The influence of protectants combined with growth stimulator and microfertilizer on seed quality and yield of winter wheat

Abstract

Purpose. To explore the possibilities of increasing the efficiency of winter wheat seed production in the conditions of the right-bank Forest-Steppe of Ukraine by using modern means of protection and stimulation of seeds. Methods. The studies were conducted in 2017–2019 on fields and at the Department of Seed Growing of the Myronivka Institute of Wheat. In laboratory conditions, the sowing qualities and other indices in the certified basic seeds of the variety Hospodynia myronivska with various processing options were determined. Untreated seeds of this variety were as the control variant. There were tested protectants Maxim Star 025 FS (1.5 l/t), Yunta Quattro 373.4 FS (1.5 l/t), Celest Max 165 FS (2.0 l/t), Cruiser 350 FS (0.5 l/t), Pentaphos 322 FS (2.0 l/t) and their combinations with the growth stimulator Vimpel K (1.5 l/t) and Oracle-micronutrient seed (0.5 l/t). The yield properties of the treated seeds were studied in the field according to the method of the State variety testing. Results. Laboratory studies have shown that individual dressing agents significantly reduced coleoptile length (from 1.1 to 1.4 cm), especially in variants with addition of Oracle-micronutrient seed (0.5 l/t). But the addition of the micronutrient contributed to increase in radical rootlet number and the intensification of plant development. Protectants increased field germination (by 2.2–4.4 %) and plant survival until harvesting (by 7–10 %). When using various seed protectants, yielding capacity of the wheat variety Hospodynia myronivska increased by 0.28–0.53 t/ha, the yield of conditioned seeds in progeny increased by 4.3–8.4 %. Conclusions. Based on the studies, when treating the seeds with various protectants combined with growth stimulator and microfertilizer, the increase in yield and seed quality was revealed. Therefore, we propose to use the mentioned preparations in seed farms.