EFFICIENCY OF THE USE OF GROWTH STIMULATORS IN THE GROWING OF WATERMELONS IN THE CONDITIONS OF THE SOUTH OF UKRAINE

  • A. O. Lymar Southern State Agricultural Experimental Station Institute of Water Problems and Land Reclamation National Academy Agricultural Sciences of Ukraine
  • O. O. Kholodnyak Southern State Agricultural Experimental Station Institute of Water Problems and Land Reclamation National Academy Agricultural Sciences of Ukraine
Keywords: transpiration; water holding capacity; photosynthesis; crop capacity

Abstract

The aim of the research. To evaluate the effectiveness of stimulants in the cultivation of watermelon in the South of Ukraine. Methods. Field - crop determination, biometric accounting and measurement; laboratory – analysis of fruit quality, content of mineral nutrients in the soil; economic and mathematical – assessment of economic and bioenergy efficiency of the studied elements and technology in general; mathematical and statistical. Results. It was found that the maximum value of root mass – 337.75 g / plant was recorded in the joint cultivation of "Ecoline universal seed, start-up and growth". The bulk of the root system of watermelon (about 90%) is located in the horizon from 11 to 40 cm. The maximum impact on the photosynthetic potential had the norms of mineral fertilizers. The maximum values on average according to the experiment - 183.65 thousand m2 × day / ha are typical for the rate of fertilizers for a yield of 30 t / ha. The formed area of the leaf surface depending on the elements of the adaptive technology of watermelon cultivation is analyzed, it is concluded that it reaches the maximum values at the beginning of fruit ripening. Depending on the options, it amounted to 3.0–5.1 thousand m2 / ha. The highest yield of watermelon fruits (25.98 t / ha) was formed under the conditions of the following agronomic techniques: sowing of the variety Magician with fertilizers for 30 t / ha in the interaction of seed treatment with the drug "Ecoline Universal Seeds" in foliar treatment of plants "Ecoline Universal Start" and "Ecoline Universal Growth". The dynamics of watermelon yield depending on the hydrothermal coefficient is obtained and expressed as an equation. Conclusions. The use of all stimulants increased the net productivity of photosynthesis, which ultimately increased the yield of watermelon. The most effective was the use of the following agronomic techniques: sowing variety Magician with fertilizers for a yield of 30 t / ha in the interaction of seed treatment with the drug "Ecoline Universal Seeds" in foliar treatment of plants "Ecoline Universal Start" and "Ecoline Universal Growth".

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Published
2021-07-23
How to Cite
Lymar, A., & Kholodnyak, O. (2021). EFFICIENCY OF THE USE OF GROWTH STIMULATORS IN THE GROWING OF WATERMELONS IN THE CONDITIONS OF THE SOUTH OF UKRAINE. Vegetable and Melon Growing, (69), 99-109. https://doi.org/10.32717/0131-0062-2021-69-99-109