Hybrid weeding composite containing Bispyribac-sodium and mefenacet

Abstract

The invention belongs to the field of the pesticide, relating to a hybrid weeding composite containing Bispyribac-sodium and mefenacet. The hybrid weeding composite takes the Bispyribac-sodium and the mefenacet as effective ingredients with the mass ratio of (1-99):(1-99). The weeding composite can prevent and remove paddy field grass family weeds, broad leaf weeds and cyperaceae weeds. On the premise of improving pesticide effect, the weeding composite can delay weed resistance, has the advantages of wide weeding spectrum and long effect lasting period if being compared with a single agent, is safe to the paddy and next batch of crop and is an ideal paddy field weeding composite.

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to the field of herbicides, and in particular relates to a binary compound mixed herbicidal composition of bispyribac and mefenacet. The herbicidal composition has a remarkable effect of weeding after the rice field is applied. Background technique [0002] Bispyribac, also known as Nongmeili, bispyrimidine salicylate, chemical name: 2,6-bis(4,6-dimethoxypyrimidinyl-2-oxyl)sodium benzoate. It is a phenoxycarboxylic acid herbicide, which mainly inhibits the synthesis of acetic acid through roots and leaves and hinders the biosynthesis of branched chain amino acids. It is a selective herbicide and is used in direct-seeding rice fields with a wide weeding spectrum. Its structural formula is as follows: [0003] [0004] Bispyribac is a benzoic acid compound and a highly active ALS inhibitor with high efficiency, broad spectrum and extremely low dosage. Effectively control barnyardgrass ...

AI Technical Summary

Problems solved by technology

It has strong selectivity to transplanted rice. Due to its low solubility in water, it has the highest herbicidal activity under water retention conditions. The soil has a strong adsorption capacity for this product. The treatment layer is formed within 1cm of the soil surface, which can avoid the contact between the growth point of rice and the agent, making it more safe, and has a strong growth prevention and anti-growth effect on barnyardgrass and other weeds whose growth point is on the soil surface. Killing ability, and it also has inhibitory effect on perennial weeds propagated by seeds on the surface, but the effect on deep weeds is low

[0006] At present, herbicides in paddy fields are limited by the safety of crops, and the herbicidal spectrum is also limited. Using a single herbicide alone cannot completely and effectively control the occurrence of weeds in paddy fields. Unevenness is also likely to cause residual toxicity to current crops or subsequent crops

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