Early Identification of Basal Stem Rot Disease Symptom on Oil Palm using Multispectral Small Format Aerial Photograph

Basal stem rot disease that caused by Ganoderma boninense is the most destructive disease in oil palm plantation in Indonesia. Early detection of Ganoderma disease incidence will inform the pattern of disease spread quickly and determine the best disease management strategies. Identifiying the oil palm that attacked Ganoderma have been studied by using Multispectral Small Format Aerial Photograph (MSFAP). The study was carried out to determine the MSFAP vegetation index and correlate with level of Ganoderma attacked. The methods that used on this study were using simple ratio (SR) and atmospherically resistance vegetation index (ARVI). The results showed that vegetation index analyzing by using SR and ARVI have strong correlation with level of Ganoderma attacked (r2=0.764 for SR and r 2=0.865 for ARVI).