Results of laboratory and field studies of a modular trailer cultivator KMP-14 with a rotary harrow

The purpose of the research is to experimentally determine the agrotechnical and energy parameters of an experimental rotary harrow as part of a modular trailed cultivator KMP–14 for fallow tillage and to confirm the compliance of the unit as a whole with the traction and power characteristics of tractors of traction class 5. The article presents a new rotary harrow for the modular trailed cultivator KPM-14 manufactured by Volgaagromash LLC to improve the quality of continuous pre-sowing and fallow tillage. The results of laboratory and field studies are presented, including agrotechnical and energy assessments of the work of the KMP-14 modular trailed cultivator with a rotary harrow on fallow tillage in an aggregate with a K-744R1 tractor. The results of laboratory and field studies confirmed the improvement in the quality of soil cultivation. Retrofitting the cultivator of the modular trailed KMP-14 with a rotary harrow increases the quality of crumbling of the treated soil layer by 88,6-93,5%, and reduces the number of large lumps of soil (over 50 mm) by more than 40%. The ridges of the soil surface also decrease by more than 20%. According to energy indicators, the modular trailer cultivator KMP-14, equipped with a rotary harrow, corresponds to the traction and power tractors characteristics of traction class 5 and ensures the performance of the technological process of fallow tillage at speed up to 11.8 km/h with an acceptable level of slipping.