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Agronomic and Economic Efficiency of Common-Bean Inoculation with Rhizobia and Mineral Nitrogen Fertilization Rev. Bras. Ciênc. Solo
Soares,Bruno Lima; Ferreira,Paulo Ademar Avelar; Rufini,Márcia; Martins,Fábio Aurélio Dias; Oliveira,Dâmiany Pádua; Reis,Ricardo Pereira; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza.
ABSTRACT Management of biological nitrogen fixation in common bean still requires improvement. The objective of this study was to verify the compatibility of nitrogen fertilization with biological N2 fixation to increase common bean yield and profitability. Four field experiments were performed in four municipalities of Minas Gerais, Brazil, during the 2009 and 2010 winter crop season. The 2009 crop experiments were set up under a no-till system and the 2010 crop was conducted using conventional tillage. A randomized block experimental design was used with four replications and seven treatments combining application rates of mineral N (at sowing and/or topdressing) and seed inoculation with Rhizobium tropici strain CIAT899. Inoculation with 20 kg ha-1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Nitrogen fixation; No-till; Conventional tillage.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100416
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Aluminum species and activity in sandy soil solution with pig slurry addition PAB
Conti,Lessandro De; Ceretta,Carlos Alberto; Couto,Rafael da Rosa; Ferreira,Paulo Ademar Avelar; Silva,Lincon Oliveira Stefanello da; Piccin,Rogério; Lourenzi,Cledimar Rogério; Girotto,Eduardo; Brunetto,Gustavo.
Abstract: The objective of this work was to evaluate the effect of pig slurry applications on the exchangeable Al content, activity, and distribution of Al chemical species in the soil solution. Soil samples of a Typic Hapludalf were obtained from an experiment conducted during eight years, with 19 applications of 0, 20, 40, and 80 m3 ha-1 pig slurry. The soil samples were collected in stratified layers to determine exchangeable Al content and to extract the soil solution by the saturated soil paste method. The concentrations of the main cations and anions, dissolved organic carbon, and pH in the soil solution were determined. The distribution of the chemical species of Al and the activity of the Al3+ species were obtained through the Visual Minteq...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Inorganic ligand; Organic amendment; Phytotoxicity; Soil solution.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001000914
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Application of nitrogen sources on grapevines and effect on yield and must composition Rev. Bras. Frutic.
Brunetto,Gustavo; Ceretta,Carlos Alberto; Melo,George Wellington Bastos de; Girotto,Eduardo; Ferreira,Paulo Ademar Avelar.
This study was carried out to evaluate the yield, total N content in leaves and must composition of grapes from the Cabernet Sauvignon variety subjected to the application of urea and organic compost. Cabernet Sauvignon grapevines in Rosário do Sul, RS, Brazil, in 2008, 2009 and 2010 were subjected to annual application of 40 kg N ha-1 in the form of organic compost and urea, and compared to unfertilized grapevines. In the 2008/09, 2009/10 and 2010/11 crop seasons, leaves were collected for analysis of total N content. At maturation of the grapes, the yield and quality attributes of the must were evaluated. The application of N sources, especially organic compost, increased the N content in the whole leaf at full flowering. Application of organic compost...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Urea; Organic compost; Leaf analysis; Must quality; Vitis vinifera.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000400015
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Atributos químicos de Latossolo após sucessivas aplicações de composto orgânico de dejeto líquido de suínos PAB
Lourenzi,Cledimar Rogério; Scherer,Eloi Erhard; Ceretta,Carlos Alberto; Tiecher,Tadeu Luis; Cancian,Adriana; Ferreira,Paulo Ademar Avelar; Brunetto,Gustavo.
Resumo: O objetivo deste trabalho foi determinar as alterações em atributos químicos de um Latossolo Vermelho após aplicações sucessivas de composto orgânico de dejeto líquido de suínos com maravalha, em sistema plantio direto. O experimento foi conduzido em Chapecó, SC, em Latossolo Vermelho, de setembro de 2005 a agosto de 2011. Foram aplicadas anualmente as doses de 0, 2, 4, 8 e 16 Mg ha-1 de composto de dejeto líquido de suínos com maravalha, além de um tratamento com adubação mineral (NPK). Após seis aplicações, coletaram-se amostras de solo nas camadas de 0-4, 4-8, 8-12, 12-16, 16-20, 20-40 e 40-60 cm e avaliaram-se os atributos químicos. As maiores doses do composto orgânico incrementaram o pH do solo e reduziram a acidez potencial. As aplicações de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acidez do solo; Acúmulo de nutrientes; Fertilizante orgânico; Resíduos orgânicos.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000300233
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Available content, surface runoff and leaching of phosphorus forms in a typic hapludalf treated with organic and mineral nutrient sources Rev. Bras. Ciênc. Solo
Lourenzi,Cledimar Rogério; Ceretta,Carlos Alberto; Cerini,Jackson Berticelli; Ferreira,Paulo Ademar Avelar; Lorensini,Felipe; Girotto,Eduardo; Tiecher,Tadeu Luis; Schapanski,Dênis Eduardo; Brunetto,Gustavo.
The application of animal manure to soil can increase phosphorus availability to plants and enhance transfer of the nutrient solution drained from the soil surface or leached into the soil profile. The aim of this study was to evaluate the effect of successive applications of organic and mineral nutrient sources on the available content, surface runoff and leaching of P forms in a Typic Hapludalf in no-tillage systems. Experiment 1 was set up in 2004 in the experimental area of UFSM, in Santa Maria (RS, Brazil). The treatments consisted of: control (without nutrient application) and application of pig slurry (PS), pig deep-litter (PL), cattle slurry (CS), and mineral fertilizers (NPK). The rates were determined to meet the N crop requirements of no-tillage...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic waste; Nutrient release; Environmental contamination; No-tillage system.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000200019
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Biomass decomposition and nutrient release from black oat and hairy vetch residues deposited in a vineyard Rev. Bras. Ciênc. Solo
Ferreira,Paulo Ademar Avelar; Girotto,Eduardo; Trentin,Gustavo; Miotto,Alcione; Melo,George Wellington de; Ceretta,Carlos Alberto; Kaminski,João; Frari,Bianca Knebel Del; Marchezan,Carina; Silva,Lincon Oliveira Stefanello; Faversani,Jéssica Carolina; Brunetto,Gustavo.
A significant quantity of nutrients in vineyards may return to the soil each year through decomposition of residues from cover plants. This study aimed to evaluate biomass decomposition and nutrient release from residues of black oats and hairy vetch deposited in the vines rows, with and without plastic shelter, and in the between-row areas throughout the vegetative and productive cycle of the plants. The study was conducted in a commercial vineyard in Bento Gonçalves, RS, Brazil, from October 2008 to February 2009. Black oat (Avena strigosa) and hairy vetch (Vicia villosa) residues were collected, subjected to chemical (C, N, P, K, Ca, and Mg) and biochemical (cellulose - Cel, hemicellulose - Hem, and lignin - Lig content) analyses, and placed in litter...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cover crops; Nutrient cycling; Plastic shelter; Vitis sp.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500027
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Crop response to organic fertilization with supplementary mineral nitrogen Rev. Bras. Ciênc. Solo
Ciancio,Nathalia Riveros; Ceretta,Carlos Alberto; Lourenzi,Cledimar Rogério; Ferreira,Paulo Ademar Avelar; Trentin,Gustavo; Lorensini,Felipe; Tiecher,Tadeu Luis; De Conti,Lessandro; Girotto,Eduardo; Brunetto,Gustavo.
Animal manure is applied to the soil as a nutrient source, especially of nitrogen, to plants. However, manure application rates can be reduced with the use of N fertilizer in topdressing. The aim of this study was to evaluate crop responses to different application rates of animal manure sources, used alone and supplemented with mineral N topdressing, in a no-tillage system. The study was carried out from 2005 to 2008 on a Hapludalf soil. The treatments consisted of rates of 10, 20 and 30 m³ ha-1 of pig slurry (PS), and of 1 and 2 t ha-1 of turkey manure (TM), applied alone and supplemented with topdressed N fertilizer (TNF), as well as two controls, mineral fertilization (NPK) and one control without fertilizer application. Grain yield in common bean and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal manure; Crop rotation; No-tillage cropping system.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000300023
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Cupriavidus necator strains: zinc and cadmium tolerance and bioaccumulation Scientia Agricola
Ferreira,Paulo Ademar Avelar; Bomfeti,Cleide Aparecida; Soares,Cláudio Roberto Fonsêca de Souza; Soares,Bruno Lima; Moreira,Fatima Maria de Souza.
ABSTRACT: Among soil microorganisms, the genus Cupriavidus has garnered particular scientific, economic and ecological interest because of its ability to fix nitrogen and tolerate high concentrations of metals. The aim of this study was to analyze four strains of Cupriavidus necator for their ability to tolerate and bioaccumulate cadmium and zinc. The tolerance of these strains to these metals was assessed in liquid culture medium containing different concentrations of Zn + Cd and in soil solutions and soils contaminated with multiple elements including Zn, Cd, Cu and Pb. The four strains showed high tolerance to Zn and Cd, both in culture medium and when inoculated into contaminated soil solutions or multi-element contaminated soil. The UFLA02-71 strain...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Β-proteobacteria; Bioremediation; Heavy-metal; Soil pollution.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600452
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Differential behavior of the summer cover crops in the absorption and translocation of copper Ciência Rural
Vendruscolo,Diogo; Santana,Natielo Almeida; Souto,Kelen Müller; Ferreira,Paulo Ademar Avelar; Melo,George Wellington Bastos de; Jacques,Rodrigo Josemar Seminoti.
ABSTRACT: Phytoremediation is an alternative technique used to treat copper-contaminated soils. The objective of this research was to explore the behavior of nine summer cover crops regarding the growth, absorption and translocation of copper in soils with contamination levels exceeding the Value of Prevention, with a view to selecting plants for phytoremediation programs. In the experiments the Cambisol was contaminated with copper, added in doses of 0, 100, 200, 400, 500 and 600mg kg-1, in which the following nine plants were cultivated under greenhouse conditions: Canavalia ensiformis, Cajanus cajan, Dolichos lablad, Mucuna cinereum, Mucuna aterrima, Crotalaria juncea, Crotalaria spectabilis, Pennisetum glaucum and Paspalum notatum. At 90 days after...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metal; Soil pollution; Phytoremediation; Phytostabilization; Phytoextraction.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001200251
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Effect of arbuscular mycorrhizal fungi on young vines in copper-contaminated soil BJM
Ambrosini,Vítor Gabriel; Voges,Joana Gerent; Canton,Ludiana; Couto,Rafael da Rosa; Ferreira,Paulo Ademar Avelar; Comin,Jucinei José; Melo,George Wellington Bastos de; Brunetto,Gustavo; Soares,Cláudio Roberto Fonsêca Sousa.
Abstract High copper (Cu) levels in uprooted old vineyard soils may cause toxicity in transplanted young vines, although such toxicity may be reduced by inoculating plants with arbuscular mycorrhizal fungi (AMF). The objective of this study was to evaluate the effects of AMF on the plant growth, chlorophyll contents, mycorrhizal colonization, and Cu and phosphorus (P) absorption in young vines cultivated in a vineyard soil contaminated by Cu. Commercial vineyard soil with high Cu levels was placed in plastic tubes and transplanted with young vines, which were inoculated with six AMF species (Dentiscutata heterogama, Gigaspora gigantea, Acaulospora morrowiae, A. colombiana, Rhizophagus clarus, R. irregularis) and a control treatment on randomized blocks...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mycorrhizae; Trace elements; Phosphorus; Vitis sp.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401045
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Effects of Pig Slurry Application and Crops on Phosphorus Content in Soil and the Chemical Species in Solution Rev. Bras. Ciênc. Solo
De Conti,Lessandro; Ceretta,Carlos Alberto; Ferreira,Paulo Ademar Avelar; Lorensini,Felipe; Lourenzi,Cledimar Rogério; Vidal,Renan Fagan; Tassinari,Adriele; Brunetto,Gustavo.
The application of pig slurry rates and plant cultivation can modify the soil phosphorus (P) content and distribution of chemical species in solution. The purpose of this study was to evaluate the total P, available P and P in solution, and the distribution of chemical P species in solution, in a soil under longstanding pig slurry applications and crop cultivation. The study was carried out in soil columns with undisturbed structure, collected in an experiment conducted for eight years in the experimental unit of the Universidade Federal de Santa Maria (UFSM), Santa Maria (RS). The soil was an Argissolo Vermelho distrófico arênico (Typic Hapludalf), subjected to applications of 0, 20, 40, and 80 m3 ha-1 pig slurry. Soil samples were collected from the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic wastes; Soil solution; Chemical speciation; Visual Minteq.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000300774
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Eficiência agronômica de rizóbios selecionados e diversidade de populações nativas nodulíferas em perdões (MG): I - caupi Rev. Bras. Ciênc. Solo
Soares,André Luis de Lima; Pereira,João Paulo Andrade Resende; Ferreira,Paulo Ademar Avelar; Vale,Helson Mário Martins do; Lima,Adriana Silva; Andrade,Messias José Bastos de; Moreira,Fátima Maria de Souza.
O caupi (Vigna unguiculata L.) é de grande importância nutricional, social, econômica e estratégica, principalmente para as regiões Norte e Nordeste, e vem ultrapassando as barreiras regionais, com amplas perspectivas no agronegócio brasileiro. A interação do caupi com bactérias fixadoras de N atmosférico pode aumentar a produtividade e diminuir os custos de produção. No presente trabalho, avaliou-se no campo a eficiência agronômica de estirpes previamente selecionadas de rizóbio em simbiose com o caupi, comparadas à estirpe recomendada até 2004, para a produção de inoculantes comerciais (BR 2001). Posteriormente, a diversidade fenotípica das populações nativas foi avaliada pela análise das características culturais e pela análise de proteína total por...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Bradyrhizobium; Fixação biológica de N2; Produtividade.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832006000500005
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Eficiência agronômica de rizóbios selecionados e diversidade de populações nativas nodulíferas em Perdões (MG): II - feijoeiro Rev. Bras. Ciênc. Solo
Soares,André Luis de Lima; Ferreira,Paulo Ademar Avelar; Pereira,João Paulo Andrade Resende; Vale,Helson Mário Martins do; Lima,Adriana Silva; Andrade,Messias José Bastos de; Moreira,Fátima Maria de Souza.
O feijão (Phaseolus vulgaris L.) é um dos principais constituintes da dieta do brasileiro, por ser excelente fonte protéica e, portanto, um produto agrícola de grande importância econômico-social. A interação do feijoeiro com bactérias fixadoras de N atmosférico pode aumentar a produtividade e diminuir os custos de produção. No presente trabalho, avaliou-se, no campo, a eficiência agronômica de estirpes previamente selecionadas de rizóbio em simbiose com o feijoeiro, comparadas à estirpe recomendada para a produção de inoculantes comerciais (CIAT 899). A diversidade fenotípica da população nativa foi avaliada pela análise das características culturais e pela análise de proteína total por eletroforese em gel poliacrilamida (SDS-PAGE). Verificou-se que a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phaseolus vulgaris; Rizóbio; Fixação biológica de N2; Produtividade.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832006000500006
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Eficiência simbiótica de estirpes de Cupriavidus necator tolerantes a zinco, cádmio, cobre e chumbo PAB
Ferreira,Paulo Ademar Avelar; Bomfeti,Cleide Aparecida; Silva Júnior,Romildo da; Soares,Bruno Lima; Soares,Cláudio Roberto Fonseca Sousa; Moreira,Fatima Maria de Souza.
O objetivo deste trabalho foi avaliar a tolerância de estirpes de Cupriavidus necator a zinco, cádmio, cobre e chumbo, além de determinar a eficiência simbiótica das estirpes mais tolerantes em associação a espécies leguminosas com potencial para revegetação. A tolerância foi testada em meio LB, suplementado com 2,5; 5,0; 7,5; 10; 12,5 e 15 mmol L-1 de ZnSO4.7H2O, CdSO4.8H2O, CuSO4.5H2O e PbCl2, respectivamente, em comparação ao controle sem adição de metal. Determinou-se a eficiência simbiótica das quatro estirpes de C. necator mais tolerantes aos metais avaliados (UFLA02-71, UFLA02-73, UFLA01-659 e UFLA01-663), as quais foram inoculadas nas espécies: Leucaena leucocephala, Enterolobium contortisiliquum, Acacia mangium, Mimosa caesalpiniifolia, M. pudica,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Áreas degradadas; Β-proteobactéria; Fixação biológica de nitrogênio; Metais pesados; Revegetação.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000100012
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Forms and accumulation of copper and zinc in a sandy typic hapludalf soil after long-term application of pig slurry and deep litter Rev. Bras. Ciênc. Solo
Tiecher,Tadeu Luis; Ceretta,Carlos Alberto; Comin,Jucinei José; Girotto,Eduardo; Miotto,Alcione; Moraes,Marcel Pires de; Benedet,Lucas; Ferreira,Paulo Ademar Avelar; Lorenzi,Cledimar Rogério; Couto,Rafael da Rosa; Brunetto,Gustavo.
Successive applications of pig slurry and pig deep litter may lead to an accumulation of copper (Cu) and zinc (Zn) fractions in the soil profile. The objective of this study was to evaluate the Cu and Zn forms and accumulation in a Sandy Typic Hapludalf soil after long-term application of pig slurry and deep litter. In March 2010, eight years after initiating an experiment in Braço do Norte, Santa Catarina (SC), Brazil, on a Sandy Typic Hapludalf soil, soil samples were collected from the 0-2.5, 2.5-5.0, 5-10 and 10-15 cm layers in treatments consisting of no manure application (control) and with applications of pig slurry and deep litter at two levels: the single and double rate of N requirement for maize and black oat succession. The soil was dried,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Manure; Trace elements; Chemical fractionation; Environmental contamination.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300028
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Grape yield, and must compounds of 'Cabernet Sauvignon' grapevine in sandy soil with potassium contents increasing Ciência Rural
Ciotta,Marlise Nara; Ceretta,Carlos Alberto; Silva,Lincon Oliveira Stefanello da; Ferreira,Paulo Ademar Avelar; Sautter,Claudia Kaehler; Couto,Rafael da Rosa; Brunetto,Gustavo.
ABSTRACT: Content of exchangeable potassium (K) in t soil may influence on its content in grapevines leaves, grape yield, as well as, in must composition. The study aimed to assess the interference of exchangeable K content in the soil on its leaf content, production and must composition of 'Cabernet Sauvignon' cultivar. In September 2011, in Santana do Livramento (RS) five vineyards with increasing levels of exchangeable K in the soil were selected. In the 2012/13 and 2013/14 harvests, the grape yield, yield components, total K content in the leaves in full bloom and berries veraison were evaluated. Values of total soluble sugar (TSS), pH, total titratable acidity (TTA), total polyphenols and anthocyanins were evaluated in the must. Exchangeable K content...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Foliar analysis; Grape production; Quality of the grape; Vitis vinifera..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801376
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Inoculação com cepas de rizóbio na cultura do feijoeiro Ciência Rural
Ferreira,Paulo Ademar Avelar; Silva,Michele Aparecida Pereira; Cassetari,Alice; Ruffini,Márcia; Moreira,Fátima Maria de Souza; Andrade,Messias José Basto.
O presente trabalho objetivou avaliar a resposta de Phaseolus vulgaris (L.) cv. 'Talismã' à inoculação com quatro cepas isoladas da região da Amazônia, UFLA 02-100, UFLA 02-127, UFLA 02-86 e UFLA 02-68, comparadas à cepa CIAT-899 (SEMIA4077), autorizada pelo MAPA como inoculante para cultura do feijoeiro. O experimento foi conduzido em campo na Universidade Federal de Lavras, utilizando-se o delineamento experimental em DBC, com sete tratamentos e com seis repetições, sendo cinco estirpes citadas e dois controles não inoculados, um com N-mineral (80kg ha-1 de N) e outra sem N-mineral. Foram avaliados a nodulação (número e massa seca de nódulos), o crescimento (massa seca da parte aérea), o rendimento de grãos e o teor e acúmulo de nitrogênio na parte aérea...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feijão (Phaseolus vulgaris); Rizóbio; Fixação biológica de nitrogênio.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000700041
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Isolation, Characterization and Symbiotic Efficiency of Nitrogen-Fixing and Heavy Metal-Tolerant Bacteria from a Coalmine Wasteland Rev. Bras. Ciênc. Solo
Ferreira,Paulo Ademar Avelar; Dahmer,Sabrina de Fatima Barbosa; Backes,Tais; Silveira,Andressa de Oliveira; Jacques,Rodrigo Josemar Seminoti; Zafar,Mohsin; Pauletto,Eloy Antonio; Santos,Marco Antônio Oliveira dos; Silva,Krisle da; Giachini,Admir José; Antoniolli,Zaida Inês.
ABSTRACT: Areas affected by coal mining can be recovered by revegetation with leguminous plants associated with nitrogen-fixing bacteria. This study addressed the isolation and characterization of native nitrogen-fixing bacteria from coalmine wasteland under different vegetation restoration approaches using Macroptilium atropurpureum (DC) Urb and Vicia sativa L. as trap plants. The bacteria were characterized and identified on the basis of 16S rRNA sequences. Additionally, nitrogen-fixing strains were characterized for tolerance to high heavy metal and low pH levels, as well as for their effect on growth, nodulation, and symbiotic efficiency of M. atropurpureum and V. sativa. Soil samples were taken from the rhizosphere of eight areas, between 6 and 20...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diversity; 16S rRNA; Rhizobium; Bradyrhizobium; Burkholderia.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100420
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New rhizobia strains isolated from the Amazon region fix atmospheric nitrogen in symbiosis with cowpea and increase its yield Bragantia
Ferreira,Paulo Ademar Avelar; Pereira,João Paulo Andrade Rezende; Oliveira,Dâmiany Pádua; Vale,Helson Mário Martins do; Jesus,Ederson da Conceição; Soares,André Luís de Lima; Nogueira,Cláudia de Oliveira Gonçalves; Andrade,Messias José Bastos de; Moreira,Fatima Maria de Souza.
ABSTRACT Studies in the Amazon indicate a wide diversity of rhizobia with the ability for biological nitrogen fixation (BNF), which could expand the number of strains approved for cowpea. Thus, the aim of this field study was to evaluate the agronomic performance in cowpea of the several strains isolated from the soils of the Brazilian states Acre and Rondônia, and to compare them withstrains approved by the Ministry of Agriculture (MAPA) and withnon-inoculated controls (without and with mineral nitrogen fertilizer). The inoculants performed well. Though less effective than the other strains, the UFLA 03-36 strain also was prominent with respect to grain yield. Because of the positive response of the UFLA 03-129 strain, which led to yield increases greater...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Biological nitrogen fixation; Amazon strains; Seed inoculation.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000100038
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Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition Bragantia
Couto,Rafael da Rosa; Ferreira,Paulo Ademar Avelar; Ceretta,Carlos Alberto; Lourenzi,Cledimar Rogério; Facco,Daniela Basso; Tassinari,Adriele; Piccin,Rogério; Conti,Lessandro De; Gatiboni,Luciano Colpo; Schapanski,Denis; Brunetto,Gustavo.
ABSTRACT Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. In an experiment conducted for 8 years, totaling 12 applications with pig slurry manure (PSM), liquid cattle manure (LCM), swine deep bedding (SDB), and mineral fertilizer (NPK), 460; 505; 1.111; and 535 kg P∙ha−1 were added to the soil through PSM, LCM, SDB, and NPK, respectively. In September 2012, soil samples were collected in the layers 0.0 – 0.04; 0.04 – 0.08; 0.08 – 0.12; 0.12 – 0.16; 0.16 – 0.20 m, prepared and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Animal manure; Availability; P fractionation; Environmental contamination.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100155
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