V.B. Trots, M.M. Khismatov
Samara State Agricultural Academy, Russia, Samara region, Ust-Kinelsky settlement, Uchebnaya Str., 2
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Summary. The article presents data of researches on influence of component arrangement in the agrophytocenosis on the productivity of the binary mixtures of corn with mallow. One row sowing of these crops caused interspecific competition and yield of green matter in this variant of the experiment was on average 3,7% lower in comparison with the corn grass stand (control). Sowing corn and mallow in alternating rows (1:1) significantly reduced associative stress in the plant community and allowed to use life resources fully and obtain the yield of green mass of 20,5 t-ha that was at 5,6% higher in comparison with control and 9,6% – with one row sowing of corn and mallow. This scheme of biotypes sowing provided the largest specific share of mallow in phytomass yield – 43,4% and thus the maximum output of feed units (4,72 t-ha) and digestible protein (0,58 t-ha) along with balance of digestible protein in green mass – 123 g per 1 feed unit. Grass stand arrangement according to the scheme 2:1 (two rows of corn and one row of mallow) increased the output of green mass per hectare in comparison with variants of sowing in one row and interchange of crops in average at 13,3 and 3,4%; dry matter – at 2,7 and 8,2%. However, the output of feed units and digestible protein was at 7,4 and 4,5% lower in comparison with interchange of crops (1:1).
Keywords: corn, joint sowing, green mass, crop productivity, dry matter, digestible protein, feed unit.