Formula of post-sowing and pre-emergence herbicide for Foxtail millet

Abstract

The invention discloses a formula of a post-sowing and pre-emergence herbicide for Foxtail millet. The herbicide comprises the following raw materials in parts by weight: prometryn with concentrationof 40-50 g / 667 m<2>, monosulfuron with concentration of 80-90 g / 667 m<2> and water with concentration of 15 L / 667 m<2>. By mixing monosulfuron and prometryn for use, the problems of phytotoxicity andpoor control effect are solved, the problem about weed control in growth stage of the Foxtail millet can be solved once, fewer overall processing raw materials are needed, the production method is simple, and the herbicidal effect is better.

Description

technical field [0001] The invention relates to the technical field of pesticide compositions, in particular to a post-sowing and pre-emergence herbicide formula for millet. Background technique [0002] There are many kinds of weeds in corn fields, which cause serious damage and seriously affect the production of millet. In severe cases, the yield can be reduced by more than 50%. Grass weeds and broad-leaved weeds mainly include gramineous weeds and broad-leaved weeds. Among them, grass weeds include crabgrass, foxtail, barnyardgrass, goosegrass, etc. broad-leaved weeds include quinoa, amaranth, field bindweed, and purslane Amaranth etc. [0003] The occurrence of weeds in grain fields is related to temperature and precipitation. Weeds occur more when the temperature is high, precipitation is high, and soil moisture is good. The spring grain sowing period from early April to late May is usually the period of weeds, and it is also the best time for chemical weeding in spri...

AI Technical Summary

Problems solved by technology

[0004] Over the years, weeding in rice fields in my country has been done manually, which is labor-intensive, time-consuming, labor-intensive, and labor-intensive.

In the 1980s, the Ministry of Agriculture organized the technical research on herbicides in grain fields. Due to the high sensitivity of grain seedlings to existing herbicides, no suitable herbicides could be screened out.

Commonly used herbicides for soil treatment in corn fields include atrazine and promethazine, etc. Since the seedlings are highly sensitive to it, the safety of the millet is poor, and improper use can easily cause phytotoxicity

At the same time, the herbicide spectrum of these herbicides is relatively single, and most of the millet planting areas are arid, less rainy, and windy and sandy, and it is difficult to achieve the ideal weeding effect due to the influence of climate and soil conditions.

Therefore, although promethazin has been registered on millet crops, it has not been widely promoted in production. Commonly used herbicides for stem and leaf treatment in corn fields include 2,4-D and its derivatives, which mainly control broad-leaved weeds, but due to Its drift is serious, and it is easy to cause phytotoxicity if used improperly, so it needs to be used with caution

In addition, there is the special thinning agent sethenoxydim for Zhangzagu and Lazy Valley. Sethenoxydim mainly plays the role of seedling thinning and can control some monocotyledonous weeds. It cannot achieve the ideal weeding effect when used alone. Not registered on millet, it can only be used as a herbicide for sethenoxydim-resistant millet varieties. In view of the above, we propose a pre-emergence herbicide formula for millet after sowing

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