Потенциал конкурентоспособности редьки масличной к сорнякам в зависимости от технологических параметров формирования ее ценоза

Abstract

The article presents the results of estimation of the number of weeds in fodder radish agrophytocenoses formed in the range of recommended seeding rates (1.0 to 4.0 million ps./ha of viable seeds for drilled sowing (15 cm) and 0.5-2.0 million ps./ha of viable seeds for wide-row sowing (30 cm) and norms of fertilizers (N0 P0 K0 (without fertilizers) – N90P90K90). The total number of weed species identified during observations in different years of research was of 38. The most occurring species belong to the families Asteraceae, Brassicaceae and Poaceae – in total 50,0% in the general correlation structure. The study of numbers of weeds, belonging to different storeys showed that the life strategy of different weed species varies depending on experimental factors (sowing method, sowing rates and fertilizer rates). On the basis of regression and graphical analyses recommendations are made on the overall efficiency of the fodder radish as a competitor to weeds. The optimum seeding rates in combination with fertilizers rates were established for maintaining the competitive ability of fodder radish against the most dominant weed species, as well as for the formation of high levels of its productivity.

Keywords

• fodder radish
• weeds
• agrophytocenosis
• sowing method
• seeding rate
• fertilizer rate