%0 Journal Article
%T Field efficacy of emulsifiable suspensions of Beauveria bassiana conidia for control of Myzus persicae population on cabbage<br>球孢白僵菌分生孢子乳悬剂对甘蓝上桃蚜的田间控制效果
%A YING Shenghua
%A FENG Mingguang
%A XU Shoutao
%A MA Zaibo
%A <br>应盛华
%A 冯明光
%A 许寿涛
%A 马再波
%J 应用生态学报
%D 2003
%I 
%X The conidial powder of Beauveria bassiana SG8702 produced using a diphasic fermentation technology was formulated into emulsifiable suspension I (EI-I, > 10(10) conidia.ml-1) and ES-II, which resulted from adding 1% (W/V) of imidacloprid 10% WP to the ES-I. Three dilutions (10(7), 10(6), and 10(5) conidia.ml-1 of each were sprayed onto cabbage plants for control of the green peach aphid Myzus persicae population in field plots in Kunming, Yunnan during July 2001. Each dilution and a water spray as control were replicated three times. During a 28 d period of sampling at 3 or 4 d intervals, spray of the ES-II at 10(7) conidia.ml-1 controlled the increase of the aphid population by > 90% consistently from day 7 after spray. The efficacy for the ES-I at the same concentration reached 85% on day 7 after spray, exceeded 70% in the following two weeks, but declined to 64.4% on day 24 and 52.6% on day 28. At the lower concentrations sprayed, both suspensions significantly suppressed the increase of M. persicae population, but the ES-II resulted in higher efficacy than the ES-I. Local summer weather with mild temperature and frequent rainy days was favorable to the use of the formulations for aphid control.
%K Beauveria bassiana
%K Emulsifiable conidia suspensions
%K Myzus persicae
%K Field trial
%K Aphid control<br>球孢白僵菌
%K 孢子乳悬剂
%K 桃蚜
%K 田间试验
%K 防治效果
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=D874B07DB69074E5&yid=D43C4A19B2EE3C0A&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=6313C162FF75889A&eid=E5D85F291CED2DA6&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=15&reference_num=19