Uji ketahanan beras dari tujuh varietas padi (Oryza sativa L) terhadap hama kumbang moncong beras (Sitophilus oryzae L) di laboratorium

Abstract

The rice weevils (Sitophilus oryzae) is a primary rice pest that can damage rice in storage. This study aims to determine the adult population of S. oryzae damaging to rice in seven rice varieties, and the level of resistance of rice to S. oryzae during storage. The research was conducted in February–July 2022 at the Laboratory of Agricultural Biotechnology and the Laboratory of Plant Pest Science, Faculty of Agriculture, University of Lampung. The experiment consisted of seven treatment types of rice varieties namely Ciherang (P1), Inpari 32 (P2), Inpari 6 Jete (P3), Mapan 05 (P4), Cilamaya Muncul (P5). Sukau (P6), and Mentik Wangi (P7). The observational variables included the new adult population, the median development time of adults S. oryzae, the rice damage percentage, and the resistance index. The results showed that the adults population of S. oryzae sorted from the highest to the lowest population, namely Mentik Wangi, Ciherang, and Inpari 32, Sukau, Inpari 6 Jete, Cilamaya Muncul, and Mapan 05. The highest rice damage was found in the Mentik Wangi, and the lowest rice damage was in the Mapan 05. The degree of endurance of rice against S. oryzae was included in the moderate category, namely Inpari 6 Jete, Cilamaya Muncul, and Mapan 05. The moderately susceptible category was Ciherang, Inpari 32, and Sukau, while the susceptible category was Mentik Wangi.