Density of Population Test of Yellow Stem Borer S. incertulas (Walker) (Lepidoptera: Pyralidae) and Varieties Rice to Preferences and Levels of Crop Damage on SRI Cultivation

Abstract

Research has been carry out to study the density of population test of yellow stem borer S incertulas and varieties Rice to preferences and levels of deadheart and whiteheart attack on SRI cultivation is done in the home scruen Experimental Station Department of Plant Pests and Diseases Jatinangor Faculty of Agriculture, Padjadjaran University, from October 2011 until January 2012. The design used was a randomized block design with two factors factorial pattern and ruplicated thrue times. The first factor is the density population of yellow stem borur consists of four levels ie p,: 5 pairs of moth, P2: 10 pairs of moth, Ps: 15 pairs of moth, and P4 : 20 pairs of moth. Second factor is a rice varieties consists of four levels, namely: v,: lnpari-1 varieties, V2 : lnpari-13 varieties, vs: Sarinah varieties, and V4 : Ciherang varieties. The rusults showed that 5 pairs moth of yellow stem borur can caused deadheart and whiteheart attack on the varieties Sarinah lowest and the varities lnpari-1 highest.