Ivan juel parningotan didinius lumbanraja, Nirm.01.04.19.083, Kajian Ketahanan Varietas Tanaman Kelapa Sawit (Elaeis quinence Jacq.) DxP Langkat and Socfindo Lame Against Bagworm Pest Attack (Metisa plana) PT. Perkebunan Nusantara III Kebun Rambutan with the aim of studying differences in the level of resistance of DxP Langkat and Socfindo Lame varieties to attack by bagworms (Metisa plana) in block 183 and block 193 Afdeling III Kebun Rambutan. This study was carried out in December 2022-May 2023 at PT. Nusantara Plantation III Rambutan Garden, Tebing Tinggi District, Serdang Bedagai Regency. This assessment method is quantitative. Data collection in the study was carried out by collecting data from the field and the Kebun Rambutan office. The analytical method used for the resistance of the DxP Langkat and Socfindo Lame oil palm varieties was using a test Independent sampel t-test. Test results Independent sampel t-test The bagworm attack data on DxP Langkat and Socfindo Lame varieties showed significant differences in the bagworm attack of the two varieties