DIFFERENTIAL RESPONSE OF MANGO VARIETIES TO BORON
The Winter cultivar was the least sensitive, Tommy Atkins, was intermediate and Haden 2H and Van Dyke were very sensitive to boron. The borax application did not alter the yield of Winter, doubled the yield of Tommy Atkins and increased more than five times the yield of Haden 2H and Van Dyke. The low yield of Van Dyke and Haden 2H, without boron application, was due to excessive drop of young fruits. The average of boron content in the medium leaves without boron application, ranged from 7.6 to 10.0 mg/kg and in the blocks which received boron were from 23.9 to 29.9 mg/kg. It was concluded that the boron requirement of mango varieties used as crown is quite variable.