Indonesia Conference Directory

Synchytrium pogostemonis is one of the most important fungal pathogens. This fungus causes budok disease on patchouli plant. Research to control the disease was conducted at Indonesian Spices and Medicinal Crop Research Institute (ISMCRI) Bogor. Research purpose was to evaluate effectiveness of citronella, clove, and neem essential oil formulas on budok disease incidence. Single formula of citronella, clove, and neem were tested, as well as, their combination formulas of those three essential oils. Two synthetic fungicides (benomyl and bourdeaux mixture) were also tested as comparisons, as well as, water as a control treatment. One-month-old patchouli plants were sprayed with single and combination formulas of those three essential oils (5 ml/l), benomyl (3 g/l), bourdeaux mixture (1 g/l) and water as much as (100-200 ml/plant) every two weeks for 5 times respectively. Experiment was conducted in a Randomized Completelly Block Designed (10 treatments, 3 replicates, and 16 plants/replicate). This experiment indicated that application of combination formula of (neem+citronella) was the most effective (56.51%) against budok disease. Its effectiveness was higher and comparable to benomyl (47.82%) and bourdeaux mixture (52.18%). This combination formula of (citronella+neem) could be recommended for the control of budok disease of patchouli. The use of essential oils combination formulas, hopefully could control budok disease, inhibit the resistancy of target pathogens, reduce the concentration of the more toxic essential oil once, reduce phytotoxicity, as well as, to reduce the use of synthetic pesticides.