The golden worm is commonly known as the knot worm, and the iron worm is the larva of the mites. The common species of golden worms are grosgrain, scutellaria, brown worm, and goldenback.
The harm of the golden worm:
Generally, adults of golden worms have minimal damage to crops, but golden worms are very harmful to crops and are the main underground pests. Because the needles of the golden worms are small, they can penetrate deep into the crop to cause harm. In addition to harming underground roots and tubers, golden worms can also damage the roots and stems of the host.
The golden worms damage the roots of the crops, resulting in reduced absorption and reduced yield. When the golden worm is seriously harmed, it will not only reduce the quality of the crop, but also affect the edible value of the crop fruit, and cause the crop to lack seedlings and ridges, resulting in a substantial reduction in production or even no harvest. The golden worms are heavier in field crops, dry land and wilderness in spring and autumn.
Prevention and treatment of golden worms:
Method 1. In the autumn or spring, the adult or larva can be turned to the surface, frozen, air-dried or preyed by natural enemies, parasitized and mechanically killed, thereby increasing the mortality of the pests. Generally, the amount of insects can be reduced by 15%-30%.
How does mint protect against golden worms?
Method 2: Applying more decomposed organic fertilizer can improve the structure of the soil, improve the permeability, provide good conditions for microbial activity, promote the robust development of vegetable roots, and enhance the insect resistance of crops. Because of the application of ammonia-containing fertilizers such as ammonium bicarbonate, ammonium humate, and ammonia in fertilizers, it can emit irritating ammonia gas, which has a certain repellent effect on pests.
Method 3: In the period of adult emergence, it can be sprayed with 800-1000 times of 100% trichlorfon, or 100-150 grams per 90 mu of insecticide per acre (666.7 square meters), add a small amount of water and mix. Fine soil 15-20 kg is made of poisonous soil and sprinkled on the ground, and combined with the depression, the poisonous soil is mixed with the soil. This kills the adult.
Method 4, seed dressing with 50% phoxim EC can eliminate larvae. The ratio of medication, water and seeds is 1:50:600. First, pour the medicine into the water, then spray the liquid on the seed, stir it evenly, then wrap it in plastic film and stuff it for 3-4 hours. Turn over 1-2 times in the middle, and the seeds can be sown after the drug is drained.
Method 5: If the golden worm has been harmed and the amount of insects is large, the liquid can be used to fill the roots. Generally, 500 times of 90% trichlorfon, or 800 times of 50% phoxim emulsifiable concentrate, or 25% carbaryl WP 800 times. 150-250 grams per plant can kill the rhizosphere larvae.
Method 6: In the prosperous period of adult worms, every 40,000 square meters of vegetable field, with a 40-watt black light, 30 cm from the ground, light basin, water in the basin and a small amount of kerosene. Turning on the lights in the evening can induce insects to drown in the water.
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