Results 61 to 70 of about 1,489 (161)

DISPONIBILIDADE DE FÓSFORO DE FOSFATOS NATURAIS EM SOLOS DE CERRADO E SUA AVALIAÇÃO POR EXTRATORES QUÍMICOS AVAILABILITY OF PHOSPHORUS FROM NATURAL PHOSPATES ON SAVANNAH SOILS AND ITS EVALUATION BY CHEMICAL EXTRACTANTS

open access: yesPesquisa Agropecuária Tropical, 2007
<!-- @page { margin: 2cm } --> <p class="western" align="justify">Conduziu-se um experimento em casa de vegetação com solos de cinco locais da região dos cerrados: Latossolo Vermelho Amarelo Distrófico (LVAd), Argissolo Vermelho Amarelo ...
Huberto José Kliemann   +1 more
doaj   +1 more source

Delmarva legacy phosphorus perspective

open access: yes
Journal of Environmental Quality, Volume 55, Issue 5, September/October 2026.
Nicole M. Fiorellino, Amy L. Shober
wiley   +1 more source

Soil pH thresholds mediate soil biodiversity by regulating interspecific associations in alpine wetlands of the Qinghai–Tibetan Plateau

open access: yesFunctional Ecology, Volume 40, Issue 8, Page 2392-2404, August 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil pH is recognized as a major determinant of soil biodiversity. However, the extent to which soil pH regulates soil biodiversity by influencing the biotic associations among species is unclear.
Cunzhi Zhang   +9 more
wiley   +1 more source

Extração simultânea de alumínio, cálcio, magnésio, potássio e sódio do solo com solução de cloreto de amônio Simultaneous extraction of aluminum, calcium, magnesium, potassium, and sodium with ammonium chloride solution

open access: yesRevista Brasileira de Ciência do Solo, 2004
Atualmente, alguns laboratórios de análise de solo determinam Al, Ca e Mg trocáveis em extratos de KCl 1 mol L-1 e K e Na na solução extratora Mehlich-1, também usada na extração de fósforo.
R. C. Boeira   +3 more
doaj   +1 more source

Ensembling Crop Models and Multi Criteria Analysis to Unlock Bioenergy From Marginal Lands: A Scenario‐Based Assessment From Italy

open access: yesGCB Bioenergy, Volume 18, Issue 8, August 2026.
Multi‐Criteria Analysis to identify marginal land on which three crops (Safflower, castor bean, and Ethiopian mustard) were simulated with two process‐based models (DSSAT, ARMOSA) under two different agronomical management minimums (rainfed and no fertilization) and low input (half‐water and half‐nitrogen).
Claudio Russo   +11 more
wiley   +1 more source

Soil properties and pH of the extractors influence extraction and availability P in alkaline soils from the São Francisco Valley, Brazil

open access: yesRevista Brasileira de Ciência do Solo
Phosphorus (P) is one of the most used nutrients in agriculture due to its high degree of interaction with the soil. It is susceptible to calcium precipitation in poorly weathered and alkaline soils, such as those in the Brazilian Semi-Arid region ...
Patryk Ramon Graciano Rosa Wandersee   +4 more
doaj   +1 more source

Extratores para a quantificação de Fe em solos cultivados com soja - DOI: 10.4025/actasciagron.v26i3.1833

open access: yesActa Scientiarum. Agronomy, 2008
As metodologias de análises de micronutrientes têm sido estudadas visando uma melhor expressão dos seus teores nos solos e uma maior adequação às análises de rotina dos laboratórios.
Maria Anita Gonçalves da Silva   +3 more
doaj   +1 more source

Developing soil‐test‐based sulfur fertilizer recommendations for soybean

open access: yesAgronomy Journal, Volume 118, Issue 4, July/August 2026.
Abstract Declining sulfur (S) inputs from atmospheric deposition, combined with greater S removal by high‐yielding crops, have increased concern about S deficiency in soybean [Glycine max (L.) Merr.]. We evaluated soybean yield and leaflet‐S concentration response to six fertilizer‐S rates (0, 11, 22, 34, 45, and 67 kg S ha−1) across 50 site‐years ...
Md. Enamul Haque Moni   +5 more
wiley   +1 more source

Iron interference in Mo determination in Mehlich-1 and Mehlich-3 soil extracts

open access: yes, 2009
Among the essential plant nutrients, molybdenum (Mo) has the lowest concentration in soils. A routine method for the determination of soil Mo availability is not yet established. Soil analysis methods have been tested but not one has been set to be used in a routine basis in Brazilian laboratories.
Fontes, Renildes L. F.   +2 more
openaire   +1 more source

Fósforo extraído pela solução de Mehlich-1 determinado por colorimetria e ICP em solos do Sul do Brasil Phosphorus extracted with Mehlich-1 determined by colorimetric and ICP methods in South Brazilian soils

open access: yesRevista Brasileira de Ciência do Solo, 2010
A adoção do ICP para análise de fósforo tem apresentado controvérsias, pois o valor determinado por essa técnica, muitas vezes, não é comparável com o obtido por colorimetria. Nos EUA, alguns laboratórios apresentam restrições à adoção dessa técnica, pelas seguintes razões: as recomendações de adubação em uso foram desenvolvidas empregando-se o método ...
Leandro Bortolon, Clesio Gianello
openaire   +1 more source

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