Organic no-tillage

Boyd S, Jin X, Lee J (1990) Sorption of nonionic organic-compounds by com residues from a no-tillage field. J Environ Qual 19 734-738... 

Organic solvents and water extracts prepared from monoculture wheat soils under conventional tillage (CT) and no tillage (NT) indicated that both soils contain some inhibitory compounds. The CGC/MS/DA of some of the organics is presented. Selected organics from CT and NT as well as allelopathic and autotoxic effects are described and discussed. The relationship between the wheat yields in CT and NT and the possible biological stress is indicated. 

Bayer, C., Mielniczuk, J., Martin-Neto, L., and Ernani, P. R. (2002b). Stocks and humification degree of organic matter fractions as affected by no-tillage on a subtropical soil. Plant and Soil 238(1), 133-140. 

Beare M. H., Cabrera M. L., Hendrix P. F., and Coleman D. C. (1994a) Aggregate-protected and unprotected organic matter pools in conventional- and no-tillage soils. Soil Sci. Soc. Am. J. 58(3), 787-795. 

Mulches are used primarily to increase water infiltration, reduce evaporation, modify soil temperatures, control weeds, prevent evaporation, and increase crop yields. They also increase the biological activities in the soil, modify the level of available nutrients, and help to maintain or increase the level of soil organic matter. Under conditions of no tillage, or minimum tillage of fine-textured soils, there is also likely to be a favorable effect on the physical conditions in the soil. These effects are discussed in the following pages. 

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