Abstract
An experiment was conducted on natural resistance in Shisham clones in foothills of Western Himalayas under which 35 clones of Haryana, Rajasthan and Uttar Pradesh origin were screened against Odontotermes parvidens. Data recording was done monthly from January 2000 to June 2000. After calculating the percentage of infestation all clones were categorized as most resistant (7 clones, i.e., 92, 99, 83, 78, 87, 103 and 107), highly resistant (4 clones, i.e., 66, 58, 15 and 61), resistant (5 clones, i.e., 55, 81, 106, 204 and 215), moderately resistant (5 clones, i.e., 10, 24, 86, 91 and 200), least resistant (7 clones, i.e., 49, 236, 36, 237, 20, 101 and 260), least susceptible (2 clones, i.e., 6 and 90), moderately resistant (3 clones, i.e., 51, 42 and 49) and highly susceptible (only one clone, i.e., 44 from Uttar Pradesh origin).
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