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Application of Cnidium monnieri (L.) Cuss extract in reducing drug misadventure of herbicide on crops

A technology of cnidium extract and herbicide, applied in the field of natural medicinal chemistry and pesticide

Inactive Publication Date: 2016-04-27
HUNAN AGRICULTURAL UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports about its application in agriculture. Up to now, there is no report about the effect of amide herbicides on crop damage by Cnidium extract

Method used

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  • Application of Cnidium monnieri (L.) Cuss extract in reducing drug misadventure of herbicide on crops

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Indoor test method for the extract of Cnidium mongolica to reduce the toxic effect of amide herbicide acetochlor on rice

[0027] 1) Preparation of Fructus Cnidii Extract: Grind dried Fructus Cnidii fruit and rhizome into powder, pass through a 100-mesh sieve; weigh 100 g Fructus Cnidii powder, use 95% ethanol as the extraction solvent, and extract under reflux in a water bath at 90° C. for 6 to 8 hours , to obtain 20g paste extract after concentration;

[0028] 2) Pretreatment of Fructus Cnidii extract: 0, 1.25, 2.5, 5, 7.5, 12.5, 25 mg / kg Fructus Cnidii extract and 0.025 mg / kg herbicide acetochlor were dissolved in 0.5 mL ethyl acetate, respectively, Add water to prepare a mixed solvent, then add 0.1g Tween-80 to disperse;

[0029] 3) Protective effect of Cnidium Fructus Extract on crops:

[0030] The rice used in the test was Jinyou 207, which had been sterilized by sodium hypochlorite before use, and the soil was sterilized and dry soil free from pesticides and ot...

Embodiment 2

[0037] Barrel Planting Experiment of Cnidiac Fructus Extract Detoxing Acetochlor to Rice

[0038] Acetochlor: 900g / L acetochlor EC

[0039] Rice for testing: Jinyou 207

[0040] Select a paddy field that has not been applied with acetochlor, and divide the area into 20m 2 district. The rice seeds are sown in plots after germination, and treated with pesticides when the seedlings grow to the one-leaf stage. The treatment method is poisonous soil method, and the dosage is 1g of acetochlor per mu. The phytotoxicity could be observed 4 days after the application, and the phytotoxicity was obvious after 1 week, showing that the plants were dwarfed, and the plant height was significantly lower than that of the untreated rice at the same growth stage. After 6 weeks, it can be clearly found that compared with the untreated rice at the same growth stage, the number of tillers is less. However, 1g of acetochlor and 300g / mu of Cnidium extract per mu were mixed with soil, and there wa...

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Abstract

The invention relates to new application of Cnidium monnieri (L.) Cuss extract in reducing drug misadventure of a herbicide on crops. The Cnidium monnieri (L.) Cuss extract described herein is obtained by: drying, crushing and screening fruits of Cnidium monnieri (L.) Cuss, extracting with alcohols and concentrating. By using the Cnidium monnieri (L.) Cuss extract and its compositions in crops, it is possible to protect the crops from misadventure from herbicides; the extract can be used to prepare herbicide safeners.

Description

technical field [0001] The invention belongs to the field of natural medicinal chemistry and pesticides, and specifically relates to the application of an extract of Cnidium Fructus Cnidii as a safener in protecting crops from damage caused by herbicides Background technique [0002] Amide herbicides are a class of high-efficiency, broad-spectrum selective herbicides, most of which are mainly used in dryland crops to control annual grass weeds and some broad-leaved weeds, and are currently one of the most widely used herbicides in the world . However, some of these varieties are prone to phytotoxicity to wheat, tobacco, rice, etc., especially in paddy fields. Since rice is extremely sensitive to most amide herbicides, amide herbicides are likely to cause phytotoxicity to young rice when used in paddy fields. Harm, so that the application of amide herbicides in paddy fields is strictly limited. Herbicide safeners are a class of substances that can reduce the toxicity of her...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/32A01N37/26A01P13/00A01G13/00
CPCA01N25/32A01G13/00A01N37/26
Inventor 柏连阳胡利锋周小毛罗坤刘开林刘祥英刘敏王立峰
Owner HUNAN AGRICULTURAL UNIV
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