Plant and Soil Science

The article presents the research results on the patterns of layerage formation in the oil radish agrophytocenosis taking into consideration technological aspects of its creation following such factors as the row-spacing (two values of 15 and 30 cm) and seeding rates (in the ratio of 4.0, 3.0, 2.0 and 1.0 million germinating seeds per hectare under 15 cm row-spacing, and 2.0, 1.5, 1.0 and 0.5 million germinating seeds per hectare under 30 cm row-spacing, respectively) on the background of four variants of mineral nutrition. Peculiarities of the vitality strategy of agrophytocenosis in the system of the studied factors as well as the results of such typification of plant idiotypes and their determination into three layers in the vertical projection of the sowing are determined. The mechanism of the layerage formation and intensity in the oil radish cenosis on the background of different backgrounds of mineral nutrition (nonfertilized background, N30P30K30, N60P60K60, N90P90K90) is developed, on the basis of which the factor of layerage is selected as a criterion for an adequate estimation of the positive effect of the supplementary mineral nutrition. In addition, the analysis of the effect of hydrothermal vegetation conditions on the intensity and morphological variability of the ideotypic structure of the oil radish agrophytocenosis has been carried out. 

oilseed radish, agrophytocenosis, layerage of agrophytocenosis, ideotype, vitality