Abstract
Banana is a fruit commodity that is consumed by many people. Banana dwarf disease is an important disease, because its presence has spread in banana plants in Indonesia. This study aims to identify the characteristics and intensity of BBTV attacks on banana plants with different planting patterns, sanitation and weed control. This research was conducted in 5 districts in Kutai Kartanegara Regency, namely Samboja, Muara Jawa, Loa Janan, Muara Badak, Loa Kulu. The method used is a survey method that is conducting direct observations in the field using modified score assessments based on morphology of diseased plants (Brooks, 1999). The data obtained were processed to determine the intensity of disease per plot with the formula of disease severity (Agrios, 1997). Disease intensity data were compared based on different banana cropping conditions, sanitation and weed control.Based on the survey results it can be concluded that, in banana tree land with a monoculture pattern, in sanitation and with weed control, the intensity of BBTV disease is higher compared to mixed cropping patterns, without sanitation and without weed control. The character of attack is generally in the assessment score 3 with the characteristics: (1) the edge of the leaf is quite severe yellowing, (2) the existence of leaf narrowing or twisting (3) the occurrence of distortion, dwarf and necrosis (4) found more than four infected banana stems in a clump.
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