September 2010. Tip damage on leaves of mango from Orissa, India.

As one member said in response, it is extremely important to know the past history of the plot of mango trees that show these symptoms. It looks like some salt problems (in the soil or from sea water spray), but it is necessary to know the environment of the trees. From Larroussilhe (1979), the only symptoms that look similar are those caused by salt toxicity.