Compound fungicide comprising Trichoderma asperellum spore powder of and application thereof

A compound fungicide, Trichoderma aculeatus technology, applied in the direction of fungicides, applications, biocides, etc., can solve the problems of excessive residues, large amount of chemical pesticide control, etc., to achieve long-lasting, quick-acting, The effect of using less

Inactive Publication Date: 2016-06-08
江西正邦作物保护股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The amount of chemical pesticides used for the control of soil-borne diseases is large, and excessive use leads to serious excess residues

Method used

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  • Compound fungicide comprising Trichoderma asperellum spore powder of and application thereof
  • Compound fungicide comprising Trichoderma asperellum spore powder of and application thereof
  • Compound fungicide comprising Trichoderma asperellum spore powder of and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The cultivation and screening of embodiment 1 heat-resistant Trichoderma aculeatus spore powder

[0022] For the general regulations on the heat storage stability of wettable powders, FAO requires storage at (54±2)°C for 14 days or more, but when the preparation is neither suitable nor intended to be used in hot climate conditions, and high temperature has negative effects on the preparation When it is affected, you can change the test conditions, change the conditions (45±2)°C for 6 weeks or more, (40±2)°C for 8 weeks or more, (35±2)°C for 12 weeks or more, (30±2)°C for 12 weeks or more, (30±2)°C )°C for 18 weeks or more. Therefore, for the compound fungicide containing Trichoderma aculeatus spore powder, there are higher requirements on the adaptable heat storage temperature and heat storage time of the Trichoderma aculeatus spore powder.

[0023] 1) heat-storing the first-generation Trichoderma aculeatus spore powder at a temperature of 45° C. and 54° C. for 30 days...

Embodiment 2

[0031] The screening of embodiment 2 chemical fungicides

[0032] (1) Inhibitory effect of different fungicides on the growth of Trichoderma mycelium

[0033] The inhibitory effect of different fungicides on the growth of Trichoderma aculeatus mycelium was measured by the method of mycelial growth rate, and the chemical fungicides that could be compounded with Trichoderma aculeatus spore powder were screened out.

[0034] Method: The growth inhibition of Trichoderma aculeatus mycelia within the registered dosage range of each agent was determined. Firstly, each agent is prepared into a certain concentration mother solution, and the required volume is drawn according to the set concentration, and then added to the triangular flask. The triangular flask contains melted PDA medium, which is usually added at 45°C, mixed evenly and poured into sterilized petri dishes respectively. In order to make the observation more durable, a 12cm petri dish is selected. Trichoderma cultured i...

Embodiment 3

[0051] The screening of embodiment 3 surfactants

[0052] Surfactants with little effect on the activity of Trichoderma aculeatus spore powder were screened out. First, the surfactant after the air powder is mixed with Trichoderma aculeatus in a certain proportion, stored at room temperature, and the live spore rate of each treatment Trichoderma aculeatus is measured after 7 days, 30 days, 60 days, and half a year. Trichoderma aculeatus spore powder with any surfactant was used as a control.

[0053] Table 4 Surfactant Screening

[0054]

[0055] The results show that in dispersants, lignin sulfonate, naphthalene sulfonate, polycarboxylate, polynaphthalene sulfonate, anion-nonionic complex agent, in wetting agent, alkylbenzene sulfonate, alkane Sodium sulfate and sulfates have the least effect on the activity of Trichoderma spore powder.

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Abstract

The invention provides a compound fungicide comprising Trichoderma asperellum spore powder of and application thereof. The fungicide comprises the following components byweight: aculeatus, 2-30% of Trichoderma asperellum spore powder, 5-40% of a chemical fungicide, 5-10% of a surfactant and the balance of a carrier. The chemical fungicide is one of phenamacril, picoxystrobin, dimethomorph, cyazofamid, fluopicolide, hymexazol, propamocarb hydrochloride and thifluzamide; and the a surfactant comprises a dispersant and an active agent. The fungicide of the invention has the advantages of quick result, long duration and small amount, can effectively control soil-borne diseases of crops; and chemical fungicide and the surfactant in the product are repeatedly screened and have little influence on the activity of Trichoderma asperellum spore powder.

Description

technical field [0001] The invention relates to the field of biological control, in particular to a compound fungicide containing Trichoderma aculeatus spore powder and an application thereof. Background technique [0002] Soil-borne diseases, pathogenic bacteria usually cause root disease or even whole plant disease by infecting the roots, resulting in crop yield reduction or even failure, and infecting crops widely, such as: rice sheath blight, rice smut, bakanae, etc., wheat red Mildew, take-all, etc., maize leaf spot, small leaf spot, stem rot, etc., soybean root rot, cotton blight, tobacco damping-off, peanut bacterial wilt, etc., fruit tree root cancer, each The blight, damping-off, fusarium wilt, root rot, blight, sclerotinia, verticillium wilt, etc. of vegetables all survive the winter in the soil or with the help of diseased residues. Difficult to control and other characteristics. [0003] The amount of chemical pesticides used for the control of soil-borne disea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/30A01N63/04A01N37/44A01N43/40A01N43/84A01N43/50A01N43/80A01N47/12A01N47/02A01P3/00
CPCA01N25/30A01N37/44A01N43/40A01N43/50A01N43/80A01N43/82A01N43/84A01N47/12A01N63/30A01N2300/00
Inventor 黄婷魏方林徐沛东肖永良
Owner 江西正邦作物保护股份有限公司
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