Tribenuron-methyl and 2,4-D butyl ester compound wheat field herbicide

Abstract

The invention relates to a tribenuron-methyl and 2,4-D butyl ester compound wheat field herbicide, containing the following components in percent by weight: 50-75 percent of tribenuron-methyl and 2,4-D butyl ester and the balance of assistant, wherein the weight ratio of the tribenuron-methyl and the 2,4-D butyl ester is 1:5-12. The herbicide adopts assistants consistently used in the agricultural chemical field, such as wetting agents, dispersing agents, solid carriers and the like and can be made into various dosage forms of compound herbicides respectively, such as wettable powder dosage form, missible oil dosage form, oil suspending agent dosage form and the like. The invention has the advantages that the synergized action is obvious, broad leaved weeds in wheat fields can be effectively prevented and killed off, and especially, the prevention effect of weed Descurainia having drug resistance in the wheat fields is increased; meanwhile, the weed killing speed is increased, the safety to crops is increased and the drug hazard is lowered, thereby enabling the wheat to be increased by 2.9-8.1 percent in yield and the cost to be reduced by 13.4-40 percent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a wheat field herbicide, more specifically, it relates to a tribenuron-methyl-2,4-D-butyl compound compound wheat field herbicide. Background technique [0002] Tribenuron-methyl (tribenuron-methyl) is a sulfonylurea systemic conduction type post-emergence selective wheat field herbicide developed by DuPont in the 1980s. It has high activity, long application period, low residue and low cost of use. It has the advantages of low cost and wide herbicidal spectrum, and has good control effect on broad-leaved weeds such as Artemisia spp. The current situation, existing problems and countermeasures of the herbicide tribenuron-methyl [J]. Pesticide Science and Management, 2004, 25(6): 38-39.). However, due to the continuous use of trisulfuron-methyl in China's wheat fields and improper use of techniques, Artemisia argyi, one of the main broad-leaved weeds in my country's winter w...

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Problems solved by technology

[0003] In order to overcome these shortcomings, people use tribenuron-methyl herbicide and other herbicides in combination, as the application number is 200410024503.9 patent discloses a kind of herbicide compounded by tribenuron-methyl and fluroxypyr, this herbicide preparation can expand the The herbicidal spectrum of broad-leaved weeds in wheat fields, but the price of fluroxypyr is relatively high, which increases the cost of control; the patent application number 01138053.5 discloses a compound of pyroxaprop-ethyl and sulfonylurea herbicides , can control grass weeds and broad-leaved weeds in wheat fields at the same time, and has a wide herbicidal spectrum, but has a poor control effect on the current resistant wheat field weeds Artemisia annua; application number 03113005.4 discloses a sulfonylurea The herbicide compounded with acifluorfen can expand the herbicidal spectrum against broad-leaved weeds in wheat fields, but acifluorfen is a contact herbicide for stem and leaf treatment, so the compound herbicide has a certain effect on wheat leaves certain injury

Wei Yiping (2003) studied the herbicidal effect of the combination of sulfonylurea herbicides and dimethyltetrachloride. The results showed that the weeding speed was accelerated after the combination of the two, but the control effect was not significantly improved.

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