Prevention and Control of Brazilian Iron Cane Moth

Brazilian iron cane moth is a worldwide quarantine lepidopteran pest. All provinces and regions in the south have occurred and have spread rapidly to the north in recent years. According to the survey, the sugarcane moth damages the Brazilian iron (wood), but also damages money tree, poinsettia, iron tree, pocket coconut, Hainan iron, dragon blood tree, palm bamboo, hi bamboo, pineapple, lily, Strelitzia, goose More than 50 kinds of flowers and cash crops, such as palm wood, sugar cane, bananas and pineapple. Sugarcane Moth is a dry pest, and it is generally difficult to prevent and kill pesticides. Therefore, the pests spread rapidly and have become one of the major devastating pests in flower production. The larvae feed on the epidermis of Brazilian iron, and all the transmitting tissues are destroyed. Only the thin epidermis and xylem are left in the damaged parts. The bark and the xylem are easily separated. The harm to the mild symptoms is not easy to detect, but it is serious. Obstructs the normal growth and development of the plant, resulting in dry wood, not sprouting, and even the death of the whole plant, completely lost its ornamental value. 1. Morphological characteristics: adults are about 9 mm, brownish-brown, dark brown on the front wings, 1 black spot on the middle and trailing edges, yellow brown on the hind wings, long hairs on the trailing edge, pale yellow eggs, oval, larvae It is about 30 mm in length and has a reddish-brown head. The back of the body has rows of rectangular patches, and the body has hairy patches and brownish brown. 2. Living habits: Occurred in Guangdong and other places in southern China for about 5-6 generations in one year and 3-4 generations in northern China in one year. The larvae lived in winter in greenhouses and greenhouse potted plants. When the temperature and humidity are appropriate for the following year, the larvae climb on the flowers and damage. The larvae feed on the upper and lower part of the cortex, and sometimes enter the epidermis of the xylem. A few larvae enter the pith of the wood section from the wound, and the food becomes hollow. The larvae are about 7 years old and the larva stage is more than 1 month. The mature larvae are mostly on the upper part of the stakes during the summer, and fall in the soil during the fall. The flood season is about 15 days. Adults have nutritional habits. The eggs are scattered or concentrated into masses, and the egg period is about 4 days. The newly hatched larvae have drooping drooping silk, which is the result of damage to the cortex of the drilled wooden piles, especially for the Brazilian iron wooden piles that have suffered more than three years. 3, prevention methods: 1 strengthen quarantine. It is necessary to recognize the danger of this insect, strengthen the quarantine management of flower and wood exchanges and transport, and forbid spreading the spread of Brazilian iron wood piles with insects, and find that the insect piles should be burned in time. 2 eliminate insect sources. It is necessary to intensify greenhouse work in greenhouses and greenhouses in Brazil. It is found that overwintering larvae and earthworms in potted soil should be destroyed by spraying in time to prevent reproduction and development. 3 chemical control. To control the hatching period of each generation of eggs spray 1-2 times, you can use 20% kiquifos EC 1500 times, or 50% kill cassia EC 1000 times spray stalk. Insect pests should be promptly sprayed and prevented in the summer, especially in autumn and winter and before spring, 20% quinoline EC 1500 times, 50% phoxim EC 1000 times, 50% CASS pine EC 1000 times, and 80% DDPO EC 1000 times , 80% trichlorfon 8000 times, 40% omethoate EC 1000 times, spray once every 7 days, continuous spraying 2-3 times. Or use 1500 times of 75% phoxim EC and 1000 times of 40% methylisophos- phorus emulsion into pots, or use 1:200 times of 50% carbaryl powder to mix in the top soil of pots. Apply once every 15 days for 2-3 consecutive times to kill overwintering larvae.

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