Evaluation of bio intensive pest management module against yellow stem borer, Scirpophaga incertulas and leaf folder, Cnaphalocrocis medinalis on rice crop at Raipur (C.G.)

Abstract

BIPM methods employed in the present study had an impact on the percent incidence of dead heart, white ear head, leaf folds, natural enemies and yield. The percent damage of dead heart, white ear head and leaffolder were highest (12.60% DH) (15.55% WEH) (7.40% folded leaves) in untreated plots, moderate (6.78% DH) (9.97% WEH) (3.20% folded leaves) in farmer practice and very less (4.29% DH) (7.44% WEH) (1.47% folded leaves) in BIPM practice plots, indicating BIPM modules maintain good diversity and maintains the pest populations below damaging levels. The population of natural enemies viz. spider and coccinellid were highest (3.16 spider/hill) (2.20 coccinellid/hill) in untreated plots followed by BIPM (2.26 spider/hill) (1.73 coccinellid/hill) and least (0.81 spider/hill) (0.39 coccinellid/hill) in farmer practice. BIPM practices (32.47 kg/plot) had shown better yields as compared to farmer practices (27.91 kg/plot) and untreated plots (24.36 kg/plot).