Results 11 to 20 of about 5,332 (233)

Extraction methods and availability of phosphorus for soybean in soils from Paraná State, Brazil
Métodos de extração e disponibilidade de fósforo para a soja em solos do Paraná

Semina: Ciências Agrárias, 2012
In studies on the evaluation of methodologies for the analysis of soil, phosphorus (P) has been the single most studied aspect, due to the complexity of this dynamic element in soil.
Jucenei Fernando Frandoloso, Tiago Zoz, Maria do Carmo Lana, Fábio Steiner, Rubens Fey   +4 more
doaj   +1 more source

Eficiência de extratores de fósforo em dois latossolos do Mato Grosso do Sul Efficiency of phosphorus extractors using two oxisols from Mato Grosso do Sul State, Brazil

Pesquisa Agropecuária Brasileira, 1999
Com o objetivo de avaliar a eficiência de três extratores de P em dois latossolos (LEa e LRa) do Mato Grosso do Sul, foi conduzido um experimento em casa de vegetação, com três fontes de P (superfosfato triplo, fosfatos naturais de Araxá e de Gafsa), em ...
William Marra Silva, Amoacy Carvalho Fabrício, Marlene Estevão Marchetti, Carlos Hissao Kurihara, Shizuo Maeda, Luís Carlos Hernani   +5 more
doaj   +1 more source

Availability and chemical associations of cadmium in contaminated tropical soils amended with mineral and organic amendments

Terra Latinoamericana, 2022
Se realizó un estudio para evaluar la variación de pH, disponibilidad y asociaciones químicas de Cd en dos Latosoles previamente contaminados modificados con enmiendas minerales y orgánicas.
Manuel Danilo Carrillo-Zenteno, Raphael Bragança Alves-Fernandes, Renildes Lucio Ferreira-Fontes, Cláudio Pereira-Jordão   +3 more
doaj   +1 more source

Eficiência de extratores de potássio disponível em solos do estado da Paraíba com graus de desenvolvimento pedogenético diferentes Efficiency of available potassium extractants in soils of Paraiba State with different degrees of pedogenetic development

Revista Brasileira de Ciência do Solo, 2010
A disponibilidade de potássio (K) às plantas depende dos teores das formas de K nos solos (K não trocável, K trocável e K solúvel), os quais variam com o grau de desenvolvimento pedogenético dos solos.
Jailma dos Santos de Medeiros, Fábio Henrique Tavares de Oliveira, Jandeilson Alves de Arruda, Montesquieu da Silva Vieira, Maurício Paulo Ferreira Fontes   +4 more
doaj   +1 more source

Changes in land use practices influence soil sulfur fractions and their bioavailability

Frontiers in Sustainable Food Systems, 2023
Changes in land use practices may affect the distribution of soil sulfur (S) fractions and their bioavailability. Therefore, this study was undertaken to assess the influence of different land use changes on the distribution of soil S fractions and their
Dhaneshwar Padhan, Pragyan Paramita Rout, Arup Sen   +2 more
doaj   +1 more source

Interlaboratory Validation of the Mehlich 3 Method for Extraction of Plant-Available Phosphorus [PDF]

Journal of AOAC INTERNATIONAL, 2009
Abstract The Mehlich 3 (M3) method is widely used for extraction of plant-available phosphorus (P) from soil over a wide range of pH values. The method is also used by many laboratories to determine multiple plant-available nutrients simultaneously.
Hailin, Zhang, Solomon, Kaiuki, Jackie L, Schroder, Mark E, Payton, Charlie, Focht   +4 more
openaire   +2 more sources

Evaluation of Mehlich‐3 for determination of cation exchange capacity in Kansas soils [PDF]

Soil Science Society of America Journal, 2021
Abstract Soil testing laboratories across the United States have implemented the Mehlich‐3 (M3) extraction method for phosphorus (P) and other nutrients. Though M3 is known to work well as a multinutrient extractant, it raises concerns for measuring exchangeable cations, particularly in calcareous soils.
Edmond Bryan Rutter, Dorivar Ruiz Diaz, Lynn M. Hargrave   +2 more
openaire   +1 more source

Assessment of micronutrient extractants from soils of Paraná, Brazil

Revista Brasileira de Ciência do Solo, 2011
In Brazil, plant-available micronutrients in the soil can be determined by several chemical extractants, the most common of which are dilute acid and chelating solutions. The purpose of this study was to assess the extractants 0.1 mol L-1 HCl, Mehlich-1,
Marcos Vinicius Mansano Sarto, Fábio Steiner, Maria do Carmo Lana   +2 more
doaj   +1 more source

Improving the Extraction Process of Mehlich 3 Method for Calcareous Soil Nutrients

Agronomy, 2022
Soil nutrient testing is an effective way to uncover soil nutrient status. However, the conventional testing method (CT method) and Mehlich 3 method (M3 method) demand long-time consumption, tedious testing steps, high testing cost, dangerous chemicals contained in extractant, etc.
Changqing Li, Shuo Wang, Mengyu Sun, Dongxiao Li, Huasen Xu, Liangyu Zhang, Cheng Xue, Wenqi Ma, Zhimei Sun   +8 more
openaire   +2 more sources

Efeito do grau de moagem, do tipo de frasco e do volume vazio sobre a variabilidade analítica do fósforo extraído pelos métodos Mehlich-1 e Mehlich-3

Revista Brasileira de Ciência do Solo, 2014
Na execução de uma análise química de solo são empregados diversos procedimentos que, mesmo seguindo-se o protocolo preconizado pelo método de análise utilizado, estão sujeitos a variações nos resultados analíticos, causadas por manipulação das amostras ...
Lenio da Silva Santos, Leandro Souza da Silva, Alberto Cargnelutti Filho, Gustavo Griebeler   +3 more
doaj   +1 more source