Occurrence and Control of Sweet Potato Moth

Occurrence and Control of Sweet Potato Moth

The sweet potato moth Herse convolvuli (Linnaeus) is a member of the order Lepidoptera. Distributed in Japan, China's Liaoning, Hebei, Henan, Shandong, Shanxi, Zhejiang, Taiwan, Guangdong and other provinces are also distributed. Mainly harmful to Convolvulaceae, Solanaceae, legumes.
First, shape recognition
1. Adult body length 43-53 mm, 100-120 mm wingspan, dark gray head, thoracodorsal gray-brown, 2 clusters of scales form "eight" shape. There are gray markings on the chest. There is a gray longitudinal band on the abdomen. There are white, red and black stripes on both sides of each section. The forewings are gray-brown and jagged with jagged lines and cloud markings. The hind wings have four dark brown stripes with dark brown hairs of white hair.
2. Egg-shaped, about 2 mm in diameter, yellowish green.
3. The mature larvae of the larvae are 60-90 mm in length, with small particles on the surface and 7 back pleats on the 1-7 sections of the abdomen. There are two kinds of body color: green head green, light yellow twill on both sides, chest light green, back line, sub-line, valve off-line yellow, abdomen 1 - 7 knots with yellow-white twill on both sides. The valve is orange-yellow, and the valve is tan-coloured. The tail is yellow-brown in color, the tip is black, and the chest is yellowish-brown. The brown head is yellow-brown, with two black vertical stripes on the head and a wide pale stripe on the thoracodorsal line. The hip plate is yellow, with light yellow diagonal strips on both sides of the 1-7 section of the abdomen. Valves and feet are black.
4. Brown, brown, body length 56 mm, long and free, dark red to dark red, fins up to the fourth abdominal section, hip thorn triangle.
Second, the occurrence of regular life history and habits: in Beijing every year 1-2 generations, South China takes place every year for 3 generations. Five to ten centimeters deep in the soil in the depth of the mature larvae overwintering. The Beijing area appeared in May or early October, with phototaxis, and eggs spawned in the back of the leaves. In southern China, larvae were found to have been harmed by the end of May. From September to October, the number of larvae was greater. Larvae ate young stems of leeks. The older larvae had a large amount of food. When the larvae were severely damaged, the leaves could be eaten, leaving only the old stalks. In South China, the egg period is 5-6 days, larval period is 7-11 days, and flood season is 14 days. Adult crouching, feeding nectar at night, mating eggs. There are more eggs laid at the luxuriant stems and leaves, and the larvae are also seriously damaged.
Third, prevention and control methods are generally sporadic, and can be eliminated manually with field management. This pest is also used to prevent other pests.

Chongqing "Terson card" Coptis, Department of Chongqing Shizhu Tujia Autonomous County specialty, China National Geographical Indications products (native geographical products). Because produced in Shizhu County, Yellow River National Forest Park, also known as "yellow Coptis." Coptis Coptis Coptis Coptis Coptis Chinensis Franch dried rhizomes, medicinal products for the "taste even", commonly used expensive Chinese medicine, Shizhu County Coptis original area, China's Coptis town, due to the high quality, was identified As "Sinopharm" "Authentic Coptis". Coptis has the characteristics of branch fertilizer, flesh thickness, length, color and high content of active ingredients. Its content of berberine (also known as berberine) is 5.20-7.69% (Chinese Pharmacopoeia 2015 edition shall not be less than 3.6% ); Coptis alkaloids (Coptis, Worenine, Palmatine, Jatrorrhizine, etc.) content below 0.5%. In addition, it contains Magnoforine and a Lumicaruleic acid, Ferulic acid.

Coptis

Heat Dampness Coptis,Selected Coptis,High-Altitude Shizhu Coptis,Wild Stone Column Coptis

Chongqing Taisun Pharmaceutical Co., Ltd. , https://www.taisuncoptis.com

Next Article
Prev Article