Characterization of symptoms severity on various mango cultivars to quick decline of mango in district Multan.
Naqvi S. A. H., Rashida Perveen, Malik M. T., Owais Malik, Ummad-ud-Din Umer, Wazeer M. S., Ateeq-ur-Rehman, Majid T., Abbas Z.
Author Affiliation: Department of Plant Pathology, Faculty of Agricultural Sciences and Technology, Bahauddin Zakariya University, Multan, Pakistan.
International Journal of Biosciences (IJB) 4 : 157-163
Abstract : Quick decline of mango caused by Lasiodiplodia theobromae is among numerous diseases which are responsible for low production of mango crop in Pakistan. Symptoms of mango quick decline can be characterized as drying of twigs, drying of branches, gummosis, bark splitting, and root rotting, which were the most commonly prevailing symptoms of the disease and could be observed alone or in combination with two or more than two symptoms in the orchards. In the present study characterization of the symptoms severity of quick decline of mango in Multan region was addressed to find out the current status of disease symptoms of disease on commonly cultivated varieties in mango grooves at different surveyed locations. Besides the most commonly occurring symptoms, other diseases on leaves and inflorescence were also addressed. Maximum defoliation, drying of twigs, drying of branches and gummosis was observed on east plane with 9.83, 15.75, 9.08 and 13.32% respectively, while maximum bark splitting 14.08% was recorded at south plane. Similarly maximum root rotting 12.83% was observed in north plane and the higher infection 16.66% on flowers was calculated in east plane. All the varieties showed the infestation of characteristic symptoms of disease whereas, Chaunsa Summer Bahisht was found to be the most susceptible variety to disease and all of the major disease symptoms were widely exposed on this variety. These investigations provide current status about the prevailing symptoms severity of mango quick decline in mango growing zone of Pakistan i.e., Multan.