Topramezone-containing corn field weed control composition

Abstract

The invention discloses a topramezone-containing corn field weed control composition and application of the corn field weed control composition. The topramezone-containing corn field weed control composition is prepared from a first active component, a second active component and a third active component which are respectively 0.5-30% of topramezone, 0.5-25% of nicosulfuron and 5-80% of atrazine by weight percent. The composition can be prepared into agriculturally acceptable suspending agent, water dispersible granules, wettable powder or dispersible oil suspending agent. The topramezone-containing corn field weed control composition is reasonable in components and good in corn field weed control effect; the activity and the weed control effect of the corn field weed control composition are not a simple superposition of the activity of all the components; compared with the existing single preparation or binary composite preparation, the topramezone-containing corn field weed control composition has remarkable synergism besides remarkable weed control effect; the composition is less in consumption, large in herbicide controlling spectrum and good in safety for corns. The corn field weed control composition has a remarkable control effect for the weed of a corn field.

Description

technical field [0001] The present invention relates to a corn field herbicide composition containing oxatrazone, which is composed of the first active ingredient oxatrazone, the second active ingredient nicosulfuron, the third active ingredient atrazine and adjuvants, belonging to compound Dispensing pesticide technical field. Background technique [0002] Weeds are common in cornfields, and there are many kinds of weeds, mainly broad-leaved weeds such as retroflexus, quinoa, bindweed, black nightshade, amaranth, velvetleaf, amaranthus, purslane, cocklebur, and duck's foot Grass, cow chickweed, etc.; Gramineae weeds such as barnyardgrass, crabgrass, foxtail, goosegrass, bermudagrass, stephenia, etc.; Cyperaceae weeds such as Cyperus cyperus. Weeds in corn fields compete with corn for water, nutrients, light and space, and affect the normal growth of corn seedlings. According to statistics, weeds generally reduce corn yield by 20% to 30%, and in severe cases, reduce yield b...

AI Technical Summary

Problems solved by technology

[0006] Although oxentrazone, nicosulfuron, and atrazine can be applied alone, they all have certain defects: oxentrazone alone has unsatisfactory control effects on crabgrass and barnyardgrass, and the price is high. Good for popularization; although nicosulfuron can effectively control annual gramineous weeds such as crabgrass, foxtail, goosegrass, and barnyard grass, it is not effective against certain broad-leaved weeds such as chickweed, retroverted amaranthus, and velvetleaf. Moreover, cornfields have been using sulfonylurea herbicides for a long time, and many weeds have developed resistance to them; when atrazine is used alone, the dosage is large, and the effect on grass weeds is poor, and it is harmful to the next crops wheat and other broad-leaved plants. crops have some effect

In addition, although there are reports in the prior art that two of these three herbicides can be selected for mixed use, there are still defects such as narrow herbicidal spectrum, large dosage, and poor control effect on malignant weeds, and the prior art does not teach The technical revelation that the combination of the above three active ingredients can solve the above defects

Images