Antigramineous herbicides in the system of tobacco protection
2008
Filipchuk, O.D. | Soboleva, L.M.
The study was conducted in 1999-2007 in the Krasnodar Territory. Selective anti-cereal post-emergence herbicides were applied in the form of concentrated emulsion – fuzilad-super, 125 g/l, and panter, 40 g/l, as well as water-soluble combined fertilizers kristalon and nutrivant plus. In the plantations of tobacco dominants were 26 weed species, among the cereals predominated. With the weed population exceeding the economic injuriousness threshold (above 13-25 items/sq. m) herbicides were applied to suppress them with combined application at half-doses the number of weeds reduced 12.5 times. The average yield of tobacco for 3 years in the untreated control was 580 kg/ha, with intercultivation with handy weeding – 2060 kg/ha, in case of using herbicides at the said dosage – 2000-2150 kg/ha, with herbicides applied together with kristalon – 2430 kg/ha. The net profit of the developed protection system was 11600-16100 rubles/ha. The toxic load on the agrocenosis reduced 22-38 times. Residual quantities of the preparations in raw tobacco were absent
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