Influence of plant growth regulators and microfertilizers on yield of seed lines and hybrids of sunflower
DOI:
https://doi.org/10.30835/2413-7510.2015.54055Keywords:
sunflower, line, hybrid, plant growth regulator, microfertilizer, seed yield, economic efficiencAbstract
The aim and tasks of the study. Establish the effect of plant growth regulators and Treptolem Radostim Quantum and micro fertilizers on yield and economic efficiency in growing lines Sh1010A, H526V, H720V and sunflower hybrids Romance and Maximus. Objective of the study was to identify the most effective options for use of drugs and the influence of presowing treatment of seeds along with spraying to increase productivity and economic efficiency of cultivation of sunflower lines and hybrids.
Material and methods. Studies conducted in the fields of the Plant production Institute nd. a V. Ya. Yuriev of NAAS. Presowing seed processing by growth regulators sunflower plants Radostim and Treptolem combined with seed treatment Apron and Kruіzer, spraying of plants by growth regulators and microfertilizer Quantum-oil conducted in phase 4-5 pairs of leaves.
Results and discussion. It shows the influence of plant growth regulators, micro fertilizers and pesticides on productivity and economic efficiency of the production lines and hybrids of sunflower. The most effective in increasing yields line Сх1010А have a dual use of the drug by Treptolem in combination with microfertilizers when spraying, line Х720В and hybrid Romance - double use of the drug by Treptolem, line Х526В – presowing treatment of seeds Radostim or Treptolem, and for hybrid Maximus – double use a drug Radostim in combination with microfertilizers when spraying.
The application of growth regulators of plants, microfertilizers and pesticides provides increased production of seeds of sunflower lines on 0.08-0.17 t/ha and hybrids on 0.14-0.21 t/ha and encourage the multiplication of new hybrids, and also increases the additional profit on 17746-26577 uah/ha and on 231-597 uah/ha respectively.
Conclusions. Consequently, the use of plant growth regulators and microfertilizers in hybrid sunflower seed production is economically justified and profitable and should be an important element of modern technologies of growing of high-quality sunflower seeds.
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