Results 51 to 60 of about 8,524 (239)

Why raw yield data are better than relative yield in informing agronomic and economic decisions

Agricultural &Environmental Letters, Volume 11, Issue 1, June 2026.
Abstract While relative yield is widely used for its comparability, normalization can cause significant information loss. This study reframes yield metric selection as a model evaluation problem to determine the most accurate representation of crop response. We evaluated seven yield metrics with three agronomic models, comparing estimates of a critical
Falin Sun, Wenying Li, Joshua M. Duke, Joshua M. McGrath, Vaughn Reed   +4 more
wiley   +1 more source

Extratores e disponibilidade de micronutrientes em Terra Preta de Índio da Amazônia Central Extractants and availability of micronutrients in Central Amazonian dark earth soil

Ciencia del Suelo, 2009
O objetivo deste trabalho foi avaliar a disponibilidade de B, Cu, Fe, Mn e Zn em solos com horizonte A antrópico (Terra Preta do Índio - TPI) da Amazônia Central com as soluções extratoras Mehlich 1 (M1), Mehlich 3 (M3) e DTPA-TEA.
Adônis Moreira, Wenceslau Geraldes Teixeira, Gilvan Coimbra Martins   +2 more
doaj  

Disponibilidade de cobre para mudas de eucalipto em solos de cerrado

Revista Brasileira de Ciência do Solo, 2010
No Brasil, com a intensificação da silvicultura clonal, o plantio de materiais genéticos mais produtivos e exigentes nutricionalmente tem aumentado o aparecimento de sintomas de deficiência de micronutrientes, principalmente de B e, mais recentemente, de
Fernando Antonio Vieira Rodrigues, Nairam Félix de Barros, Júlio César Lima Neves, Víctor Hugo Alvarez V., Roberto Ferreira Novais   +4 more
doaj   +1 more source

Comparação de metodologia analítica na determinação de fósforo em solos [PDF]

, 2006
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.Amostras de solos foram analisadas em relação ao teor de fósforo empregando os métodos de extração Mehlich-1 utilizado rotineiramente na ...
MACARINI, Jaqueline Sachet
core  

Nitrogen fertilization rates to maximize winter malting barley yield while meeting protein requirements in Ohio

Agricultural &Environmental Letters, Volume 11, Issue 1, June 2026.
Abstract Due to the craft beer industry, there is an emerging need for winter malting barley (Hordeum vulgare L.) nitrogen (N) rate recommendations in Ohio. An experiment was conducted at seven site‐years to identify the optimum spring N application rate to maximize barley grain yield while maintaining protein requirements for malting.
Laura E. Lindsey, Gregory J. McGlinch, Matthew Hankinson   +2 more
wiley   +1 more source

Fósforo disponível determinado por lâmina de resina enterrada Soil phosphorus availability determined by anionic-exchange resin membrane in the soil

Revista Brasileira de Ciência do Solo, 2009
O uso de lâminas de resina de troca aniônica enterradas no solo permite simular, em parte, o comportamento das raízes das plantas em relação à absorção de P. Essa técnica, utilizada diretamente no solo nas mesmas condições que se cultivam as plantas, sem
Jairo André Schlindwein, Clesio Gianello   +1 more
doaj   +1 more source

Soil phosphorus properties and management for perennial crops in the central Amazon. [PDF]

, 2014
Predominant soils in the Brazilian Amazon. Phosphorus constraints to continuous soil use in the Brazilian Amazon. Phosphorus fertilization to perennial crops in the central Amazon.
CRAVO, M. S., LEHMANN, J., MACEDO, J. L. V. de   +2 more
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Net mineralizable soil phosphorus cannot be measured by non‐isotopic approaches

Agricultural &Environmental Letters, Volume 11, Issue 1, June 2026.
Abstract While radioisotopic pool dilution is widely regarded as the most reliable method for estimating soil phosphorus mineralization (Pmin), high costs, low throughput, and safety requirements limit its use. We evaluated the potential of non‐radioisotopic approaches to estimating net Pmin by difference before and after aerobic incubation, analogous ...
Chongyang Li, Andrew J. Margenot
wiley   +1 more source

Adsorption and chemical extraction of phosphorus as a function of soil incubation time Adsorção de fosfato com o tempo de incubação dos solos por extratores químicos

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
The objectives of this work were to evaluate the relationship between phosphate adsorption in different mineral soil constituents of the clay fraction to determine the P recovery rate by the Mehlich-1, Mehlich-3, Bray-1 and CaCl2 0.01 mol L-1 extractants
Fábio Broggi, Alexandre C. de Oliveira, Fernando J. Freire, Maria B. G. dos S. Freire, Clístenes W. A. do Nascimento   +4 more
doaj   +1 more source

Comparison of Resin, Mehlich-1 and Mehlich-3 extractants for phosphorus, in Coastal Tableland soils. [PDF]

, 2011
bitstream/CPATC-2010/21024/1/bp-44 ...
SOBRAL, L. F.
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