Performance of Resistance of Rice Varieties Recommendation of Jember Regency to Brown Planthopper Pest (Nilaparvata lugens Stal.)

This study aims to determine the susceptibility and resistance response of Jember Regency suggested rice varieties from brown planthopper pest (Nilaparvata lugens Stal). The research used randomized block design (RAK). Differences between treatments were tested by DMRT at 5% level. The treatments in this study are using seven varieties of rice such as: treatment A (Sintanur), B (Cibogo), C (Ciherang), D (Inpari 13), E (Cigeulis), F (IR-66) and G (IR-64), each with three replicates. The results showed that the highest planthopper pest populations was on Sintanur variety with an average of 7.10 insects and intensity of attacks in the last observation by 34.07%. This parameter affects the number of productive tillers, grain weight and percentage of dry milled grain hollow. During the study, brown planthoppers preferred a young aged rice, whereas in the older age of the plant population, brown planthoppers were rarely found. The most resistant varieties of this research was the variety IR66 which has a low intensity of the attack on the last observation by 1.11% with a population of brown planthopper pest average of 6.36 insects. Thus, to inhibit the development of brown planthoppers population, Sintanur varieties are not recommended while other varieties can be planted in Jember regency.