Abstract
The objective of present work was to compare the field efficiency of three tested pesticides, Selecron (profenofos), Marshal (carbosulfan) and Radiant (spinetoram), against larvae and adults of the tortoise beetle Cassida vittata (Vill.) inhabiting sugar beet fields in Sharkia Governorate during 2008/2009 and 2009/2010 sugar beet growing seasons. Data obtained revealed that when mortality rates were considered, Selecrone and Marshal were the most efficient compounds against larvae and adults of C. vittata. However, Radiant demonstrated a moderate toxic effect. Marshal and Selecrone showed an increase in sugar percentage (16.75 % and 14.5 % respectively) and total soluble solids (TSS %) (18 %, 17 % respectively) in the first season, while in the second season the increase in sugar percentage were (19.8 % and 19.10 % respectively), and TSS % was (22 % and 20 %, respectively). In the second season Radiant showed less percentages of sugar and (TSS) which are 16.70 % and 18.50 %, respectively.
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