Clay And Chemical Extractors
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. DISPONIBILIDADE DE POTÁSSIO AFETADA POR CULTIVOS EM SOLOS COM LONGO HISTÓRICO DE ADUBAÇÃO / POTASSIUM AVAILABILITY AFFECTED FOR SUCCESSIVE CULTIVATIONS IN SOILS WITH LONG THERM FERTILIZATION
In soils containing minerals with potassium in non-exchangeable forms, crops uptake a larger amount of this nutrient than that the chemical method can extract, making more difficult the establishment of availability classes and sufficiency levels for potassium. The aims of this study were: a) investigate crop response with potassic fertilization in an Ultiso
Publicado em: 2008
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2. AVALIAÇÃO DA DISPONIBILIDADE DE FÓSFORO E RECOMENDAÇÃO DE ADUBAÇÃO FOSFATADA PARA CANA-PLANTA EM SOLOS DO ESTADO DE PERNAMBUCO / Evaluation of phosphorus availability and phosphate fertilizer recommendation for sugarcane in soils of Pernambuco State
Despite concerns with expected production, the phosphate fertilizer recommendation for Pernambuco lacks of the soil buffer capacity influence on P availability. Therefore, this work had as objective to 1) evaluate the maximum agronomic end economic influence of phosphate fertilizer in sugarcane, considering content and quality of clay fraction; 2) relate phy
Publicado em: 2008
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3. Avaliação e disponibilidade de enxofre em solos cultivados com cana-de-açúcar em Pernambuco / Sulfur evaluation and availability in soils cultivated with sugarcane in Pernambuco
Burning sugarcane for harvesting causes expressive volatization of the sulfur in the plant material, worsening possible nutrient deficiencies over the short and medium time-scales. This research aimed to generate data for using mineral gypsum from Araripe-PE region as a sulfur source for sugarcane. Five field experiments were installed in soils of different
Publicado em: 2007