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Information × Registration Number 0219U000116, 0116U001111 , R & D reports Title Identify the optimal parameters of the technology of growing seed and ware potatoes under irrigation conditions of the Steppe of Ukraine popup.stage_title Head Chernschenko Igor Ivanovich, Registration Date 16-01-2019 Organization Institute of irrigation farming NAAS of Ukraine popup.description2 In the period from germination to the appearance of buds, the average daily evaporation was up to 40 m3, and in the flowering period up to 68 m3 / ha per day. The use of whole tubers for spring planting yielded a yield of 13.61 t / ha. The use of shares of large tubers provides an increase in yield of 1.01-1.53 t / ha. The term of cutting both before warming up and immediately before sowing did not have a significant advantage, but in some years cutting of tubers in the early period may provide yield increase. The maximum yield and the best economic indicators were formed when cutting seed before sprouting, using N90P90K90 and the Stemovit complex - 20.38 t / ha, the conditional net income was 15.42 thousand UAH / ha and the profitability was 20.21%The correlation coefficient between total water consumption (Е) and early harvest potato yield for 2016-2018. Has made r = 0,74 ± 0,25. More potato yield depended on the ratio of total water consumption and the sum of air temperatures during the flowering period (E /t) - r = 0.93 ± 0.16. The regression equation has the form Y = 18.8Х-116.0, where X is the ratio of the total water consumption (m3 / ha) to the sum of temperatures during the flowering period (° C). Seed material of the third year of use from the crop of two harvests per year was not inferior in productivity to the elite; seed from summer planting of last year's tubers formed a crop 12.9% lower than the elite; seed material of biological ripeness lost 46.3%. Reproduction of seed for three years showed that the use of a double-crops crop preserves the productivity of seed material by 96.3%, summer planting of last year's tubers by 81.5%, and the use of seedlings of biological ripeness for seed purposes reduces yields by 45.3%. Product Description popup.authors Балашова Галина Станіславівна Юзюк Сергій Міколайович popup.nrat_date 2020-04-02 Close