Lupine bare fallow as an effective way of increasing yield and improving grain quality of spring wheat

In the article gross production and grain quality of spring wheat depending on many factors is re- viewed. The most important factor in a complex activating the vital functions of agricultural plants on the formation of high yields is soil fertility, more effi- cient reproduction, which occurs during activation of the biological factors. Experimental investiga- tions were carried out on the experimental field of Agricultural engineering institute of Mari state uni- versity on turf weakly ash medium loamy soil, in the topsoil which contained humus - 1.5-2.0 %, P2O5 - 20.6-25.6, K2 O - 10.3-15.6 mg / 100 g of soil, pH 5.9-6.2. Mineral fertilizers were applied at sow- ing treatment. Field experiments were carried out according to the scheme: 1 - winter rye without fertilizer (control); 2 - green manure of lupine bare fallow (45-64 t/ha of green mass of blue lupine in a phase of PPE beans); 3 - bare fallow of green ma- nure viciously (32-44 t/hectare of green mass); 4 - winter rye + making N77-90P29-34K10-14, designed to receive the planned yield of 3 t/hectare; 5 - win- ter rye + fertilizer amendments on the chopped straw of winter rye (2.5 t/hectare) when making a compensatory dose of nitrogen at the rate of 10 kg d.v. per 1 t of straw.