[PDF] Characterization Of Refractory Soil Organic Matter In Long Term Agroecosystem Experiments eBook

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Page : pages
File Size : 45,70 MB
Release : 2005
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The objective of this work is to characterize the refractory soil organic carbon (SOC) in arable soils, i.e. that C pool which shows very high turnover times. The experimental approach is the comparison of SOC in two contrasting treatments of long-term agroecosystem experiments: C-depleted plots, which are relatively enriched in refractory compounds, are compared with the fertilized counterparts at a particular site. Most of the refractory SOC is associated with fine separates (

Author : Fred Magdoff
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Page : 0 pages
File Size : 23,38 MB
Release : 1996
Category : Electronic books
ISBN : 9780891188223

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Soil organic matter testing: an overview. Soil organic matter fractions and implications for interpreting organic matter tests. Estimation of soil organic matter by weight loss-on-ignition. Using soil organic matter to help make fertilizer and pesticide recommendations. Assessing soil quality by testing organic matter. Carbon fractions in compost and compost maturity tests.

Author : Michael Schilling
Publisher :
Page : 104 pages
File Size : 13,15 MB
Release : 2004
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ISBN : 9780549022695

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Soil organic matter (SOM) is the largest reservoir of organic carbon at the earth's surface. Its chemistry plays a crucial role in a wide range of issues including agricultural sustainability, pollution/contamination, and medicine. For instance, SOM is vital to soil fertility by affecting physical and chemical properties of soil and in controlling soil microbial activity by serving as a source for mineralizable C and N. Soil organic matter is also very influential in the transport and fate of organic and inorganic anthropogenic chemicals because of its heterogeneity and highly functionalized nature. Therefore, an understanding of SOM at the molecular level is a critical and worthwhile undertaking.

Author : Ladislav Menšík
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Page : 0 pages
File Size : 40,91 MB
Release : 2019
Category : Electronic books
ISBN :

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Soil organic matter (SOM) plays an important role in the terrestrial ecosystems and agroecosystems. Changes in the agricultural sector in the countries of the Central and Eastern Europe (the Czech Republic, Slovakia, Poland, etc.) within the past 25 years have negatively affected the SOM and contributed to the soil degradation. The aim of this chapter is the evaluation of the long-term application of mineral fertilizers and farmyard manure: the Control (without fertilization), farmyard manure (FYM + 0), FYM accompanied with NPK (FYM + N3PK), and FYM with mineral nitrogen FYM + N (FYM + N2), on the essential chemical properties of the soil and yield of the fundamental arable crops in the long-term field experiments, established in different soil and climate conditions (black soils, brown soils, cambisols, altitude ranging from 260 to 650 m a.s.l.) of the Czech Republic in 1955, using the modern multi-criteria statistical methods (PCA, FA, CLU, etc.). The long-term and regular application of organic manure and organic manure with mineral fertilizers (FYM + N3PK and FYM + N2) optimize the soil characteristics, stabilize crop and feedstuff production, and increase the adaptation potential of the soil in the Czech Republic, which is supposed to be weakened due to the expected changes of the environmental conditions in the near future.