Quantitative periodism of phosphorus in constituent parts of mango trees.
Reddy S. E.
Author Affiliation: Gujarat Agric. Univ., Anand Campus 388 110, India.
South Indian Horticulture 34 : 210-213
Abstract : A new approach to the quantitative distribution of P in mango trees is presented. By this method, the dry matter in the whole tree is assumed to be constant (100 kg) throughout the year, and its distribution over different parts of the tree (leaves, shoots, wood, bark, roots, flowers and fruits) is based on the relative proportions of the actual dry matter in the different tree components in each month. The DW of different components in each month is calculated per unit weight of the tree using the above mentioned proportions. The quantities of P in each component are then calculated by multiplying the correct dry matter by the percentage concentration of P in the respective part of the tree. The P level in the whole trees was low in Sep., Nov. and Mar., preceding the periods of flower bud differentiation, floral emergence and development of fruitlets, respectively.