LAUSR

The investigation was undertaken to determine the effect of spacing and cultivars on economic horticultural traits of onion. In trail different spacing was taken 7.5  10 cm, 10  10 cm, 12.5  10 cm and 15  10 cm. Three varieties viz. Agrifound Light Red, NHRDF Red-3 and NHRDF L-28 were used for study. The layout of experimental fi eld was laid down in Factorial Randomized Block Design with 3 replications. It is clearly revealed that the signifi cantly contrary, yield ha-1 was the highest (404.14 q ha-1) at closer spacing (10  10 cm) and the lowest was (362.47 q ha-1) at wider spacing 15  10 cm. The weight of individual bulb of onion (49.54 g) was increased with the wider spacing (12.5  10 cm). The bulb length (6.63 cm), diameter (6.97 cm) and number of scale per bulb (8.00) also the same trend in widest spacing (15  10 cm). The interaction of spacing and different cultivars had infl uenced signifi cantly on total soluble solids and ascorbic acid of onion bulb. Signifi cant effect was found among the varieties for total soluble solids, ascorbic acid, reducing sugar. Studied highest total soluble solids (13.960Brix), ascorbic acid (10.03), reducing sugar (8.50), non reducing (9.70%) and total sugars (17.70%) respectively.