FIELD: agriculture. SUBSTANCE: soil is mulched with a mixture of fresh-crushed bark of pines and fir trees, fraction 0.1-0.5 cm, at the rate of 70-80 t/ha. The method is highly economical and ecologically clean and provides for effective control of potato nematode, reducing the number of parasites by 66%. EFFECT: utilization of large amounts of waste wood bark and reduction of antropogenic effect on environment. 3 tbl
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