ISHS Acta Horticulturae 231: II International Symposium on Mango
EFFECT OF PRE-HARVEST FOLIAR SPRAYS OF ZINC ON POST-HARVEST CHANGES IN THE QUALITY OF MANGO CV DASHEHARI |
| Authors: | O.V. Kumar, G. Kumar |
| Abstract:
Trees were sprayed with 1 per cent aqueous solution of zinc sulphate (Zn 0.23 per cent) once or twice (at 20 days interval) starting on 11 May and fruits were stored in a thoroughly cleaned, predisinfected and properly ventilated room for 10 days at 29–34°C and 85–90 per cent RH. Two sprays of zinc sulphate showed a positive effect on the total sugar and TSS contents of fruits which continued to increase during storage. A positive coefficient of correlation (0.977) existed between total sugar and TSS contents. The acidity and ascorbic acid contents showed a declining trend, although the later showed some increase in the initial stages of storage. Vitamin A contents showed a continuous increase throughout irrespective of the treatments applied. It was concluded that, for maintaining an overall high quality of fruits at room storage conditions for 8–10 days, two pre-harvest foliar sprays of 1 per cent aqueous solution of zinc sulphate (Zn 0.23 per cent) at 20 days interval in May were found to be quite beneficial. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
