Department of Statistics and Mathematics, ANGR Agricultural University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh, India. e-mail: akjangam@yahoo.com
* Address for correspondence: Scientist, ICAR Research Complex for Goa, Ela, Old Goa, Goa - 403 402, India.
Sequential Sampling plan for rice Brown planthopper, Nilaparvata lugens Stal. was developed based on the negative binomial distribution pattern. The plans were developed for both ‘with predator’ and ‘without predator’ cases and decision lines were formulated for light verses severe infestations. Based on the sampling plans, operating characteristic curve and average sample number curve were drawn to find out the probability of taking correct decision and number of samples required at various infestation levels, and the results indicated that the sampling plans derived were efficient and accurate.
Sequential Sampling, Rice brown planthopper
