Herbicidal composition containing dithiopyr and 2,4-dichlorophenoxy acetic acid and application thereof

Abstract

The invention belongs to the field of pesticides and discloses a herbicidal composition containing dithiopyr and 2,4-dichlorophenoxy acetic acid and application thereof. The herbicide takes dithiopyr and 2,4-dichlorophenoxy acetic acid as the main active ingredients, wherein the mass ratio of dithiopyr to 2,4-dichlorophenoxy acetic acid is (1-70):(1-80) and dithiopyr and 2,4-dichlorophenoxy acetic acid account for 10-85% of the herbicidal composition by mass. The herbicidal composition can be applied to preparing the herbicides for controlling postemergence weeds on the lawns and has obvious effect on preparing the herbicides for controlling the preemergence weeds on the built and planted lawns, especially the herbicides for controlling tall fescue and Kentucky bluegrass lawns. Compared with the single agent, the herbicidal composition delays weed resistance, has wide herbicidal spectrum and long efficacy duration and does no harm to the lawns and the aftercrops on the premise of improving the drug effect.

Description

technical field [0001] The invention belongs to the field of pesticides and relates to a herbicidal composition, in particular to a herbicidal composition containing thiopyr and 2,4-dichlorophenoxyacetic acid and an application thereof. Background technique [0002] At present, a problem that cannot be ignored in lawn construction is emphasizing planting and neglecting cultivation, especially the harm of weeds is becoming more and more serious, which makes the lawn beyond recognition. The harm of lawn weeds to the lawn is not only to compete with the lawn for glory, fertilizer and space, but also to dilute the effect of the lawn and reduce the aesthetic value of the lawn. The damaged turf plants are slender and fragile, with reduced resistance to cold, drought, and trampling, which makes the lawn easy to degrade and die, and even cause grass shortage. Therefore, weed control is the key in lawn planting. [0003] The weeds that harm the lawn are nothing more than the follow...

AI Technical Summary

Problems solved by technology

However, 2,4-D is ineffective against grass weeds, and because it is easy to drift, it is easy to cause phytotoxicity to surrounding flowers and trees, so its use is greatly restricted

[0007] At present, lawn herbicides 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 lawn weeds. Long growth, excessive dosage or uneven application will easily cause residual toxicity to surrounding flowers and crops or subsequent flowers

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