How to prevent and control pests and diseases in Gastrodia elata? A detailed guide to practical control measures
Gastrodia elata prefers to grow in warm, humid sandy (or leaf-mold) soil, and has fairly strict requirements for temperature and humidity. However, the area along the Great Wall in northern Shaanxi lies in the mid-temperate zone, where summers are hot and dry with little rain, which is unfavorable for the growth and development of Gastrodia elata. To achieve a good harvest of Gastrodia elata, the measures that should be taken in summer management include: (1) Build a shade shed. In summer...
I. Mountain termites. Mountain termites are one of the main diseases of Gastrodia elata. Whether cultivated outdoors or indoors, it is often damaged by termites, and in severe cases both the Gastrodia elata and the fungal wood are eaten away. Control methods include: 1. Before planting, dig several trapping pits about 30 cm deep near the pit, place fresh firewood and grass in the pits, cover them with pine needles or firewood and grass, and cover them well with stone slabs. If termites are found, spray them with mirex powder to kill them. 2. Spray trichlorfon, dimethoate and other pesticides at places where termites are frequently active, or use methods such as contaminating their food and water sources to trap and kill them.II. Control of mole crickets and white grubs. 1. Organic fertilizer must be fully decomposed, preferably composted at high temperature. 2. Hang black-light lamps or kerosene lamps in the field to trap and kill adults, and place containers filled with water or kerosene under the lamps. 3. During the outbreak period, drench the roots with a 1000-fold solution of 90% trichlorfon or a 750-fold solution of 75% phoxim. 4. Fry 5 kg of bran or soybean cake until fragrant, add 0.05 kg of 90% trichlorfon, and mix with 5 kg of water to make a poisonous bait. Apply 1.5-2 kg per mu in the evening, with good results.