To improve insecticidal effectiveness, these essential preparations cannot be skipped
For Chinese honey locust leaves, take 1.5 kg of fresh leaves, mash them, add 1.5 kg of water, filter out the residue, and keep the juice. For every 1 kg of juice, add 4 kg of water and spray; this can effectively control cotton aphids and red spider mites. For chinaberry leaves, take 0.5 kg of fresh leaves, mash them, add 3 kg of water, soak for half a day, and filter out the residue. Take the liquid and spray; it can control cotton aphids, red spider mites, cabbage caterpillars...
To improve insecticidal effectiveness, you must not choose pesticides blindly. Before killing pests, you must do your homework, such as gaining a corresponding understanding of the many characteristics of the pests, and then selecting the appropriate pesticide, which will certainly produce a better insecticidal effect.Determine the control pesticide according to the pest species and size. Pests can be divided into aphids and planthoppers, snout moths, spiders, beetles, and so on. Different pest species require different pesticides. For controlling aphids, it is advisable to use pesticides with strong systemic action such as methomyl and imidacloprid. For controlling leaf-eating pests such as snout moths, it is advisable to use pesticides such as diflubenzuron. When pests are young, using one pesticide has a very good effect. After the 3rd instar, two or more pesticides must be used in combination. For example, adding a certain concentration of penetrant will produce an even better effect.
Determine the application method according to the characteristics of the pest. Some pests lay eggs on the leaf surface, while others lay eggs on the underside of leaves; some prefer to feed on tender leaves, while others prefer old leaves; some are active on the upper part of the plant, while others are active on the lower part of the plant; some like to feed during the day, while others like to feed in the evening. When controlling them, use the corresponding spraying method according to the above characteristics, and you will achieve a better control effect.