Pesticide prepared from plants and used for controlling persimmon tree pests
A technology for persimmon trees and plants, applied in the field of pesticides for the prevention and control of persimmon tree pests, can solve the problems of polluting agricultural products and human health hazards, and achieve the effects of low cost, broad market prospects, and wide sources of raw materials
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Embodiment 1
[0014] Preparation:
[0015] 1. Take 150g of fresh pepper leaves, 200g of tomato leaves, and 200g of tobacco leaves, and cut them into pieces;
[0016] 2. Add 3L of water and heat it to 80°C in an iron pot, add plant fragments, continue heating, stir while heating, and cook for 30 minutes;
[0017] 3. After cooling the boiled liquid naturally, filter it;
Embodiment 2
[0019] Example 2 Experiments on the control of persimmon scale by the pesticide of the present invention
[0020] The concentration of the pesticide stock solution obtained in Example 1 was diluted, and water was used as a control treatment. Each treatment was repeated 3 times, and 20 persimmon scales were treated each time. The specific method is: put the cotton scale in each culture dish, spray the medicine or clear water of the treatment concentration to it, then place it at room temperature for cultivation, and after 12 hours, check the death situation of the cotton scale under the binocular dissecting microscope (using The dissecting needle touches the persimmon scale lightly, and the person who does not move is considered dead). As can be seen from Table 1, the stock solution diluted 20 times has the best insecticidal effect.
[0021] Table 1 Control effect of different stock solution dilution concentrations on persimmon scale
[0022]
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