MANGOUD, A. (2006). MANIPULATION OF LEPTOMASTIX DACTYLOPL T AND CRYPTOLAEMUS MONTROUZIERI FOR AUGMENTATIVE RELEASE FOR CONTROLLING THE CITRUS MEALYBUG PLANOCOCCUS CITRION CITRUS UNDER GREEN HOUSE CONDITIONS. Egyptian Journal of Agricultural Research, 84(3), 803-813. doi: 10.21608/ejar.2006.231484
ASHRAF A. H. MANGOUD. "MANIPULATION OF LEPTOMASTIX DACTYLOPL T AND CRYPTOLAEMUS MONTROUZIERI FOR AUGMENTATIVE RELEASE FOR CONTROLLING THE CITRUS MEALYBUG PLANOCOCCUS CITRION CITRUS UNDER GREEN HOUSE CONDITIONS". Egyptian Journal of Agricultural Research, 84, 3, 2006, 803-813. doi: 10.21608/ejar.2006.231484
MANGOUD, A. (2006). 'MANIPULATION OF LEPTOMASTIX DACTYLOPL T AND CRYPTOLAEMUS MONTROUZIERI FOR AUGMENTATIVE RELEASE FOR CONTROLLING THE CITRUS MEALYBUG PLANOCOCCUS CITRION CITRUS UNDER GREEN HOUSE CONDITIONS', Egyptian Journal of Agricultural Research, 84(3), pp. 803-813. doi: 10.21608/ejar.2006.231484
MANGOUD, A. MANIPULATION OF LEPTOMASTIX DACTYLOPL T AND CRYPTOLAEMUS MONTROUZIERI FOR AUGMENTATIVE RELEASE FOR CONTROLLING THE CITRUS MEALYBUG PLANOCOCCUS CITRION CITRUS UNDER GREEN HOUSE CONDITIONS. Egyptian Journal of Agricultural Research, 2006; 84(3): 803-813. doi: 10.21608/ejar.2006.231484
MANIPULATION OF LEPTOMASTIX DACTYLOPL T AND CRYPTOLAEMUS MONTROUZIERI FOR AUGMENTATIVE RELEASE FOR CONTROLLING THE CITRUS MEALYBUG PLANOCOCCUS CITRION CITRUS UNDER GREEN HOUSE CONDITIONS
Plant Protection Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
Under green house conditions in Germany, the role of .Leptomastix dactylopii Howard (Hymenoptera: Encyrtidae) and Ctyptothemus montrouzieri (Mulsant) (Coleoptera : Coccinellidae) to reduce the population of the citrus mealybug, Manococcus cirri (Risso) (Homoptera : Pseudocooddae) on citrus trees were studied during 2001 year. Four plots were used. In the first plot (10 adults and 15 larvae/ tree) of C. montrouzieri were released on 1m June 2001. The percent reduction increased gradually from 0.7 in May (before release) to 74.0 % in October. At the same time, fifteen individuals of L. daayfopii were released in the second plot. The results indicated that the percent of parasitism gradually increased from 0.64 % (before release) in May to 35.7 % in October. In the third plot 10 adults and 15 larvae/tree of C montrouzieri were released on the first of June 2001 and then L. daay/opii was released (August 2001). The percent reduction,of infestation and percent of parasitism were calculated. After released C montrouzieri, the percent reduction of P. cirri in released plot reached 34.5 %, in August. Followed by release of L. dacty/opll in August. Percent of parasitism increased gradually to reach 98.1%.
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