Parasitoid as a Biological Control Agent of Rice Bug (Leptocorisa oratorius Fabricius): Effort Towards Food Security

Maulina, Fri (2019) Parasitoid as a Biological Control Agent of Rice Bug (Leptocorisa oratorius Fabricius): Effort Towards Food Security. In: CONFERENCE PROCEEDING 3rd INTERNATIONAL CONFERENCE ON SECURITY IN FOOD, RENEWABLE RESOURCES, AND NATURAL MEDICINES 2019 (SFRN 2019). pusat penelitian dan pengabdian pada masyarakat Politeknik Pertanian Negeri Kupang. ISBN 9786025126284

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Abstract

Parasitoid is one of the natural enemies of pests in crops. The use of natural enemies in biological control against pest represents such an alternative to chemical insecticides which has a negative impact on the environment. There hasn’t been any report on the species of egg parasitoid in rice bug in West Sumatra. Therefore, it is urgent to study them within the context of agricultural system. The objective of this study was to investigate kinds of species of parasitoid, diversity index, parasitization level and parasitoid mortality found in rice bug eggs in rice fields in West Sumatera. Purposive random sampling was used for determining the sampling locations. Collecting eggs sampling was conducted for 1 km along transect line in sampling location. The collected eggs of 12 sampling locations then observed and identified in Laboratory of Insect Bioecology, Faculty of Agriculture, Andalas University. The result showed that the kind of egg parasitoid found in the field were Hadronotus leptocorisae and Ooencyrtus malayensis with each parasitization level were 22.3 ± 11.1 % and 4.2 ± 5.3 %. Based on Shannon-Wienner, the diversity of egg parasitoid was low with the index 0.3858

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