Erigeron annuus extract, and application thereof in prevention of crop blight and/or early blight

A technology for extracts and crops, applied in the field of new pesticides and preparation, can solve problems such as low utilization rate

Active Publication Date: 2016-04-13
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is safe and non-toxic, and often grows in roadside wilderness or hillside wasteland. It is quite rich in resources, and its utilization rate is very low at present.

Method used

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  • Erigeron annuus extract, and application thereof in prevention of crop blight and/or early blight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Collect one-year-old plants, dry to constant weight, and then pulverize. Microwave extraction was carried out with a time of 6 minutes, a solid-to-liquid ratio of 1:59, a temperature of 59°C, and a power of 500W to obtain an extract of the annual plant. The inhibition rate of bacteria was 26.06%. Discard the precipitate after the centrifugation of the annulus microwave extract, concentrate by rotary evaporation, extract with ethyl acetate, extract by rotary evaporation, and dry in vacuo to obtain the ethyl acetate extract of annulus, the 6mg / ml ethyl acetate extract solution is suitable for The inhibition rate of Fusarium wilt of cucumber was (42.60±1.18)%.

Embodiment 2

[0026] Collect one-year-old plants, dry to constant weight, and then pulverize. Microwave extraction was carried out at a time of 6 minutes, a solid-to-liquid ratio of 1:55, a temperature of 65°C, and a power of 500W to obtain the extract of P. annua, and the inhibition rate of 0.01g / ml extract against Fusarium wilt of cucumber was 21.17%. Discard the precipitate after the centrifugation of the annulus microwave extract, concentrate by rotary evaporation, extract with ethyl acetate, extract by rotary evaporation, and dry in vacuo to obtain the ethyl acetate extract of annulus, the 6mg / ml ethyl acetate extract solution is suitable for The inhibition rate of Fusarium wilt of cucumber was (30.97±1.37)%.

Embodiment 3

[0028] Collect one-year-old plants, dry to constant weight, and then pulverize. Microwave extraction was carried out at a time of 6 minutes, a solid-to-liquid ratio of 1:60, a temperature of 60°C, and a power of 500W to obtain the extract of P. annua. The inhibitory rate of 0.01g / ml of the extract to Fusarium wilt of cucumber was 25.89%. After centrifuging the microwave extract of Annua barbata, the precipitate was discarded, concentrated by rotary evaporation, extracted with ethyl acetate, and the solution obtained by the extraction was rotary evaporated, and dried in vacuum to obtain the ethyl acetate extract of Annea spinach, extracted with 6mg / ml ethyl acetate The inhibitory rate of the compound to Fusarium wilt of cucumber was (42.60±1.18)%.

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Abstract

The invention relates to a novel pesticide, in particular to an erigeron annuus extract, and application thereof in prevention of crop blight and / or early blight. The invention firstly aims to provide the erigeron annuus extract and the application thereof in prevention of crop blight and / or early blight. The invention secondly aims to provide an erigeron annuus-source bactericide. The invention thirdly aims to provide a preparing method of the erigeron annuus-source bactericide. The erigeron annuus-source bactericide has prevention actions for both early blight and blight, and is environment-friendly, economic, efficient and non-toxic and reliable.

Description

technical field [0001] The invention relates to a novel pesticide and a preparation method thereof, in particular to an extract of a year's cape and its application for preventing and treating crop wilt and / or early blight. Background technique [0002] Early blight and Fusarium wilt can occur throughout the growth and development of crops, and are two devastating plant fungal diseases in modern agriculture. Among them, tomato early blight caused by tomato early blight can cause plant leaf fall, fruit drop, broken branches, and yield reduction by 35% to 68%; Difficult to control, the annual incidence rate is 10% to 30%, and the year of severe disease can reach 80% to 90%. For these two diseases, the method widely used at present is to spray chemical fungicides such as carbendazim and thiophanate-methyl before or at the beginning of the onset. However, these chemical fungicides are difficult to degrade and easy to remain. With long-term and large-scale use, they will spread...

Claims

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Application Information

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IPC IPC(8): A01N65/12A01P3/00
CPCA01N65/00A01N65/12
Inventor 徐丽珊陈佳静施恩琪邵翌雪王利枝
Owner ZHEJIANG NORMAL UNIVERSITY
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