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Trichoderma wettable powder and preparation method thereof

A technology of wettable powder and Trichoderma, applied in botany equipment and methods, fungicides, biocides, etc., can solve the problems of low spore recovery rate, short shelf life of Trichoderma chlamydospores, etc., and reduce mixing and stirring The time, to meet the large-scale production, the effect of prolonging the survival period

Active Publication Date: 2015-02-25
SHANGHAI WANLIHUA BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the spore recovery rate of Trichoderma spores in the preparation preparation process is low, and the shelf life of Trichoderma chlamydospores is short.

Method used

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  • Trichoderma wettable powder and preparation method thereof
  • Trichoderma wettable powder and preparation method thereof
  • Trichoderma wettable powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The components of the additives are: 800 mesh calcium bentonite (carrier) 40wt%, sodium lignosulfonate (dispersant) 2wt%, vitamin C 0.5wt‰, xanthan gum (adhesive) 0.5wt‰, SDS (wetting agent) agent) 2wt%. Put each component into a grinder, pulverize and mix to prepare the auxiliary agent, and set aside.

[0045] Take Trichoderma chlamydospores and carry out liquid fermentation for 7 days to obtain Trichoderma liquid; mix Trichoderma liquid with diatomaceous earth at a volume ratio of 10:1, and add glycerin and dextrin (original powder protective agent); put the mixture in Vacuum dry at 30°C for 4 hours until the water content is 22%. After drying, the original powder of Trichoderma is obtained. Wherein, the content of dextrin in the former powder of gained Trichoderma is 5wt%, and the content of glycerol is 4wt%, and the content of spore is 3.8 * 10 8 pcs / g.

[0046] Finally, the original powder of Trichoderma and additives were crushed and mixed in a low-temperature ...

Embodiment 2

[0055] The components of the additives are: 800 mesh calcium bentonite (carrier) 40wt%, sodium lignosulfonate (dispersant) 2wt%, vitamin C 0.5wt‰, xanthan gum (adhesive) 0.5wt‰, SDS (wetting agent) agent) 2wt%. Put each component into a grinder, pulverize and mix to prepare the auxiliary agent, and set aside.

[0056] Take Trichoderma chlamydospores and carry out liquid fermentation for 7 days to obtain Trichoderma liquid; mix Trichoderma liquid with diatomaceous earth at a volume ratio of 10:1, and add glycerin and dextrin (original powder protective agent); put the mixture in Vacuum dry at 30°C for 4 hours until the water content is 22%. After drying, the original powder of Trichoderma is obtained. Wherein, the content of dextrin in the former powder of gained Trichoderma is 8wt%, and the content of glycerol is 6wt%, and the content of spore is 3.8 * 10 8 pcs / g.

[0057] Finally, the original powder of Trichoderma and additives were crushed and mixed by low-temperature ai...

Embodiment 3

[0059] The components of the additives are: 800 mesh calcium bentonite (carrier) 45wt%, sodium lignosulfonate (dispersant) 2.5wt%, vitamin C 0.3wt‰, xanthan gum (adhesive) 0.4wt‰, SDS (moisturizer) Wet agent) 2.2wt%. Put each component into a grinder, pulverize and mix to prepare the auxiliary agent, and set aside.

[0060] Take Trichoderma chlamydospores and carry out liquid fermentation for 6 days to obtain Trichoderma liquid; mix Trichoderma liquid with diatomaceous earth at a volume ratio of 8:1, and add glycerin and dextrin (original powder protective agent); put the mixture in Vacuum dry at 30°C for 4 hours until the water content is 20%. After drying, the original powder of Trichoderma is obtained. Wherein, the content of dextrin in the former powder of gained Trichoderma is 4wt%, and the content of glycerol is 2wt%, and the content of spore is 3.2 * 10 8 pcs / g.

[0061] Finally, the original powder of Trichoderma and additives were crushed and mixed in a low-tempera...

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Abstract

The invention provides a Trichoderma wettable powder and a preparation method thereof. The method comprises the following steps: mixing Trichoderma liquid, a filling material and a raw powder protective agent, drying to obtain the Trichoderma raw powder, crushing an auxiliary agent containing a carrier, a dispersant, vitamin C, a sticker and a wetting agent and mixing; mixing the Trichoderma raw powder and the auxiliary agent, and drying to obtain the Trichoderma wettable powder. The method of the invention employs liquid fermentation, can be directly used for preparing the wettable powder; dextrin and vitamin C are added as the protective agents, viability stage of Trichoderma can be protected and prolonged under room temperature and drying condition, loss rate of Trichoderma is greatly reduced, shelf period of the product is increased; the raw powder and the auxiliary agent are separately prepared, Trichoderma spore mixing and stirring time can be reduced, Trichoderma spp loss rate is greatly reduced; the materials of the auxiliary agent are chemical substances, so that large scale production can be realized, and Trichoderma survival rate is not influenced.

Description

technical field [0001] The invention relates to a wettable powder, in particular to a trichoderma wettable powder and a preparation method thereof. Background technique [0002] Wettable powder (WP) is a pesticide preparation that contains the original drug, carrier (filler), surfactant (wetting agent, dispersant, etc.), auxiliary agent (stabilizer, etc.) and is pulverized into fine particles. This formulation forms a stable sprayable suspension when diluted with water to field concentrations. [0003] Wettable powder is mainly used for spraying with water, not for direct powder spraying. Its advantage is that it does not require organic solvents during processing, which not only saves organic solvents but also reduces environmental pollution. Due to the addition of wetting agents, adhesives, etc., it has strong adhesion on crops, is resistant to rain and wind, and is convenient for packaging, storage, and transportation. Its control effect is better than that of the same ...

Claims

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Application Information

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IPC IPC(8): A01N25/14A01N63/04A01N25/22A01P3/00A01P1/00
Inventor 旷文丰何辰亦王承芳陈娟谢俊毛伟力
Owner SHANGHAI WANLIHUA BIOTECH
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