Consulta: subjectFacets:"Limestone"
Registros recuperados: 32
Data/hora: 10/06/2024 04:41:25

Aplicacao de calcario no sulco de plantio.
Provedor de dados: 14
Autores: MIRANDA, L. N. de: MIRANDA, J. C. C. de.
bitstream/item/116694/1/rectec-06.pdf
Tipo: Recomendação Técnica (INFOTECA-E)
Palavras-chave: Aplicação; Sulco.; Calcário; Cerrado; Plantio; Solo.; Limestone; Planting.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546759

Calagem avaliada em plantio direto num latossolo do cerrado.
Provedor de dados: 14
Autores: SOUSA, D. M. G. de; LOBATO, E.
bitstream/CPAC-2009/24139/1/p2002_18.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: PVGSOL200; Correcao do solo; Zero tillage.; Calcário; Calagem; Cerrado; Plantio Direto.; Liming; Limestone; Soil amendments.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567445

Recomendações para correção da acidez do solo para cana-de-açúcar no Cerrado.
Provedor de dados: 14
Autores: SOUSA, D. M. G. de; REIN, T. A.; NUNES, R. de S.; SANTOS JUNIOR, J. de D. G. dos.
bitstream/item/161534/1/Comtec-177.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Correção da acidez do solo; Cana-de-açúcar; Agroenergia; Brasil; Savanna; Calagem; Cálcio; Magnésio; Calcário; Cerrado; Gesso; Saccharum Officinarum; Solo; Brazil; Bioenergy; Gypsum; Limestone; Liming; Soil; Sugarcane.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1026363

Método de referência para caracterização de rochas utilizadas como corretivos de acidez do solo.
Provedor de dados: 14
Autores: MARTINS, E. de S.; LINHARES, N. W.; GIUSTINA, C.
bitstream/CPAC-2009/20309/1/comtec_38.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Corretivo: Acidez do solo; Rock.; Calcário; Cerrado; Rocha; Solo.; Limestone; Soil; Soil pH.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/558088

Roteiro alternativo para escoamento do calcário de Pimenta Bueno: proposta para redução de custos.
Provedor de dados: 14
Autores: GODINHO, V. de P. C.; UTUMI, M. M.
Este trabalho, propõe roteiro alternativo para escoamento do calcário rondoniense, objetivando a redução do preço do frete, via aumento da oferta de frete de retorno do Corredor de Exportação Noroeste.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Production outflow; Disposal cost; Pimenta Bueno (RO); Rondônia; Amazônia Ocidental; Western Amazon; Calcário; Escoamento da Produção; Custo; Redução; Limestone.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/705147

Prioridades e metodologias de pesquisa em varzeas na area de fertilidade do solo.
Provedor de dados: 14
Autores: MIRANDA, L. N. de.
bitstream/item/101122/1/doc-33.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Metodologia; Micronutriente; Methods; Potash fertilizers; Phosphate fertilizers.; Adubação; Calcário; Calagem; Cerrado; Enxofre; Fertilidade do Solo; Fertilizante Nitrogenado; Fertilizante Potássico; Fertilizante Fosfatado; Pesquisa; Química do Solo.; Fertilizer application; Liming; Limestone; Nitrogen fertilizers; Research; Soil chemistry; Trace elements.; Soil fertility.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547926

Uso de gesso, calcário e adubos para pastagens no cerrado.
Provedor de dados: 14
Autores: SOUSA, D. M. G. de; VILELA, L.; LOBATO, E.; SOARES, W. V.
A pecuária no Cerrado baseou-se, por muitos anos, na exploração de pastagens nativas. Nas três últimas décadas, o crescimento acentuado do rebanho bovino na região e o incremento de até cinco vezes na capacidade de suporte das pastagens deveu-se ao aumento da área com grandes gramíneas forrageiras, provenientes do continente africano, especialmente as do gênero Brachiaria e o Andropogon gayanus cv. Planaltina. Estabelecidas sem adubação ou com o efeito residual de modestas adubações da cultura do arroz, sem adubação de manutenção e submetidas a manejo inadequado, extensas áreas dessas pastagens encontram-se em variados graus de degradação. A ausência de adubação de reposição durante décadas de extração dos nutrientes tornou necessária a recuperação dessas...
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Correção do solo; Soil fertilizers.; Adubo; Cerrado; Fertilidade do Solo; Gesso; Pastagem; Solo.; Gypsum; Limestone; Pastures; Soil amendments; Soil fertility.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/566086

Estimativa da acidez potencial pelo método do pH SMP, em solos do Mato Grosso do Sul.
Provedor de dados: 14
Autores: MAEDA, S.; KURIHARA, C. H.; HERNANI, L. C.; FABRICIO, A. C.; SILVA, W. M.
bitstream/item/65161/1/CPAO-DOCUMENTOS-3-ESTIMATIVA-DA-ACIDEZ-POTENCIAL-PELO-METODO-DO-PH-SMP-EM-SOLOS-DO-MATO-GROSSO-D2.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Analise de solo; Brasil; Mato Grosso do Sul; Soil testing; Methods.; Acidez do Solo; Calcário; Estimativa; Método.; Brazil; Limestone; Soil pH.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/241103

Viabilidade econômica da exploração de calcário em Pimenta Bueno.
Provedor de dados: 14
Autores: OLIVEIRA, J. N. S.; MEDEIROS, E. R.
Este trabalho tem por objetivo mostrar a importância da calagem para os solos do Estado de Rondônia, mesurando os benefícios financeiros que advirão a curto prazo. Portanto, todas as informações contidas neste estudo comprovam a viabilidade econômica do beneficiamento do calcário de Pimenta Bueno.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Viabilidade econômica; Pimenta Bueno (RO); Rondônia; Amazônia Ocidental; Western Amazon.; Manejo do Solo; Calagem; Adubação; Calcário.; Soil management; Limestone; Economic sustainability.; Liming.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/698076

Efeito da adubacao e calagem sobre o crescimento de carvoeiro.
Provedor de dados: 14
Autores: MELO, J. T. de.
bitstream/CPAC-2009/24657/1/bolpd_76.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Carvoeiro; Planta nativa; Fertilizacao; Indigenous organisms.; Calcário; Cerrado; Fósforo; Nitrogênio; Potássio; Sclerolobium Paniculatum.; Reflorestamento; Fertilizer application; Limestone; Phosphorus; Nitrogen; Potassium; Reforestation.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/559121

A new species of Begonia section Parvibegonia (Begoniaceae) from Thailand and Myanmar
Provedor de dados: 16
Autores: Phutthai, T.; Hughes, M.
Begonia tenasserimensis sp. nov. belongs to Begonia sect. Parvibegonia and is endemic to the hills of the Tenasserim Range, based on specimens from Peninsular Thailand and Tenasserim Division in Myanmar. The species is restricted to karst limestone and has been assessed as Vulnerable according to IUCN criteria.
Tipo: Article / Letter to the editor
Palavras-chave: Limestone; Southeast Asia; Taxonomy.
Ano: 2017
URL: http://www.repository.naturalis.nl/record/623770

Nepenthes section Insignes in Indonesia, with two new species
Provedor de dados: 16
Autores: Cheek, M.; Jebb, M.; Murphy, B.; Mambor, F.
A review of new data relating to Nepenthes insignis in Indonesia indicates that three taxa in section Insignes, not one, are present in New Guinea. One of these, endemic to the limestone of the island of Biak, is formally named as Nepenthes biak and assessed as Critically Endangered; the other, from limestone of the Raja Ampat islands is provisionally distinguished as Nepenthes sp. Raja Ampat, since only images are available.
Tipo: Article / Letter to the editor
Palavras-chave: Biak; Critically Endangered; Endemic; Limestone; Papua Barat; Raja Ampat.
Ano: 2018
URL: http://www.repository.naturalis.nl/record/642610

Derris solorioides (Fabaceae), a new limestone species with true-paniculate inflorescences from North-Central Thailand
Provedor de dados: 16
Autores: Sirichamorn, Y.; Adema, F.A.C.B.; Welzen, P.C. van.
Derris solorioides is described as a new species and illustrated. This species is only the second calciphilous and true-paniculate species of Derris ever recorded. The species was found in isolated and protected limestone areas surrounded by agricultural areas in Nakhon Sawan province, North-Central Thailand. It is characterized by its rather smaller flowers but with more ovules than other species of Derris, and 1-winged pods showing a dark-coloured pericarp around the seeds without thickening of the pericarp. The characters of the pods are similar to those found in Solori, a genus once synonymized with Derris and, therefore, the epithet ‘solorioides’ was assigned. This species appeared to be a distinct taxon in the molecular phylogeny, separate from its...
Tipo: Article / Letter to the editor
Palavras-chave: Derris; Limestone; Solori; Thailand; True panicle.
Ano: 2014
URL: http://www.repository.naturalis.nl/record/525723

Nota sobre la edad de las calizas coralinas del Pleistoceno marino en las Islas de San Andrés y Providencia (Mar Caribe Occidental, Colombia)
Provedor de dados: 20
Autores: Geister, J.
Los análisis de radiocarbón de tres muestras de corales, tomadas de la terraza terrestre de San Andrés y de su equivalente en Providencia, dieron por resultado edades entre 26.000 y 33.000 años. Estos valores deben considerarse como mínimos, en vista de un posible intercambio significativo de isótopos de carbón, bajo la influencia de la atmósfera, que no se puede excluir por completo.
Tipo: Journal Contribution
Palavras-chave: Limestone; Coral; Pleistocene; Limestone; Http://aims.fao.org/aos/agrovoc/c_4342.
Ano: 1972
URL: http://hdl.handle.net/1834/3329

Steel slag and phosphate nutrition of corn inoculated with arbuscular mycorrhizal fungi
Provedor de dados: 86
Autores: Nunes,Anita Bueno de Camargo; Saggin Júnior,Orivaldo José; Silva,Eliane Maria Ribeiro da; Pinto,Flávio Araújo; Santos,Jessé Valentim dos; Carneiro,Marco Aurélio Carbone.
Abstract: The objective of this work was to evaluate the effect of the use of steel slag as a soil acidity corrective and of mycorrhizal fungi associated with phosphate fertilization on corn plants. The study was performed in a greenhouse, using 3-kg pots with a Typic Haplorthox, in a 4x5x2 factorial arrangement, with four acidity correction treatments (C1, correction with dolomitic limestone at a dose of 4 Mg ha-1; C2, correction with steel slag at a dose of 4 Mg ha-1; C3, correction with a 1:1 mixture of 2 Mg ha-1 dolomitic limestone and 2 Mg ha-1 steel slag; and C4, control, without pH correction), five phosphorus doses (0, 42, 95, 213, and 480 mg dm-3), and the presence or absence of two arbuscular mycorrhizal fungi (Rhizophagus clarus and Gigaspora...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Acidity; Limestone; Root colonization; Symbiosis.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103300

Effect of the calcium level and limestone particle size on the performance of semi-heavy layers in the second cycle of egg production
Provedor de dados: 89
Autores: Pizzolante,CC; Garcia,EA; Laganá,C; Saldanha,ESPB; Deodato,AP; Faitarone,ABG; Scherer,MR; Batista,L.
An experiment was carried out at the Research and Development Unit of Brotas aiming at evaluating dietary calcium level and limestone particle size on the production performance of commercial (Hy-Line Brown) layers in the second lay cycle. Experiment duration was 112 days. A total number of 288 hens, with 83 weeks of age in the beginning of the experiment, were used in a completely randomized experimental design in a factorial arrangement of 2x3, with two calcium levels (3.5 and 4.0%) and three limestone particle size compositions: 100% fine limestone (FL), 30% coarse limestone (CL) + 70% fine limestone (FL), and 50% (CL) + 50% (FL), with six replicates of eight birds each. Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium; Laying hens; Limestone; Particle size; Performance.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000300006

Calcium levels and limestone particle size in the diet of commercial layers at the end of the first production cycle
Provedor de dados: 89
Autores: Pelicia,K; Garcia,E; Móri,C; Faitarone,ABG; Silva,AP; Molino,AB; Vercese,F; Berto,DA.
This study evaluated the effect of dietary calcium levels and limestone particle size distribution on first-cycle layer performance and egg quality. A completely randomized experimental design in 4x3 factorial arrangement (four Ca levels - 3.0, 3.5, 4.0, 4.5%; and three limestone particle size distributions - 100% fine, 50% fine and 50% coarse, 30% fine and 70% coarse) was applied, totaling 12 treatments with six replicates of eight birds each. The treatments did not influence the most of evaluated performance and internal and external egg quality parameters. However, limestone particle size distribution quadratically affected with percentage of defective eggs, with the lowest percentage obtained with the distribution 61.75% fine limestone and 38.25%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg production; Limestone; Marketable eggs; Nutrition; Poultry.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200003

The effects of alternative forced-molting methods on the performance and egg quality of commercial layers
Provedor de dados: 89
Autores: Molino,AB; Garcia,EA; Berto,DA; Pelícia,K; Silva,AP; Vercese,F.
This study aimed at studying alternative methods to induce molting and to compare them with the conventional forced-molting method (fasting). In the experiment, 420 70-week-old layers were used. The total experimental period was 140 days. Molting was induced during the first 28 days, when birds were submitted to the experimental treatments, and bird performance and egg quality parameters were determined during 112 subsequent days. A completely randomized experimental design was applied in a 5x2 factorial arrangement of five feed restriction regimes (0, 15, 30, 45, or 60g feed/bird/day) and with or without the addition of coarse-particle limestone to the feed, with seven replicates of six birds each. Egg quality was evaluated at the end of each 28-day...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell thickness; Feed restriction; Limestone; Welfare.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200006

Influence of liming on residual soil respiration and chemical properties in a tropical no-tillage system
Provedor de dados: 90
Autores: Marcelo,Adolfo Valente; Corá,José Eduardo; Scala Junior,Newton La.
Because of the climate changes occurring across the planet, especially global warming, the different forms of agricultural soil use have attracted researchers´ attention. Changes in soil management may influence soil respiration and, consequently, C sequestration. The objectives of this study were to evaluate the long-term influence of liming on soil respiration and correlate it with soil chemical properties after two years of liming in a no-tillage system. A randomized complete block design was used with six replications. The experimental treatments consisted of four lime rates and a control treatment without lime. Two years after liming, soil CO2 emission was measured and the soil sampled (layers 0-5, 5-10, 10-20, and 20-30 cm). The P, Ca2+ e Mg2+ soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil CO2 emission; Limestone; Soil fertility.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100005

Surface Application of Lime on a Guava Orchard in Production
Provedor de dados: 90
Autores: Corrêa,Márcio Cleber de Medeiros; Natale,William; Prado,Renato de Mello; Banzatto,David Ariovaldo; Queiroz,Ronialison Fernandes; Silva,Marcos Antonio Camacho da.
ABSTRACT Several complications can arise, either directly or indirectly, from implementation of measures to correct soil acidity in established fruit orchards, such as impaired roots, lower root volume, risk of plant infection, propagation of diseases, promotion of pest development (especially nematodes), and soil disaggregation and compaction. These factors can have a negative effect on crop yield. Therefore, it becomes critical to implement an effective method of neutralizing soil acidity, especially at the level of the tree roots. To assess the effect that the rates and forms of limestone applied on the soil surface have on soil fertility and on nutrition and yield of guava, an experiment was conducted in a commercial orchard. A randomized block...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil acidity; Limestone; Perennial crop; Fruticulture; Psidium guajava.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100522

Peach palm growth and heart-of-palm yield responses to liming
Provedor de dados: 90
Autores: Bovi,M. L. A.; Spiering,S. H.; Saes,L. A.
The effects of liming rates on growth and heart-of-palm yield of peach palm plants (Bactris gasipaes Kunth) were studied in a two-year field experiment conducted in Pariquera-Açu, State of Sao Paulo, Brazil. Soils in this region are allic (sub group Ultic Haplorthox), with base saturation ranging from 15 to 26 % of the cation exchange capacity (CEC). A randomized complete block design, with five rates of dolomitic limestone (0, 0.7, 4.7, 8.7, and 14.6 Mg ha-1) and five replications was utilized. Individual plots were composed of 80 plants but only the inner rows (24 plants) were used for data recording. Planting spacing was 2 x 1 m. There was a cubic effect of liming rates on growth and yield. Maximum heart-of-palm yield was estimated to be achieved at 4.3...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bactris gasipaes; Biomass; Limestone; Pejibaye.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832004000600009

Crambe dry matter and yield under doses of phosphorus and base saturation in the Cerrado of Goiás
Provedor de dados: 91
Autores: Alves,José M.; Leandro,Wilson M.; Alves,Cassia C. F.; Carlos,Leandro; Ribon,Adriana A.; Fernandes,Kathleen L.
ABSTRACT Crambe has been studied as an option in crop rotation systems in order to provide raw material for biodiesel production. This study aimed to evaluate the effect of raising soil base saturation and addition of phosphorus (P) on the vegetative development, grain yield and oil content of crambe. The experiment was carried out in a Oxisol, arranged in factorial scheme (4 x 3), with 4 replicates (48 plots), in completely randomized blocks. Four base saturation levels (34 - natural of the soil, 40, 50 and 60%) and three P doses (0, 40 and 80 kg ha-1 of P2O5) were evaluated. The experimental plots formed a 9 m2 rectangle with 5 plant rows, spaced by 0.45 m, using the cultivar "Brilliant FMS". The evaluated variables were: dry matter of roots and shoots...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crambe abyssinica H.; Biodiesel; Limestone; Phosphate fertilization.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500421

MANAGEMENT OF ROOT ROT IN AVOCADO TREES
Provedor de dados: 94
Autores: SILVA,SIMONE RODRIGUES DA; CANTUARIAS-AVILÉS,TATIANA; BREMER NETO,HORST; MOURÃO FILHO,FRANCISCO DE ASSIS ALVES; MEDINA,RICARDO BORDIGNON.
ABSTRACT  Root rot (Phytophthora cinnamomi Rands) is one of the most restrictive factors to avocado growing in main producing regions worldwide. In Brazil, scientific reports on the effectiveness of control methods are scarce. The objective of this study was to evaluate the efficiency of gypsum applications and dolomitic limestone to the soil and potassium phosphite sprays in controlling this disease in ‘Hass’ avocado, grown without irrigation. The application of dolomitic limestone or gypsum alone is not effective to recover plants affected by root rot. The application of potassium phosphite, combined or not with dolomitic lime or gypsum enables the partial recovery ‘Hass’ avocado plants affected by the disease.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Phytophthora cinnamomi; Limestone; Gypsum; Potassium phosphite; Sanitary visual condition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400404

Effect of silicate fertilization on soil and on palisade grass plants under grazing intensities
Provedor de dados: 96
Autores: Luz,Pedro Henrique de Cerqueira; Faria,Letícia de Abreu; Macedo,Felipe Barros de; Herling,Valdo Rodrigues; Sanches,Antonio Batista; Rodrigues,Rosane Cláudia.
Application of calcium silicate (SiCa) as soil acidity corrective was evaluated in a Rhodic Hapludox soil with palisade grass conducted under pasture rotation system with different grazing intensities. Experimental design was complete randomized blocks with four grazing intensities - grazing intensities were imposed by forage supply (50, 100, 150 and 200 kg t-1 of DM per LW) - in experimental plots with four replicates and, in the subplots, with seven doses of calcium silicate combined with lime: 0+0, 2+0, 4+0, 6+0, 2+4, 4+2 and 0+6 t ha-1, respectively. In the soil, it was evaluated the effect of four levels of calcium silicate (0, 2, 4 and 6 t ha-1) at 45, 90, and 365 days at three depths (0-10, 10-20 and 20-40 cm) and at 365 days, it was included one...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Calcium silicate; Forage; Limestone; Silicon.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700009

Soil genesis and iron nodules in a karst environment of the Apodi Plateau
Provedor de dados: 124
Autores: Girão,Rodrigo de Oliveira; Moreira,Leo Jakson da Silva; Girão,Ana Leônia de Araújo; Romero,Ricardo Espíndola; Ferreira,Tiago Osório.
The Apodi Plateau, located in the northeastern part of the state of Ceará in Brazil, has limestone as its parent material, with significant variation in the soils formed in this region, as well as the presence of iron nodules, having been identified. The iron oxides have been used as indicators for evaluating the weathering processes of some soils, with the nodules being sources of information about pedogenic processes. Seeking to evaluate the influence of the karstic parent material and of the iron nodules on soil genesis in the Apodi Plateau, the morphological, physical and chemical properties of five profiles were evaluated, as well as of the iron nodules present in some horizons. The profiles were classified as RED-YELLOW ARGISOL Abruptic eutrophic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pedogenic processes; Limestone; Soil classification.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000400006

Alternative liming blends for fish culture
Provedor de dados: 2
Autores: Nobre, Mikaely Karine Barbosa; Universidade Federal do Ceará; Lima, Francisco Roberto dos Santos; Universidade Federal do Ceará; Magalhães, Frederico Batista; Universidade Federal do Ceará; Sá, Marcelo Vinícius do Carmo e; Universidade Federal do Ceará.
Calcium carbonate (limestone) is a safe but slow-acting product for aquaculture liming. Calcium oxide (lime) is a fast-acting but dangerous product. It would be interesting to have simultaneously a safe and fast-acting liming product. The present work aimed to evaluate two alternative liming blends for tilapia culture. The culture water was initially acidified with HCl. Next, the same quantity of CaCO3 (control), Na2CO3+CaSO4 or Na2CO3+CaCl2 was applied to the culture water. There were also non-limed tanks. One hundred and twenty Nile tilapia juveniles (1.6 ± 0.1 g) were stocked in twenty 250-L culture tanks for 10 weeks. All products used were similarly efficient in increasing the alkalinity of water. The probable better environment for algal growth in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Limestone; Lime; Tilapia; Alkalinity; Aquaculture.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21282

Response of a fourth ratoon sugarcane crop to nitrogen, silicon, and lime fertilization
Provedor de dados: 115
Autores: Silva,Gilmara Pereira da; Prado,Renato de Mello; Almeida,Thiago Batista Firmato; Nóia,N. Regina de Campos.
Maximum efficiency of nitrogen (N) is attained when fertilizer is accompanied by silicon (Si). Therefore, the objective of this study was to evaluate the chemical attributes of the soil, the nutritional status, the yield of stalks, and the accumulation of N and Si by a fourth ratoon sugarcane (Saccharum sp.) crop, and the influence of N doses in the presence and absence of Si and lime. The study was carried out at the experimental farm of the UNESP Jaboticabal campus, state of São Paulo, Brazil. The experimental design was in a completely randomized block with a 5x2 factorial scheme: five doses of N (0, 40, 80, 120, and 160 kg ha-1), and two corrective materials, silicate and lime; with four replications per treatment. The soil was characterized as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Nitrogen fertilization; Silicate; Limestone; Stalk production.
Ano: 2015
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000500005

Characterization of granite and limestone powders for use as fillers in bituminous mastics dosage
Provedor de dados: 42
Autores: BARRA,BRENO; MOMM,LETO; GUERRERO,YADER; BERNUCCI,LIEDI.
This paper discusses the importance of studies on materials known as fillers from different mineral origins, used in asphalt mixes, specifically in the formulation of mastics. The research was carried out on samples of limestone and granite rock filler and asphalt binder (50/70). The samples were evaluated through semiquantitative chemical analyses by X-ray fluorescence, granulometry by low angle laser emission, scanning electron microscopy, softening point tests, penetration tests, and aggregate-asphalt binder and aggregate-mastic adhesion tests. The results highlighted convergent trends, indicating that the active behavior of the fillers in the mastic formulation is not related to the size of the particles, but rather to their form, surface texture,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Characterization; Fillers; Granite; Limestone; Bituminous mastics.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200995

Characterization of the solid residue generated in the detoxification step of sugarcane bagasse hemicellulosic hydrolysate and behavior in agricultural soils
Provedor de dados: 53
Autores: Godoi,Isamara; Felipe,Maria das Graças de Almeida; Silva,Débora Danielle Virgínio; Leonel,Lilian Vieira; Costa,Mônica Sarolli Silva de Mendonça; Sene,Luciane.
ABSTRACT Overliming is an effective way of neutralizing and reducing the toxicity of the hydrolysates generated from acidic pretreatment of lignocellulosic biomass for ethanol production and others biotechnological products. Overliming generates a solid residue whose inadequate disposal may represent an environmental problem. This work aimed at the chemical characterization of the solid residue generated during the detoxification of the sugarcane bagasse hemicellulosic hydrolysate and evaluation of its behavior in soil. The solid residue was submitted to physicochemical and granulometric analysis and determination of the contents of sugars, metals and toxic compounds (acetic acid, furfural, hydroxymethylfurfural and phenols). The potential of the residue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Overliming; Limestone; Soil acidity; Soil quality; Toxicity.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052020000100107

Characterization of foams obtained from cassava starch, cellulose fibres and dolomitic limestone by a thermopressing process
Provedor de dados: 52
Autores: Schmidt,Vivian Consuelo Reolon; Laurindo,João Borges.
Cassava starch, dolomitic limestone and eucalypt cellulose fibres were used to prepare foam trays that could be used to pack foodstuffs. The influence of the cellulose fibre concentration in the composite formulation was investigated using 5, 10, 15, 20, 30 and 40% of fibres. The results indicated that an increase in cellulose fibre concentration promoted a decrease in density and tensile strength of the foam samples. The tensile strength at break for foam trays containing 5% of cellulose fibres was 3.03MPa, whilst the commercial trays of expanded polystyrene used to pack foods in supermarkets presented a tensile strength of 1.49 MPa. The elongation at break of the foam trays obtained in this work varied slightly with increase in cellulose fibre...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodegradable trays; Cassava starch; Eucalypt cellulose fibres; Limestone; Guar gum; Thermoprocessing.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100023

Liming as a means of reducing copper toxicity in black oats
Provedor de dados: 65
Autores: Comin,Jucinei José; Ambrosini,Vítor Gabriel; Rosa,Daniel José; Basso,Alex; Loss,Arcângelo; Melo,George Wellington Bastos de; Lovato,Paulo Emílio; Lourenzi,Cledimar Rogério; Ricachenevsky,Felipe Klein; Brunetto,Gustavo.
ABSTRACT:  Soils which are cultivated with grapevines have high available copper (Cu) content, which can be toxic to cover crops cohabiting vineyards, such as black oats. This study aimed to assess the effect of liming in reducing Cu toxicity in black oats grown in sandy soils. Samples of a Typic Hapludalf were collected at 0-20cm, dried and subjected to the addition of Cu (0 to 50Mg kg-1) and limestone (0, 1.5, and 3.0Mg ha-1). The soil was placed in a rhizobox and black oats were grown for 30 days. We assessed root and shoot dry matter production, copper (Cu), calcium (Ca) and magnesium (Mg) contents in the tissues; Cu content in the root symplast and apoplast, as well as Cu, carbon and pH values in the rhizosphere and bulk soil. Liming reduced Cu...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heavy metal; Phytotoxicity; Limestone; Rhizosphere.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400252

Use of buffer methods to estimate the potential acidity of Mato Grosso soils
Provedor de dados: 64
Autores: Prado,Marcelo Ribeiro Vilela; Moraes,Milton Ferreira de; Ramos,Fabrício Tomaz; Santos,Carlos Leandro Rodrigues do; Campos,David Vilas Boas de; Barros,Gisele Teixeira.
ABSTRACT Mato Grosso, with a total area of 903357 km², does not have an official methodology for estimating soil potential acidity (H + Al), and determination of H + Al using the standard method is onerous and time consuming. The objective of this study was to compare estimated values of H + Al determined using the standard calcium acetate method with those obtained using three buffer methods, namely, the Shoemaker, McLean, and Pratt (SMP) buffer, Sikora buffer, and Santa Maria buffer (SMB) methods, with samples of the main classes of cultivated soils in the state of Mato Grosso. A total of 196 soil samples were collected from the arable layer (0-20 cm) in agropastoral and adjacent native systems. Statistical models were obtained and compared with models...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Limestone; SMP buffer; Sikora buffer; Santa Maria buffer.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100207