ISHS Acta Horticulturae 455: V International Mango Symposium
INCREASING PRODUCTIVITY OF MANGO ORCHARDS BY PRUNING AND APPLICATION OF PACLOBUTRAZOL. |
| Authors: | M.M. Burondkar, R.T. Gunjate, M.B. Magdum, M.A. Govekar, G.M. Waghmare |
| Abstract:
A field trial aimed at increasing the productivity of declining old mango orchards was conducted during 1992–93 cropping season on 34 years old "Alphonso" mango trees which were pruned (dehorned) in march 1991. Effect of different doses of paclobutrazol (0.0,2.5,5.0,7.5 & 10.0 g. per tree) applied once (15th July, 92) through soil adopting different drenching methods, was studied in split plot design on flowering and fruiting behaviour. Result indicated that the flowering on treated trees at all the four concentrations (2.5, 5.0, 7.5, 10.0 g) was significantly advanced (11.36, 19.24, 26.76 & 28.80 days respectively over control) and profused (70.26,85.56,91.32 & 91.62 per cent, respectively) as compared to very less and stray flowering (2.98 per cent) recorded on non treated trees. Similarly, treated trees recorded very impressively high yield of 83.290, 103.800, 112.900 and 114.570 kg fruits per tree as against negligible yield of 1.21 kg fruits per tree on non treated trees. Amongst the four doses tried, a dose of 7.5 g recorded the highest percentage of bisexual flowers (21.70) and mean fruit set at pea stage (16.43 per panicle) compared to non treated control (10.49 per cent, 7.84 fruit set). Soil drenching close to the collar appeared to be the most easy and cost effective method amongst five methods tried. | |
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