The purpose of this study was to determine the distribution of the New Guinea flatworm (Platydemus manokwari) as a natural enemy of snails in the Manokwari area. Observations were made at 32 locations in Manokwari area used descriptive method with interviews and direct field observations. The results showed that the distribution of the New Guinea flatworm (P. manokwari) as a natural enemy of snails was found in all locations. However, these worms have not been found directly as biological control agents for snails.

The objective of this research is to know the pod rot disease�s epidemic in Kosiwo, South Yapen and Angkaisera Distric in Yapen regency. The result shown that the disease intensity in Kosiwo, South Yapen, and Angkaisera is ranged between 54.2 percent to 82.4 percent with average 66 percent. The high level of damage is 82.4 percent found in Ariepi village Kosiwo district and the low level of damage is 54.2 percent in Kontiunai village. The high level of disease intensity is influence by the plant�s susceptibility, the virulence of pathogen, compatibility of environment, and disease management of farmer.