A kind of synergistic herbicidal composition containing terbuthiauron

Abstract

The invention discloses a tebuthiuron-containing synergistic weeding composition. The effective components of the composition contain N-(5-tert-butyl-1,3,4-thiadiazole-2-yl)-N'-(2,6-difluoropyridine-4-yl)-N,4-dimethyl-1,2,3-thiadiazole-5-formamidine (TDCA-10) and tebuthiuron, and the effective components and pesticidally acceptable auxiliary components form the composition, wherein a weight ratio of the TDCA-10 to the tebuthiuron is 20:1 to 1:30. Indoor pot experiments and field drug effect experiments show that the two effective components are combined to form synergistic effects, enlarge the weeding spectrum, realize no antagonistic effects and improve the safety of crops.

Description

technical field [0001] The invention relates to a herbicidal pesticide composition, which is especially used for weeding in sugarcane fields, corn fields, rapeseed fields, tea gardens and other farmlands and non-cultivated lands. Background technique [0002] Weeds in farmland have plagued the development of agricultural production since the day humans started farming. Every year around the world, crop yields are reduced by about 14% due to weed damage, and the resulting economic losses are as high as tens of billions of dollars. Under the current level of prevention and control in our country, the annual direct economic loss caused by weeds in farmland is as high as 90 billion yuan. Increase the attention and investment in weed scientific research and control work to ensure high grain yield, increase farmers' income and rural economic development. Taking Sichuan Province, one of the largest agricultural provinces in the country, as an example, there are currently 654 spec...

AI Technical Summary

Problems solved by technology

Disadvantages: First, the pH value is greatly affected by soil type and organic matter content. If the soil is too sticky, the organic matter content is too high, or the pH value does not meet a certain chemical agent, it is not suitable to use soil treatment; second, some herbicides such as metrizone , 2,4-D butyl ester, etc. are prone to phytotoxicity due to leaching of chemicals in sandy soil and low-lying land; third, it is greatly affected by meteorological conditions, especially spring drought, strong wind and abnormal low or high temperature will affect the weeding effect

Disadvantages: First, the weeding effect is not good in the case of drought and little rain, low air humidity and slow growth of weeds; second, some pesticides are prone to phytotoxicity when the temperature is too high or too low; third, post-emergence stem and leaf treatment must be It can only be carried out when most of the weeds are unearthed and have a certain leaf area attached to the liquid medicine. At this time, the early growth of soybeans has been affected by weeds, resulting in reduced yields.

Drought during use has a greater impact on the efficacy of the drug, and the focus is on sealing, which is not ideal for weeds with older weeds

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