Synergistic weeding composition

Abstract

The invention relates to a synergistic weeding composition, and particularly relates to the novel compound weeding composition which is a ternary composition of pyribenzoxim, carfentrazone-ethyl and bensulfuron-methyl, and is used in rice fields. The weeding composition comprises the pyribenzoxim(a), the carfentrazone-ethyl(b), and the bensulfuron-methyl(c) in effective doses of weeding. The ratio range of the three active components (a), (b) and (c), by weight percentage, is 1-100: 1-100:1-100. The weeding composition also can comprise a safety agent. The novel weeding composition is prepared through ternary complex formulation of the pyribenzoxim, the carfentrazone-ethyl and the bensulfuron-methyl, so that defects caused by single use of the pyribenzoxim can be effectively overcome, a weed killing spectrum for weeds is enlarged, and at the same time generation of drug resistance is postponed. The weeds in the rice fields can be basically removed by using the weeding composition for once, so that the weeding composition is labor saving, time saving and effort saving, can alleviate some of the rural labor shortage, and at the same time can play a certain role in increase of both production and income of rice. The weeding composition shows an enhanced effect on the prevention and treatment of broadleaf weeds, gramineae weeds and cyperaceae weeds of the rice fields.

Description

technical field [0001] The present invention relates to a synergistic herbicidal composition, in particular to a new compound herbicidal composition compounded by saflufenacil, mefentrazone and bensulfuron-methyl, which is applied to paddy fields. Background technique [0002] Rice is one of the main food crops in the world. Nearly half of the world's population, including almost the entire population of East Asia and Southeast Asia, live on rice, and its production covers all continents except Antarctica. In the late last century, the average annual rice output in the world was about 400 billion kilograms, and the planting area was about 145 million hectares. Rice is also the most important food crop in my country. my country's rice sowing area accounts for 1 / 4 of the country's food crops, about 35 million hectares per year, while the output accounts for more than half. Regardless of the planting area and output, it ranks first in my country's food crops. [0003] There ...

AI Technical Summary

Problems solved by technology

Bensulfuron-methyl has special effects on vicious weeds such as triangular weeds, sagittarius japonica, and spinach, and it only has an inhibitory effect on barnyard grass. Large triangular grass, poor control effect, high cost of medication

[0016] In the actual use process, saflufenacil has low activity on some perennial sedges, and some perennial weeds will be seriously damaged after continuous use for many years, such as flat stalk, cow felt, Japanese sedge, etc.

The above weeds need to be controlled again, which is labor-intensive, time-consuming and labor-intensive

In addition, its weeding speed is slow. Although the growth of weeds can be inhibited after application, it usually takes 2 weeks for the weeds to die

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