Macro and micronutrients foliar content variation in mango cv. Manila.
Guzmán-Estrada C., Mosqueda-Vázquez R., Alcalde-Blanco S., Martínez-Garza A.
Author Affiliation: INIFAP-CIRNO-CESSI, Apdo. Postal 85, C.P. 82000 Mazatlán, Sinaloa, Mexico.
: 471-478
Abstract : During 1985-87, the foliar variation of N, P, K, Ca, Mg, Fe, Cu, Mn, and Zn content in mangoes in a 31-year-old grove at the Cotaxtla Experimental Station, Veracruz, Mexico, was investigated over 2 years. The leaf chemical analysis was made on a dry weight basis. Based on fruit production, 4 phenological patterns were identified. During the study, 6 vegetative flushes occurred. They differentiated into blooming panicles 7-20 months later. According to the sufficiency intervals in the literature, N was adequate-excessive, P was deficient-adequate, K, Mg, Fe and Zn were adequate, and Ca, Cu and Mn were present in deficient quantities. The foliar content of N, P, K, Ca, Mg, Fe, Cu, Mn and Zn varied with time. There were significant differences between old and young vegetative flushes. Except for the positive effect of fertilizers on K concentration under high rainfall, the increases and decreases in the nutrient concentrations were independent of the phenological phase, rainy season or N, P and K fertilizer applications. The foliar nutrient concentrations were not correlated with fruit production.