Abstract

One of the problems of fallow land management in the arid conditions of southern Ukraine is the lack of technical means that would ensure the availability of moisture in the soil at the time of winter crops sowing. The article presents the results of the operational and technological evaluation of the machine-tractor unit consisting of a universal tillage tractor of traction class 1.4 and a new harrowing tool. Its peculiarity is the use of flat-cutting working bodies that loosen the upper (5...6 cm) layer of soil without significant removal of its moist part to the daytime surface. This unit was compared with a basic unit of the same purpose. It included a general-purpose tractor of traction class 3 and a cultivator of the KPS-8 type. Experimental studies have established that the use of a new machine-tractor unit for tillage in conditions of soil moisture deficiency can increase productivity by at least 8% and almost halve specific fuel consumption. The probability of maintaining the tolerance of fluctuations in the depth of tillage of the fallow field at the level of ±1 cm by the new harrowing unit is 78%.

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