Occurrence and control of Phyllotreta striolata(Fabricius)in Shenzhen
The occurrence of Phyllotreta striolata Fabricius were investigated in the vegetable planting base of Bao'an,Guangming and Longhua District in Shenzhen.The results showed that,the occurrence dynamic of Phyllotreta striolata(Fabricius)showed an obvious bimodal type.One peak was from October to December 2020,the average damage rate of host plant ranged from 40.4% to 50.0% and the average population density ranged from 82.7 to 121.9 adults per 100 plants.The other peak was from February to May 2021,the average damage rate of host plant ranged from 55.5% to 70.0% and the average population density ranged from 90.2 to 139.8 adults per 100 plants.The average damage rate and the population density of 100 adults per 100 plants of different host plants from high to low were as follows:Raphanus sativus>Brassica rapa ssp.pekinensis>Brassica juncea>Brassica rapa var.parachinensis.Cucumis sativus,Momordica charantia,Luffa cylindrica,Vigna unguiculata,Phaseolus vulgaris,Lactuca sativa were not found to be damaged.The number of adults dynamic showed an obvious bimodal type with yellow sticky trap method,one peak was in December 2020,the other peak was in February 2021.In August,September 2020 and June to July 2021,fewer adults were trapped.
万方数据
维普
