Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 2
Written by Alexandru RUSU, Tamara LEAH
Tillage and removal of agricultural production from fields leave the soil increasingly poor in organic matter. Currently, the reimbursement of organic fertilizers to the soil, with rising fuel prices, has become very expensive, exceeding €30/t within a three-km radius. In this context, straw surpluses from cereal crops are welcome to meet the soil's organic matter needs. They do not require loading, transportation and distribution costs, increasing the profitability of application. Experience has shown that on the chernozemic soils, straw incorporated during cereal harvesting does not affect the nitrogen supply of plants. This process makes it possible to fertilize with straw without supplementing with nitrogen, especially where nitrogen fertilizers are not available. It was shown that among the organic fertilizers, straw combined with nitrogen fertilizers has the highest humus restoration potential. The research show, that humus content increase between 150 and 270 kg/t of straw, humifying 14-30% of organic matter from straw.
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