Commonly known as silkworm, adults are called beetles. There are three main types: big black, green and brown beetles. Earthworms are omnivorous pests that live in the soil and endanger them. They take roots and fruits from various crops such as beans, peanuts, sweet potatoes, etc. The peanuts are the most affected and can cause varying degrees of yield reduction. According to the observations from the station, the number of adult beetles surged from July to July. From July 1 to July 24, a total of 14,965 insects were induced, which was higher than the corresponding period of the previous calendar year. The highest daily trapping amount was 1,492. July 14.
The occurrence of earthworms has a close relationship with environmental conditions. Generally high ground, sandy soil, dry peanut fields occur, and the terrain is low, soil is sticky, soil moisture is high, and the peanut field that was not controlled in time last year is heavy. At present, peanuts in our county have entered a period of flowering and podging, which is a critical period for the prevention and control of earthworm damages. It is required that the land be cured from the end of July to the beginning of August, and serious land masses should be controlled once every 7 days.
Peanut mid-late disease mainly include: black spot, brown spot, and net blotch. It mainly damages the leaves and can infect the stems and petioles, causing the plants to grow weak, causing early defoliation, resulting in a decline in yield and quality. The recent rainy weather condition is conducive to the occurrence of peanut disease, and attention should be paid to timely prevention and treatment.
Control methods:
1. 蛴螬: (1) Liquid irrigated acupuncture point, irrigated with 50% phoxim EC at 1000 times. When irrigating, the nozzle of the sprayer is taken off, so that the directly dispensed liquid flows into the peasant hole, each hole is filled with 0.25 kg. Liquid medicine. (2) With water irrigation, mu 50% phoxim EC 1 kg or 48% chlorpyrifos EC 1 kg, poured into the field with the pouring of water.
2, black spot, brown spot: early onset, with 60% Dufu WP 1000 times, 70% thiophanate-methyl or 50% carbendazim WP 1000-1500 times liquid and other agents foliar spray .
3, net spot disease: early onset, with 72% DuPont Kelu wettable powder 800 times or 70% mancozeb WP wettablet 500 times spray.
Prevention and treatment of disease should be sprayed once every 7-14 days, even sprayed 2-3 times.
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