RESEARCH OF A VIBRATORY ROLLER IN FIELD CONDITIONS

Post-sowing rolling is an essential operation for a good harvest, since it ensures fulfilment of basic agro-technical requirements such as soil density and structure. It should be noted that presently used soil-cultivating rollers do not ensure the fulfillment of agrotechnical requirements and, in addition, have a high specific metal content - more than 300 kg/m. Taking into account these disadvantages, a new design of the vibratory roller was developed, the metal consumption of which is 70 kg/m, which is significantly lower than the existing analogues. Moreover, it provides high-quality tillage due to vibration, and the tillage meets the basic agricultural requirements. As a result of studies of the vibratory roller on barley crops, it was revealed that the density of the soil corresponded to agrotechnical requirements and varied from 1182 kg/m3 to 1230 kg/m3, in contrast to KKZ-6, its density varied from 1098 kg/m3 to 1412 kg/m3. The studies of the structural composition of the soil showed that there were no lumps larger than 50 mm after passage of the vibratory roller, as far as KKZ-6 is concerned, there were, on average, from 10% to 20% of lumps that did not meet the agricultural requirements. As a result of high-quality tillage with a vibratory roller, it was possible to reduce the cost of fuel and lubricants as a result of weight decrease per 1 m of the working width in comparison with KKZ-6, (which was 270 kg/m), in addition it allowed to increase the yield of barley by an average of 35.7%.