Planting Rehmannia glutinosa: what are the diseases and insect pests of Rehmannia glutinosa?

What diseases and insect pests does rehmannia have? How to prevent it? Please help introduce friends. Dihuang diseases and insect pests include soybean cyst nematode disease, red spider, pseudoleopard butterfly, aphid, black tiger, mole cricket and beetle. Detailed control methods can be listed as follows: 1. Prevention and control of soybean cyst nematode disease: 1. Agricultural measures rotation, rotation with cereal crops for 1~2 years; increase phosphorus fertilizer, timely irrigation. 2. Pesticide control: 3% carbofuran granules, 2~4kg per mu, applied in the sowing ditch, covered with soil after application, or 3% isosaliphos methyl granules, 5~ 6kg per mu, applied in the ditch, covered with soil after application. 2. Control methods of red spiders: occur between June and July. It can be sprayed twice with 8% Lesben 1000~2000 times solution or 20% chlorphenamine with high and low toxicity. Third, the control of Parasiparodon: 1, clean the countryside;2, young stage with 90% trichlorfon 800 times liquid spray kill. IV. Control of aphids: spray aphids with 80% dichlorvos 1500~2000 times solution. 5. Prevention and control of underground pests such as ground tiger, mole cricket and beetle: 80% trichlorfon wettable powder 100g plus a small amount of water, mixed with fried wheat bran or bean cake 5kg, sprinkled in the evening to trap and kill. Click for more rehmannia cultivation technology Click for more herbal cultivation technology