Autumn military insect 0613 "Insecticidal War Handbook! Appearance, fecal bite marks, experts: autumn army insects are prone to drug resistance. "use medicine only when you see the worm."

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The autumn army insect, which makes farmers pale at the smell, has spread to Taiwan. Its main host plants include 76 families and 353 species. It mainly damages corn, rice, sorghum, cotton, cruciferous, cucurbitaceae, solanaceae and other economic crops. It may also be found in non-agricultural areas such as schools, vegetable gardens, military plants, golf courses and other places.

Following the discovery of autumn armyworm in Taiwan on the 8th, Miaoli Tongxiao, Ilan Toucheng (10th) and Chiayi Lucao (10th), two more confirmed cases were confirmed today (13th). They came from corn in Luye, Taitung, and corn shoots in Datong, Ilan. They prefer to eat corn and rice. The "Autumn Armyworm Disaster Emergency Response Team" has received a total of 78 cases from the public, distributed in Yunlin, Taichung, Hsinchu and other counties, waiting for expert morphological identification.

How to grasp the key 14-day "golden culling period" in China, should farmers use drugs in advance? How to carry out physical control? What are the natural enemies of autumn army insects?

Young larvae and eggs will flock together and can be collectively eliminated in time

A generation of autumn army worm is about 30 days, from larva to adult about 10 days, if the climate is hot, it may be shortened to 7 days, so before it has the ability to fly adult, it is the best time to eliminate. Xu Rujun, professor of entomology at Taiwan University, said that the most troublesome part of this insect is that it can fly very well. The adults of autumn march can fly 100 kilometers a night and 1,000 kilometers in their lifetime. The host range is wider than that of Spodoptera litura and Spodoptera exigua. Therefore, it should be cleaned up at one time when eggs and larvae are concentrated.

She further discussed epidemic prevention methods from the growth cycle of autumn armyworms: autumn armyworms prefer to lay eggs in the lower leaves, hatch larvae after 1-3 days, belong to the first to second instars within 3-6 days, larvae usually act collectively, especially like to eat the most tender parts of the leaves-the new tender leaf growth point at the junction with the stem, the leaves will appear obvious holes and gaps, similar to the chewing marks of leaf moths.

(To read more about the Fall Armyworm news, click here)

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