Management of citrus foot rot/gummosis through integration of agronomic practices, bioagent and chemicals

摘要

Different agronomic practices adopted by citrus growers and their impact on gummosis were studied. Maximum gummosis incidence (6.8%) was observed on 20-25 years age plants, 6.3% in closed spacing (5x4m) and 8.2% in flood irrigated orchards. Under field trial for its management, maximum lesion size recovery of foot rot/ gummosis (88.9%), fruit yield (58.5 kg/plant) and canopy volume (16.9 m3) was obtained by application of metalaxyl M paste (25g/l water), metalaxyl M soil application (2.5g/l water) and Fosetyl Al (0.1%) spray in mid of February, March and August Soil application o/Trichoderma harzianum along with Bordeaux paste and copper oxychloride (0.3%) spray resulted in 54.7% recovery of gummosis lesion. Garlic bulb extract (20%, w/v) pasting and its spray (10%, w/v) application caused 47.4% lesion recovery.