Results 51 to 60 of about 1,437 (175)

End‐of‐season corn stalk analysis as a tool to fine‐tune potassium and nitrogen management

Agronomy Journal, Volume 118, Issue 4, July/August 2026.
Abstract Corn (Zea mays L.) requires proper nutrient management for optimal growth, and tissue testing plays an important role in refining recommendations. Corn stalk nitrate test (CSNT) is used to evaluate nitrogen (N) management; however, a comparable plant‐based diagnostic tool for potassium (K) is lacking. This study evaluated extractants for stalk‐
Gabriela Andrade L. Mengez, Gerson L. Drescher, Trenton L. Roberts, Jason P. Kelley, Michael P. Popp, Alden D. Smartt, Qamar Sarfaraz, Lincon Stefanello   +7 more
wiley   +1 more source

Ácido ascórbico como agente redutor para determinação de fósforo por colorimetria

Ciência Rural, 2014
Em muitos laboratórios de análises de solos, o ácido 1-Amino-2-naftol-4-sulfônico (ANS) é usado como agente redutor para determinação do P por espectrometria de UV/Visível.
Lenio da Silva Santos, Leandro Souza da Silva, Gustavo Griebeler   +2 more
doaj   +1 more source

Performance of Mehlich-1 and Mehlich-3 extractors in quantifying phosphorus in soils fertilized with liquid swine manure

Bioagro
Phosphorus is considered the most limiting essential macronutrient for plant production in soils of tropical climates. As the chemical and physical properties of the soil influence the availability of P to crops, the use of suitable extractants can increase the precision of the results obtained in soil analysis to enable the maximization of the ...
João C. Arruda-Oliveira, Josimar B. Silva, Emerson S. Miranda, Jholian M. Ribeiro-Santos, Oscarlina L. S. Weber   +4 more
openaire   +1 more source

AVALIAÇÃO DA DISPONIBILIDADE DE FÓSFORO NO SOLO PARA O MILHO PELOS MÉTODOS MEHLICH-1 E MEHLICH-3

Scientia Agraria, 2009
Nos estudos de avaliação de metodologias de análise de solo, o fósforo tem sido o elemento mais estudado, fato este associado à complexidade da dinâmica do elemento no solo. A solução de Mehlich-1 vem sendo usada por muitos anos pelos laboratórios de análise de solo do Brasil, porém é um método que superestima a disponibilidade de fósforo no solo para ...
Leandro BORTOLON, Clesio GIANELLO, Jairo André SCHLINDWEIN   +2 more
openaire   +2 more sources

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

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

Bioavailable phosphorus across Florida’s diverse soil orders: implications for crop productivity and environmental protection

Frontiers in Environmental Science
Effective phosphorus (P) management is critical for sustainable agricultural production in Florida. The state’s diverse acid-mineral soils, including Alfisols, Entisols, Spodosols, and Ultisols, exhibit distinct physiochemical properties that profoundly ...
Vimala D. Nair, Dinesh Phuyal, Lilit Vardanyan   +2 more
doaj   +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

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

Correlation and calibration of Mehlich‐3 sulfur for Kentucky bluegrass

Crop Science
Abstract Sulfur (S) is a crucial macronutrient for turfgrass growth, and declining atmospheric deposition has increased the risk of S deficiency. Reliable Mehlich‐3 soil test interpretations for S are lacking for turfgrass.
Travis Shaddox, Douglas Soldat
openaire   +1 more source