EFFECIENCY OF LEAVES EXTRACTS OF CASTOR BEAN PLANT AGAINST Aphis GOSSYPI/ (GLOVER) AND Trtranychus urticae KOCH ON CUCUMBER PLANT | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 3, Volume 28, Issue 5, May 2003, Page 4029-4038 PDF (802.45 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2003.243519 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| H. A. Abd EI-Wahab, | ||||
| Plant Protection Research Institute, Agricultural research Center, Dokki, Giza, Egypt, | ||||
| Abstract | ||||
| Laboratory and field experiments were conducted in Plant Protection Research Institute and at Fayoum district, Fayoum Governorate during 2001 - 2002 seasons. This study aimed to investigate the efficiency of a selective safe substances, leaves extracts of castor plant with three solvents varied in their polarity (petroleum ether) hexane and water) and plant oil (Castor seed oil) for controlling the cotton aphid Aphis gOSSYPl1 (Glover) and the spider mile Tetranychus utticee (Koch). Four concentrations of plant extracts and plant oil were used. Mortality percen ages were recorded after 1,2,3,5 and 7 days. The obtained data indicated that the mortality of the cotton ap~'d and the spider mite are increased by increasing the concentration. After one day 0 treatment the castor bean oil showed the most potency followed by petroleum et er leaves extract and water than with hexane showing the LCSO value of 14.719, 33.366, 45.561 and 45.803 on the spider mite, 1.0335, 2.3189, 2.1166 and 3.0900 on the cotton aphid, respectively. Also, after seven days of treatment castor oil showed the most potency followed by the leave extracts of castor plant with petroleum ther and hexane than with water on the cotton aphid and the spider mite. Field data indicated that castor oil treatment appeared to be the most effective against the populations of A. gossypii (Glover) and T. unics (Koch), followed by petroleum ether, hexane, and water extracts during the ~o tested seasons, respectively. The early and total yield of cucumber were increased in the tested seasons from (0.48 and 0.5 to 0.7 and 0.75) and 0.9 and 1.2 to 2.7 and 2.75) K9 of fruit I plant for castor seed oillrealment, respectively. \ | ||||
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