Weeding composition containing fentrazamide and halosulfuron-methyl

A technology of chlorpyrifosulfuron and chlorpyrifosulfur, applied in the directions of herbicides, algaecides, biocides, animal repellents, etc. It can reduce adverse effects, reduce drug costs, and make up for defects and limitations.

Inactive Publication Date: 2014-03-19
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Metrazen and chlorpyrazosulfuron-methyl have certain defects and limitations when they are used alone
[0007] There is no report on the mixing and application of tetramen and closulfuron-methyl

Method used

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  • Weeding composition containing fentrazamide and halosulfuron-methyl
  • Weeding composition containing fentrazamide and halosulfuron-methyl
  • Weeding composition containing fentrazamide and halosulfuron-methyl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Biological Assay Example 1: Determination of the joint effect of the mixture of tetramethylene and cyhalofop-methyl on weeds in paddy fields.

[0023] Test material: Stellaria media (L.) Cyrillus] (seeds collected and preserved in the field). Barnyardgrass [Echinochloa crusgalli (L.) Beaw Setaria] (seeds collected in the field and preserved).

[0024] Test equipment: controllable light incubator; POTTER precision laboratory spray tower; electronic balance (sensitivity 0.1mg); micropipette gun, etc.

[0025] Test method: First weigh a certain quality of 96% tetramethylenetramide technical substance and 95% chlorpyrazosulfuron-methyl technical substance, add acetone to fully dissolve, dilute with 0.1% Tween 80 aqueous solution, and prepare single-dose mother solutions respectively , set a series of ratios according to the purpose of mixing, and set 5 to 7 concentration gradients for each ratio. Select representative sensitive weed seeds according to the single-dose herb...

Embodiment 1

[0037]

[0038] The above formula is coarsely pulverized according to the proportion, put into the mixer and mixed evenly, and then jet pulverized to obtain 32% tetrazolamide·closulfuron-methyl wettable powder.

[0039] This embodiment is used for preventing and eliminating the annual weeds in the dry paddy rice seedling field, and the 32% tetrazolamide·chlorpyrazosulfuron wettable powder dosage is 450g a.i. / ha soil treatment, and the control effect is 92.8% in 10 days after the medicine; 30% For the soil treatment of tetrazolium wettable powder at the dosage of 360g a.i. / ha, the control effect was 77.2% 10 days after application; for 15% chlorpyrazosulfuron-methyl EC at the dosage of 45g a.i. / ha for soil treatment, the control effect was 73.6% 10 days after application. The synergistic effect of 32% tetramide-chlorpyrazosulfuron-methyl wettable powder in controlling annual weeds in rice dry seedling field is obviously better than that of 3% tetramide. Methazone wettable po...

Embodiment 2

[0041]

[0042] The above formula was dry crushed, granulated, dried and sieved according to the proportion to prepare 80% tetramen-chlorpyrazosulfuron water-dispersible granules.

[0043]This embodiment is used for preventing and eliminating annual weeds in paddy rice dry seedling field, 80% tetrazolamide·chlorpyramid-methyl water-dispersible granule dosage 450g a.i. / ha soil treatment, 10 days after the medicine control effect is 96.3%; 50% tetramethylene wettable powder dosage 360g a.i. / ha soil treatment, the control effect was 68.3% 10 days after application; 15% chlorpyrazosulfuron-methyl EC dosage 45g a.i. / ha soil treatment, 10 days after application 86.3% . The synergistic effect of 80% tetramide-chlorpyrazosulfuron-methyl water-dispersible granules in controlling annual weeds in rice dry seedling field was significantly better than that of 5 % tetrazole wettable powder and 15% clopyrazosulfuron EC. Due to the improvement of the control effect of the medicament, the...

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Abstract

The invention discloses a weeding composition containing fentrazamide and halosulfuron-methyl. The weeding composition comprises a common assistant, fentrazamide and halosulfuron-methyl. A mass part ratio of fentrazamide to halosulfuron-methyl is in a range of 10: 1 to 1: 10 and preferably, the mass part ratio is 3: 1. Through compounding, fentrazamide and halosulfuron-methyl produce obvious synergism, and a use amount of the effective components of the weeding composition is obviously less than that of the single fentrazamide or halosulfuron-methyl. The weeding composition is suitable for preventing and removing annual weeds in the paddy dry-raising field. In a sowing earlier stage, when annual weeds do not sprout, the weeding composition is applied by spraying and herbicide-soil mixture spreading.

Description

technical field [0001] The present invention relates to a herbicidal composition, which is used to prevent and control annual weeds in rice dry seedling fields, using tetramethyleneimid and chlorpyrazosulfuron-methyl as active ingredients. Background technique [0002] Chemical weeding is one of the main means of controlling weeds in agriculture. In recent years, due to the large-scale single use of some herbicide varieties, many weeds have developed resistance. At the same time, when weeds occur, the grass phase is complex, not only annual and perennial weeds are mixed, herbs, vines and shrubs are mixed, but also the emergence of weeds is uneven, and the seeds, young and old weeds are staggered, so the herbicide species alone When used, all will show some defects and limitations. [0003] Tetrazol is an oxime ester compound, a broad-spectrum selective post-emergent herbicide. The mechanism of action is similar to that of sulfonylurea and imidazolone herbicides, both of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/38A01P13/00A01N47/36
Inventor 朱刚王贵新刘鹏冷忠国陈佛祥王礼文张志伟
Owner GUANGDONG ZHONGXUN AGRI TECH
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