UDC 633.11:631.811.98 (477.7)
V. Dvoretskyi, T. Hlushko
In this article are shown the results of researches on the subject of efficiency in sowing treatment of spring wheat and triticale by modern growth regulating substances in the conditions of the Ukrainian south steppe on the south black soil. It has been experimentally proved that before planting application of these substances in a low dose of mineral nutritions – N30Р30 practically provides the productivity of grain at the same level as well as using of the nitrogen nutrition in doses N30. This information confirms that modern growth regulating substances are able to optimize the power of spring crops and it is advisable to use them as an element of energy-saving technologies of grain-crops growing in the steppe of Ukraine. It was established that formation of the grain-growing productivity of spring crops significantly grows in the condition of providing moisture to the plants due to rainfalls in a vegetation period.
It was established that spring wheat and triticale, significantly increase the grain-growing productivity by applying mineral nutrition. So, using N30Р30+ N30 on the stage of appearing a tube in spring wheat average for two years are formed 3,07 t / ha, while without fertilizer 1,57 t / ha and triticale is 3,47 and 2,07 t / ha. Proper treatment of investigated crops is provided by modern growth regulating substances escort and D2. Researches have established a high efficiency of their application in early exit tube plants, and double treatment of crops by substances provides the same level of grain yield, as their nutrition by nitrogen at a dose N30.
It is determined that in a southern steppe of Ukraine the level of productivity of agricultural crops, including spring crops, which are largely determined by the amount of rainfall during the growing season. By optimizing conditions of plants nutrition their productivity significantly increases regardless of weather and climate conditions.
Key words: spring wheat, yield, grain quality, plant nutrition, growth regulating growth regulating preparations, treatment of seeds, fertilizers payback.