SESSION VI. DISEASE AND PEST PROBLEMS IN MANGO - INVESTIGATIONS ON THE CONTROL OF BLACK TIP DISORDER OF MANGO
Das Gupta (1) and Prasad and Singh (3) reported that the disorder was prevented by spraying borax. Prasad and Singh (3) thought that the alkaline reaction of borax solution acted as buffer against the injurious gases of brick kiln which were mostly acidic in reaction. The present studies were, therefore,conducted to find out the effect of sodium carbonate, sodium hydroxide and borax sprays in preventing the incidence of black tip in mango.
Studies were conducted during 1967 and 1968 in two mango orchards situated in outskirts of Pathankot. Six black kilns were operating within a radius of ½ kilometre from these orchards and the mango crop suffered heavily from the incidence of black tip. Experimental material comprised of nearly twenty five year old trees of Langra, Gola, Dusheri and Fazri varieties.