INSECT PESTS AND THEIR PREDATORS ON RICE-FISH SYSTEM

By: Sudjarwo, Herminanto, A. Agnanto, and L. Ardiyanto
Faculty of Agriculture UNSOED

ABSTRACT
A study has been carried out to know pests, natural enemies, and their control on rice planted in rice-fish system at Beji, Purwokerto. Results showed that pests in the rice-fish system were stem borers, leaf folders, case worms, gall midges, brown planthoppers, black bugs, and rats. The leaf folder on generative phase of the plants performed the highest attack intensity up to 26.6%. Predators found were spiders, the lady beetle Verania spp., and Paederus fuscipes. Verania spp. dominated its existence on rice. Positive impact of the rice-fish culture is its reduction in using chemical pesticides when compared with the monoculture rice culture .
Key words: Plant pests, predators, rice-fish system, and insecticide utilization.