CN-119605787-B - Sterilization composition for preventing and treating fusarium wilt of bitter melons

CN119605787BCN 119605787 BCN119605787 BCN 119605787BCN-119605787-B

Abstract

The invention belongs to the technical field of pesticides, and particularly relates to a bactericidal composition for preventing and treating fusarium wilt of kumquats. The bactericidal composition for preventing and treating fusarium wilt of bitter melon is prepared by compounding pencycuron and carvacrol or oxathiapiprazole ethyl as active ingredients. According to the invention, a compounding strategy is adopted, the penflufen and carvacrol or fluorothiazole pyrithione are compounded, and an indoor biological activity test shows that the compounded combination shows a synergistic effect on bitter gourd fusarium wilt, and compared with a single component, the compound combination can improve the control effect on bitter gourd fusarium wilt, further effectively prevent and control the bitter gourd fusarium wilt, and can provide support for developing a novel medicament for preventing and controlling the bitter gourd fusarium wilt.

Inventors

FENG CHENGCHENG
HUANG RUKUI
JU QIANQIAN
HUANG XIONGJUAN
HUANG YUHUI
LIANG JIAZUO
CHEN XIAOFENG
LIU XINGLIAN
CHEN LINGLING

Assignees

广西壮族自治区农业科学院

Dates

Publication Date: 20260508
Application Date: 20241209

Claims (1)

1. The bactericidal composition for preventing and treating the fusarium wilt of the bitter melon is characterized in that the active ingredients of the bactericidal composition are compounded by pencycuron and carvacrol, and the compounding mass ratio of the pencycuron to the carvacrol is 1-10:40-1.

Description

Sterilization composition for preventing and treating fusarium wilt of bitter melons Technical Field The invention belongs to the technical field of pesticides, and particularly relates to a bactericidal composition for preventing and treating fusarium wilt of kumquats. Background The balsam pear is a vine plant of balsam pear in cucurbitaceae, is a vegetable crop for both medicine and food, and is popular with people because of being clear in jade, crisp in taste and rich in nutrition. As the balsam pear continuous cropping causes the deterioration of the planting soil environment, the continuous cropping obstacle is increasingly serious, and the soil-borne disease is aggravated. Fusarium oxysporum bitter gourd fusarium wilt caused by fusarium oxysporum bitter gourd specialization (Fusarium oxysporum schl.f.sp.momordicae) is a soil-borne disease with the yield and quality of serious bitter gourd, the general incidence rate is 15-25%, the incidence rate of land parcels of continuous cropping obstacle subspecies can reach 60%, a large number of dead plants appear in the field during popularity, the yield of bitter gourd is reduced, and serious economic loss is caused. To date, chemical agents remain the most effective and direct means of controlling fusarium wilt of bitter melon. The chemical agents mainly used in production include thiophanate-methyl, carbendazim, tebuconazole, chlorothalonil and the like. However, as the balsam pear fusarium wilt bacteria grow fast and have high suitability, the same chemical agent is continuously used, so that the bacteria are very easy to generate drug resistance to pesticides. Therefore, the screening and the development of the novel medicament for preventing and treating the fusarium wilt of the kumquats have important values. Penflufen (fluindapyr) is a pyrazole amide fungicide, belongs to a succinic acid dehydrogenase inhibitor fungicide, inhibits the function of mitochondria by interfering with tricarboxylic acid circulation on a respiratory electron transfer chain complex II, prevents energy generation, inhibits growth of pathogenic bacteria, finally causes death of the pathogenic bacteria, and can be used for preventing and treating various plant fungal diseases. At present, no report on the compounding of the penflufen and the carvacrol or the fluorothiazole pyrithione is found. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. Disclosure of Invention The invention aims to provide a bactericidal composition for preventing and treating fusarium wilt of kumquats, and aims to solve the problem. In order to achieve the above purpose, the present invention provides the following technical solutions: the bactericidal composition for preventing and treating fusarium wilt of bitter melon is prepared by compounding pencycuron and carvacrol or oxathiapiprazole ethyl as active ingredients. Preferably, the compounding mass ratio of the penflufen to the carvacrol is 1-10:40-1. Preferably, the compounding mass ratio of the penflufen to the oxazodone is 1-16:16-1. More specifically, the pathogenic bacteria of the fusarium oxysporum bitter gourd are specialized bitter gourd. Compared with the prior art, the invention has the following beneficial effects: (1) According to the invention, a compounding strategy is adopted, the penflufen and carvacrol or fluorothiazole pyrithione are compounded, and an indoor biological activity test shows that the compounded combination shows a synergistic effect on bitter gourd fusarium wilt, and compared with a single component, the compound combination can improve the control effect on bitter gourd fusarium wilt, further effectively prevent and control the bitter gourd fusarium wilt, and can provide support for developing a novel medicament for preventing and controlling the bitter gourd fusarium wilt. (2) Compared with single chemical agent, the bactericidal composition compounded by the invention can reduce drug resistance risk, delay the development speed of germs and reduce prevention and control cost. Detailed Description The technical scheme of the present invention is clearly and completely described below in connection with specific embodiments. 1. Indoor biological Activity assay 1.1 Test strains The stem base of the plant with the disease of the fusarium wilt of the bitter melon is collected, separated and cultured by adopting a conventional tissue separation method, and identified germs are fusarium oxysporum bitter gourd specialization (Fusarium oxysporum schl.f.sp.momordicae). 1.2 Reagents for test 97% Of penflufen, 92.5% of carvacrol and 95% of fluorothiazole pyrithione are all sold in the market. The test agents are dissolved by dimethyl sulfoxide and diluted by 0.1% Tween-80 aq