Effect of continuous compost application on water-stable soil macroaggregation in a field subjected to double cropping |
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Authors: | Kazuya Suzuki |
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Affiliation: | Faculty of Agriculture , Yamaguchi University , Yamaguchi , 753-8515 , Japan |
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Abstract: | The influence of continuous application of compost and fertilizer on soil macroaggregation in a field subjected to long-term (ca. 20 years) double cropping (rice and barley) was investigated. Soil samples were collected from 4 different plots: a) No-NF, fertilizer containing P and K but no N; b) F, fertilizer containing N, P, and K; c) F+ LC, fertilizer plus low rate of compost; and d) F+ HC, fertilizer plus high rate of compost. The application of compost and fertilizer increased the degree of macroaggregation (>0.25 mm), the contents of organic C, total N, hydrolyzable carbohydrates, and dithionitecitrate-bicarbonate (DCB) soluble Al, and the hyphal length in the order of No-NF
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Keywords: | active aluminum compost hyphallength polysaccharide waterstable macroaggregate |
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