Comparative study of Cucurbit fly: Dacus ciliatus Loew (Diptera: Tephritidae) infestation on Zucchini squash (Cucurbita pepo L.) at Huraimila and Diraab, Riyadh Region, Saudi Arabia.

Document Type : Original Article

Author

Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia

Abstract

Dacus
ciliatus Loew (Diptera:
Tephritidae) infestation was studied on regular and hybrid varieties of
Zucchini squash (Cucurbita pepo L.) in summer growing season at two locations,
Huraimila and Diraab educational farm, Riyadh, Saudi Arabia. The experiments
were laid down following randomized complete block design (RCBD). Results
indicated no significant differences between the
varieties for fruit fly (D. ciliatus) infestation within
each location. Huraimila had significantly greater fruit fly infestation as compared to
Diraab. In Huraimila, infestation peak was observed in the last week of May
whereas, in Diraab no significant change was observed during the month of May
but a significant reduction in infestation was recorded in the mid of June.
Results indicated a correlation (r = 0.66 at <0.0001) between average number
of zucchini squashes harvested and number of infested squashes per line.

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