CELLULOSE-DECOMPOSING POWER IN RELATION TO REACTION OF SOILS

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Abstract
Studies of cellulose-decomposing power in relation to soil reaction included both laboratory and Jordan field plot soils. In the former, soil reaction was the only variable other than relatively small amts. of added lime. The latter soils included a number of variables other than soil reaction. Soil organic matter, as a measure of buffer capacity, and relative nitrifying capacity were the only variables included in the data presented. Highly significant correlations were found to exist between soil reaction and cellulose-decomposing power of the laboratory soils. The max. cellulose-decomposition of each of the 3 soils occurred at pH 7.2. No significant correlation was found between soil reaction and cellulose-decomposing power of the field plot soils. Significant correlations, however, were found between cellulose-decomposing power and organic matter content and between cellulose-decomposing power and nitrifying capacity.

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