The role of growth regulators in increasing the protective reactions against diseases of soybean and productivity

  • I. Koshevskij
  • P. Aks’onova
  • V. Komisaruk
Keywords: plant growth regulators, soybean, septoria, askahita, downy mildew, plant productive, nodulation, infection of plants, disease

Abstract

The results of studies on the effects of plant growth regulators and biological mikosan-N on the development of soybean diseases, plant productivity and effectiveness of soybean-ryzobial symbiosis. In embodiments where used terrastym compared to control plants Septoria lesions decreased by 6,0-23,1% Ascochyta sojaecola – in 4,7–37,6 % Downy mildew – in 3,2–20,4 %. Application rehoplanta reduce the destruction of plants Septoria lesions on 3,8–27,4 % Ascochyta sojaecola - in 4,1–29,0 % and Downy mildew – in 6,6–28,2 %. Treatment  soybean seeds by moddus against diseases reduce: Septoria lisions – in 5,8–29,1 %; Ascochyta sojaecola – in 3,3–25,6 % and Downy mildew – in 7,8–24,8 %. Seeds of soybean treatment by plant growth regulators positively influenced on the productivity of plants. Thus, compared with the control, a greater quantity of beans from a plant created by 5,5 pieces (Terrastim), 7,7 pc. (Moddus), 19,0 pc. (Regoplant). On variants with treatment of seeds by biological fungicide Mikosan-N, compared with control, the amount of beans increased by 13,2 pc. The weight of seeds per plant depending on the regulators of growth  increased on 4,8–7,3 g. Processing of soybean seeds plant growth regulators has led to a large mass of 1000 seeds to5,1 g(Moddus),10,8 g(Terrastim),10,2 g(Regoplant) and12,9 g(Mikosan-N). The biggest increase of yield in the application of plant growth regulators obtained with use regoplant – 0,35 t/ha, and mikosan – 0,42 t/ha.

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Issue
No 4 (2015)
Section
Agricultural sciences (agronomics, agricultural ecology, land reclamation, ecology, crops husbandry, farming)