Relationship between the Occurrence of Small Brown Planthopper, Laodelphax striatellus (Fallen) (Homoptera : Delphacidae) and Barley Maturity

애멸구 다발생(多發生)과 맥류(麥類) 열기(熱期)와의 관계(關係)

  • Published : 1986.04.30


Number of small brown planthoppers, Laodelphax striatellus(F.) negatively correlated with the mean temperature of March in Korea. The low temperature of March delayed the barley growth, heading date, and maturity. Thereby, was small brown planthopper was given a good condition to feed barley, and caused abundant occurence in 1984. In addition, it was possible to predict the occurence ot small brown planthopper by quadractice equations.