At 60 DAS, under 15 days late sowing, all the varieties except K 8962 recorded non-significant increase in plant biomass over normal sowing in 2006-07 but in 2007-08, all varieties except Halna, NW 1076 and HP 1633 had significant increase. However, under 30 days late sowing all the varieties showed significant increase in plant biomass over normal sowing in both years. In contrast to above stage, at 90 DAS, significant reduction in plant biomass was observed under late over to normal sowing and magnitude of reduction was more under 30 days late sowing in comparison to 15 days delayed sowing. In 2006-07, under 15 days late sowing, only two varieties viz., Halna and Sonalika had non-significant decrease in plant biomass as compared to normal sowing, however, rest of the varieties had significant decrease. In 2007-08, non-significant decrease was observed in Halna, HP 1744 and NW 2036 while others showed significant decrease under 30 days late sowing, all the varieties resulted in significant decrease in plant biomass over normal sowing in both years. However, maximum plant biomass was observed in Raj 3765 followed by Sonalika and UP 2425 and in 2007-08, highest biomass was found in Sonalika followed by HD2285 and Halna.

Keywords: varieties, biomass. Non-significant, late sowing.