The most common problem is the Mealybug, which feeds on plant SAP.
粉蚧是个常见的问题，它以生石花的汁液为食。
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Scientists are planning to release 250, 000 wasps in the North-East region of Thailand to halt a mealybug infestation that threatens to destroy its lucrative cassava crop.
Cotton growers in Pakistan generally have a sound understanding of cotton production technology, but yields are limited due to the cotton leaf curl virus and mealybug.