Results 1 to 10 of about 73 (68)
The yield values of densimetric fractions from typical chernozems of different land use types
Бюллетень Почвенного института им. В.В. Докучаева, 2020 One of the most justified and applied approaches to isolating pools of soil organic matter is fractionation in heavy liquids. The main problem with this approach is rather large losses in the separation of fractions at the stage of washing fractions from
Yu. R. Farkhodov +6 more
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Semina: Ciências Agrárias, 2016 Mineralization of organic residues deposited on the soil surface in a no-till system (NT) maintains a continuous flow of different forms of carbon (C), which might interfere with densimetric fractions of soil organic matter (SOM).
Roni Fernandes Guareschi +2 more
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Revista Brasileira de Ciência do Solo, 2008 O fracionamento físico densimétrico é uma técnica que permite estudar a proteção física da matéria orgânica (MO) no solo, sendo utilizadas, de forma indistinta, soluções densas de iodeto de sódio (NaI) e de politungstato de sódio (PTS).
Paulo Cesar Conceição +4 more
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Revista Brasileira de Ciência do Solo, 2004 Sistemas de manejo conservacionistas aumentam o conteúdo de carbono (C) e nitrogênio (N) orgânico do solo. Todavia, os efeitos sobre as frações leves da matéria orgânica do solo (MOS) ainda são pouco conhecidos, especialmente em ambiente tropical.
E. F. M. Pinheiro +3 more
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Distribution of Se in Floating Coals with Densimetric Fractions in China
Minerals, 2023 Scholars at home and abroad have studied the concentrations of Se in coal and the relationship between Se and sulfur assignment. However, little attention has been paid to the study of Se in floating coal, especially the distribution pattern of Se in floating coal of densimetric fractions and the influencing factors.
Guchun Zhang +8 more
openaire +1 more source
Ambiente Construído, 2022 Abstract Sugarcane bagasse ash is a by-product produced by the energy cogeneration from biomass burning. Different processes can be applied to this material to adapt its chemical and physical characteristics to its use as pozzolan. This work aims to evaluate the effectiveness of the densimetric fractionation process in production of sugarcane bagasse ...
Guilherme Chagas Cordeiro +2 more
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ORGANIC CARBON AND TOTAL NITROGEN IN THE DENSIMETRIC FRACTIONS OF ORGANIC MATTER UNDER DIFFERENT SOIL MANAGEMENT [PDF]
Revista Caatinga, 2016 ABSTRACT: The evaluation of land use and management by the measurement of soil organic matter and its fractions has gained attention since it helps in the understanding of the dynamics of their contribution to soil productivity, especially in tropical environments.
PRADO, MARCELO RIBEIRO VILELA +3 more
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Бюллетень Почвенного института им. В.В. Докучаева, 2023 Due to the complexity and heterogeneity of soil organic matter, a very wide range of methods and approaches is used to study it. This generates an excessive number of terms, definitions and indices, which makes it difficult to understand and interpret ...
V. A. Kholodov +6 more
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Metabolizable Energy For Chickens Of High And Low Density Corn Fractions Segregated In Densimetric Table [PDF]
Brazilian Journal of Poultry Science, 2019 ABSTRACT Corn is the main energy feed used in broiler chickens rations in most countries. In the literature, there are indications that high density corn segregated in densimetric table contains higher value of metabolizable energy than the corresponding fraction of low density, but the reasons are not clear.
GSN Komatsu +6 more
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Semina: Ciências Agrárias, 2018 Despite the potential to provide N to crops, the rapid incorporation of green manure nutrients into stable fractions of organic matter in the soil (SOM) may reduce the efficiency of green manuring. Thus, the objective of this work was to characterize the
Wander Douglas Pereira +4 more
doaj +3 more sources