What types of insecticides are commonly used for flowers and potted plants

Potted plants evolved from traditional Chinese garden art. As for the cultivation of ornamental plants, it originated from ancient garden landscaping, creating gardens by imitating natural mountain and water scenery. The Xia had Yaocan, the Shang had Lutai, and the Zhou had Lingtai.

1. Trichlorfon is a highly effective, low-toxicity organophosphorus preparation. It has a strong stomach-poison effect on pests and also a contact-killing effect. It kills quickly, with a field efficacy period of 4-5 days. The original solution is commonly diluted 1000-1500 times and sprayed to control pests such as rose sawfly, large bagworm moth, Atractomorpha sinensis, cotton leaf roller, inchworm, leafhopper, and black cutworm. Trichlorfon must not be mixed with alkaline agents.

2. Dichlorvos is a highly effective, low-toxicity organophosphorus preparation with strong contact-killing, fumigant and stomach-poison effects. It has a broad insecticidal range, acts quickly, and has a short efficacy period. A 50% emulsifiable concentrate diluted 1000 times or an 80% emulsifiable concentrate diluted 1500 times is commonly sprayed to control pests such as whitefly, spider mite, green plant bug, aphid, scale insect, and pomegranate noctuid. Note that it must not be mixed with alkaline agents. Dichlorvos emulsifiable concentrate volatilizes easily, so the bottle cap must be tightened after taking the pesticide. At high concentrations, it easily causes phytotoxicity to cherry blossoms and plum blossoms.

3. Omethoate has contact-killing, systemic and stomach-poison effects. It can control many pests with piercing-sucking and chewing mouthparts, and has relatively high acute oral toxicity to humans and animals. A 40% emulsifiable concentrate diluted 1000-1500 times is commonly sprayed to control pests such as scale insects, aphids, whiteflies, carmine spider mites, green plant bugs, thrips, leafhoppers, and citrus leafminer moths. It must not be mixed with alkaline agents.

4. Dimethoate is a highly effective, low-toxicity broad-spectrum organophosphorus pesticide with contact-killing, systemic and stomach-poison effects. Generally, a 40% emulsifiable concentrate diluted 1000-1500 times or a 60% wettable powder diluted 3000-5000 times is sprayed to control pests such as aphids, red spider mites, leafhoppers, leafminer moths, and whiteflies. Alternatively, 1 gram of the pesticide can be mixed with 20-40 grams of water, then used to treat 400-500 grams of seed to control underground pests such as mole crickets. Plum blossoms and cherry blossoms are sensitive to dimethoate, so it should be used with caution. It must not be mixed with alkaline agents.

5. Malathion has contact-killing, stomach-poison and fumigant effects. It has high efficacy and a broad insecticidal range. Its residual effect period is generally about one week. It has low toxicity to humans and animals and is relatively safe. A 50% emulsifiable concentrate diluted 1000-2000 times is commonly sprayed to control pests such as aphids, red spider mites, leafhoppers, thrips, scale insects, and scarab beetles. Malathion has relatively poor stability, its efficacy period is not very long, and it must not be mixed with alkaline or strongly acidic pesticides.

6. Monocrotophos has a strong contact-killing effect, along with systemic and stomach-poison effects. It has a broad insecticidal range and an efficacy period of about one week, and is relatively toxic to humans and animals. A 50% emulsifiable concentrate diluted 2000-4000 times is commonly sprayed to control pests such as aphids, red spider mites, leafhoppers, thrips, and green plant bugs. It must not be mixed with alkaline pesticides.

7. Fenitrothion is a broad-spectrum insecticide with contact-killing and stomach-poison effects, or it kills boring pests. Its efficacy generally lasts 3-4 days. Generally, a 50% emulsifiable concentrate diluted 1000-2000 times is used to control pests such as aphids, nettle grubs, leafhoppers, fruit borers, scale insects, thrips, and spider mites. It can also be applied as a 2% powder for dusting, generally at 1-3 grams per sq m. It easily causes phytotoxicity to cruciferous plants and must not be mixed with alkaline pesticides.

8. Chlordimeform is a highly effective, low-toxicity insecticide. It has antifeedant and systemic insecticidal effects on lepidopteran larvae, and relatively strong contact-killing and repellent effects on their adults. Generally, a 25% aqueous solution diluted 500-1000 times is sprayed to control pests such as stem borers, leaf roller moths, fruit borers, red spider mites, and scale insects. Chlordimeform also has a good ovicidal effect, with relatively obvious results in controlling the eggs of red spider mites, leaf roller moths and others.

9. Deltamethrin has strong contact-killing and stomach-poison effects. Its efficacy period is long, lasting up to several months, and it is relatively toxic to the skin. A 2.5% emulsifiable concentrate diluted 3000-8000 times is commonly sprayed to control nettle grubs, green moths, cotton leaf rollers, black cutworms, thrips, leafhoppers and others.

10. Tetradifon is an acaricide containing organochlorine. It has a strong contact-killing effect and has the effect of killing young mites and eggs. It can disrupt the physiological functions of adult mites, making them unable to reproduce. The residual effect period can reach about 1 month. A 20% wettable powder diluted 800-1000 times, or a 50% wettable powder diluted 1500-2000 times, is commonly sprayed to control mite pests.

11. Dicofol has a very strong contact-killing effect and acts quickly. It is effective against mite eggs, larvae, nymphs and adults, with a residual effect period of 10-20 days. A 20% emulsifiable concentrate diluted 600-1000 times or a 40% emulsifiable concentrate diluted 1000-1500 times is commonly sprayed to control various mites. It must not be mixed with alkaline pesticides.

12. Carbofuran is a broad-spectrum, low-residue insecticide with systemic and certain contact-killing effects. It can control insects with chewing and piercing-sucking mouthparts as well as nematodes. Granules of 3%, 5% and 10z5 and a 75% wettable powder are commonly used, and can control pests such as nematodes, scale insects, mites, leafhoppers, stem borers, nettle grubs, aphids, and thrips. It must not be mixed with alkaline pesticides.

13. Rosin mixture is a dark brown liquid boiled from rosin and caustic soda. It is strongly alkaline and has a contact-killing effect. It is often sprayed at 8-12 times dilution during the winter dormant period or at 10-18 times dilution during the growing season to control pests such as scale insects, whiteflies, and red spider mites. It must not be mixed with alkaline-sensitive pesticides or calcium-containing pesticides.

14. Metolcarb has contact-killing, systemic and fumigant effects, acts quickly, and its efficacy generally lasts only 2-3 days. A 25% wettable powder diluted 200-400 times, or a 20% emulsifiable concentrate diluted 1000-1500 times, is commonly sprayed to control pests such as leafhoppers, aphids, whiteflies, and scale insects. It must not be mixed with alkaline pesticides.