*Corresponding author E-Mail: nurmohalsau@yahoo.com
Abstract
The study was conducted in the central farm of Sher-e-Bangla
Agricultural University (SAU), Sher-e-Bangla Nagar, Dhaka during the
period from April to July, 2015 to find out the incidence of red
pumpkin beetle and fruit fly on different varieties of sweet gourd.
Seven varieties of sweet gourd e.g., Sweet Queen, Pronoy F1 (hybrid),
Thai Sweet, Big Boss, Monika, Shokti, and Syndrila were used as
treatments. The study was laid out in Randomized Complete Block
Design (RCBD) with four replications. Data on infestation levels at
different growth stages were recorded to find out the tolerant
variety of sweet gourd for better production. The highest infestation
of red pumpkin beetle (RPB) was found in Thai sweet (32.00 %) variety
followed by Pronoy F1 (20.00 %) variety. On the other hand the
lowest infestation was found in Big Boss (5.00 %) and Shokti (5.00 %)
varieties. Big Boss and Shokti varieties were found more tolerant to
the RPB than the other varieties. Highest infestation (23.00 %) was
found in Thai sweet and Pronoy F1 caused by cucurbit fruit fly and
the lowest infestation was found in Shokti (2.00 %) variety. Shokti
variety was more tolerant to the red pumpkin beetle and cucurbit
fruit fly than the other varieties and it encouraged growth giving
higher yield (25.23 t/ha).
Key words: Sweet gourd, pumpkin beetle and fruit fly.
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