Estimation of changes in the content of N, P, K, Mg and Ca occurring in soil under the effect of the 60-year differentiated fertilzation and crop rotation
1986
Mercik, S. (Warsaw Agricultural University, Warsaw (Poland). Dept. of Agricultural Chemistry)
Content of individual eleme2048nts in soil samples from two levels of an experimental field was determined using various methods, also electroultrafiltration. Effects of mineral and organic fertilization and crop rotation on nutrient leaching and on crop yields had been f
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