Compound weeding composition

Abstract

The invention discloses a compound weeding composition which comprises active ingredients of alon, clodinafop-propargyl and thifensulfuron in a mass ratio of (30-60):(1-10):(0.5-5). In the composition, the components are synergic, thus the composition has a good weeding effect, a wide weeding spectrum, few residues, safety to crops, low cost and wide applicability, and can be applied to weeds which are difficult to remove.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a compound herbicidal composition. Background technique [0002] Isoproturon is a substituted urea selective herbicide. The pure product is white crystal, colorless and odorless, with a melting point of 151-153°C. The solubility in water at 20°C is 70mg / L. Hardly soluble in water, soluble in most organic solvents, relatively stable to acid, alkali and light, available in wettable powder, low toxicity to humans and animals. Rat acute oral toxicity LD501826mg / kg. Prepared by reacting p-isopropylphenyl isocyanate with dimethylamine. Used for controlling annual weeds in barley, wheat, cotton, peanut, corn, rice, and bean crops, the dosage is 1.0-1.5kg / ha. Isoproturon is a systemic conduction soil treatment agent and a stem and leaf treatment agent. After the pesticide is absorbed by the roots of the plant, it accumulates in the leaves, inhibits photosynthesis, and leads to...

AI Technical Summary

Problems solved by technology

[0005] At present, herbicides have been widely used in agricultural production, but due to the large amount of abuse and poor adaptability to different situations, a single herbicide can easily lead to problems such as poor weeding effect, low safety, and easy to cause different degrees of production reduction.

In recent years, herbicide mixed preparations have increased sharply, but the unfavorable conditions such as repeated preparation and use of a large number of low-level, and only focusing on low cost while ignoring safety and efficacy are still serious, which has caused phytotoxicity to farmland, not only to rice. Unfavorable growth will also affect the growth of the next stubble

In addition, the control of refractory weeds is still a difficult problem in the application of existing herbicides.

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