The influence of sowing regulations on sunflower productivity
Keywords:
sunflower, time of sowing, row width, hybrids, productivity, oil content, protein, weight of 1000 seedsAbstract
Results of researches, aimed at studying the influence of different planting regulations on productivity of studied sunflower hybrids, are presented. Research was conducted during 2014-2016 in conditions of Ukrainian Steppe on low-humus typical black soil.
The task of research was to identify effects of such agrotechnical techniques as time of sowing and wide of rows on 1000 seeds mass, incrustation of sunflower seeds, content of oil and protein in sunflower seeds.
In result of conducted research, was found that a larger mass of 1000 seeds formed by all studied hybrids with sowing in recommended time (on warming the soil at a depth 10 cm to 10-12 ºС) in variants with row spacing 45 cm.
The most favourable conditions of accumulation the maximum amount of oil in sunflower achene of all studied hybrids were created with late sowing (on warming the soil at a depth 10 cm to 14-16 ºС) with row widths 45 cm. The best was hybrid PR64A15 with oil content - 51.7%.
Protein content varied from 13.7 to 17.9% and was characterized by reciprocal dependencies on oil content of sunflower seeds of the examined hybrids.References
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