Uman NUH | today: 05/19/2019

Crop and quality of garlic for application of plant growth regulators.

Author(s) Ulyanych O.I., Doctor of Agricultural Sciences, Professor, Head of Department of of Vegetable Production, Uman National University of Horticulture, Ukraine
Didenko I.A., , , Uman National University of Horticulture
Category The Agronomy
year 2019 issue Випуск 94 Частина 1
pages 186-198 index UDK 635.262:631.811.98
DOI 10.31395/2415-8240-2019-94-1-186-198 (Link)
Abstract The results of studies on the testing of plant growth regulators Ivin, NV-101, Vuxal Bio Aminoplant, Emistim C, Regoplant, Stimpo and Dominant on winter garlic crops under drip irrigation are given. It is shown that one of the factors to increase the yield of winter garlic is the selection of growth regulators, which can increase this figure to 19.3% and improve marketability and quality. In order to identify the effect of the studied drugs on the growth and development of winter garlic plants, phenological and biometric observations were made during the intensive growth and development phase of the plant (60 days after emergence), the area and number of leaves, plant height, the number of roots and the average length were measured. It is proved that plant growth regulators have a significant effect on the emergence of seedlings, which ultimately affects the vegetation period, but there is almost no difference between the options in the passage of the main phases of plant growth and development. It was established that the unequal influence of growth regulators depends on weather conditions, namely, air temperature in the autumn-winter-spring period. It was established that the largest leaf area on a single plant is formed by spraying plants with the Vuxal Bio Aminoplant growth regulator – 3.97 m2, which is 36.4% more control after the use of other growth regulators, this indicator is at the highest level pre-sowing processing and reduced with the complex application and separate spraying of crops. The study of the root system showed that the use of growth regulators in the complex ensures the formation of a larger number of roots and their length. This can be explained by the fact that spraying of crops can compensate for the influence of negative environmental factors in the autumn-winter period on the growth and development of winter garlic plants. From the conducted studies it is evident that the use of growth regulators has a positive effect on the increase in the mass of the bulb from 2.6% to 27.1%, depending on the growth regulator. The best indicators are obtained for the application of growth regulators Emistim C, Regoplant, Stimpo in a complex and spraying plants. From the obtained data it is clear that the most significant increase in yield is observed when using plant growth regulators Emistim C, Regoplant, Stimpo, where the increase in yield is 7.2-26.1%. The use of growth regulators reduced the number of nitrates from 4.0% to 18.4%. Less garlic plants accumulated nitrates for the use of growth regulators Vuxal Bio Aminoplant and Emistim C, where this figure was lower than the control by 17.8-18.4 and 13.9-17.4%, respectively, to the variant. So, plant growth regulators have a positive effect on the growth and development of winter garlic, their use significantly increases and improves the structure of the assimilation surface of the plant, increases crop yield, improves the quality, affecting the profitability of production.
Key words growth regulator, winter garlic, growth, weight, yield.
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