Threatening pathogenic diseases of mango: An integrated approach for their management
1999
Misra, A.K. | . | Om, Prakash(Central Institute for Subtropical Horticulture, Lucknow (India))
Oidium mangiferae Berthet, causing powdery mildew is one of the most destructive diseases of mango. Losses recorded for the four consecutive years revealed 29.77 to 90.41 percent incidence. Survey and surveillance conducted for three years revealed that the mildew pathogen persists on old leaves in the form of dormant mycelium round the year and causes floral infection. The diseases could effectively be managed by spraying of fungicides. Efficacy of various chemicals, their concentrations and spray intervals were worked out. Removal of affected leaves malformed panicles, which harbour dormant mycelium, are also advocated for achieving its effective control. Lasiodiplodia theobromae causing die back disease has been recognised, affecting 30-40 percent trees. The disease could effectively be controlled by removal of affected parts of the canopy and treating cut areas with copper oxychloride (0.3 percent). Colletotrichum gloeosporioides, causing blossom blight/anthracnose disease, is one of the major foliage and fruit diseases. Loss due to this disease have been estimated to be as high as 39 percent. To minimize the disease, repeated application of protectant and systemic fungicides and removal of affected foliage are effective measures to combat the disease. Postharvest control is accomplished by pre and post-harvest treatments, employed to kill the quiescent infection without damaging the mango fruit.
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