Biochemical structure of white-head cabbage production depending on types and rates of fertilizers at irrigation on various types of soddy-podzolic soil | Биохимический состав продукции белокочанной капусты в зависимости от видов и доз удобрений при орошении на различных разновидностях дерново-подзолистой почвы
2012
Stepuro, M.F., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Vegetable Growing
In the conditions of the Republic of Belarus there were presented long-term scientific data of field experiments to study the effect of fertilizers and varieties of sod-podzolic soils under irrigation in the biochemical composition of white cabbage (Brassica oleracea convar. capitata var. alba L.). There were determined the optimal doses of organic and mineral fertilizers under irrigation conditions, there were revealed the best varieties of sod-podzolic soil which made it possible to obtain products of cabbage according to the requirements of standard biochemical parameters. There were developed the optimal and rational doses, combinations and ratios of manure, nitrogen, phosphorous and potash fertilizers in conditions of irrigation (30 t / ha manure + N120P90K120) for cabbage crops. The developed fertilizer system of a specialized vegetable crop rotation provided the highest rates of dry matter content - 9,3-9,4% and 4.6-5.0% of the amount of sugars in the cabbage heads. It was established that creation of optimally balanced conditions for balanced mineral nutrition in irrigation cabbage on different varieties of sod-podzolic soil made it possible to improve the quality of products: especially on sandy soils of the content of ascorbic acid increased by 41-76% compared with its content of 24,28-29,23 mg% by doses of fertilizers on loamy soil.
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