WSU Tree Fruit Research & Extension Center

Organic & Integrated Tree Fruit Production

Saturday, April 21, 2018

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10475. Campbell, C.A., G.P. LaFond, A.J. Leyshon, R.P. Zentner, and H.H. Janzen. 1991. Effect of cropping practices on the initial potential rate of N mineralization in a thin Black Chernozem.. Can. J. Soil Sci 71:43-53.
Potentially mineralizable N (No) was examined as a possible indicator of soil organic matter change due to management, using soil from 30 yr rotation plots near Indianhead, Saskatchewan. A parameter called the initial potential rate of N mineralization (No x rate constant k at time =0) was effective in distinguishing both the absolute and qualitative changes in soil organic N due to various management practices. The results showed that fertilizers can be as effective as legumes, used either for green manure or hay, in increasing the quantity and improving the quality of soil organic matter. Organic matter changes were similar between a 6 yr soil-building rotation and fertilized continuous wheat, but higher than unfertilized continuous wheat.

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