A kind of herbicidal composition containing cyhalofop-ethyl and procarbocarb

Abstract

The invention discloses a weeding composition containing cyhalofop-butyl and prosulfocarb. The weeding composition takes the cyhalofop-butyl and the prosulfocarb as effective components, and the mass ratio of the cyhalofop-butyl to the prosulfocarb is 1: (11 to 52). The weeding composition has strong complementarity, and obvious synergism, can effectively prevent and weed weeds of the grass family, weeds of the sedge family, and broadleaf weeds in a paddy field, overcome the defects of weed spectrum of formulation with single active ingredient, namely the prosulfocarb and the cyhalofop-butyl, and solve the problem of grass disaster in the paddy field.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and relates to a herbicidal composition containing cyhalofop-ethyl and procarbocarb, in particular to a method for controlling grassy weeds, Cyperaceae weeds and broad-leaved weeds in paddy fields. High-efficiency sealing effect, low dosage and convenient use of paddy field herbicide composition. Background technique [0002] The chemical name of prosulfocarb is s-benzyl dipropyl thiocarbamate, which is a selective systemic conduction type soil treatment herbicide of thiocarbamate. Sensitive gramineous weed seedlings, the symptoms of damage by thiocarbamate compounds are that the seedlings are dark green, the plants are distorted, the growth of seedlings and roots is inhibited, and the leaves are prevented from coming out of the sheaths. Leaf plants, severe necrosis in and around the meristem, soil treatment test studies show that the selectivity of pre-emergent applications for gramineous...

AI Technical Summary

Problems solved by technology

This herbicide has high requirements on the timing of application, and it is only effective for grasses, barnyardgrass, and crabgrass in the 1-4 leaf period, and has a poor herbicidal effect on grassy weeds that contain large grasses after the 5-leaf stage

Therefore, it can only be used in the early stage, and it is basically ineffective for unearthed grass seeds, that is, it only has a killing effect on unearthed seedlings, but has no effect on unearthed weeds. Secondly, the speed of action is slow, and it usually takes 7 to 14 days to use. The weeds are dead and the duration of effect is short, resulting in many times of application, usually 2 to 3 times, and the amount of application is large, each application (effective dose) reaches 90-150g / ha, followed by a narrow herbicidal spectrum, only for Effective on grasses, not on sedges, broadleaf weeds and other weeds

[0005] Weeds occupy space in rice fields and compete with crops for glory, water and fertilizer, produce inhibitory substances to hinder rice growth, spread diseases and insect pests, and seriously affect rice yield and quality

At present, there are many kinds of weeds in paddy fields, including gramineous weeds, sedge weeds and broad-leaved weeds, especially gramineous daughter, barnyardgrass, matang and broad-leaved weeds Coria, grass The occurrence of weed damage is serious, and the occurrence period of weed damage is long. In general, herbicides in paddy fields have strong selectivity.

Therefore, only multiple times, multiple varieties, and multiple doses of pesticides can be used. Overdose and abuse of pesticides have brought about phytotoxicity in rice, negative impacts such as rice quality decline and environmental pollution, and increased the cost of pesticides.

[0006] At present, there is no report on the compounding of procarbocarb and cyhalofop for weeding in paddy fields

Images