ISHS Acta Horticulturae 455: V International Mango Symposium
MACRO AND MICRONUTRIENTS FOLIAR CONTENT VARIATION IN MANGO CV. MANILA |
| Authors: | C. Guzmán-Estrada, R. Mosqueda-Vázquez, S. Alcalde-Blanco, A. Martínez-Garza |
| Keywords: | Mangifera indica, N, P, K, Ca, Mg, Fe, Cu, Mn and Zn content, fenology, rainfall mango, humid tropic |
| Abstract:
Mineral nutrition of mangos is an important component of its management so that both, foliar and edaphic diagnosis would be a mean to determine fertilizer requeriments of this crop. A small mango grove 31 years-old, located at the Cotaxtla Experimental Station, was used for leaf sampling every month during two years the foliar content variation of N, P, K, Ca, Mg, Fe, Cu, Mn, and Zn. The leaf chemical analysis was made on a dry weight basis.. Based on fruit production four phenological patterns could be identified. Results showed that during the study six vegetative flushes ocurred. They differentiated into blooming panicles 7 to 20 months later. According to the sufficiency intervals existent in the current literature, the N was found to be between an adequate to an excesive range; the P was between a deficient to an adequate range; the K, Mg, Fe, and Zn were at an adequate level; the Ca, Cu, and Mn were present at a deficient level. Foliar content of N, P, K, Ca, Mg, Fe, Cu, Mn, and Zn showed a different behavior, which varied with time, without detecting any period of defined stability, but only with the K. The nutrients concentration showed a different behavior and there were not any difference between phenological patterns. There are great differences between the old and young vegetative flushes, but this does not happen so between the flushes in the presence and absence of the fruits. The increase and decrease in the nutrients concentrarion were independent of the phenological phases, rainy season and N, P and K fertilizer applied; except a positive effect of the fertilization on the K concentration in the presence of hight rainfall. These foliar concentration were not related either with fruit production. | |
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