A Survey of Infestation of Gall Insect on Saptaparni (Alstonia scholaris) in Dehradun and Yamuna Nagar, (India)

Kanchan Chatterjee, Preeti Saxena

Abstract: Alstonia scholaris commonly called as saptaparni in India is a wide spread ever green tree and shrub of family Apocynacae. Plantation of most trees suffer from heavy damage due to insect pest outbreak. The major damage of the tree is gall disease caused by gall Insect. Present study was done to evaluate the prevalence the gall insect on saptaparni in different areas of Dehradun Uttarakhand and Yamuna Nagar, Haryana by comparing morphological characters changes of leaves of the healthy tree present in that place to the total tree of Alstonia scholaris planted at that particular areas. Observations suggest that infestation was vary area to area in both Dehradun and Yamuna Nagar. It was higher in the Dhoolkot area and lower in the shisham bada and Sher Pur region in Dehradun. Higher infestation was observed in Chachruli and lower in Sushant city in Yamuna Nagar.

Keywords: Infestation, Gall insect, Alstonia scholaris. Satparna, Pauropsylla tuberculata

How to Cite?: Kanchan Chatterjee, Preeti Saxena, "A Survey of Infestation of Gall Insect on Saptaparni (Alstonia scholaris) in Dehradun and Yamuna Nagar, (India)", Volume 14 Issue 7, July 2025, International Journal of Science and Research (IJSR), Pages: 939-942, https://www.ijsr.net/getabstract.php?paperid=SR25714143211, DOI: https://dx.doi.org/10.21275/SR25714143211