What are the latest pest and disease control methods for gromwell?
Gromwell is a perennial herbaceous plant whose roots can be used as medicine after drying. It has the effects of cooling the blood, invigorating blood circulation, detoxifying and promoting eruption of rashes, and is extremely effective for conditions such as excess heat toxin in the blood, measles, and poor eruption of macules. It can prevent measles and reduce measles symptoms. Nowadays its cultivated area is relatively large, but during the planting process it suffers from the harm of pests and diseases. Below, follow the editor to look at the control methods for gromwell pests and diseases.
1. Root rot
Root rot mainly harms the root system of the plant, generally occurring in high-temperature seasons. Because low-lying plots are prone to waterlogging and have good drainage, it is very easy to cause fungal parasitism, thereby infecting the plant. When the disease occurs, the lateral roots or root tips begin to turn black, gradually spreading to the entire root system, and finally causing the whole root to rot and the aboveground parts to wither and die.
Control methods: When planting, choose plots with high, dry terrain and good drainage. During the rainy season, do a good job of drainage measures. Once diseased plants are found, remove them promptly, take them out of the field and burn them, and irrigate the disease holes with lime powder or low-concentration ferrous sulfate water to prevent further spread of the disease.
2. Leaf spot
Leaf spot mainly harms the leaves. When the disease occurs, irregular lesions appear on the leaves, gradually expanding. In severe cases, the lesions occupy the entire leaf and also spread to the leaf stalks, and finally all the leaves of the whole plant wither and die.
Control methods: Strengthen fertilizer and water management to increase the disease resistance of the plants. When the disease occurs, promptly remove diseased leaves or diseased plants, and spray Bordeaux mixture for control, spraying once every 7-10 days for 2-3 consecutive times, with good results.
3. Pests
The main pests of gromwell are white grubs, mole crickets, cutworms, and weevils. They mainly harm the root system and seedlings of the plant, gnawing the root system or stems and leaves clean, and in severe cases causing total crop failure, with great harm.
Control methods: Before planting, combine with land preparation, plow deeply, and use strong sunlight exposure to eliminate insect eggs in the soil, or use chemicals to disinfect and sterilize. When pests break out, methods such as manual capture or poisoned bait trapping can be used to control the pests.
The above is an introduction to the pest and disease control methods for gromwell. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.