ORGANO-MINERAL FERTILIZERS MADE OF CHICKEN MANURE AS AN ALTERNATIVE TO COMMERCIAL FERTILIZERS
The replenishment of the nutrients removed with the crop yield by 1/10 only causes the loss of soil fertility. Obtaining organic fertilizers from chicken manure will reduce the shortage of nutrients, expand fertilized areas and improve the ecology of the surrounding areas. In addition, the use of biological products for bio-composting will accelerate the process of composting and will allow obtaining environmentally clean compound organo-mineral fertilizers (OMF). The obtained OMF made of chicken manure with the addition of straw or sawdust, Baikal EM-1 biological product and phosphorite meal in the rates of 0.125, 0.225 and 0.24 t ha at spring wheat cultivation (Altayskaya-75 variety) increased the yield of high quality grain 1.38-1.36 times; against the background of all-nutrient fertilizer the yield increased 1.3 times as compared to the control; the protein content amounted to 14.0-16.8% and gluten content - 32.0-36.4%. The OMF with the use of 1% of straw at composting at a rate of 0.24 t ha ensured the yield which was not less than that with all-nutrient fertilizer application (0.05 t ha).