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Effect of defoliation on tree growth of Populus deltoides Bartr. ex Marsh in India


Affiliations
1 Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, PO-New Forest, Dehradun 248 006, India, India
2 Division of Statistics, Indian Council of Forestry Research and Education, PO-New Forest, Dehradun 248 006, India, India
 

To assess the impact of artificial leaf defoliation of Populus deltoides on its different growth parameters, a study was conducted on G-48 clone under field condition and four defoliation treatments, i.e. 25%, 50%, 75% and 100%, were done in addition to control. Defoliation pattern was simulated with insect defoliator Clostera spp. feeding and the experiment was conducted from July to December. Significant variation was observed in tree height and DBH growth loss in all the treatments with respect to control, and 24.16–66.03% volume increment loss was observed under 25–100% leaf defoliation respectively

Keywords

Artificial defoliation, Clostera species, growth loss, Populus deltoides.
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  • Effect of defoliation on tree growth of Populus deltoides Bartr. ex Marsh in India

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Authors

Arvind Kumar
Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, PO-New Forest, Dehradun 248 006, India, India
Jitendra Kumar
Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, PO-New Forest, Dehradun 248 006, India, India
Girish Chandra
Division of Statistics, Indian Council of Forestry Research and Education, PO-New Forest, Dehradun 248 006, India, India

Abstract


To assess the impact of artificial leaf defoliation of Populus deltoides on its different growth parameters, a study was conducted on G-48 clone under field condition and four defoliation treatments, i.e. 25%, 50%, 75% and 100%, were done in addition to control. Defoliation pattern was simulated with insect defoliator Clostera spp. feeding and the experiment was conducted from July to December. Significant variation was observed in tree height and DBH growth loss in all the treatments with respect to control, and 24.16–66.03% volume increment loss was observed under 25–100% leaf defoliation respectively

Keywords


Artificial defoliation, Clostera species, growth loss, Populus deltoides.

References





DOI: https://doi.org/10.18520/cs%2Fv123%2Fi10%2F1268-1273