Herbicidal composition for corn field

Abstract

The invention discloses an herbicidal composition for a corn field. The composition comprises a component (a) and a component (b), wherein the component (a) is foramsulfuron, the component (b) is at least one of cyanazine, rimsulfuron, atrazine, bentazone, eluthiacet-methyl and bromoxynil octanoate; and the weight ratio of the component (a) to the component (b) is 1:1-70. The herbicidal composition for the corn field can prevent and control gramineous weeds and most broadleaf weeds, has good prevention and control effects and obvious synergy and effectively expands the weed control spectrum.

Description

technical field

[0001] The invention relates to a herbicide composition for corn fields, which belongs to the technical field of pesticides. Background technique

[0002] Corn is one of the main economic crops in my country, especially in Northeast China and Inner Mongolia, and it is also distributed in other regions of my country. Rapid and effective control of weed hazards in cornfields is one of the most important methods to increase corn yield.

[0003] The mechanism of action of foramsulfuron-methyl is the same as that of other sulfonylurea herbicides, and it is also an inhibitor of acetolactate synthase (ALS). It is mainly used in cornfields to control grass weeds, such as many important grass weeds such as The control effect of barnyardgrass, foxtail, false sorghum, goosegrass and barnyardgrass is 90-100%. Foramsulfuron-methyl has the best effect on the weed seedling stage and when the growth is most active, and the effect is best on grass weeds from the seedling st...

Examples

Embodiment 1

[0013] The weight ratio of each component of 20% foramsulfuron-flurazorin emulsifiable concentrate:

[0014] Foramsulfuron 4%,

[0015] Fluorazine 16%,

[0016] DMSO 6%,

[0017] Methanol 3%,

[0018] Calcium dodecylbenzenesulfonate 5%,

[0019] Nongru No. 600 7%,

[0020] Xylene Make up 100%.

[0021] Preparation method: put each material into the reaction kettle in turn, and make it fully mixed under the condition of stirring.

[0022] The drug effect report of 20% foramsulfuron-flurazine emulsifiable concentrate: corn 2-4 leaf stage, weeds 2-5 leaf stage application, 30 days after the application, the results of plant control effect are as follows:

[0023]

[0024] The test results show that the herbicidal effect of the mixed use of foramsulfuron-flurazine is higher than that of any single agent in the components, which is beneficial to increase the efficacy of each other, and has no antagonistic effect.

Embodiment 2

[0026] The weight ratio of each component of 7% foramsulfuron-sulfuron-methyl oil suspension:

[0027] Foramsulfuron 3%,

[0028] rimsulfuron-methyl 4%,

[0029] Organic bentonite 4%,

[0030] Nongru No. 500 10%,

[0031] Nongru No. 600 3%,

[0032] Nongru No. 100 2%,

[0033] Methyl Oleate Make up 100%.

[0034] Preparation method: put each material into the reaction kettle one by one, mix them fully under stirring conditions, and use wet crushing to make the average particle size below 5 μm to obtain the oil suspension.

[0035] The drug effect report of 7% foramsulfuron-sulfuron-methyl oil suspension: corn 2-4 leaf stage, weeds 2-5 leaf stage application, 30 days after the application, the results of plant control effect are as follows:

[0036]

[0037] The test results show that the herbicidal effect of the mixed use of foramsulfuron-sulfuron-methyl and rimsulfuron-methyl is higher than that of any single agent in the components, which is beneficial to increase t...

Embodiment 3

[0039] The weight ratio of each component of 80% foramsulfuron-atrazine wettable powder:

[0040] Foramsulfuron 2%,

[0041] Atrazine 78%,

[0042] Methylcellulose 3%,

[0043] Alcohol polyoxyethylene ether (JFC) 2%,

[0044] Kaolin tops up 100%

[0045] Preparation method: Put each material into the reaction kettle one by one, mix them fully under stirring conditions, use wet pulverization and then spray dry.

[0046] Efficacy report of 80% foramsulfuron-atrazine wettable powder: corn 2-4 leaf stage, weed 2-5 leaf stage application, 30 days after the application, the control effect results of the investigated plants are as follows:

[0047]

[0048] The test results show that the herbicidal effect of the mixed use of foramsulfuron-atrazine is higher than that of any single agent in the components, which is beneficial to increase the efficacy of each other, and has no antagonistic effect.

technical field

[0001] The invention relates to a herbicide composition for corn fields, which belongs to the technical field of pesticides. Background technique

[0002] Corn is one of the main economic crops in my country, especially in Northeast China and Inner Mongolia, and it is also distributed in other regions of my country. Rapid and effective control of weed hazards in cornfields is one of the most important methods to increase corn yield.

[0003] The mechanism of action of foramsulfuron-methyl is the same as that of other sulfonylurea herbicides, and it is also an inhibitor of acetolactate synthase (ALS). It is mainly used in cornfields to control grass weeds, such as many important grass weeds such as The control effect of barnyardgrass, foxtail, false sorghum, goosegrass and barnyardgrass is 90-100%. Foramsulfuron-methyl has the best effect on the weed seedling stage and when the growth is most active, and the effect is best on grass weeds from the seedling st...

Examples

Embodiment 1

[0013] The weight ratio of each component of 20% foramsulfuron-flurazorin emulsifiable concentrate:

[0014] Foramsulfuron 4%,

[0015] Fluorazine 16%,

[0016] DMSO 6%,

[0017] Methanol 3%,

[0018] Calcium dodecylbenzenesulfonate 5%,

[0019] Nongru No. 600 7%,

[0020] Xylene Make up 100%.

[0021] Preparation method: put each material into the reaction kettle in turn, and make it fully mixed under the condition of stirring.

[0022] The drug effect report of 20% foramsulfuron-flurazine emulsifiable concentrate: corn 2-4 leaf stage, weeds 2-5 leaf stage application, 30 days after the application, the results of plant control effect are as follows:

[0023]

[0024] The test results show that the herbicidal effect of the mixed use of foramsulfuron-flurazine is higher than that of any single agent in the components, which is beneficial to increase the efficacy of each other, and has no antagonistic effect.

Embodiment 2

[0026] The weight ratio of each component of 7% foramsulfuron-sulfuron-methyl oil suspension:

[0027] Foramsulfuron 3%,

[0028] rimsulfuron-methyl 4%,

[0029] Organic bentonite 4%,

[0030] Nongru No. 500 10%,

[0031] Nongru No. 600 3%,

[0032] Nongru No. 100 2%,

[0033] Methyl Oleate Make up 100%.

[0034] Preparation method: put each material into the reaction kettle one by one, mix them fully under stirring conditions, and use wet crushing to make the average particle size below 5 μm to obtain the oil suspension.

[0035] The drug effect report of 7% foramsulfuron-sulfuron-methyl oil suspension: corn 2-4 leaf stage, weeds 2-5 leaf stage application, 30 days after the application, the results of plant control effect are as follows:

[0036]

[0037] The test results show that the herbicidal effect of the mixed use of foramsulfuron-sulfuron-methyl and rimsulfuron-methyl is higher than that of any single agent in the components, which is beneficial to increase t...

Embodiment 3

[0039] The weight ratio of each component of 80% foramsulfuron-atrazine wettable powder:

[0040] Foramsulfuron 2%,

[0041] Atrazine 78%,

[0042] Methylcellulose 3%,

[0043] Alcohol polyoxyethylene ether (JFC) 2%,

[0044] Kaolin tops up 100%

[0045] Preparation method: Put each material into the reaction kettle one by one, mix them fully under stirring conditions, use wet pulverization and then spray dry.

[0046] Efficacy report of 80% foramsulfuron-atrazine wettable powder: corn 2-4 leaf stage, weed 2-5 leaf stage application, 30 days after the application, the control effect results of the investigated plants are as follows:

[0047]

[0048] The test results show that the herbicidal effect of the mixed use of foramsulfuron-atrazine is higher than that of any single agent in the components, which is beneficial to increase the efficacy of each other, and has no antagonistic effect.

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