KOMPOSISI HAMA KELOMPOK INSEKTA TANAMAN PADI PADA WAKTU BERA DI PULAU TARAKAN
Knowledge on the composition of pests in the rice cultivation area, particularly comparing a growth phase with a fallow period or rest phase is useful for planning the controi of the pests. The purpose of this research was, (1) to figure out the differences in the composition of rice pests at the fallow period and growth phase, and (2) to find out the efforts to manage rice plants in Tarakan Island. Sampling of pests in four locations consisting of one location on the generative phase (Tanjung Pasir) and vegetative phase (Mamburungan), and two locations of the fallow period (East Mamburungan). The differences in composition used the comparison of types and numbers of individuals, diversity index (H'), Richness (R), Prevalence (E), and Equality (Sorrensen and Bray Curtis). The results revealed that there were 6 (six) pest species, namely Orya hvda, Phlaeoba fumosa, Leptocorisa acuta, Chilo suppressalis Spodopteru litura, and Scotinophara coarctata. The generative phase had the highest diversity and richness values (H 1.24, R-1.34) compared to the fallow period (H 0.83 and 0.86 R-0.59 and 0.58). However, the highest prevalence index value was at the fallow period location (E-0.88 and 0.76). Plant Pest Organism (OPT) management was conducted by selecting seeds, regulating nutrition, regulating plant spacing, and controlling pest by synthetic pesticides. In particular, for pest management in the fallow period. farmers had no knowledge that this period could be a temporary host for Plant Pest Organism ofrice