The Control Effect of Encarsia formosa Combined with Yellow Sticky Trap to Bemisia tabaci on Tomatoes in Green House
会议名称：《International Symposium on Mass Production and Commercialization of Arthropod Biological Control Agents》
会议日期：2011年
学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治]
关 键 词：Encarsia formosa parasitic Bemisia tabaci tomatoes yellow sticky trap control effect
摘 要：Aims of this study is to discuss the combination effects of Encarsia Formosa and yellow sticky trap in the control of Bemisia tabaci on tomatoes in green *** Formosa was released once after every 5-7days and lasted for 5 times under controlled condition,which the amount of Bemisia tabaci adults are less than 3 heads/plant,and the larvae are less than 2 heads/*** release amount of Encarsia Formosa each time is about 5000 heads/*** average emergence rate of Encarsia Formosa is approximately 84.35%,and the highest parasitic rate is 73%.It is about 35 d between the initial release date and the foundation of population,and it took about 2 months to take over the Bemisia tabaci *** investigation of vertical distribution indicated that,Encarsia Formosa mainly located on the middle and low parts of the plant during the early stage of tomato growing,and moved to the middle and top parts of the plant in the late stage of tomato growing along with the movement of Bemisia *** regularity of horizontal distribution is high -low-high -low-high from east to west(from door to inside).The release of Encarsia Formosa combined with yellow sticky traps showed remarkable effect in the control of *** on tomatoes in green *** yellow sticky trap decreased adults of B. tabaci significantly but showed very little effect in trapping of Encarsia Formosa.