Common Pests and Diseases of Vegetables in June and Key Control Techniques

No matter which month it is, there is a corresponding vegetable planting schedule, and generally more vegetables are planted in summer, but the hot climate makes management key points very important as well. So which pests and diseases are prone to occur when planting vegetables in June? What are the key control techniques?

1. Which pests and diseases are prone to occur when planting vegetables in June?

1. Control of pests and diseases of cruciferous vegetables

Continue to do a good job controlling pests such as diamondback moth, imported cabbageworm, striped flea beetle, and snails. For newly transplanted cruciferous crops with a long growing period, such as cauliflower and cabbage, pay attention to soil chemical treatment before transplanting to prevent the occurrence of pests and diseases. Beet armyworm and tobacco cutworm have entered the period of first occurrence, so pay attention to strengthening investigation of pest occurrence trends.

2. Control of pests and diseases of late-season solanaceous and cucurbit vegetables

For diseases, pay attention to controlling tomato early blight, as well as cucurbit powdery mildew, downy mildew, bacterial angular leaf spot, and so on. For insect pests, pay attention to controlling aphids, red spider mites, American serpentine leafminer, tea yellow mite, and so on.

3. Control of pests and diseases of legume vegetables

For cowpea, pay attention to controlling rust, powdery mildew, viral diseases, and so on. Around the end of the month, begin timely control of legume pod borer according to the flowering period of cowpea.

2. Key techniques for controlling pests and diseases when planting vegetables in June

1. Early blight: spray for control with agents such as fluopicolide-propamocarb types, azoxystrobin types, or dimethomorph types. Apply once every 7-10 days, for 3 consecutive applications.

2. Bacterial diseases: spray for control with 20% thiodiazole-copper suspension concentrate, 6% kasugamycin, 50% chloroisobromine cyanuric acid soluble powder, and so on, applying once every 7-10 days. Apply 3 consecutive times.

3. Downy mildew: 80% dimethomorph water-dispersible granules, 47% kasugamycin copper oxychloride wettable powder. Apply once every 7-10 days, for 3 consecutive applications.

4. Aphids: spray for control with 0.5% matrine aqueous solution, thiamethoxam types, 1.5% pyrethrin emulsion in water, or sulfoxaflor types.

5. Rust and powdery mildew: spray for control with tebuconazole types, pyraclostrobin-azoxystrobin types, or osthole types. Apply once every 7-10 days, for 3 consecutive applications.

6. Red spider mites: spray for control with pyridaben types or emamectin benzoate types.

7. Imported cabbageworm and diamondback moth: spray for control with 10% spinosad suspension concentrate, 150 g/L indoxacarb emulsifiable concentrate, 6% spinetoram suspension concentrate, 32000 IU/mg Bacillus thuringiensis wettable powder, 2 billion PIB/mL Mamestra brassicae nucleopolyhedrovirus suspension concentrate, 0.5% azadirachtin emulsifiable concentrate, 0.5% matrine aqueous solution, and 5.7% emamectin benzoate water-dispersible granules.

8. American serpentine leafminer: spray for control with cyromazine-type pesticides.

9. Legume pod borer: spray for control with indoxacarb types, lufenuron types, or emamectin types.

10. Beet armyworm and tobacco cutworm: spray for control with indoxacarb types, spinetoram types, lufenuron types, 12% emamectin-chlorfenapyr suspension concentrate, and emamectin benzoate types.

11. Striped flea beetle: spray for control with 28% phoxim-acetamiprid wettable powder or 15% pyridaben emulsifiable concentrate.

12. Snails: 6% metaldehyde granules.