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Isaria fumosorosea oil suspension

A technology of rose-smoke-colored spores and oil suspension, which can be used in insecticides, biocides, animal repellents, etc., and can solve the problem of uneven distribution of active ingredients, high requirements for spray equipment, and unsuitable promotion and popularization. problem, to achieve the effects of good stability, simple preparation method and improved control effect

Inactive Publication Date: 2015-01-07
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no registration certificate for I. fumigatus at present in China. The existing formulations of fungal insecticides mainly include powder, oil, wettable powder, and suspension
Each dosage form has its own advantages and disadvantages: the preparation method of powder is simple, but the storage period of spores is short, and it must be sprayed with duster or manually sprinkled or mixed with soil. The storage period of spores is extended, but ultra-low-volume sprayers must be used for spraying, which requires high spray equipment and is time-consuming and laborious, so it is not suitable for popularization; wettable powders and suspensions are easy to use and conform to conventional medication habits, but the storage period of spores is short

Method used

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  • Isaria fumosorosea oil suspension
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  • Isaria fumosorosea oil suspension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-22

[0015] Example 1-22, the following table 1, take the components of various contents, first add the rose smoke-colored tofuspore spore powder to the vegetable oil stirred at a constant speed in the mixer, so that the spore powder is evenly distributed in the vegetable oil, and the processing process The ambient temperature is not higher than 40°C; at the same time, mix the emulsifier and stabilizer evenly in the grinder; finally mix the above two mixtures in the grinder, grind and mix evenly at a speed of 1000-1500rpm, the environment during processing The temperature is not higher than 40°C, so that the oil suspension of I. fumigatus is obtained.

[0016] Table 1 prepares the used components and content (percentage by weight) of the rose fume-colored I. japonicus oil suspension

[0017]

[0018]

Embodiment 23

[0019] Example 23, the control effect of I. fumigatus oil suspension on Bemisia tabaci

[0020] With 0.5% Tween 80 aqueous solution, the content is 5×10 6 spores / ml of spore suspension. Get the fourth instar Bemisia tabaci as the insect for testing, routinely spray after diluting the oil-suspension of I. tabaci in different times with water obtained in Example 4, and set the clear water (CKO) contrast and 5 × 10 at the same time. 6 Spores / ml of spore suspension (CK1) control. Adjust the temperature of the light incubator to 25±2°C and the relative humidity to 50±5%, observe regularly every day, record the number of dead insects in each treatment, and calculate the corrected mortality rate 7 days after application.

[0021] Table 2 The control effect of the conventional spray of I. tabaci oil suspension on Bemisia tabaci

[0022]

[0023] It can be seen from Table 2 that the corrected mortality rates on the 7th day after application were 98.0, 95.4, and 83.3, respectively...

Embodiment 24

[0024] Example 24, the control effect of I. fumigatus oil suspension on cabbage aphid

[0025] In 2013, a field efficacy test of one-time use fungi was conducted on vegetable aphids that harm eggplants in vegetable greenhouses in the suburbs of Nanjing. The oil suspension prepared in Example 13 was diluted 1000 times with water and carried out constant manual spraying. The amount of bacteria used in the diluent is: the amount of spore oil suspension contained in it reaches 20ml / mu. The relative control effect was 67.3% on the 6th day after using the bacteria, and 99.5% on the 10th day, while the population density of the cabbage aphid in the control treatment increased by 3.5 and 6.1 times respectively compared with that before using the bacteria.

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Abstract

The invention discloses isaria fumosorosea oil suspension which mainly comprises 1%-10% of isaria fumosorosea conidial powder, 50%-80% of vegetable oil or inert mineral oil, 5%-30% of an emulsifying agent and 1%-10% of a stabilizer. The isaria fumosorosea oil suspension has the advantages as follows: the storage period of isaria fumosorosea is long, and the survival rate of the isaria fumosorosea is higher than 85% after two years of storage; after the oil suspension is diluted by water, the mixture is slightly stirred to form transparent or semitransparent emulsion, the emulsification is thorough, and the stability is good; the oil suspension can be sprayed after mixed with water, and the use is convenient in the farming area; after drug application, the vegetable oil can effectively absorb ultraviolet rays, damage of the ultraviolet rays to the isaria fumosorosea is reduced, and the protection effect of the isaria fumosorosea is improved; the processing technology is simple, and the preparation method is simple and convenient; and long-term infection biological study and indoor biological assay prove that the isaria fumosorosea oil suspension has higher infection and insecticidal efficacy on pests such as bemisia tabaci, aphids and the like.

Description

technical field [0001] The invention relates to an Isaria fumosorosea preparation for preventing and controlling agricultural harmful insects and a preparation method thereof. Background technique [0002] Whitefly Bemisia tabaci is a worldwide pest, in addition to direct damage to host plants; the greater damage is the spread of plant viruses, causing the pandemic of plant virus diseases. Facility agriculture provides overwintering places and uninterrupted food sources for Bemisia tabaci, which greatly aggravates the occurrence of this pest. With the vigorous development of high-efficiency agriculture in my country in recent years, the occurrence and damage of whitefly have become more and more serious. Some greenhouses have caused serious occurrence of tomato yellow leaf curl and other viral diseases due to the damage of whitefly, and even destroyed the shed. Efficient control of Bemisia tabaci is very important to ensure the stable development of facility agriculture. ...

Claims

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Application Information

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IPC IPC(8): A01N63/04A01N25/04A01P7/04
Inventor 钟万芳李雪萍郭慧芳牛洪涛刘宝生王娜
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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