[Contamination of sowings and yield of the vegetable crops with the cultivation in the system of the vegetable-feeding crop rotation]
2008
Zabara, Yu.M., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Vegetable Growing
The research were carried out at the Institute of Vegetable Growing of the National Academy of Sciences of Belarus on sod-podzolic medium loam soil with the humus content of 2,26-2,42%. It was established that the optimum combination of agrotechnical and chemical methods against weeds in the system of crop rotation allows to lower weediness of soil and crops on 23,2-46,2% and 39,7-78,2% and to receive high yields of cabbage, beets, cucumber and early-ripening potato. Application of herbicides Butizan C (2,0 l/ha), Stomp (4,5 l/ha), Nitran (5,0 l/ha) and tank mix of Semeron + Fyuzilad super (1,0 kg/ha + 1,0 l/ha) reduced crop contamination on 79,3-93,5% and raised cabbage productivity on 28-35%. On beet crops preparations Piramin (8,0 kg/ha), Batanal (6,0 l/ha), Raundap (2,0 l/ha), Dual (2,0 l/ha) and tank mix Piramin + Betanal (4,0 kg/ha + 3,0 l/ha) caused weed destruction on 76,0-91,2% and have increased productivity of culture by 69-116 c/ha in comparison with the control (388 c/ha). Definition of contamination of 0-10 cm soil layer by weed seeds has shown, that their quantity in the end of rotation of crop rotation decreased on 23,2-36,3% and depended on a kind of culture and applied agricultural technicians. Alternation of cultures and application of the herbicides possessing a various spectrum of action, did not essentially change specific structure of weed plants during the six-summer period of the first rotation of crop rotation, but influenced their parity, promoting gradual decrease in sensitive kinds of weeds and increase in number steady, especially long-term
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