Department of Vegetable Science, G.B. Pant University of Agriculture and Technology, Pantnagar - 263 145, Uttraranchal, India.
*Corresponding author's
1Present address: Scientist, Field Research Laboratory (DRDO), C/O 56 APO, Leh.
An experiment was carried out at G.B. Pant Univ. of Agric. and Tech., Pantnagar during 1994–95, 1995–96 and 1996–97 to study the effect of bioregulators on bulb yield, quality and storability of onion cv. Pusa Red. Spraying of bioregulators appeared more beneficial than root dipping. Spraying of etherel (25 ppm) gave the highest bulb yield (153.76 q/ha) and plant height (58.33 cm). Application of GA (50 ppm) produced the maximum number of leaves per plant both as spray (12.33) and as root dip (12.53). Spray of etherel (50 ppm) resulted in significantly bigger (4.07 cm) and heavier (30.66 g) bulbs. TSS content of bulbs was highest (13.33° brix) under spray of GA (25 ppm). Rate of physiological loss in weight was comparatively slow in NAA (50 ppm) sprayed onion over control and other treatments.
Bioregulators, onion, quality, storability, yield
