A Study on Petrova cristata in Masson Pine Seed Orchard
- Received Date: 1990-10-18
- Available Online: 2012-12-04
Abstract: Petrova cristata Walsingham is an important insect pest which damaged cones and shoots of Pinus massoniana in China.This paper deals with the study on its bionomics and control measures which was conducted during 1987~1990 in Zhejiang Province.The insect has 4 generations a year in Chunan County,Zhejiang Province.Pupa overwinter in damaged shoots and cones.Daily eclosion frequency and cumulative adults of P.cristata were observed.This paper describes the ecological relationships between occurrence of the insect and age of stand,natural enemy and other insect pests of boring cones and shoots.The effective measures to control this pest are blacklight trap,spraying the insecticides of SN-851 in early spring and punch-injection of SN-851.