Productivity of varieties and hybrids of spring rapeseed in the conditions of Northern Kazakhstan
Rapeseed is of great food, feed, technical, agrotechnical and ecological importance. Field studies on the yield of varieties and hybrids of spring rapeseed in the conditions of Northern Kazakhstan were conducted in the period from 2019 to 2021 based of the Esil state grain-feed variety testing site, which is located in the village of Yavlenka, Esil district, North Kazakhstan region. The article presents the average results of the conducted studies over three years. The object of the study are varieties and hybrids of spring rapeseed. A competitive test of spring rapeseed was conducted on the experimental fields of the Esil state grain-feed variety testing site, represented by 5 varieties: Yubileyny-standard, Geros, Maikudyk, Hunter, Swallowtail and 3 hybrids: Caliber, Builder, GEN0009. The study of varieties and hybrids was carried out against the background of their predecessors-pure steam and spring wheat, according to several seeding standards, namely 2 million tons. germinating seeds, 2.5 million. germinating seeds and 3 million. germinating seeds. According to the results of three years of research, the best predecessor was established - pure steam and the optimal seeding rate - 2.0 million tons. germinating seeds per hectare. The most productive variety was Maikudyk, from hybrids - Builder.