Analisis Indeks Normalisasi Perbedaan Kebasahan (NDWI) Menggunakan Foto Multispektral pada Tanaman Kelapa Sawit Terserang Ganoderma di Kebun Percobaan PPKS Sei/Aek Pancur

Abstract

Ganoderma boninense has been identified as the most common species that infects and causes death in oil palm. Soil moisture can affect the development and spread of Ganoderma disease. Detection of Ganoderma infestation in oil palm plants has been done using remote sensing, such as Unmanned Aerial Vehicle (UAV). This research aims to assess the NDWI (Normalized Difference Water Index) method to estimate soil moisture status in oil palm plantations attacked by Ganoderma disease in Indonesian Oil Palm Research Institute (PPKS) Experimental Plantation Sei Aek Pancur, Deli Serdang Regency. This research was conducted from January 2024 to June 2024. Sampling in the field was based on the level of Ganoderma infestation. The results of this research showed that soil moisture and NDWI with a negative correlation r = -0.474. Soil temperature has a significant correlation on soil moisture with a negative correlation value of r = -0.498. The relationship of multiple linear regression of NDWI and soil temperature followed the equation Y = 28.786 - 35.784 NDWI - 0.636 soil temperature and the relationship was moderate with R2 = 0.339.