Feeder root distribution of different varieties of mango.
Rao D. P., Mukherjee S. K.
Author Affiliation: University College of Agriculture, Calcutta University, Calcutta 700?019, India.
: 325-334
Abstract : The feeder root density (FRD) of 40-year-old Fazli, Langra and Himsagar mango trees was determined in Apr. and Oct. 1979 from auger borings at 0-30 cm, 30-60 cm and 60-90 cm depth, at the drip-line and midway between the trunk and drip-line. FRD was greater in Apr. than in Oct., decreased with increasing depth, and was greater at the midway point than at the drip-line. Higher yielding trees had higher FRD than lower yielding trees. There was a positive correlation between FRD and leaf N when sampled after the rains and after harvest (but not before flowering) suggesting the importance of N fertilization for better development of feeder roots. There was a lower correlation between FRD and soil N, and no significant correlation between FRD and soil or leaf P and K.