Formulation of the problem: In the structure of the stern wedge always should be given a proper place to plants that provide animals with high quality feeds, so studies aimed at increasing the productivity of forage crops are relevant.
The purpose and tasks of the research are to study the formation of corn productivity on green feed in a blend of soybean depending on the method of sowing on the unimproved lands of the South of Ukraine (Mykolaiv region).
Presentation of the main research material. The least greenhouse mass of corn was formed in 2017 (86 mm of precipitation during the growing season), at a single-row (control – intersection of 15 cm) method of sowing – 14,1 t / ha, for broad-row – 16,2 t / ha. Due to the consolidation of soybean corn crops, these figures increased to 14.9 and 16.8 t / ha respectively. The highest yield (in the range from 16.2 to 19.6 t / ha) was obtained in 2016 (187 mm of precipitation).
On average, in the years 2015-2017, the green mass was most often formed on broad-leaved (45 cm) crops of soybean maize – 17.9 tonnes / ha of green mass, up 11.9% against control. Compared to the monovided broad-row method of corn sowing, the yield increase for sealing its crops by soybean was 0.6 t / ha. At the same time, the lameness of corn plants increased. The collection of feed protozoan units from 1 hectare of monoedic broad-leaved corn sowing was 2.60 tons, and in common crops of soybean maize it reached a level of 3.29 tons. The largest amount of exchange energy was contained in a crop collected from broad-leaved corn crops, soybean compacted – 31.16 GJ / ha, whereas in control crops – by 20.2% less.
Conclusions The most important factor that contributes to increasing the productivity of crops is the level of moisture provision. The productivity of agrophytocenosis (dry matter collection, feed proton units, exchange energy, etc.) and the value of feed are significantly improved due to the thickening of corn soybean crops, especially in the wide-spread (45 cm) sowing method.
Keyword: mixtures, corn, soybean, methods of sowing, precipitation, productivity of fodder plants.