Effectiveness of foliar fertilizing spring oilseed rape in the forest-steppe conditions of central black earth economic region of Russia

Abstract

Trace elements are involved in almost all processes of plant life, despite the fact that they need very small amounts. The lack of trace elements in the soil does not lead to the death of plants, but is the cause of a decrease in the rate of their development. In the end, the plants do not realize their capabilities and give a low and low-quality crop. To solve this problem quickly, you can use foliar fertilizing with microfertilizers. The purpose of this study was to assess the impact of foliar fertilizing at different times with new types of complex microfertilizers on the productivity of spring rapeseed and the quality of its oilseeds.The experiments were carried out in the Lipetsk Region in Russia in 2019 and 2020 on Rif spring oilseed rape variety. Three types of fertilization during oilseed rape vegetative development were studied: a rosette stage, a bud-formation stage, and overlapping rosette + budding stage. The following agrochemical preparations were studied: Microel (0.2 L/ha), Life Force (0.4 L/ha), Boroplus (0.75 L/ha), Plantafol 20:20:20 (1 kg/ha), Plantafol 5: 15:45 (1 kg/ha) and Lignohumate (0.15 L/ha). The research results showed that processing foliar fertilization in the rosette stage with further feeding in the bud-formation phase were most effective. Because of the provision with microelements, vegetative plants were able to synthesize a full complex of enzymes. Plantafol 20:20:20 and Plantafol 5:15:45 micronutrient fertilizers provided the maximum increase in the rapeseed yield with double-spray processing, yielding 2.05 and 1.94 t/ha, respectively, and exceeding the control crops by 0.64 and 0.53 t/ha, respectively.