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Weeding composition for preventing and treating weeds in rice fields

A herbicide composition and technology for weeds, applied in the field of herbicides, to achieve the effects of small environmental impact, wide application period and wide application range

Active Publication Date: 2015-02-18
江苏省农用激素工程技术研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many herbicides will show additive or even antagonistic effects after compounding, and only a few will show synergistic effects

Method used

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  • Weeding composition for preventing and treating weeds in rice fields
  • Weeding composition for preventing and treating weeds in rice fields
  • Weeding composition for preventing and treating weeds in rice fields

Examples

Experimental program
Comparison scheme
Effect test

experiment example

[0027] Greenhouse potting method was used to measure the activity of oxazicloidone and indenazolone compound on weeds (in this experimental example, Polygonum syringae was taken as an example), and compared with oxazicloidone single agent and indidazolone single agent, the active components Treat with 0.1% Tween-80 in water.

[0028] Use a plastic nutrient bowl with a diameter of 9 cm, which is filled with air-dried surface soil collected from the farmland, keep the soil moist by supplying water from the bottom, sow weed seeds with full and uniform grains, and cover with 0.5 cm of soil. When the weeds grow to the 3-leaf stage, place them in a PWT-510 spray tower for spraying (the precise spraying area is 0.02m 2 , spray liquid 10mL, control spray 0.1% Tween-80 aqueous solution). 15 days after the treatment, the fresh weight of the aboveground part of the weeds was weighed, and the control effect of the fresh weight was calculated, and evaluated according to the Gowing method....

Embodiment 1

[0034] The dosage form of the herbicidal composition of the present embodiment is a wettable powder, which is composed of the following components by weight: 2 parts by weight of oxaziclozone, 25.6 parts by weight of indicazone, 3 parts by weight of Alkyl naphthalene sulfonate, 2 parts by weight of polycondensate of alkyl naphthalene sulfonic acid as a dispersant, and 67.4 parts by weight of kaolin as a solid carrier.

[0035] Among them, the above-mentioned oxaziculone and indidone all come from Jiangsu Agricultural Hormone Engineering Technology Research Center Co., Ltd.; the above-mentioned alkylnaphthalene sulfonate as a wetting agent comes from Morwet EFW of AkzoNobel; The alkylnaphthalene sulfonic acid polycondensate of the agent is derived from Morwet D-500 of AkzoNobel; the above-mentioned kaolin used as a solid carrier is derived from China Kaolin Co., Ltd.

[0036] The preparation method is as follows: according to the above formula, coarsely pulverize oxaziclozone a...

Embodiment 2～ Embodiment 5

[0038] Each embodiment is basically the same as Embodiment 1, and the differences are shown in Table 2.

[0039] Table 2

[0040]

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PUM

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Abstract

The invention discloses a weeding composition for preventing and treating weeds in rice fields. The weeding composition comprises active components including oxaziclomefone and indanofan in a weight ratio of 1:0.01 to 1:500, wherein the weight of the active components accounts for 1%-95% of the total weight of the weeding composition. The weeding composition can be in the form of wettable powder, water dispersible granules, a suspending agent, an oil suspending agent, a dried suspending agent, granules, emulsion oil, an emulsion in water, a microemulsion, a suspended emulsion, effervescent granules or effervescent tablets. The compounded weeding composition disclosed by the invention not only has an expanded herbicide controlling spectrum and is capable of preventing and eliminating grassy weeds, sedge weeds and broadleaf weeds at one time, but also has an obvious synergistic effect. The weeding composition disclosed by the invention has a wide range of suitable time for application, can be sprayed to pre-emergent soil and post-emergent stems and leaves, generates a small environmental influence and is quite safe to present and later crops, particularly high in safety to paddy.

Description

technical field [0001] The invention relates to a herbicide, in particular to a herbicide composition for controlling weeds in paddy fields. Background technique [0002] Oxazinone (CAS registration number is 153197-14-9) is a kind of oxazinone herbicide. It is safe to use and the dosage is low, about 25-50 grams of active ingredient / ha. It is effective against many broad-leaved weeds and Barnyardgrass weed control is very effective. It is generally used in rice fields after sowing and before seedlings. It can be used in direct-seeding rice fields and transplanted rice fields, and the use period is relatively limited. [0003] Indanone (CAS registration number: 133220-30-1) is an indane herbicide, which is suitable for rice, wheat, barley, lawn and other crops. It can be used before or after emergence and is safe for crops. Indoxalone can extensively control annual grass weeds and broadleaf weeds. However, the dosage of indidone is relatively large, about 150-250 grams of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/86A01P13/00A01N43/20
Inventor 孔繁蕾张慧周雪芳向家来
Owner 江苏省农用激素工程技术研究中心有限公司
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