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Bactericidal composition for preventing and treating peanut leaf spot and application thereof, and bactericide

A technology for peanut leaf spot and fungicide, which is applied in the field of fungicides and bactericidal compositions for preventing and controlling peanut leaf spot, can solve the problems of low control effect and lag in research and development of pesticides for preventing and controlling peanut leaf spot, and achieves high control efficiency, The effect of avoiding drift phytotoxicity and improving the control effect

Active Publication Date: 2020-04-10
JILIN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, there are 135 pesticides for peanut leaf spot control that have been registered in my country. Among them, the pesticides developed in the 1980s have low control effects and large residues: such as chlorothalonil, thiophanate-methyl, mancozeb, mancozeb, etc. Zinc, carbendazim, sulfur and other preparations or their compound preparations accounted for 86 items, and none of them were biological pesticides
Compared with the biological control agents for rice blast, such as biopesticides kasugamycin and Jinggangmycin, the research and development of peanut leaf spot disease control agents is still relatively lagging behind, especially in the research and development of biopesticides.

Method used

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  • Bactericidal composition for preventing and treating peanut leaf spot and application thereof, and bactericide
  • Bactericidal composition for preventing and treating peanut leaf spot and application thereof, and bactericide
  • Bactericidal composition for preventing and treating peanut leaf spot and application thereof, and bactericide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Composite Proportion Verification Test

[0043] Pyraclostrobin and Gongzhulingmycin were used to set 8 compounding ratios for peanut leaf spot pathogens, and 5 gradients were set for each ratio. The control drugs were pyraclostrobin and Gongzhulingmycin, and each single dose was also 5 A gradient was set, and a blank control was set, and each treatment was repeated 4 times. When the mycelium of the blank pathogenic bacteria covers 2 / 3 of the petri dish, investigate the diameter of the colony, calculate the inhibition rate of each treatment on the pathogenic bacteria, and then calculate its linear regression equation, EC 50 , EC 90 , according to the Walley method, calculate the synergistic coefficient SR, and finally measure whether the joint effect between pyraclostrobin and Gongzhulingmycin is synergistic, and then determine the optimal ratio. Synergistic evaluation criteria are: SR1.5 is a synergistic effect.

[0044] The results of data statistics and a...

Embodiment 2

[0049] Embodiment 2 dosage form comparative test

[0050] On the basis of the ratio test of the two, the present invention screens wettable powders, suspending agents, water-dispersible granules, and dispersible oil-suspending concentrates with suspension rate and thermal storage stability of medicaments as indicators. The screening results are based on water The two dosage forms of disperse granule and suspension concentrate are ideal, and the bactericidal activity against pyraclostrobin · Gongzhulingmycin is the best. Reduce pollution in production, transportation, and use, increase safety, and do not choose emulsifiable concentrate formulations. In terms of dosage form screening, the suspension rate and stability test results are shown in Table 2, and the heat storage stability was determined according to the national standard.

[0051] Table 2 activity and thermal storage stability determination table

[0052] dosage form Suspension rate% thermal storage sta...

Embodiment 3

[0068] Embodiment 3 drug effect test

[0069] The effect of different doses of the compound preparation of pyraclostrobin and Gongzhulingmycin obtained in Example 2 on the control effect of peanut leaf spot and the impact on peanut yield are shown in the table below, and each treatment was sprayed three times. 7 days apart, 7 days after the last spraying, the incidence index of leaf spot disease of each treatment was investigated, and then the respective control effects were calculated, and the yield was measured after autumn.

[0070] The test results are shown in Table 5. The test results show that 27% pyraclostrobin · Gongzhulingmycin SC has a higher control effect on peanut leaf spot. Compared with the commonly used drug 36% thiophanate-methyl, the chemical More than 40% pesticides, compared with a single dose of 25% pyraclostrobin, more than 25% of chemical pesticides can be reduced. Compared with the blank control, the average yield was increased by more than 5%. In ad...

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Abstract

The invention relates to the technical field of research and development of combined application of biopesticides and chemical pesticides, in particular to a bactericidal composition for preventing and treating peanut leaf spot, application of the bactericidal composition and a bactericide. The bactericidal composition is composed of pyraclostrobin and Gongzhulingmycin in a mass ratio of (6-9): 1.According to the invention, pyraclostrobin and Gongzhulingmycin are compounded to achieve a synergistic effect; the combined action of pyraclostrobin and Gongzhulingmycin also expands a prevention and treatment range; and besides main effect on prevention and treatment of leaf spot, the bactericidal composition has better prevention and treatment effects on some bacterial diseases and a promotioneffect on stress resistance of peanuts.

Description

technical field [0001] The invention relates to the technical field of joint application research and development of biological pesticides and chemical pesticides, in particular to a fungicidal composition for preventing and treating peanut leaf spot, its application and a fungicide. Background technique [0002] Peanut has a long history of cultivation in my country and is an important economic and oil crop. Due to its rich nutritional value and wide range of uses, it has a strategic position in the national economy and people's livelihood. Especially in the adjustment of the planting industry structure in Northeast China, it is the main crop that rotates with corn, and its characteristics of tolerance to drought and barrenness make its planting area increase year by year. On the other hand, with the increase of planting scale, the frequency and degree of damage of peanut diseases are also increasing. At present, leaf spot disease is the most widespread and most influentia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/24A01N63/28A01P3/00
CPCA01N47/24A01N63/00
Inventor 王义生张伟王义山李启云杜茜付立范李雪梅李锋鞠青春王立辉王正国孟灵敏贾娇王伟
Owner JILIN ACAD OF AGRI SCI
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