Influence of low light intensity on the nutritional physiology of mango (Mangifera indica L.). II. Inorganic elements.
Shu Z.-H., Tseng M.-J., Lee K.-C.
Author Affiliation: Fengshan Station, Kaohsiung, Taiwan.
Journal of the Agricultural Association of China : 53-60
Abstract : Field experiments were carried out to test the effects of shade, period of illumination and planting density. Concentrations of N, K, Ca, Mg and Cu in the leaves of mango seedlings increased after 1 month of shading compared with unshaded controls but seedlings shaded for 5 months had lower N, P, Ca and Mn leaf concentrations than control plants. N, P and K contents in leaves of shaded plants and leaf K content of control plants decreased from the top to the bottom of the tree whereas Ca concentration increased. A high planting density and only a short period of illumination during the day (on sloping land) lowered leaf N, P and Zn contents. [For part I see Horticultural Abstracts 53, 4661.]