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Compounded herbicide for corn seedlings of postemergence

A herbicide and corn seedling technology, applied in the field of pesticides, can solve problems such as poor control effect of Cymbidium vulgaris, and achieve the effects of good application prospect, environmental friendliness, and remarkable herbicidal effect.

Inactive Publication Date: 2013-09-18
ANHUI FENGLE AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the promotion process, it was found that nicosulfuron was not effective against some broad-leaved weeds and sedges, especially Cyperus cyperi

Method used

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  • Compounded herbicide for corn seedlings of postemergence
  • Compounded herbicide for corn seedlings of postemergence
  • Compounded herbicide for corn seedlings of postemergence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Preparation of the oil suspension concentrate of the compound herbicide described in the present invention (nicosulfuron-methyl:clopyrasulfuron-methyl=1:1)

[0018] 7% nicosulfuron-chlorpyrazosulfuron oil suspension concentrate, 7% refers to the percentage of the two active components of nicosulfuron and clopyrasulfuron-methyl in the total weight. Get 3.5kg of nicosulfuron, 3.5kg of clopyrazosulfuron, 8kg of Pluronic125, 5kg of propylene glycol, 8kg of xanthan gum, 1kg of methylated vegetable oil, and make up to 100kg of water. The oil suspension is obtained through full mixing and preparation, ball milling, adjustment and packaging.

Embodiment 2

[0019] Example 2: Preparation of the wettable powder of the compound herbicide of the present invention (nicotasulfuron:clopyrazosulfuron=4:3)

[0020] 70% nicosulfuron-chlorpyrazosulfuron wettable powder, 70% refers to the percentage of the two active components of nicosulfuron and clopyrasulfuron-methyl in the total weight. Take 40kg of nicosulfuron, 30kg of clopyrazosulfuron, 6kg of dispersant NNO, 3kg of wetting agent K12, and white carbon black to make up to 100kg. Wettable powder is obtained through thorough mixing, jet milling and mixing.

Embodiment 3

[0021] Example 3: Preparation of water-dispersible granules of the compound herbicide described in the present invention (nicotasulfuron:clopyrazosulfuron=7:10)

[0022] 85% nicosulfuron-chlorpyrazosulfuron water-dispersible granule, 85% refers to the percentage of the two active components of nicosulfuron-methyl and clopyrasulfuron-methyl in the total weight. Take 35kg of nicosulfuron, 50kg of clopyrazosulfuron, 7kg of D-425, 5kg of EFW, 5kg of ammonium sulfate, 2kg of polyethylene glycol, and make up 100% of kaolin, after fully mixing, jet milling, mixing, granulation, and drying and sieve to obtain water-dispersible granules.

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Abstract

The invention provides a compounded herbicide for corn field stem leaves, wherein the compounded herbicide is capable of preventing and killing not only annual gramineae weeds in corn fields but also broad-leaf weeds and cyperus rotundus and the compounded herbicide is safe to corns and has no influence on after-reap crops. According to technical key points, the compounded herbicide is prepared from two active components, namely nicosulfuron and halosulfuron-methyl with a weight ratio of 1:(0.56-2), wherein the content of effective components in the compounded herbicide is 2-85% by weight percent. The compounded herbicide has a remarkable weeding effect and is obviously better than that of two single agents; in addition, the compounded herbicide has a prominent synergy effect on the broad-leaf weeds and the cyperus rotundus; besides, the weeds in the whole development period of crops can be prevented and killed after the herbicide is applied only for once; without influences on the after-reap crops, the compounded herbicide is ideal for the corn fields at present.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a postemergence compound herbicide for corn. Background technique [0002] Corn is not only an important food crop in my country, but also an important feed crop. In recent years, with the development of industries such as animal husbandry, food processing, wine making and biodiesel, the market demand for corn has continued to increase. In 2012, my country's corn planting area reached 39.949 million hectares, second only to rice, becoming the second largest planting crop, and there is still an increasing trend. Weeds in cornfields are common and of various types. In Huanghuaihai, summer corn weed damage occurs seriously, and the area of ​​weed damage accounts for 82% to 96% of the planting area in this area, of which the area of ​​moderate damage is 64% to 66%. Maize seedlings are most seriously damaged by weeds, and weeds have little effect on yield in the middle and late...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01P13/00
Inventor 龚国斌陈克付吴永虎管怀骥程小虎
Owner ANHUI FENGLE AGROCHEM
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