Sentences with phrase «soil organic matter content»
The USDA organic regulations recognize the risk of heavy metal contamination at § 205.203 (c): «The producer must manage plant and animal materials to maintain or improve soil organic matter content in a manner that does not contribute to contamination of crops, soil, or water by plant nutrients, pathogenic organisms, heavy metals, or residues of prohibited substances.»
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A major result was that after just five years, soil organic matter content was 8.6 % greater in the strip - till plots when compared to the no - till plots.
The positive impacts of organic agriculture on biological activity, micro-organisms and soil organic matter content reported in the paragraphs above are therefore also valid for soils in the tropics and subtropics.
Not exact matches
High organic matter content also helps to avoid soil acidification.
The organically - farmed soil not only had deeper topsoil but also significantly higher organic matter content and suffered less soil erosion than the conventionally farmed soil.
Research on organic matter concentrates on measuring the soil organic carbon content parameter.
The results of chemical analysis of soils samples collected before planting and harvest of the strawberries indicates that the organic matter content in the soil of the organic system was higher than that of the non-organic system (see table below).
As mineralization processes proceed much faster on ferralitic soils in the tropics and subtropics than on soils typical to temperate and continental zones, a high organic matter content and high biological activity are the pre-requisite for sustainable soil fertility.
The review of relevant research conducted by Stolze et al. (2000) concludes that under European conditions organic agriculture has beneficial effects on the characteristics of soil organic matter because the soil organic carbon content is higher on organically farmed soils than on conventional ones.
Organic matter content is usually higher in organically - managed soils, indicating higher fertility and stability of organic soils as well as moisture retention capacity, which reduce the risk of erosion and desertification.
The findings contradict the widely held view that soils with high water content necessarily accumulate organic matter better than dry soils, which could have implications for agricultural and wetlands conservation practices, Hall said.
These interventions helped to increase soil water retention and organic matter content and help prevent the little topsoil there was from draining off to the lowlands.
Improved grazing practices and land management practices that increase the organic matter content in soil also sequester carbon.
Clay content and initial organic matter content are the main factors in the determination of new equilibrium levels of carbon and nitrogen in the soil.