The Presence of Refugia and Population of Insect Pest in Rice Field
Sri Nur Aminah(a*), Andi Nasruddin(a), Nurul Wirid Annisaa(b), Tamrin Abdullah(a), Fatahuddin(a)

a)Department of Plant Pests and Diseases, Faculty of Agriculture, Hasanuddin University
Jalan Perintis Kemerdekaan KM. 10 Tamalanrea Makassar 90245

b)Magister Student of Phytopathology, Post Graduate Program Bogor Agricultural University,
Jalan Raya Dramaga, Babakan Kecamatan Dramaga Bogor 16680, West Java, Indonesia

*e-mail: srifirnas[at]gmail.com

Abstract

Refugia is a type of plant playing roles as a food source and shelter for natural enemies in extreme environmental conditions. Legumes, food plants and flowering plants used as refugia. The purpose research is to study the dominant pest population in bund of rice field planted with refugia. The research was conducted in Tanasitolo village, South Sulawesi from June to November 2017. The study used a Randomized Block Design of five treatments and repeated in four times. The research was started by planting several different plants as refugia in bund of rice fields, namely: P1 = bund planted with maize and soybean- P2 = bund planted with flowering plants- P3 = bund planted with taro and banana- P4 = bund planted with long beans and P5 = bund without plant (control). The results showed that rice fields used various plants as refugia, the insect population was in lowest number. The results showed that Valanga sp. were not found in P1 when the rice was 56 and 63 days after planting (DAP). The number of Nephotettix virescens (0.5 individuals) when the rice was 42 DAP. Leptocorisa acuta has the lowest population at P1 and P3 in the age 84 DAP (10.5 individuals). The conclusion of the experiment, the dominant insect pest population has decreased due to the presence of refugia planted in rice fields.

Keywords: rice, refugia,Valanga sp., Nephotettix virescens, Leptocorisa acuta

Topic: Integrated Pest and Disease Management