Results 21 to 30 of about 8,524 (239)
SEQUENTIAL EXTRACTION OF PHOSPHORUS BY MEHLICH-1 AND ION EXCHANGE RESIN FROM B HORIZONS OF FERRIC AND PERFERRIC LATOSOLS (OXISOLS) [PDF]
In general, Latosols have low levels of available P, however, the influence of the parent material seems to be decisive in defining the pool and predominant form of P in these soils. This study evaluated P availability by extraction with Mehlich-1 (M-1) and Ion Exchange Resin (IER), from samples of B horizons of Ferric and Perferric Latosols developed ...
Camêlo, Danilo de Lima +4 more
openaire +4 more sources
Para aumentar a precisão nas análises químicas de fertilidade do solo e dosar simultaneamente vários elementos, alguns laboratórios vêm optando pelo uso da técnica da espectrofotometria de emissão ótica em plasma induzido (ICP), em detrimento da técnica ...
João José de Miranda Milagres +3 more
doaj +1 more source
Phosphorus Extraction from Soil Constituents Using Bray P-1, Mehlich-1 and Olsen Solutions
The extraction methods using Bray P-1, Mehlich-1, and Olsen solutions are the most frequently used in equilibrium condition to estimate the available P in the soil constituents. However, each method can gives some different values that may not describe the availability of soil P.
Jamalam Lumbanraja +3 more
openaire +1 more source
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 +3 more
doaj +1 more source
Considerations on the interactions of P in the soil-plant system have a long history, but are still topical and not yet satisfactorily understood. One concern is the effect of liming before or after application of soluble sources on the crop yield and ...
Ricardo Almeida Viégas +2 more
doaj +1 more source
A determinação do fósforo potencialmente disponível por meio dos extratores químicos é dificultada em solos de carga variável, uma vez que existem diversos graus de energia de ligação com os colóides.
L. C. Gatiboni +3 more
doaj +1 more source
Fresh-market Carrot Yield and Quality Did Not Respond to Potassium Fertilization on a Sandy Soil Validated by Mehlich-1 Soil Test [PDF]
Potassium (K) is required for successful carrot ( Daucus carota ) production on sandy soils of the southeastern United States, yet there is little published research documenting most current university Cooperative Extension Service recommendations. Soil test methods for K in carrot production
George J. Hochmuth +2 more
openaire +1 more source
Repetitive long-term fertilizer application leads to phosphorus (P) accumulation in agricultural soils. This can pose environmental risks if the soil’s phosphorus storage capacity is not well understood and considered when planning nutrient management ...
Amana Jemal Kedir +7 more
doaj +1 more source
A avaliação do método modificado da resina de troca de íons para extração de Mn e Fe dos solos foi o objetivo desta pesquisa. Foram utilizadas 44 amostras de solo, cujos teores de Mn variaram de baixos a altos e de Fe de médios a altos.
C. A. Abreu +3 more
doaj +1 more source
Tomato Yield and Fruit Size Did Not Respond to P Fertilization of a Sandy Soil Testing Very High in Mehlich-1 P [PDF]
Tomato (Lycopersicon esculentum Mill.) was grown in southeastern Florida on sandy soils that tested very high in Mehlich-1 P to evaluate the yield response to P fertilization. One location was used in 1995–96, another in 1996–97. Prefertilization soil samples contained 290 (location 1) and 63
George Hochmuth +2 more
openaire +1 more source

