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Indian Journal of Agricultural Research, volume 38 issue 3 (september 2004) : 217 • 221

SEASONAL R..UcruAll0N, DAMAGING POTENTIALAND BIOLOGY OF SPlLARCfIA OBUQUA WALK. ON PAULOWNIA FORTUNEl

Manoj Kumar!, Mukhtar Ahmad

Affiliations

¹Division of Forest Entomology. Forest Research Institute. Dehra Dun - 248 006. India

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Cite article:- Kumar! Manoj, Ahmad Mukhtar (2024). SEASONAL R..UcruAll0N, DAMAGING POTENTIALAND BIOLOGY OF SPlLARCfIA OBUQUA WALK. ON PAULOWNIA FORTUNEl. Indian Journal of Agricultural Research. 38(3): 217 • 221. doi: .

ABSTRACT

Bihar hairy caterpillar Spilarctia obliqua Walk, was active on Paulownia fortunel from April to December 1998–1999 at Dehradun and highest population was 59.75 larvae per plant during October. Its population showed significant negative correlation with average temperature (r = -0.07) and positive with average relative humidity (r = 0.39). The average generation period was 42.40 days. and feanllty 538.80. There were six larval instars within 24.80 days. Single Iarva of S. obllqua could consume 8463.10mm 2 leaf area of P. fortune at the rate of 343.34 mm 2 per day during its larval period

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REFERENCES

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SEASONAL R..UcruAll0N, DAMAGING POTENTIALAND BIOLOGY OF SPlLARCfIA OBUQUA WALK. ON PAULOWNIA FORTUNEl

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