SHEHATA, W., NASR, F. (2000). LABORATORY EVALUATION AND FIELD APPLICATION OF BACTERIAL AND FUNGAL INSECTICIDES ON THE CITRUS FLOWER MOTH, PRAYS CITRI MILLER (LEP.: HYPONOMEUTIDE) IN LIME ORCHARDS IN EGYPT. Egyptian Journal of Agricultural Research, 78(3), 1105-1115. doi: 10.21608/ejar.2000.322670
WAGEH A. SHEHATA; FEEBY N. NASR. "LABORATORY EVALUATION AND FIELD APPLICATION OF BACTERIAL AND FUNGAL INSECTICIDES ON THE CITRUS FLOWER MOTH, PRAYS CITRI MILLER (LEP.: HYPONOMEUTIDE) IN LIME ORCHARDS IN EGYPT". Egyptian Journal of Agricultural Research, 78, 3, 2000, 1105-1115. doi: 10.21608/ejar.2000.322670
SHEHATA, W., NASR, F. (2000). 'LABORATORY EVALUATION AND FIELD APPLICATION OF BACTERIAL AND FUNGAL INSECTICIDES ON THE CITRUS FLOWER MOTH, PRAYS CITRI MILLER (LEP.: HYPONOMEUTIDE) IN LIME ORCHARDS IN EGYPT', Egyptian Journal of Agricultural Research, 78(3), pp. 1105-1115. doi: 10.21608/ejar.2000.322670
SHEHATA, W., NASR, F. LABORATORY EVALUATION AND FIELD APPLICATION OF BACTERIAL AND FUNGAL INSECTICIDES ON THE CITRUS FLOWER MOTH, PRAYS CITRI MILLER (LEP.: HYPONOMEUTIDE) IN LIME ORCHARDS IN EGYPT. Egyptian Journal of Agricultural Research, 2000; 78(3): 1105-1115. doi: 10.21608/ejar.2000.322670
LABORATORY EVALUATION AND FIELD APPLICATION OF BACTERIAL AND FUNGAL INSECTICIDES ON THE CITRUS FLOWER MOTH, PRAYS CITRI MILLER (LEP.: HYPONOMEUTIDE) IN LIME ORCHARDS IN EGYPT
Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
The efficacy of two commercial products of Bactospine and Biofly on Prays citri of lime trees was studied under laboratory and field conditions throughout the two seasons of 1996 and 1997. Laboratory results indicated that the pathogenic effect of Bactospein, Bacillus thuringiensis (berliner) was higher than that of Bio-fly. Baeuveria bassiana in spite of the later was applied with higher doses. Bactospine at the rate (2 ccI1 I.W.) affected the larvae more than adults, that treatment reduced no. of eggs/female by 81.70% and decreased the larval infestation by 90.08%. Bio-fly at the highest concentration (4 cc/1 LW.) reduced the infestation with the eggs, the larvae and the pupae by 65.83%. 68.45% and 72.55%, respectively. Advanced effects of bacterial and fungal treatments on the final reduction rates of P.citri infestation were recorded. Field applications revealed that two sprays with Bactospeine or Bio-fly gave good control of P.citri more than one spray. Bactospeine at the rate (2 cc/1 I.W.) and Bio-fly at the rate (2 cc/1 I.W.) reduced the infestation by (89.82-93.43%) and (76.32-78.82%), respectively. In all cases, higher doses of bioinsecticides produced potentiation effects of infestation reduction. It is recommended that two sprays of Bactospeine at a rate (2 cc/1 I.W.) is adequate effective to reduce the population of P.citri in lime orchards during the main flowering period of trees without need of chemical insecticides.
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