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Fears Grow as Fall Armyworm Continues Invasion of Chinese Farms

by Ren Qiuyu and Chen Shuning / May 24, 2019 04:20 PM / Environment

Photo: VCG

Photo: VCG

Fall armyworms, an invasive agricultural pest, have now marched into 14 province-level regions in China, according to government news agency Xinhua.

The armyworms, a type of moth caterpillar, can cause critical damage to crops like maize, rice and sorghum. As of May 21, more than 923 square kilometers of crops have been destroyed by fall armyworms in China — an increase of more than 200 square kilometers in under two weeks.

Agricultural experts expect that the armyworms will reach northern China next month, starting an annual migration cycle that could devastate farms. Local officials as far north as eastern China’s Shandong province have issued warnings to farmers about the pests.

Some pesticides recommended by the United Nations’ Food and Agriculture Organization have been tested in China and have been effective so far, Wang Zhenying, a director at the Chinese Academy of Agricultural Sciences, told Caixin. However, he noted that populations of fall armyworm can easily become resistant to specific pesticides, which means pesticide use will need to be strictly controlled.

Hot summer weather could also bring new challenges — high temperatures and high humidity provide the perfect climate conditions for fall armyworms to reproduce, a plant protection expert interviewed by provincial newspaper Hunan Daily said.

Related: China Tells Farmers to 'Grab Crops From the Mouth' of Armyworms

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