Effect of irrigation and different levels of nitrogen on yield, fruit quality and leaf mineral concentration of Irwin mango (Mangifera indica L.).
Chang J. W., Lin H. L., Yen C. R., Lee K. C.
Author Affiliation: Chia Yi Agricultural Experiment Station, TARI, Taiwan.
Special Publication - Taichung District Agricultural Improvement Station : 21-29
Abstract : In a trial carried out at the Chia Yi Agricultural Experiment Station during Aug. 1992 and Aug. 1993, 4-year-old mango cv. Irwin trees were either not irrigated or irrigated with 40 litres of water twice a week. Trees were also supplied with 0, 0.26 or 0.62 kg urea/tree. The average yield/tree was higher with than without irrigation (22.24 vs. 17.86 kg) but fruit quality did not differ significantly with irrigation. At the full bloom stage, leaf N, K, and Cu concentrations were greater for irrigated than non-irrigated trees, but the opposite was true for Ca, Mg, Fe and B concentrations. Average yield/tree and fruit quality did not differ between N fertilizer treatments, but leaf N concentration was higher with urea application. Of the treatment combinations, irrigation + no urea resulted in the highest yield/tree (25.29 kg).