Compositional water-dispersion granule of herbicide HNPC-C9908 and preparation method

A technology of metthiosulfuron and herbicide, which is applied in the field of water dispersible granules compounded with methopuron and isoproturon and the field of preparation, which can solve the problem that there is no report on the development of the herbicide isoproturon water dispersible granules. and other problems, to achieve the effect of excellent control effect, reduction of agricultural cost and high suspension rate

Active Publication Date: 2009-03-04
HUNAN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the development of water-dispersible granules compounded by the herbicide isoproturon and thiosulfuron-methyl

Method used

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  • Compositional water-dispersion granule of herbicide HNPC-C9908 and preparation method
  • Compositional water-dispersion granule of herbicide HNPC-C9908 and preparation method
  • Compositional water-dispersion granule of herbicide HNPC-C9908 and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 2.1 grams of 98% thiosulfuron-methyl, 63.2 grams of 95% isoproturon, 8 grams of alkylnaphthalenesulfonic acid polycondensate, 4 grams of alkylnaphthalenesulfonate, 6 grams of ammonium sulfate, and 1 gram of polyvinyl alcohol. gram, bentonite supplemented to 100 grams, mixed, pulverized by jet mill, extruded and granulated to obtain 62% thiosulfuron-isoproturon water-dispersible granules

[0022] The product of Example 1 is light brown granules, the wetting time is 21 seconds, and the disintegration time is 49 seconds. The suspension rate is 91.7% for thiosulfuron-methyl and 93.1% for isoproturon. The sample is stored at 54°C for 14 days. It is thiosulfuron-methyl 1.63%, isoproturon 2.11%, and the suspension rate after storage is 89.4% for thiosulfuron-methyl and 90.7% for isoproturon.

Embodiment 2

[0024] Weigh 3.1 grams of 98% thiosulfuron-methyl, 63.2 grams of 95% isoproturon, 6 grams of sodium lignosulfonate, 5 grams of sodium dodecylbenzenesulfonate, 10 grams of sucrose, carboxymethyl cellulose 1 gram, white carbon black to make up to 100 grams, after mixing, pulverize through a jet mill, and granulate through boiling to obtain 63% thiosulfuron-isoproturon water-dispersible granules.

[0025] The product of Example 2 is gray-brown round particles, the wetting time is 36 seconds, the disintegration time is 35 seconds, the suspension rate is 90.1% for thiosulfuron-methyl, 91.4% for isoproturon, and the sample is stored at 54°C for 14 days. The decomposition rate was 2.13% for thiosulfuron-methyl and 3.75% for isoproturon, and the suspension rate after storage was 88.3% for thiosulfuron-methyl and 89.0% for isoproturon.

Embodiment 3

[0027] This example is an indoor bioassay experiment of thiosulfuron-methyl and isoproturon. The experimental results are as follows:

[0028] See Table 1 for the results of the herbicidal effects of thiosulfuron-methyl, isoproturon and their compound combinations on crabgrass. Among them, thiosulfuron-methyl and isoproturon were used at 0.75:20, 0.75:30, 0.75:40, 1.0:20, 1.0:30, 1.0:40, 1.5:20, 1.5:30, 1.5:40, 2 : 20, 2: 30, 2: 40 mixed in equal proportions showed additive effects on crabgrass.

[0029] Table 1 Toxicity test results of thiosulfuron-methyl, isoproturon and their compound combinations on crabgrass

[0030]

[0031] Isoproturon 20 90 Isoproturon 30 95 Isoproturon 40 100 A + different 0.75+20 98 92 -6 addition A + different 1.0+20 90 93 3 addition A + different 1.5+20 98 95 -3 addition A + different 2.0+20 99 96 -3 addition A + different 0.75+30 100 100 0 ...

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Abstract

The invention discloses a water dispersible granule which is combined by Pyrithiobac metsulfuron-methyl and soproturon of weedicide and a preparation method thereof. With Pyrithiobac metsulfuron-methyl and soproturon being active principles of the weeding, the water dispersible granule is made by adding a dispersant, a wetting agent, a disintegrant, a caking agent and a stuffing. The invention has the advantages of good dispersivity, good wettability, high suspension percentage, fast disintegration speed, easy package, easy storing, and no pollution in production and use. The invention further expands the weeding list, thereby not only being effective to the prevention and elimination of broadleaves in wheat field and being effective to the prevention and cure of grassy weed, but also reducing the farming cost, and being safe to the succession crop.

Description

technical field [0001] The invention relates to a compounded water-dispersible granule of the sulfonylurea herbicide thiosulfuron-methyl and a preparation method thereof, in particular to a compounded water-dispersible granule of thiosulfuron-methyl and isoproturon and a preparation method thereof. Background technique [0002] Sulfonylurea herbicides are currently the largest class of herbicides with unique effects in the world. They can be used to control various broad-leaved weeds and some grass weeds in farmland, woodland and non-arable land, and because of their low dosage ( 10~40g·hm^-2), low toxicity to mammals and unique herbicidal activity are widely used. The residual length of sulfonylurea herbicides in the soil mainly depends on the characteristics of the compound itself and product quality. , is also subject to factors such as dosage, soil characteristics (soil PH value, soil type), application period, spray quality, temperature and humidity. Take a cautious at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/12A01N47/36A01N47/30A01P13/00
Inventor 李涛雷满香陈力华陈九星聂思桥梁骥刘义珂任竞
Owner HUNAN CHEM RES INST
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