Assessment of sampling units for sucking pests of okra

Abstract

The present investigation was conducted during kharif season for the year 2015-16 and 2016-17 at Experimental Farm of Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, and Akola. An experiment was laid in Randomized block design. Sampling unit’s viz., number of leaves according to strata i.e. top, middle and bottom canopy of selected plants were evaluated to determine best sampling unit for sucking pests. The results revealed that for counting of sucking pests, selection one each leaf from top, middle and bottom stratum of the plant gave highest population of sucking pests during both the season. Hence, this stratified sampling is appropriate and should be used for counting of sucking pests on okra.