Biological pesticide composition, preparation and application of biological pesticide composition in preventing and controlling vegetable phyllotreta vittata fabricius
A biopesticide and composition technology, applied in application, biocide, animal repellent, etc., to achieve good environmental compatibility, good drug effect, and good control effect
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Embodiment 1
[0046] Example 1: Indoor toxicity determination of different ratios of matrine and farnesol on cruciferous vegetable flea beetle
[0047] Insects to be tested: Phyllotreta vittata Fabricius: Collected from cruciferous vegetables that have not used chemical pesticides at the base of Northwest A&F University. After indoor propagation for one generation, healthy, consistent and well-developed adults were selected for testing.
[0048] Test method: Insect soaking method. According to the preliminary test, prepare the test agent into 5 aqueous solutions with gradient concentrations, dip the test insects one by one in the order from low to high concentration, and soak for 5 seconds. In the insect box, there are 10 heads in each box. Each concentration treatment was repeated 4 times, and water treatment was used as the control. Each treatment was placed in the insect culture room, and the larval death was checked after 24 hours, and the mortality rate and corrected mortality rate w...
Embodiment 2
[0053] Example 2: 0.7% Matrine·Farnesol Soluble Preparation
[0054] Take by weight percent matrine 0.2%, farnesol 0.5%, tea saponin 3.5% (wetting agent), calcium dodecylbenzenesulfonate 1.5% (emulsifier), ethanol 20% (solvent), The turpentine (solvent) is supplemented to 100%, each component is added into the reaction kettle in turn, and stirred evenly, that is, a 0.7% matrine·farnesol biopesticide soluble preparation is prepared.
[0055] This embodiment is applied to the prevention and control of cruciferous vegetable flea beetle. The test site is the cabbage field in the Yangling Demonstration Area of Xianyang City, Shaanxi Province. Conventional foliar spraying is used for uniform control, and the humidity of the leaves shall prevail. Matrine and farnesol preparations were dissolved in ethanol to prepare 3% matrine preparations and 5% farnesol preparations; 3% matrine preparations and 5% farnesol preparations were used as control drugs. During the spraying, the flea be...
Embodiment 3
[0059] Embodiment 3: 2.5% matrine·farnesol aqueous emulsion preparation
[0060] Weigh matrine 2.0%, farnesol 0.5%, N-methylpyrrolidone (solvent) 1.5%, sodium dodecylbenzenesulfonate (emulsifier) 3.5%, castor oil (emulsifier) by weight percentage 2.5%, the above components are completely dissolved and mixed uniformly, supplemented to 100% with deionized water, and a water-emulsion preparation of 2.5% matrine·farnesol is prepared under high-speed shearing and stirring.
[0061] Dissolve matrine and farnesol with ethanol to prepare 3% matrine preparation and 5% farnesol preparation, use 2.5% matrine·farnesol aqueous emulsion preparation as test agent, and use 3% matrine Alkaline preparations and 5% farnesol preparations were used as control agents for the prevention and treatment of pakchoi flea beetle. A total of 5 treatments were set up in the experiment, and each treatment was repeated 3 times, including a blank control. The base number of insect population in the field...
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