Influence of crop rotation and irrigation on properties of soil humus substances
1987
Grzebisz, W. | Jaworski, R. (Agricultural University, Poznan (Poland))
When cereals were increased to 75 percent of the rotated crops there was a decrease in the amount of total carbon in the soil and an increase in the content of mobile humus fractions. Those adverse effects were alleviated by correct nitrogen fertilization and manuring
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