*6.1.7 Management of diseases*

The most recommended method used to control these pest and diseases is the use of hot water treatment (51°C). Spraying indoxacarb at 10 ml in 15 l of water, or novaluron at 10 ml in 15 l of water at 15 days interval has been reported to be very effective in controlling shoot borer and leaf roller. Dipping the seed rhizome in quinalphos prepared by dissolving 1 ml in 1 l of water can be used to control rhizome scale insects that destroys rhizomes. Good drainage coupled with treatment of seed rhizome by dissolving 3 g of carbendazim and mancozeb in 1 l of water for almost 30 min before storage should be done to prevent rhizome rot. Moreover, treating seed rhizome by dissolving 2 g of streptomycin in 1 l of water for 30 min canbe used to effectively control bacterial wilt that causes milky ooze when rhizomes are gently pressed.
