Developmental grade of pupae and eggs of white fly,Aleurocanthusspiniferus,in relation to its optimum control period of the pest in tea garden.
Author of the article:HAN Bao-Yu1,2
Author's Workplace：(1.Anhui Agricultural University,Hefei 230036,China; 2.Institute of Zoology,Chinese Academy of Sciences,Beijing 100080,China).
Key Words：Aleurocanthus spiniferus; pupa; egg; forecast of divisiory instar and grade; optimum control period; larva peak period
Abstract：During the spring of 2000,fifty sampling plots,each was 1 m tea row,were randomly selected at intervals of 5 days in tea garden in the Southern Anhui Province where white fly frequently occurred.The pest population on two matured leaves from upper,middle