abstract
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In Ukraine, Triticum aestivum has the main share in the structure of wheat sowing area - on average, more than 90% of the total wheat sowing area - 6–7 million hectares; Triticum durum - 5-10%. Winter form of Triticum aestivum is a predominant form - about 80 - 85%, spring form is sowing on small areas. Predominant form of Triticum durum is a spring form, winter Triticum durum is growing mainly in the southern regions of Ukraine - in the Steppe zone, which is connected (due) to low frost resistance of Triticum turgidum ssp. durum.
Field experiments with various forms were carried out in regions of Ukraine/. Yield of winter Triticum aestivum is quite stable and amounts 6.50 - 12.0 t/ha, depending on variety, fertilizing system and protection system and weather conditions of growing. Winter Triticum aestivum responds positively to high doses of fertilizers, to 3 - 4 fertilization by nitrogen. A special feature of growing winter Triticum aestivum is a reasonable seeding rate - pediculate varieties are sown with rate 3.5–4 million pieces of germinating seeds/ha; spiked types - 4–5 million germinating seeds/ha. Yield of spring form Triticum aestivum is significantly inferior to the winter form and reaches 4.20 - 4.85 t/ha in the Right Bank Forest-Steppe of Ukraine. With providing by moisture and nutrients yield of spring form Triticum aestivum reaches 5.75 - 6.71 t/ha in the western part of the Right-Bank Forest-Steppe. Yield of spring Triticum durum in the field experiments was 1.68 - 6.01 t/ha. The highest yield was with applying N120P120K120 + N30 BBCH 30.. With fertilizer application yield and quality of grain potential of spring durum wheat reached a maximum - protein content in grain reached 15%; vitreousness reached 78%; grain nature is 758 g/l. Yield of spring form Triticum durum and spring form of Triticum aestivum in the Left Bank Forest-Steppe of Ukraine is much lower.