Results 271 to 280 of about 66,025 (307)

Soil dielectric spectroscopic parameters dependence on humus content

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
The purpose of this paper is to apply generalized refractive mixing dielectric model (GRMDM) based on the Debye relaxation formula to soils with various humus contents. With this approach, the soil types containing 6.6% and 0.6% of natural humus. Complex dielectric constant or complex refractive index were measured as a function of moisture at the ...
V.L. Mironov, P.P. Bobrov
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CHANGES IN THE HUMUS CONTENT AND BIOLOGICAL ACTIVITY OF AGRO-DARK-HUMUS PODBEL UNDER VARIOUS AGROTECHNICAL METHODS OF TILLAGE

UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, 2022
Differences in the content of humus, microflora and catalase activity in agro-dark-humus podbels soils with different levels of agrotechnical impact and the use of environmentally friendly (phytomeliorative) methods of increasing soil fertility were established.
L.N. Purtova, I.V. Kiseleva, Ya.О. Timofeeva, A.N. Emelyanov, R.V. Timoshinov   +4 more
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Metal Contents in Different Disintegration Fractions of Mor Humus

Zeitschrift für Pflanzenernährung und Bodenkunde, 1992
AbstractSamples from subhorizons Ol, Of, and Oh of forest soils were separated be screening them into five disintegration fractions. Metal contents have been determined in individual fraction.With increasing transformation of the organic material in the most samples there proceeds a concentration of heavy metals in the order: Fe>Cu>Ni>Zn>Pb;
Witold Plichta, Irena Kuczynska
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Humus contents and transformations in native and cultivated soils

Science of The Total Environment, 1990
Abstract In spite of obvious differences in total humus content, and in the relative proportions of humus fractions from one soil to another, the relationships between the ecology and chemical nature of humus are still incompletely elucidated. Most studies centre upon the polymeric nature of humic acids, the mechanisms involved in their formation ...
F.G. Andreux, C.C. Cerri, B. De P. Eduardo, T. Choné   +3 more
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DYNAMICS OF HUMUS CONTENT IN CROP ROTATIONS WITH PERENNIAL GRASSES

2023
To date, the issues of agrophytocenoses optimization and fertilizer application are relevant. This results from the fact that the condition of soil is deteriorating and humus content is decreasing. The aim of the research was to evaluate the effect of saturation of crop rotation with perennial grasses on the humus content in the soil, taking into ...
Svechnikov Aleksandr Konstantinovich, Kozlova Lyudmila Mihaylovna   +1 more
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Dynamics of Radiobrightness Temperature of Soils with Different Humus Content

Mapping Sciences and Remote Sensing, 2002
The results of an experimental investigation of the dynamics of radiobrightness temperature of soils with a different humus content at frequencies 6.25 and 8.0 GHz are given. It is shown that after sufficiently strong irrigation of the surface of trial sectors, a radiobrightness contrast appears as a result of differential change in soil structure and ...
P. P. Bobrov, O. V. Galeyev
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Influence of fertilizing and tillage systems on humus content of typical chernozem

2023
The study aimed to measure the effect of tillage and fertilizing systems in short crop rotation on the content, and сomposition of humuse’s substances in soil’s type as typical chernozem of the zone Forest-Steppe of Ukraine. The highest humus content was determined in the variant with the application of 11.5 t ha–1 of organic fertilizers + N27P38K45 kg
Voitovyk, Мykhailo, Butenko, Andrii, Prymak, Ivan, Mishchenko, Yurii, Tkachenko, Mykola, Tsyuk, Оleksii, Panchenko, Оleksandr, Sleptsov, Yurii, Kopylova, Tetiana, Havryliuk, Oleksandr   +9 more
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HUMUS CONTENT OF COLMATATED SOILS

This article is devoted to the content of humus and its genesis in old and new irrigated colmatated and artificially colmatated soils formed on light gray, brown soils. In irrigated colmatated soils, this function is performed by parent rocks and irrigation water. The content of humus in colmatated soils fluctuates around 0.80-1.3 in the tillage layers,
X.A. Abduxakimova, G.T. Sotiboldiyeva, X.T. Soliyeva, M.A. Yusupova, U.B. Mirzayev   +4 more
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Effect of Sewage Sludge on Soil Humus Content

1983
The addition of organic matter to sandy soils has improved soil properties. At Agricultural Research Centre, Finland, we would like to find out what happens, when sewage sludge is added to soil with good growing condition.
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The influence of relief on the humus content in chernozems

Eurasian Soil Science, 2006
Data on the influence of relief on the humus formation in chemozems are given. The insolation coefficient is proposed for the assessment of the solar energy distribution over the ground surface depending on the slope gradient and aspect. Specific features of the humus accumulation in soils on parent rocks different in texture are estimated using the ...
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