Use; Productivity Analysis; Risk and Uncertainty; O18; Q16.
Ano: 2009
URL: http://purl.umn.edu/56649

Composition of Poultry Litter in Southern Brazil
Provedor de dados: 90
Autores: Rogeri,Douglas Antonio; Ernani,Paulo Roberto; Mantovani,Analú; Lourenço,Kesia Silva.
ABSTRACT Determining the chemical composition of poultry litter is important in order to apply this waste as soil fertilizer without causing negative environmental impacts. The aim of this study was to evaluate the average and variability of some chemical parameters of 165 samples of poultry litter produced from confined animal production facilities located in the states of Santa Catarina and Rio Grande do Sul, Southern of Brazil. Samples of approximately 5.0 L were collected on 20 points from the truck at the time the material was unloaded into the application sites. Subsequently, they were oven-dried at 65 °C and analyzed. Values of pH in water, dry matter, N, P and K were determined in all samples; N soluble in water (soluble-N), ammonium (NH+4-N) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Animal waste; Fertilizer; Organic nitrogen.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100525

Effect of swine residue rates on corn, common bean, soybean and wheat yield
Provedor de dados: 90
Autores: Sartor,Laércio Ricardo; Assmann,Alceu Luiz; Assmann,Tangriani Simioni; Bigolin,Paulo Egidio; Miyazawa,Mário; Carvalho,Paulo Cesar de Faccio.
Swine residue (SR) applied as nutrient source of crops such as corn, bean, soybean and wheat, besides representing an environmental-friendly way of disposing of organic waste resulting from swine production, may significantly increase grain yields, replacing mineral fertilizer. The objective was to evaluate the effect of SR rates on corn, common bean, soybean and wheat yields from 2002 to 2007, in comparison with mineral fertilizer. The experiment was carried out at the Instituto Agronômico do Paraná - IAPAR, Pato Branco, PR and consisted of increasing SR rates (0, 15, 30, 45, and 60 m³ ha-1) and one treatment with mineral fertilizer (NPK 4-30-10), using 250 kg ha-1 for bean and 300 kg ha-1 for corn, soybean and wheat. Also, in the treatment with mineral...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Micronutrient; Foliar nitrogen; Organic residues; Foliar phosphorous.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200035

Urea coated with oxidized charcoal reduces ammonia volatilization
Provedor de dados: 90
Autores: Paiva,Diogo Mendes de; Cantarutti,Reinaldo Bertola; Guimarães,Gelton Geraldo Fernandes; Silva,Ivo Ribeiro da.
Urea is the most consumed nitrogen fertilizer in the world. However, its agronomic and economic efficiency is reduced by the volatilization of NH3, which can reach 78 % of the applied nitrogen. The coating of urea granules with acidic compounds obtained by charcoal oxidation has the potential to reduce the volatilization, due to the acidic character, the high buffering capacity and CEC. This work aimed to evaluate the effect of HNO3-oxidized carbon on the control of NH3 volatilization. These compounds were obtained by oxidation of Eucalyptus grandis charcoal, produced at charring temperatures of 350 and 450 ºC, with 4.5 mol L-1 HNO3. The charcoal was oxidized by solubilization in acidic or alkaline medium, similar to the procedure of soil organic matter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Nitrogen; Urease.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400016

Potential use of a chemical leaching reject from a kaolin industry as agricultural fertilizer
Provedor de dados: 90
Autores: Ribeiro,Fabiana Rodrigues; Egreja Filho,Fernando Barboza; Fabris,José Domingos; Mussel,Wagner da Nova; Novais,Roberto Ferreira.
The industrial refining of kaolin involves the removal of iron oxides and hydroxides along with other impurities that cause discoloration of the final product and depreciate its commercial value, particularly undesirable if destined to the paper industry. The chemical leaching in the industrial processing requires treatments with sodium hyposulfite, metallic zinc, or sulfuric and phosphoric acids, in order to reduce, dissolve and remove ferruginous compounds. To mitigate the environmental impact, the acidic effluent from the leaching process must be neutralized, usually with calcium oxide. The resulting solid residue contains phosphorous, zinc, and calcium, among other essential nutrients for plant growth, suggesting its use as a macro and micronutrient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Industrial residue; Fertilizer; Kaolin refining.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832007000500011

Orchid growth and nutrition in response to mineral and organic fertilizers
Provedor de dados: 90
Autores: Rodrigues,Donizetti Tomaz; Novais,Roberto Ferreira; Alvarez V.,Víctor Hugo; Dias,José Maria Moreira; Villani,Ecila Mercês de Albuquerque.
Orchid fertilization is fundamental for a satisfactory plant growth and development for commercial orchid production as well as in collections. Mineral and/or organic sources can be used for fertilization. The objective of this study was to evaluate the effect of the use of organic and/or mineral fertilizers on the nutrition and growth of orchid (Laelia purpurata 'werkhanserii' x L. lobata 'Jeni') seedlings in greenhouse. The following fertilizers were tested: an NPK fertilizer + micronutrients; a Ca source in the form of calcium nitrate; two organic fertilizers, one prepared with a mixture of bone meal, castor meal and ash, and a similar commercial fertilizer. The organic fertilizers were distributed on the surface of the pots every two months and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orchidaceae; Fertilizer; B toxicity; Bone meal; Castor meal; Ash.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500014

Monitoring nitrogen nutrition in cotton
Provedor de dados: 90
Autores: Rosolem,Ciro Antonio; van Mellis,Vanessa.
Both N excess and deficiency may affect cotton yield and quality. It would therefore be useful to base the N management fertilization on the monitoring of the nutritional status. This study investigated the correlations among the following determination methods of the N nutritional status of cotton (Gossypium hirsutum L., var. Latifolia): chlorophyll readings (SPAD-502®, Minolta), specific-ion nitrate meter (Nitrate Meter C-141, Horiba-Cardy®), and laboratory analysis (conventional foliar diagnosis). Samples were taken weekly from two weeks before flowering to the fifth week after the first flower. The experiment was conducted on the Fazenda Santa Tereza, Itapeva, State of São Paulo, Brazil. The crop was fertilized with 40 kg ha-1 N at planting and 0, 30,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Gossypium hirsutum; Foliar diagnosis; Nutritional status.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500013

Substrates and controlled-release fertilizations on the quality of eucalyptus cuttings
Provedor de dados: 91
Autores: Silva,Richardson B. G. da; Silva,Magali R. da; Simões,Danilo.
To produce cuttings with quality, the most appropriate nutritional management strategies should be sought to reduce wastage of fertilizer, while accounting for the characteristics of each substrate. This study evaluated the effect of substrates and doses of controlled-release fertilizer on the quality of Eucalyptus grandis Hill ex Maiden x Eucalyptus urophylla S. T. Blake cuttings. The substrates consisted of several mixtures: vermiculite+carbonized rice chaff+coconut fibre (1:1:1); vermiculite+coconut fibre (1:1); and vermiculite+carbonized rice chaff (1:1). These mixtures were added to 2, 4, 6 and 8 kg of controlled-release fertilizer per cubic meter of substrate. The substrates that do not support root development and have lower water retention,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nutrients; Fertilizer; Root system; Water retention; Forest nursery.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001100005

Nitrogen and potassium fertilization affecting the plum postharvest quality
Provedor de dados: 94
Autores: Cuquel,Francine Lorena; Motta,Antonio Carlos Vargas; Tutida,Inês; Mio,Louise Larissa May de.
The goal of this research was evaluated the effects of potassium and nitrogen fertilization on the plum (Prunus salicina) fresh fruit quality and after cold storage. The experiment was carried out in a five year-old plum orchard 'Reubennel', located at Araucaria County, Parana State, Southern Brazil, in a Haplumbrept Soil. Potassium fertilizer was applied at 55 and 110 kg/ha/year of K2O, as KCl. Nitrogen fertilizer was applied at 40, 80, 120, 160 and 200 kg/ha/year of N, as urea. It was used a split-plot design in a factorial scheme (2x5). One hundred plum fruits were harvested from each plot, in the same day, when 25 to 50% of the peel presented yellow-reddish color. At harvest and after 17, 27 and 37 days of storage at 0 ± 0.5 ºC, the flesh firmness, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prunus salicina; Stone fruit; Storage; Nutrition; Fertilizer.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000500041

Effect of the different fertilizer rates on the growth of seedling of Aspidosperma Parvifolium A. DC.
Provedor de dados: 22
Autores: Menegatti, Renata Diane; Guollo, Karina; Navroski, Márcio Carlos; Vargas, Oieler Felipe.
The objective of this study was to evaluate the use of different fertilizer doses of controlled release in the production of seedlings Aspidosperma parvifolium A. DC. The experiment was carried out in a nursery at the University of the State of Santa Catarina, in the city of Lages. The seedlings originated from seeds, sown in plastic bags of 500 cm3 and filled with commercial substrate Tecnomax®. The design was completely randomized with four treatments, consisting of four increasing doses (0, 2.5, 5 and 7.5 g L-1) Osmocote® fertilizer. For each treatment were used five replications with four plants each. At 150 days after emergence were evaluated the diameter of the neck, total seedling height, number of leaves per seedling and, leaf area. It was found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Aspidosperma parvifolium; Osmocote®; Seedling production.
Ano: 2017
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/13908

GROWTH OF Inga vera WILLD. SUBSP. Affinis UNDER RIZOBIA INOCULATION
Provedor de dados: 127
Autores: Maia,Julio; Scotti,Maria Rita.
Nitrogen, in general, is the largest limiting plant growth nutrient in the tropics and is required as a synthetic fertilizer to improve plants productivity. Therefore, studies aiming in understanding and using nitrogen fixation by leguminous trees have been done as a low-cost alternative for chemical fertilizer. Native legume trees such as Inga vera have been recommended in the rehabilitation of degraded areas due their ability to establish symbiosis with nitrogen fixation organisms replacing nitrogen fertilization. These species are able to increase soil organic matter, nitrogen and phosphorus availability. Thus, the present study aims to assess the inoculation effects of native rhizobia strains on nodulation, dry matter production, nitrogen and...
Tipo: Journal article
Palavras-chave: Nitrogen; Fertilizer; Symbiotic efficiency.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000200005

Soil compaction and fertilization in soybean productivity
Provedor de dados: 63
Autores: Beutler,Amauri Nelson; Centurion,José Frederico.
Soil compaction and fertilization affect soybean development. This study evaluated the effects of soil compaction and fertilization on soybean (Glycine max cv. Embrapa 48) productivity in a Typic Haplustox under field conditions in Jaboticabal, SP, Brazil. A completely randomized design with a 5 x 2 factorial layout (compaction vs. fertilization), with four replications in each treatment, was employed. Each experimental unit (replicate) consisted of a 3.6 m² useful area. After the soil was prepared by cultivation, an 11 Mg tractor passed over it a variable number of times to create five levels of compaction. Treatments were: T0= no compaction, T1= one tractor pass, T2= two, T4= four, and T6= six passes, and no fertilizer and fertilizer to give soybean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bulk density; Penetration resistance; Fertilizer; Yield.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600010

Nitrogen dynamics in a soil-sugar cane system
Provedor de dados: 63
Autores: Oliveira,Júlio César Martins de; Reichardt,Klaus; Bacchi,Osny O.S.; Timm,Luis Carlos; Dourado-Neto,Durval; Trivelin,Paulo César Ocheuse; Tominaga,Tânia Toyomi; Navarro,Roberta de Castro; Piccolo,Marisa de Cássia; Cássaro,Fábio Augusto Meira.
Results of an organic matter management experiment of a sugar cane crop are reported for the first cropping year. Sugar cane was planted in October 1997, and labeled with a 15N fertilizer pulse to study the fate of organic matter in the soil-plant system. A nitrogen balance is presented, partitioning the system in plant components (stalk, tip and straw), soil components (five soil organic matter fractions) and evaluating leaching losses. The 15N label permitted to determine, at the end of the growing season, amounts of nitrogen derived from the fertilizer, present in the above mentioned compartments.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Nitrogen; N label; Soil; Sugar cane.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000300015

Conversion of ammonium to nitrate and abundance of ammonium-oxidizing-microorganism in Tropical soils with nitrification inhibitor
Provedor de dados: 63
Autores: Barth,Gabriel; Otto,Rafael; Almeida,Risely Ferraz; Cardoso,Elke Jurandy Bran Nogueira; Cantarella,Heitor; Vitti,Godofredo Cesar.
ABSTRACT The use of nitrification inhibitors (NIs; dicyandiamide - DCD) is an alternative to reduce oxidation of ammonium (NH4+-N) to nitrate (NO3–-N) in the soil, reducing NO3–-N losses from fertilization practices. Based on the hypothesis that DCD reduces conversion of NH4+-N to NO3–-N in tropical soils and inhibits ammonia oxidizing microorganisms (AOM) abundance, soils from the Piracicaba region, São Paulo, with different textures (sand, loam and clay) were incubated with ammonium sulphate (AS) and DCD. Contents of NH4+-N, NO3–-N, soil pH, and AOM abundance were quantified periodically. Ammonium sulphate increased AOM abundance in all soils, but AS+DCD presented AOM abundances similar to the control. During 90 days of incubation, the effectiveness of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DCD; Nitrogen losses; Ammonium sulphate; Fertilizer.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000401404

Marandu palisadegrass growth under nitrogen and sulphur for replacing signal grass in degraded tropical pasture
Provedor de dados: 63
Autores: Bona,Fabiano Daniel De; Monteiro,Francisco Antonio.
The degradation of Brachiaria decumbens Stapf. (Signal grass) pastures has resulted in a big problem for the Brazilian cattlemen. The objective of this study was to assess fertilization with nitrogen (N) and sulphur (S) rates on yield of Brachiaria brizantha (Hochst. ex A. Rich.) Stapf. cv. Marandu (Marandu palisadegrass) under establishment in a soil supporting degrading pasture of Brachiaria decumbens Stapf. Additionally, the N and S concentrations in plant tissue and soil according to the rates of these nutrients were evaluated. The study was carried out in a greenhouse in pots filled with an Entisol with high organic matter content. Five rates of N (0; 100; 200; 300 and 400 mg dm-3) and five rates of S (0; 10; 20; 30 and 40 mg dm-3) were tested in a 5²...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria brizantha (Hochst. ex A. Rich.) Stapf.; Fertilizer; Production; N:S ratio.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500011

Energy embodiment in Brazilian agriculture: an overview of 23 crops
Provedor de dados: 63
Autores: Veiga,João Paulo Soto; Romanelli,Thiago Libório; Gimenez,Leandro Maria; Busato,Patrizia; Milan,Marcos.
The amount of energy required to produce a commodity or to supply a service varies from one production system to another and consequently giving rise to differing levels of environmental efficiency. Moreover, since energy prices have been continuously increasing over time, this energy amount may be a factor that has economic worth. Biomass production has a variety of end-products such as food, energy, and fiber; thus, taking into account the similarity in end-product of different crops (e.g.: sunflower, peanuts, or soybean for oil) it is possible to evaluate which crops require less energy per functional unit, such as starch, oil, and protein. This information can be used in decision-making about policies for food safety or bioenergy. In this study, 23...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: EROI; Starch; Oil; Fertilizer; Fiber; Energy balance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000600471

การเพิ่มผลผลิตข้าวหอมอินทรีย์และการปลดปล่อยก๊าซมีเทน ปีที่ 2: การใช้ถั่วเขียวเป็นปุ๋ยพืชสดโดยหว่านเมล็ดถั่วเขียวพร้อมเมล็ดข้าว
Provedor de dados: 106
Autores: Patcharee Saenjan; Duangsamorn Tulaphitak; Niwat Luangchaisri; Anan Polthanee.
Tipo: PhysicalObject
Palavras-chave: Rice; Methane; Fertilizer; Organic rice; Mungbean seed; Irrigation; ข้าวหอมอินทรีย์; ถั่วเขียว; ข้าวอินทรีย์; การเพิ่มผลผลิตข้าว; ก๊าซมีเทน; ปุ๋ยอินทรีย์; การจัดการน้ำ; นาข้าว; ระบบการปลูกพืช; ปุ๋ยพืชสด.
Ano: 2007
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5118

Profitability of new maize technology in Thailand :  An economic analysis of three years verification trials
Provedor de dados: 106
Autores: Harrington, L.W.; Rachain Thiraporn; Sarun Wattanutchariya.
19 tables
Palavras-chave: Corn; Maize; Economic analysis; Verification trial; Production technology; Fertilizer; Weeds; Hybrids; ข้าวโพด; เทคโนโลยีการผลิต; การวิเคราะห์ทางเศรษฐศาสตร์; ปุ๋ย; วัชพืช; ลูกผสม.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4609

Long-term effect of mulching with fertilizer under corn-legumes cropping on crop yield and improvement of soil chemical and physical properties
Provedor de dados: 106
Autores: Samnao Phetchawee; Nonglak Vibulsukh; Maleewon Theppoolpon; Withaya Marsangsan.
2 ill., 7 tables
Palavras-chave: Corn; Maize; Fertilizer; Mulching; Corn-legume cropping system; Yields; Soil chemical properties; Soil physical property; Long-term effect; ข้าวโพด; ปุ๋ย; การใช้วัสดุคลุมดิน; ระบบการปลูกพืช; พืชตระกูลถั่ว; ผลผลิต; คุณภาพทางฟิสิกส์ของดิน; คุณสมบัติทางเคมีของดิน.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4600

การจัดเขตศักยภาพการผลิตข้าวจังหวัดเพชรบุรี
Provedor de dados: 106
Autores: Satit Tayapat; Saowaluck Arom; Tanadun Chuenmathunpaijit.
Rice production potential zoning of Petchaburi province had been conducted from 2010 to 2012. Research methodology composted of general rice production information collection, soil sampling and crop cutting from farmer field, and field experiment. The research found that there were 4 major rice varieties growing in the area Chainat1, Phitsanulok2, Suphanburi60 and Suphanburi1. The field experiments for comparing of fertilizer application were conducted 2 seasons at 12 locations. The results showed that L1 area, recommended fertilizer application (F1) gave the average yield of 1,067 kg/rai, while fertilizer application base on soil analysis (F2) gave the average yield of 1,222 kg/rai. Farmers’ practice of fertilizer application (F3) gave the average yield...
Tipo: PhysicalObject
Palavras-chave: Rice potential zoning; Petchaburi province; Yield; Rice production; Landform; Fertilizer; Cost; การจัดเขตศักยภาพการ; จังหวัดเพชรบุรี; ผลผลิตข้าว; การผลิตข้าว; ข้าว; ลักษณะดิน; การใส่ปุ๋ย; การจัดการปุ๋ย; การทดสอบพันธุ์; ต้นทุนการผลิต; การลดต้นทุน; การดูแลรักษา; ศักยภาพการผลิต.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5690

สหสัมพันธ์ของค่าวิเคราะห์ฟอสฟอรัสในดินกับผลผลิตของข้าวฟ่าง
Provedor de dados: 106
2 ill., 1 table
Palavras-chave: Sorghum; Grain yield; Soil phosphorus; Soil fertility; Fertilizer; ข้าวฟ่าง; ปุ๋ยฟอสฟอรัส; ปุ๋ย; ผลผลิต.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4397

การจัดเขตศักยภาพการผลิตข้าวจังหวัดสมุทรสาคร สมุทรปราการ และสมุทรสงคราม
Provedor de dados: 106
Autores: Opas Worawas; Noppadol Prayoonsuk; Nopdara Fakprasert; Chitnucha Buddhaboon; Benjamas Rossopa; Kingkaw Kunket.
Rice production potential zoning in Samutsakhon, Samutprakhran and Samutsongkhram provinces was conducted in wet season 2010. Research methodology consisted of general rice production information collection, soil sampling and crop cutting from farmer field, field experiment, mapping of rice zoning. The study showed that the two crops of recommended rice varieties with transplanting were common practice in this area. Insect pest and diseases were controlled by chemical application. The compound fertilizer of 16-20-0 N-P2O5-K2O and 16-8-4 N-P2O5-K2O were applied depending on extractable potassium in the area. Field experiment indicated that rice yield of R3 level (550-700 kg/rai) could be increased to be R2 level (701-850 kg/rai) by using appropriate...
Tipo: PhysicalObject
Palavras-chave: Rice potential zoning; Paddy soil; Rice; Fertilizer application technology; Landform; Fertilizer; Cost; Samutsakhon province; Samutprakan province; Samutsongkhram province; เขตศักยภาพการผลิตข้าว; ดินนา; ข้าว; เทคโนโลยีการใช้ปุ๋ย; ข้าว; ลักษณะดิน; การใส่ปุ๋ย; การจัดการปุ๋ย; การวิเคราะห์ดิน; ต้นทุนการผลิต; การลดต้นทุน; การดูแลรักษา; ศักยภาพการผลิต; จ.สมุทรสาคร; จ.สมุทรปราการ; จ.สมุทรสงคราม.
Ano: 2013
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5691

การเพิ่มผลผลิตข้าวหอมอินทรีย์และการปลดปล่อยก๊าซมีเทน ปีที่ 1: การคัดเลือกเทคโนโลยีการจัดการน้ำและปุ๋ยอินทรีย์ต่อการเพิ่มผลผลิตข้าวอินทรีย์ที่ปล่อยก๊าซมีเทนต่ำในนาเกษตรกร
Provedor de dados: 106
Autores: Patcharee Saenjan; Niwat Luangchaisri; Anan Polthanee; Duangsamorn Tulaphitak.
Tipo: PhysicalObject
Palavras-chave: Organic rice; Methane; Irrigation; Fertilizer; Climate change; Attitudes; ข้าวอินทรีย์; การลดก๊าซมีเทน; การเพิ่มผลผลิตทางการเกษตร; วัสดุอินทรีย์; การไถกลบ; ดินนา่; นาข้าว; ทัศนคติ; เกษตรกร; ต้นทุนการผลิต; ผลตอบแทน; การเปลี่ยนแปลงสภาพภูมิอากาศ.
Ano: 2005
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5119

การใช้ปุ๋ยอย่างเหมาะสมสำหรับการปลูกข้าวอย่างยั่งยืน
Provedor de dados: 106
Autores: Rochana Tangkoonboribun; Suriya Sassanarakkit; Preecha Roongkae; Prasit Bumroongsuk; Rattana Tantisiriwit.
Tipo: Collection
Palavras-chave: Fertilizer; Chemical fertilizer; Organic  fertilizer; Paddy; Soil fertility; Sustainable rice production; ดินนา; ปุ๋ยเคมี; ปุ๋ยอินทรีย์; การปลูกข้าวอย่างยั่งยืน; ความอุดมสมบูรณ์ของดิน.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5364

การเปรียบเทียบวิธีการใช้ปุ๋ยและการกำจัดวัชพืชในการผลิตอ้อยอินทรีย์
Provedor de dados: 106
Autores: Nattaya Kalaphakdee; Artasit buntoom.
Fertilizer application and weed control methods were compared to determine the best method for organic sugarcane production under supplemental irrigation at BSI farm. The experimental design was 2x5 factorial in RCB with 3 replications. The first factor was two sorts fertilizers as followers of fertilizer application, there being kinds BSI organic fertilizer at the rate of 200 kg/rai and chemical fertilizer (basal application with 15-15-15 at the rate of 50kg/rai). The second factor was 5 weed control methods which consisted of 1) intercropping with cowpea 2) hand weeding 3) cultivated by using rotary plow attached to small tractor (24 hp) 4) covered interrow of cane by using plastic and 5) herbicide application as farm practice. The results indicated that...
Tipo: Collection
Palavras-chave: Fertilizer; Intercropping; ปุ๋ยเคมี; การปลูกพืชแซม; การกำจัดวัชพืช; การใช้ปุ๋ย; การผลิตอ้อยอินทรีย์; ผลผลิต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5566

Controlled release fertilizer and container volumes in the production of Parapiptadenia rigida (Benth.) Brenan seedlings
Provedor de dados: 1
Autores: Gasparin, Ezequiel; Araujo, Maristela Machado; Saldanha, Cleber Witt; Tolfo, Caira Viñas.
Growing demand for native tree seedlings will require improvements in quality standards of production processes through the use of more efficient cultivation techniques. This study evaluated the effects of different doses of controlled release fertilizer (CRF) and different container volumes in the production of Parapiptadenia rigida seedlings. We examined the effects of five different concentrations (0, 3, 6, 9 and 12 g L-1 substrate) of CRF (18-5-9 NPK) and three different container volumes (50, 110 and 180 cm3) on seedling height (H) and collar diameter (CD) measured monthly for seven months and then calculated H/CD ratios. After 210 days of growth, the dry masses of the aerial portions, root systems, and total masses were determined, as well as the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.00.00.00-4 native species; Fertilizer; Containers; Nursery. 5.01.03.04-0.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19528

Production and evaluation of compost tea for cultivation of Amaranthus hybridus
Provedor de dados: 111
Autores: BAKO, TANKO; MAMAI, EZEKIEL AMBO; ISTIFANUS, AKILA BARDEY.
The application of organic fertilizer to the soil is considered as good agricultural practice because it improves the fertility of the soil and plant quality. The aim of the study was to produce compost tea using poultry droppings, cow dungs and water leaf (Talinum triangulare) in a ratio 5:5:1 and evaluate its effects on soil properties, growth and yield of Amaranthus hybridus. The study was carried out in Jalingo, Taraba State, North-Eastern Nigeria in July, 2019. The experimental variables include control (no treatment), 1 kg of compost per 10 L of water compost tea, 1 kg of compost per 20 L of water compost tea, 1 kg of compost per 30 L of water compost tea, 500 kg ha-1solid compost and 500kg ha-1 NPK fertilizer. The treatment combinations were done in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Yield; Plants; Organic; Fertilizer.
Ano: 2021
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6941

Effects of different plant densities, fertilization rates and furrowing on foraged soybean production
Provedor de dados: 111
Autores: Shamsabadi, Hossein-Ali Tash; Ahmad, Desa; saberi, Alireza.
A field experiment carried out at the research farm, Gorgan University of Agricultural Sciences and Natural Resources, Iran, in 2013. The main objective of the present study was to determine the effect of plant densities, fertilization rates and furrowing on yield and some morphological characteristics of soybean. The other objective of this study was, if pod packaging phenomena did not happen; can be used from morphologic advantages of this plant as replacement strategy and as foraged soybean or not. Therefore, an experimental design laid out in a randomized complete block design arranged in a split plot factorial with three replications. The main plots attributed to planting density at three levels (100000, 150000 and 200000 bush ha-1). The sub plots...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Furrower; Soybean (Glycin Max); Seeding rate.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4137

Integrated approach for prediction of centrifugal fertilizer spread patterns
Provedor de dados: 111
Autores: Marinello, Francesco; Pezzuolo, Andrea; Gasparini, Franco; Sartori, Luigi.
The present paper proposes a numerical approach for prediction of behavior of those fertilizers spreaders based on centrifugal disc functioning. In particular results from finite element multi-body simulations provided by commercial software are used in order to define boundary conditions of field tests carried out concurrently. Results are then integrated into a mathematical model to rapidly generate distribution charts and distribution diagrams.Such integrated approach can be implemented to effectively calibrate a theoretical model which provide simulations on different machine settings conditions: as a final point simulations allow fast testing of different distribution conditions, helping definition of those which minimize the variability of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Simulation; Fertilizer; Spreader; Distribution.
Ano: 2017
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4177

Effect of polymers associated with N and K fertilizer sources on Dendrathema grandiflorum growth and K, Ca and Mg relations
Provedor de dados: 52
Autores: Regiane Cristina Marcato,Sita; Reissmann,Carlos Bruno; Marques,Renato; Oliveira,Edilson de; Taffarel,Angela Daniela.
This study was conducted to evaluate the effect of polymer used with different nitrogen and potassium sources on the growth and nutrition of chrysanthemum (Dendranthema grandiforum, var. "Virginal") and on chemical characteristics of substrate. Two substrates were evaluated: 1) composite with 50 % organic soil, 45 % sand, and 5 % composted tobacco; 2) plow layer soil (0-20 cm depth; red oxisol typical dystrophic). The experimental design was a factorial (4x2x2) and included four polymer rates (0, 1, 2, and 4 g kg-1of substrate), two nitrogen ((NH4)2SO4 and (H2N)2CO), and two potassium (KCl and K2SO4) sources. Dry biomass, flower number, and concentration of K, Ca, and Mg were evaluated. Inverse relationships between polymer rates and plant biomass,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrogel; Polyacrylamide; Chrysanthemum; Fertilizer; Macronutrients.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300002

Utilization of rocks and ectomycorrhizal fungi to promote growth of eucalypt
Provedor de dados: 58
Autores: Alves,Luciano; Oliveira,Vetúria L.; Silva Filho,Germano N.
The utilization of rocks as fertilizers is limited by their low solubility. However, solubilization may be achieved by some micro-organisms, such as ectomycorrhizal fungi (ECMf). The aim of this study was to evaluate the potential of seven isolates of ECMf to solubilize two rocks, alkaline breccia and granite, and to liberate potassium and phosphorus for Eucalyptus dunnii seedlings under greenhouse conditions. Fungal inoculants were produced in a peat-vermiculite-liquid medium mixture and added to the planting substrate at 10 %. Rocks were ground up and added at 0.500 mg and 16.0 mg per plant, as a source of phosphorus and potassium, respectively. Other nutrients were added and E. dunnii seeds were sown. Control plants, non-inoculated, were fertilized with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ectomycorrhizas; Inoculant; Ground rock; Fertilizer; Eucalyptus dunnii.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300018

Effect of Californian Red Worm (Eisenia foetida) on the Nutrient Dynamics of a Mixture of Semicomposted Materials
Provedor de dados: 117
Autores: Castillo,Hugo; Hernández,Adriana; Dominguez,David; Ojeda,Damaris.
The efficiency of composting processes with and without the addition of Californian red worms (Eisenia foetida) was evaluated, using manure of dairy cows to generate organic fertilizer. Several parameters were assessed as physio-chemical indicators of maturity, such as temperature, pH, C/N ratio, phytotoxicity and macro and micronutrients at 25 and 54 ws (mature and stored products, respectively). A linear model was used in the statistical analysis, with four replicates that included as fixed effects, the composting systems and time. At 25 wk, both systems reduced the C/N ratio to values of 15.5 in vermicompost and 17.1 in semi-compost. The content of total N, N-NO3, Ca and some micronutrients also increased. K and Na concentrations were higher in the...
Tipo: Journal article
Palavras-chave: Fertilizer; Organic; Maturation; Stability.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300014

Yield, yield features, phytochemical composition, antioxidant and antibacterial activities of Abutilon indicum cultivated under different fertilizers
Provedor de dados: 118
Autores: Yaldiz,Gulsum; Yildirim,Arzu Birinci; Arici,Yeliz Kasko; Camlica,Mahmut.
G. Yaldiz, A. B. Yildirim, Y. K. Arici, and M. Camlica. 2016. Yield, yield features, phytochemical composition, antioxidant and antibacterial activities of Abutilon indicum cultivated under different fertilizers. Cien. Inv. Agr. 43(3):464-475. Abutilon indicum (Link) Sweet is an important medicinal plant that has been used in traditional medicine for centuries, and it is one ofthe novel crops being used in the pharmaceutical industry. Agricultural practices that produce high drug yield and desired secondary metabolites are in high demand by pharmaceutical-related industries; therefore, the aim of this study was to determine the leaf and seed yield, crude oil yield, crude oil composition, total phenolic content, and the antioxidant and antibacterial...
Tipo: Journal article
Palavras-chave: Biological activity; CAN; Crude oil; Fertilizer; NPK; Yield; Aceite crudo; Actividad biológica; CAN; Fertilizante; NPK; Rendimiento.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300012

Adubarroz: a brazilian experience for fertilization and liming recommendation of irrigated rice via computational system
Provedor de dados: 65
Autores: Carmona,Felipe de Campos; Anghinoni,Ibanor; Martins,Amanda Posselt; Boeni,Madalena.
ABSTRACT: Recommendations for fertilizing irrigated rice in southern Brazil have been constantly evolving over years. In this process, the influence of factors such as the development cycle of varieties and sowing period increased. Thus, computational tools that take these and others important aspects into account can potentiate the fertilization response of rice. This study describes the computer program "ADUBARROZ". The software provides recommendations of fertilizer rates and liming requirements of irrigated rice, based on information entered by the user. The system takes various factors that regulate the crop response to fertilization into account. A final report is established with the graphical representation of input management over time.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Software; Fertilizer; Oryza sativa; Lime; Crop yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101959

Productivity and quality of  Brachiaria brizantha B4 seeds in function of nitrogen doses
Provedor de dados: 65
Autores: Benteo,Gleiciane de Lima; Verzignassi,Jaqueline Rosemeire; Fernandes,Celso Dornelas; Valle,Cacilda Borges do; Macedo,Manuel Cláudio Motta; Libório,Cláudia Barrios de; Monteiro,Lenise Castilho.
ABSTRACT: This study aimed to evaluate aspects of reproductive phenology, yield components and seed quality of the B4 genotype of  Brachiaria brizantha in function of nitrogen doses applied at pre-flowering. The experiment was carried out at Embrapa Beef Cattle, in a randomized block design, with seeding density of 2.59kg SPV ha-1 in the first year, in free growth plants. Urea was applied at pre-flowering at doses of 0, 25, 50, 75, 100, 125 and 150kg ha-1. The reproductive cycle of the plant lasts 225 days, with late flowering. N doses influenced the following characteristics: number of fully expanded inflorescences, percentage of dry matter, dry biomass, number of spikelets per raceme, seed yield, weight of a thousand seeds, germination, germination speed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Tropical forage; Seed quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901566

Forage production and mineral composition of cactus intercropped with legumes and fertilized with different sources of manure
Provedor de dados: 65
Autores: Miranda,Karina Rodrigues de; Dubeux Junior,José Carlos Batista; Mello,Alexandre Carneiro Leão de; Silva,Maria da Conceição; Santos,Mércia Virginia Ferreira dos; Santos,Djalma Cordeiro dos.
ABSTRACT: The objective of this study was to evaluate the productive potential and mineral composition of the forage cactus IPA-Sertânia (Nopalea cochenillifera Salm Dyck). This species was analyzed both in monoculture and intercropped with leucaena [Leucaena leucocephala (Lam.) De Wit.] and gliricidia [Gliricidia sepium (Jacq. Steud.], and was assessed with different sources of manure (cattle, sheep, goat, and broiler litter) serving as fertilizer. The experiment was conducted at the Experimental Station of the Instituto Agronômico de Pernambuco in Caruaru, PE, Brazil. Treatments were allocated in a split-plot arrangement in a randomized complete block design, with four replications. Main plots consisted of cropping systems, while the split-plots were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Intercropping; Minerals; Nopalea; Production.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100654