SERANGGA PREDATOR PADA EKOSISTEM PADI SAWAH DI KECAMATAN TOMBATU, KABUPATEN MINAHASA TENGGARA

Abstract

ABSTRACT
The study aims to determine the type and predators of insect populations in lowland
rice ecosystems in the district Tombatu Southeast Minahasa regency. The experiment
was conducted on the rice in the village Tombatu, District Tombatu, Southeast
Minahasa Regency. The research carried out by the survey on rice crops in the district
Tombatu Southeast Minahasa District, the Village Tombatu One, Tombatu Two, and
Three Tombatu. Sampling was carried out with a diagonal slice method that
establishes five sub-plot that is on the corner and the middle of the sampling sites.
Sampling was performed using insect nets swung over rice plant as much as ten times
the double swing. Insects are netted immediately put into "killing bottle" then
collected in 70% alcohol to be identified. Identify the type of insect predators
conducted using the facilities of Entomology and Pest Plant Laboratory, Faculty of
Agriculture UNSRAT. The research found seven insect predators with an average
population Menochilus sp. (5.18 tail) Paederus sp., (3.34 tail), Agriocnemis spp. (2,24
tail), Conocepalus sp. (1.10 tail), Ophionea sp. (0.68 tail), Sphecidae (0.52 tails), and
Libelulla sp. 0.27 tails). On average the highest predator insect populations found in
the village Tombatu Two (4.55 tail), then the Village Tombatu One (1.07 tail) and the
village of Three 0.91 Tombatu tail). The higher the age of the plant the more
predatory insect populations.