How to use carbendazim for the best results? A detailed guide to the correct usage
How should carbendazim be used well? What diseases can carbendazim control? How can it be used for the best results? Please provide guidance. Carbendazim belongs to the benzimidazole class and is a highly effective, low-toxicity systemic fungicide. Because it has obvious acropetal translocation properties, in addition to foliar spraying, it is also often used for seed dressing and soil drenching; as a broad-spectrum systemic...
How should carbendazim be used well? What diseases can carbendazim control? How can it be used for the best results? Please provide guidanceCarbendazim belongs to the benzimidazole class and is a highly effective, low-toxicity systemic fungicide. Because it has obvious acropetal translocation properties, in addition to foliar spraying, it is also often used for seed dressing and soil drenching; as a broad-spectrum systemic fungicide, the agent is absorbed through seeds, roots and leaves and can be translocated within the crop, with protective and curative effects and a long residual period.
It is active against many pathogenic fungi among ascomycetes, basidiomycetes and deuteromycetes, but has no activity against oomycetes, Alternaria, long-spored Helminthosporium and bacteria. It can be used for the control of diseases of fruit trees, vegetables, flowers and field crops. Common carbendazim formulations include 25% and 50% wettable powders, 40% suspension concentrates, etc.
Diseases that carbendazim can control include: pear scab, apple brown spot, grape black pox/white rot/anthracnose, tomato early blight, cucurbit powdery mildew, sugar beet leaf spot, cucurbit fusarium wilt, cotton seedling damping-off/anthracnose, peanut black spot, stem rot, wheat fusarium head blight, rice sheath blight, sweet potato black spot, rose brown spot, clivia leaf spot, orchid anthracnose and leaf spot all have control effects. For detailed usage methods, refer to the following list:
Carbendazim usage methods:
1. Tomato early blight, cucurbit powdery mildew, sugar beet leaf spot: starting from the initial stage of the disease, use a 50% wettable powder at 800-1000 times dilution, spray once every 7-10 days for control, with 3-5 consecutive sprays, for control.
2. Control of fusarium wilt before transplanting cucumbers, watermelons and other cucurbits: use 1-1.5 kg of 50% wettable powder per mu, mix evenly with 25-30 kg of fine soil, and spread evenly in the transplanting furrow or hole; during the fruiting stage, drench the roots again with a 50% wettable powder at 1000 times dilution.
3. Cotton seedling damping-off, anthracnose: use 1 kg of 50% wettable powder, mix with 10-20 kg of water, dress 100 kg of cotton seed, pile and cover for 6 hours before sowing, or soak the seed with a 50% wettable powder at 250 times dilution for 24 hours, then air-dry and sow.
4. Peanut black spot, stem rot: use 0.5-1 kg of 50% wettable powder for 100 kg of peanut seed, mix evenly and sow.
5. Wheat fusarium head blight: at the full heading stage of wheat, spray with a 50% wettable powder at 500-1000 times dilution, and spray again after 5-7 days. Spray 75-100 kg of solution per mu each time.
6. Rice sheath blight: use a 50% wettable powder at 500-1000 times dilution, and spray once each at the late tillering stage and booting stage of rice for control.
7. Sweet potato black spot: before transplanting, use a 50% wettable powder at 3000-4000 times dilution, and soak the base of the sweet potato seedling stems for 5 minutes.
8. Flower usage method: according to the disease occurrence, spray with a 50% wettable powder at 500-1000 times dilution, which can control powdery mildew of various flowers as well as rose brown spot, clivia leaf spot, orchid anthracnose, leaf spot, etc.
9. Pear scab: at the bud break stage and after petal fall of pear trees, spray once each with a 50% wettable powder at 500 times dilution, then spray once every 7-10 days thereafter, for 2-3 consecutive times.
10. Apple brown spot: use a 50% wettable powder at 500-800 times dilution, starting from the initial stage of apple disease for spray control, and spray again after 7-10 days.
11. Grape black pox, white rot, anthracnose: from after grape leaf expansion to before fruit coloring, spray with a 50% wettable powder at 500-1000 times dilution every 10-15 days.
Carbendazim precautions:
First, the choice of carbendazim. Currently, carbendazim sold on the market is mostly wettable powder and suspension concentrate. Whichever type is chosen, compound carbendazim must not be selected, because compound carbendazim has an inhibitory effect on mycelial growth. In addition, pay attention to the product's shelf life. It is best to use one within one year of the factory date. Those exceeding one year should appropriately increase the dosage, and those completely ineffective should be prohibited from use.
Second, the method of mixing carbendazim into the material. When mixing carbendazim into the culture material, the fungicide can first be dissolved in sufficient water, then gradually mixed into the material and stirred evenly, so as to avoid spotty or patchy contamination. Control the amount of carbendazim used. If the dosage is blindly increased, it will not only increase costs but also affect mycelial growth. At the same time, a large amount of carbendazim accumulated in the fruiting bodies will cause food contamination.
Third, the contraindications of carbendazim: some edible fungi such as wood ear, nameko and lion's mane are extremely sensitive to carbendazim and should avoid its use. In addition, it should be noted that the use of carbendazim must pay attention to controlling the dosage to prevent excessive residues.
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