Analysis of the dependence of winter wheat yielding capacity formation on mineral nutrition in irrigation conditions of southern steppe of Ukraine

This article is dedicated to the research of analysis of the dependence of growth and development of winter wheat varieties Khersonska Awnless and Odeska 267 on conditions of moisture provision and mineral nutrition status, impact of indicated factors and formation of yielding capacity and grain quality. Years of research significantly varied in rainfall amount during growing season. According to moisture supply, 2016 was dry, 2017 was average humid and 2018 was subhumid, which had an impact on grain yield equation. The lowest winter wheat productivity level was formed in 2016. Under supplemental watering without fertilizers the yield of the Khersonska Awnless variety was at the level 2.07 t/ha, and of Odeska 267 variety - 1.51 t/ha. Under provision of vegetative watering, the yielding capacity increased to 3.14 and 2.94 t/ha. Fertilizers also had significant impact on production processes of plants, accumulation of over ground biomass, area of assimilating surface that resulted in the yield increase of winter wheat. On average, over the years of research the most significant influence among considered factors had fertilizers - 43%, irrigation - 32% and variety content of winter wheat - 9%

Economic and biological characteristics and productivity analysis of sunflower hybrids

Evaluation of the biological characteristics of sunflower hybrids and their potential to improve the qualities of the plant under study that are useful for agricultural development is considered relevant. The research aims to carefully and in-depth evaluate the biological characteristics of sunflower hybrids to obtain information on the possibility of improving the qualities of the plant under study that is useful for agricultural development. During the experiment, the properties of such sunflower hybrids as Ukrainian F1 (control sample), P62LL109 Pioneer (Classic), LG5377 (Limagrain), ES Bella (Euralis Semans) and NK Rocky (Syngenta) were investigated. Each of these plants is listed in the State Register of Plant Varieties of Ukraine. The methods used in this research work include the production method, weighing and measuring, visual, laboratory and chemical, and mathematical. It was determined that the best indicators of productivity and economic characteristics are observed in three hybrid species, namely Ukrainian F1 (the best morphological characteristics, the highest weight of 1000 seeds, and hulling level), NK Rocky (Syngenta) (the highest percentage of fat and oil yield per 1 ha) and P62LL109 (Pioneer) (the highest weight of seeds per basket and bulk weight, the lowest hulling level, the highest yield). This may be useful for agricultural enterprises that may be interested in growing new sunflower hybrids with improved productivity and economic characteristics. The results of the study may become an impetus for further research of existing and creation of new sunflower hybrids that will be most useful for agricultural developmen

Analysis of the dependence of winter wheat yielding capacity formation on mineral nutrition in irrigation conditions of southern steppe of Ukraine

This article is dedicated to the research of analysis of the dependence of growth and development of winter wheat varieties Khersonska Awnless and Odeska 267 on conditions of moisture provision and mineral nutrition status, impact of indicated factors and formation of yielding capacity and grain quality. Years of research significantly varied in rainfall amount during growing season. According to moisture supply, 2016 was dry, 2017 was average humid and 2018 was subhumid, which had an impact on grain yield equation. The lowest winter wheat productivity level was formed in 2016. Under supplemental watering without fertilizers the yield of the Khersonska Awnless variety was at the level 2.07 t/ha, and of Odeska 267 variety - 1.51 t/ha. Under provision of vegetative watering, the yielding capacity increased to 3.14 and 2.94 t/ha. Fertilizers also had significant impact on production processes of plants, accumulation of over ground biomass, area of assimilating surface that resulted in the yield increase of winter wheat. On average, over the years of research the most significant influence among considered factors had fertilizers - 43%, irrigation - 32% and variety content of winter wheat - 9%