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Weeding composition containing isoxaflutole

A technology of isoxaflutole and herbicidal composition, applied in the field of pesticides, can solve the problem of low activity and achieve the effect of expanding the herbicidal spectrum

Inactive Publication Date: 2017-05-24
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drug has pre-emergence herbicidal activity, but the activity is lower than that of post-emergence

Method used

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  • Weeding composition containing isoxaflutole
  • Weeding composition containing isoxaflutole
  • Weeding composition containing isoxaflutole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment one: Indoor toxicity assay

[0041] Colby's equation is used to determine the expected herbicidal action of a mixture (Colby, S.R. Weeds 1967, 15, 20-22. Calculation of the synergistic and antagonistic response of herbicide combinations):

[0042] The following equation was used to calculate the expected activity of a mixture containing the two active ingredients A and B:

[0043]

[0044] In the formula:

[0045] A = efficacy of active ingredient A at the same concentration observed for the mixture;

[0046] B = efficacy of active ingredient B at the same concentration observed for the mixture.

[0047] When the actual observed activity of the mixture at the concentration used is greater than expected, the mixture appears to have an unexpected synergistic effect on the target weed.

[0048] Obs - Observed percent control.

[0049] Percentage control predicted by the Exp-Colby equation.

[0050] g a.i. / ha - grams active ingredient / ha.

[0051] Wang H...

Embodiment 2

[0088] Embodiment two: preparation embodiment

[0089] (1) 20% isoxaflutole 6% nicosulfuron-methyl 6% oxaflutole water-dispersible granules.

[0090] Isoxaflutole 20%, nicosulfuron 6%, oxazone 6%, fatty acid ester sulfate 6%, polycarboxylate 4%, corn flour 8%, sodium lignosulfonate 7% , diatomaceous earth to 100%; add the above materials together into the conical mixer and mix evenly, and then pulverize through the jet mill, and then mix the pulverized materials through the conical mixer. The fineness of the mixed material is 98% and passes through 600 32% isoxaflutole. Nicosulfuron-oxazone water-dispersible granules.

[0091] (2) 20% isoxaflutole 6% nicosulfuron 26% mesotrione water dispersible granules.

[0092] Isoxaflutole 20%, Nicosulfuron 6%, Mesotrione 26%, Fatty acid ester sulfate 6%, Polycarboxylate 4%, Corn flour 8%, Sodium lignosulfonate 9% , diatomaceous earth to 100%; add the above materials together into the conical mixer and mix evenly, and then pulverize th...

Embodiment 3

[0113] Example 3: Field efficacy test on controlling annual weeds in cornfields.

[0114] The drug efficacy calculation formula is as follows:

[0115]

[0116]

[0117]

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PUM

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Abstract

The invention relates to a weeding composition containing isoxaflutole. The weeding composition contain active components a, b and c, wherein the a is selected from the isoxaflutole; the b is selected from one of topramezone, mesotrione, bicyclopyrone and tembotrions; the c is selected from nicosulfuron; the weight ratio of the a to the b to the c in the composition is (0.1-30) to (0.1-30) to (0.1-30) and the balance is an pesticide adjuvant; and the preparation of the composition can be one of a water suspending agent, a dispersible oil suspending agent, water dispersible granules and wettable powder and is applicable to prevention and control of annual weeds of corn fields.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and specifically relates to a synergistic response herbicidal composition with a, b, and c as active ingredients and its application in the prevention and control of annual weeds in cornfields, wherein a is selected from isoxafen ketone; b is selected from one of oxatrazone, mesotrione, flumetrazone, and tembotrione; c is selected from nicosulfuron; the cornfield herbicide with the same mechanism of action as nicosulfuron, such as Thicarbazone-methyl, foramsulfuron-methyl, and rimsulfuron-methyl can also be used as optional items for c. Background technique [0002] Isoxaflutole (isoxaflutole) is a p-hydroxyphenylpyruvate dioxygenase inhibitor or HPPD inhibitor; its action is characterized by broad-spectrum herbicidal activity, can be used before and after emergence, and weeds appear albino After death; although its symptoms are very similar to those of carotenoid bioinhibitors, its chemical ...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01N43/80A01N41/10A01N43/40A01P13/00
CPCA01N41/10A01N43/40A01N43/80A01N47/36A01N2300/00
Inventor 王礼文陈佛祥朱刚张志伟吴泽伟
Owner GUANGDONG ZHONGXUN AGRI TECH
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