DEPENDENCY OF PLANTING PERIOD AND SCHEME ON THE DYNAMICS OF SUNFLOWER BIOMASS FORMATION
Ключевые слова:
sunflower, Sam QXI 20–80, SUR, planting period, planting scheme, biomass.Аннотация
In the article, on the land freed from grain crops, as a repeated crop, the varieties of sunflower Sam QXI 20-80 and SUR are planted on July 1, 10, and 20, and the row spacing is 70 cm; the plant spacing is 20, 25, 30, 35, and 40 cm. Data on the dynamics of the formation of wet and dry matter when planted in planting schemes were given. The delay in the planting period from July 1 to July 10 and 20, depending on the varieties, will lead to a decrease in biomass.
In each planting period, according to the nutrition area and the number of bushes per unit area, the highest index was recorded in the planting scheme of 70x30-1 cm in the Sam QXI 20-80 variety and 70x25-1 cm in the SUR variety.
Библиографические ссылки
Abdukarimov D.T., Lukov M.K., Lukova I. An effective method of growing sunflower as a repeat crop after grain crops.// Uzbekistan q-x journal. № 5. P. 2005. 21-22.
Azizov T.B. Anorboyev I.U. Recommendations for growing a plentiful harvest from sunflowers// Tashkent 2008. P. 16-59.
Lukov M.K «Dva urajaya semyan podsolnechnika v godu». Kishovarz, jurnal «Zemledeles» Tojikiston Agrar universiteti. Dushanbe 2009 23-41 b.
