Throughout UCR's history, researchers have developed more than 40 new citrus varieties and invented new techniques to help the $960 million-a-year California citrus industry fight pests and diseases.[7] In 1927, entomologists at the CES introduced two wasps from Australia as natural enemies of a major citrus pest, the citrophilus mealybug , saving growers in Orange County $1 million in annual losses.
準 是 變種 病毒, 所以 查 不出 病 囚ParaCrawl Corpus ParaCrawl Corpus