The article expounds the research results of two ploughing machine and tractor aggregates (МТА). One of them consisted of a tractor HTZ-16131, a front-mounted double-furrow and a rear-mounted four furrow ploughs (the scheme «push-pull» «2+4»), but the other - of the same tractor and a five furrow rear-mounted plough (the scheme «0+5»). The obtained experimental data indicate that the working width of the aggregate assembled according to the scheme «2+4» was by 20.9% greater than that of the aggregate created according to the scheme «0+5». Although the operating velocity of travel of the first MTA turned out to be by 1.5% lower, its efficiency, due to a greater working width, was by 19.5% higher. Therefore the specific fuel consumption by the aggregate created according to the scheme «2+4» turned out to be by 11.5% lower. The mean root square deviation in the depth of ploughing by both the compared aggregates did not exceed the agrotechnical requirements (± 2 cm); however the use of a ploughing aggregate, created according to the scheme «push-pull» «2+4», en-sures soil cultivation with more uniform plough travel by depth.