Structure of A Crop and Productivity of a Castor-oil Plant Depending on Periods of Sowing, Norms of Sowing and Seeding Depth

Aigerim Erjanovna Koigeldina, Taken Nurgasenov and Bakytzhan Saykenov Rahmetolaevich

Kazakh National Agrarian University, Kazakhstan, 050010, Almaty, Abaiavenue, 8, Kazakhstan

ABSTRACT: The research purpose is to study the influence of seeding terms, seeding-down depth and seeding rate on yield value of oil crops.The research object is a castor-oil plant of Don large-trussed variety. On the basis of the research on the study of yield formula and yield value of a castor-oil plant depending on the seeding terms, seeding-down depth, seeding methods, and seeding rates we conclude that: a castor-oil plant is a highproductivity oil crop in desert zones of Almaty Province, and edaphic-climatic conditions are well suited for the growth, development and formation of full seed yield. The highest productivity of a castor-oil plant is taken as a result of heating the soil to 12-140! in the depth of 0-10 cm with seeding-down depth of 7-8 cm. This option provides the highest field fertility, preharvesting density, which create favorable conditions for the formation of high yield value – 19,1 centner/ha, that is higher than other experiment options to 0,59,5 centner/ha or to 2,0-49,0%.The most optimum conditions for growth, development and formation of the highest yield value are created when seeding according to the scheme 90E60 cm, seeding rate of 20 thousand pieces of fertile seeds per 1 ha, that results in 18,8 centner/ha of oil seeds of a castor-oil plant.

KEYWORDS: A castor-oil plant; Yield formula; Seeding-down depth; oil seeds; Dry steppe zone; Don large-trussed variety; cultivation technology

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