WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Sunday, January 21, 2018

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4766. Murray, T.J.. 1921. The effects of straw on the biological soil processes.. Soil Sci. 12(3):233-259.
Experiments are conducted to describe microbial processes. The addition of straw to soil has a harmful effect on nitrate accumulation. Nitrate being lost is transformed to organic N. The process of ammonification is inhibited above 0.9% straw content of soil. Straw is a source of energy for N fixing bacteria. Straw does not effect the biodiversity of microbe populations. Straw stimulates bacteria reproduction. Nitrates from straw are transformed to organic N and are not available to plants. The intensity of the reaction depends on the amount of the straw. T: many, eg.: Effects of straw on nitrogen fixation. Number of bacteria in soils variously treated. Bacteria in various straw treatments.

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