INFLUENCE OF THE AGROBIONOV PRODUCT AND MINERAL FERTILIZERS ON THE FERTILITY OF ORDINARY CHERNOZEM AND YIELD OF BARLEY
This publication presents the results of the research work on the Agrobionov preparation, produced from local, cheap industrial waste (ash and carbon black) in Republic of Kazakhstan. The study results showed that the introduction of the Agrobionov preparation in combination with mineral fertilizers contributed to the improvement of water-physical, agrochemical and biological properties of ordinary chernozem and increased the barley yield. In particular, the content of agronomically valuable soil aggregates in the 20-40 cm layer increased to 61.2-67.6% (54.1% in the control). The water stability of soil aggregates in the 0-20 cm layer increased to 36-47% (29% in the control). The pH value in the 0-20 cm layer decreased to 7.5-7.8 (8.0 in the control). The microbiological activity of the soil in the arable layer increased in the spring to 27.4-59.8% (12.2%in the control), in the summer to 33.1-26.6% (in the control 25.4%), and in the fall to 35.0-42.6% (31.0% in the control). The content of readily hydrolysable nitrogen in the arable layer of the soil during the tillage phase of barley in variants 1/5 of the estimated dose of fertilizer up to 77 mg/kg and ½ of the calculated dose to 67 mg/kg (33 mg/kg in the control). On average, in two years they received 0.08-0.49 t/ha, an increase in the yield of barley grain or 10.5-64.5%.