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Herbicide composition for corn field

A herbicide composition and cornfield technology, applied in the direction of herbicides, algicides, biocides, animal repellents, etc., can solve the problems of phytotoxicity, grass weeds and broad-leaved weeds with poor control effect , to achieve the effects of improving persistence, delaying weed resistance, and reducing agricultural costs

Inactive Publication Date: 2015-02-25
MAIZE RES INST SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the technical problem that the existing cornfield herbicides have poor control effects on some grass weeds and broad-leaved weeds or phytotoxicity, and provide a three-component compound cornfield herbicide

Method used

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  • Herbicide composition for corn field
  • Herbicide composition for corn field
  • Herbicide composition for corn field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the control effect of the wettable powder of the herbicidal composition of the present invention on cornfield weeds

[0039] 20 parts of sulfentranacil, 30 parts of atrazine, 10 parts of potassium salt of isoxadifen, 8 parts of sodium lignosulfonate (dispersant), 10 parts of fatty alcohol sodium sulfate (wetting agent) and kaolin ( Filler) 22 parts are mixed, uniformly stirred and mixed in a pre-mixed stirring tank, and pulverized by an ultra-fine jet mill with 800 mesh airflow to obtain the wettable powder of the herbicidal composition of the present invention. The control effect of the wettable powder on corn field weeds (tested corn variety: Ludan 6041, corn 3-5 leaf stage, weed 2-4 leaf stage) is shown in Table 1.

[0040] The control effect of the wettable powder of table 1 embodiment 1 to cornfield weeds

[0041]

[0042]

Embodiment 2

[0043] Embodiment 2: the control effect of the suspension concentrate of the herbicidal composition of the present invention on cornfield weeds

[0044] 10 parts of sulfentranacil, 20 parts of atrazine, 5 parts of potassium salt of isoxadifen, 8 parts of sodium lignosulfonate (dispersant), 2 parts of ethylene glycol (antifreeze), xanthan gum ( Thickener) 2 parts, silicone oil (defoamer) 0.5 part, laurocapram (penetration enhancer) 1 part, sodium hydroxide (pH value regulator) 0.5 part, water (balance). First mix other additives, mix evenly by high-speed shearing, add sulfentrazone, atrazine and isoxadifen potassium salt, and ball mill in a ball mill for 2 to 3 hours, so that the diameter of the dispersed particles is 5 μm Next, a suspension formulation of the herbicidal composition of the present invention is prepared. The control effect of the suspension formulation on cornfield weeds (tested corn variety: Ludan 6041, corn 3-5 leaf stage, weed 2-4 leaf stage) is shown in Tab...

Embodiment 3

[0047] Embodiment 3: the control effect of the dispersible oil suspension concentrate of the herbicidal composition of the present invention on cornfield weeds

[0048] 15 parts of sulfentranacil, 25 parts of atrazine, 7.5 parts of potassium salt of isoxadifen, 10 parts of calcium dodecylbenzenesulfonate (emulsifier), 5 parts of fatty acid polyoxyethylene ether (emulsifier) , 5 parts of epichlorohydrin (stabilizer), 8 parts of sodium lignosulfonate (dispersant), 2 parts of ethylene glycol (antifreeze), 1.5 parts of silicone oil (defoamer), xanthan gum (thickening agent) agent) 2 parts, vegetable oil 19 parts. Grinding the balls in a glass ball mill for 2 to 3 hours, so that the diameter of the dispersed particles is 2-4 μm, and the dispersible oil suspension formulation of the herbicidal composition of the present invention is prepared. The control effect of the above-mentioned dispersible oil suspension concentrate on corn field weeds (test corn variety: Ludan 6041, corn 3-5...

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Abstract

The invention discloses a herbicide composition for a corn field. The herbicide composition comprises sulfentrazone, atrazine and isoxadifen-ethyl (or salt of isoxadifen-ethyl), wherein the weight ratio of sulfentrazone to atrazine to isoxadifen-ethyl is (1-50) to (1-50) to (1-25). The herbicide composition can be prepared into the following preparations: wettable powder, suspending agent, dispersed oil suspending agent, microemulsion, emulsion in water or water dispersible granules. The herbicide composition has a remarkable synergistic effect, and can be used for controlling graminaceous weeds, broad-leaved weeds and cyperaceae weeds including crab grass, green bristlegrass, eleusine indica, chenopodium album, dayflower, sonchus brachyotus, cephalanoplos seyetum, purslane, abutilon and the like which are difficult to control; after the herbicide composition is used, the effectiveness of all single preparations can be improved, the drug resistance of the weeds can be obviously delayed, the usage amount of the pesticide is reduced, and the agricultural cost is lowered. Isoxadifen-ethyl (or salt of isoxadifen-ethyl) is fed into the herbicide composition, so that the herbicide composition is safe for crop corns and is also used for sweet corns.

Description

technical field [0001] The invention relates to the technical field of pesticide compounding, in particular to a herbicidal composition containing sulfentrazone, atrazine and isoxadifen (or a salt of isoxadifen). Background technique [0002] Corn is an important food crop, feed crop and industrial raw material in my country. With the development of industries such as animal husbandry, food processing, wine making and biodiesel, the market demand for corn continues to increase. Weeds in corn fields are common and of various types. When corn is harmed by weeds at the seedling stage, the plants will be short and the stems will be thin and the leaves will be yellow. Some corn post-emergence herbicides have poor effect on difficult-to-control weeds such as crabgrass, foxtail, goosegrass, quinoa, commelina, lettuce, purslane, velvetleaf and cocklebur. At present, the herbicides commonly used in corn fields on the market are prone to phytotoxicity of corn, seriously affecting th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/80A01P13/00A01N43/653A01N43/70
Inventor 张成华刘铁山丁照华贾曦王志武杨菲刘强董瑞何春梅刘春晓
Owner MAIZE RES INST SHANDONG ACAD OF AGRI SCI
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