Factors associated with black tip and internal necrosis in mango and their control.
Ram S.
Author Affiliation: Department of Horticulture, G.B. Pant University of Agriculture and Technology, Pantnagar 263?145, India.
: 797-804
Abstract : Black tip and girdle necrosis, disorders of mango fruits occurring in northern (but not southern) India, are caused by gases (mainly sulphur dioxide, ethylene and carbon monoxide) emanating from nearby brick kilns. Incidence of black tip could be reduced by spraying fruits with NaOH (0.6-0.8%) or Na2CO3 (0.6%) solutions to neutralize acidic gases, or by planting less susceptible cultivars such as Langra. Internal fruit necrosis, taper tip and tip pulp are disorders caused not by brick-kiln gases, but by boron deficiency, and could be remedied with 0.8% borax sprays.