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Notopterygium root extract for alleviating damage of acetochlor to rice

A technology of acetochlor and rice, which is applied to the use of acetochlor safener on rice, and the field of extracting acetochlor safener, can solve the problems such as the safener being in the initial stage, and achieve significant detoxification effect and good compatibility. , Detoxification effect is obvious

Inactive Publication Date: 2007-07-18
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Our country is also very concerned about this topic, but the synthesis and biological activity of safeners are still in their infancy.
However, there is no report about alleviating the damage of acetochlor to rice with phytosafeners

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The following examples are further descriptions of the present invention, and the following are the results of indoor bioassays, but they should not be regarded as limiting the scope of application of the present invention in any way.

[0028] Firstly, the plant material was dried at 60°C, crushed, passed through a 40-mesh sieve (aperture 0.47mm), and stored in a refrigerator (0-4°C) for later use. Weigh 20g of plant material fine powder and place it in a 250mL Soxhlet extractor, add 200mL of 95% ethanol, reflux extraction in a water bath at 86-88°C for 8h, concentrate to obtain 20mL of extract (equivalent to dry powder 1g / mL), place in Store in the refrigerator until ready to use.

[0029] Put 200g of air-dried soil in a 13cm×8cm×5cm plastic box, and add 100mL of tap water. Rice seeds were first treated with 0.1% HgCl 2 Sterilize for 15 minutes, soak in water at 28°C for 24 hours, accelerate germination at 30°C for 12 hours, select seeds of the same size and sow them...

Embodiment 2

[0035] Field efficacy evaluation of acetochlor-induced damage to rice, taking the ethanol extract of Notopterygium as an example.

[0036] Extraction method: obtain the ethanol extract of notopterygium according to the extraction method described in the content of the invention (a)

[0037] Rice variety: Peiliangyou 288

[0038] Acetochlor: 90% Acetochlor EC

[0039] Paddy rice was sown on June 18, 2004, and when the seedlings grew to 3 leaves and 1 heart, chemical treatment was carried out. The treatment method was to spray the seedlings evenly and directionally, and spray 90% acetochlor EC40mL diluted with 40kg of water per mu. , 7 days after the application, it was found that rice had obvious phytotoxicity, and the symptoms of phytotoxicity were dwarfing of plants, underdeveloped root system, and the plant height of rice was significantly lower than that of untreated rice in the same growth period, while spraying 90% acetochlor EC40mL per mu The mixed solution of 5 kg of ...

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PUM

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Abstract

The present invention relates to one kind of notopterygium root extract for alleviating damage of acetochlor to rice. Notopterygium root material, after being stoved, crushed, sieved, is refluxed in some container with alcohol as organic solvent in water bath to extract, and the extract is obtained after concentration. The notopterygium root extract is water diluted and sprayed directly to rice or soil after applying metolachlor to protect rice from damage of acetochlor with safety to crop and no environmental pollution.

Description

field of invention [0001] The invention relates to a method for extracting the acetochlor safener from plant materials, in particular to the safener and its application method, more specifically, the present invention relates to the use of the acetochlor safener on rice. Background technique [0002] Among the chloroacetamide herbicides, acetochlor has a higher herbicidal activity and a wide range of applications. It is a high-efficiency, broad-spectrum selective pre-emergent soil treatment herbicide, which is effective for controlling annual grass weeds. At present, my country has successfully applied acetochlor and its mixture to control weeds in rice fields. However, because rice is sensitive to acetochlor, acetochlor is likely to cause phytotoxicity to young rice when used in paddy fields, so the application of acetochlor in paddy fields is strictly limited. Herbicide safeners are a class of substances that can reduce the toxicity of herbicides to crops, increase the tol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/32
Inventor 柏连阳刘承兰陈桂华
Owner HUNAN AGRICULTURAL UNIV
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