Biometric parameters of sunflower hybrid plants under the influence of feeding conditions and retardant
DOI:
https://doi.org/10.31548/dopovidi.2(108).2024.013Keywords:
biometric indicators, hybrid, fertilizers, retardant, sunflower, feeding conditionsAbstract
Crop productivity management is aimed at forming optimal crop parameters that would provide maximum opportunities in the activity of the photosynthetically active surface of plants, contributing to the assimilation and accumulation of dry matter. The activity of crop is determined not only by the indicators of the leaf surface area, but also by the parameters of the leaves, their quantity, tiering, and the height of the plant.
Correlation analysis between plant height and stem diameter shows a direct positive correlation dependence, with correlation coefficients depending on the hybrid of 0.947-0.976. There is a direct correlation between plant height and the number of leaves on a plant, with correlation coefficients of 0.756-0.791.
The maximum values of biometric parameters (plant height, stem diameter, number of leaves on a plant) were obtained on the variants of the RGT Wollf hybrid with the application of N120P80K180. Increase in biometric parameters of sunflower plants was observed according to increasing doses of fertilizers. The difference in these indicators between the variants N120P80K180 and N100P65K150 was insignificant. The use of the Setar retardant ensured a decrease in the height of the plants and contributed to an increase in the number of leaves on the plant and the diameter of the stem.
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