ISHS Acta Horticulturae 455: V International Mango Symposium
CONTENT AND EXTRACTION OF SEVERAL NUTRIENTS BY MANGO FRUITS OF MANILA CULTIVAR |
| Authors: | C. Guzmán-Estrada, R. Mosqueda-Vázquez, S. Alcalde-Blanco, A. Martínez-Garza |
| Keywords: | Mangifera indica, nutrient variation, epicarp, mesocarp, endocarp, pericarp |
| Abstract:
Regarding this cultivar the level of nutrient supply by the soil during fruit growth and development as well as nutrient extraction by fruits are unknown. In order to acomplish it, seven fruit samplings every ten days were made starting 20 days after fruit set up to fruit maturity. These sampling was carried out using eleven 31 year-old mango trees from a grove located at the Cotaxtla Experimental Station. The chemical analysis of fruits and their components was made on a dry basis. Using the concentration values determined and total dry weight, of each one of the fruit component tissues, nutrient extraction was calculated. The conclusions were: 1) At fruit ripening complete mango 'Manila' fruits are composed by 80.7% water, peel 63.7%, flesh 79%, stone 58.1%, and seed 52.3%; fruit had an absolute growth rate of 3.5 g day-1; fruit flesh contributes most to fresh weight (81.9%) as well as dry weight (68.5%); growth pattern of each one of the fruit component tissues was a single sigmoid curve. 2) Fruit peel is the richest tissue in Mg, Fe and Mn; the flesh is highest in K, the stone in Ca and seed in N, P, Cu and Zn; fruit flesh showed the highest nutrient requirement in contrast to stone which showed to have the lowest nutrient requirement; the dynamic behavior of nutrient content in all four fruit components was different to the dynamic of nutrient amounts extracted because of dilution and translocation phenomenons. 3) Up to fruit ripening mango 'Manila' fruits have extracted 529.5 mg of K, 348.6 mg of N, 66.9 mg of Ca, 47.8 mg of Mg, 42.1 mg of P, 1.5 mg of Fe, 0.6 g of Zn, 0.4 mg of Cu, and 0.1 mg of Mn; nutrient demand rate is higher between 30 to 50 days after fruit set and this is coincident with the highest fruit growth rate. | |
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