G. it. Ent., 4 (22): 229-234
August 31, 1989
Establishing a Sequential Sampling Plan
and Economic Injury Level for
Leucinodes orbonalis Guen. infesting egg-plant
by
G. C. TEWARI & G. S. PRASADA RAO
Abstract - Studies were conducted to determine a Sequential Sampling Plan and an Economic Injury Level for Leucinodes orbonalis Guen. infesting egg-plant at the Indian Institute of Horticultural Research, Bangalore. Based on the relation between damage intensity and yield loss, the Economic Injury Level was equivalent to 6 per cent infestation. The Spatial Distribution of infested fruits in individual pickings followed a Negative Binomial pattern, but for the total of pickings it was Normal. The treatment decision equations derived from the Sequential Sampling Plan were An = 3.48n -16.95 and Rn = 3.48n + 16.95.
