EFFECT ON GROWTH AND YIELD OF WHEAT VARIETIES UNDER FURROW IRRIGATED RAISED BED SYSTEM (FIRBS) BY DIFFERENT METHODS OF NITROGEN PLACEMENT.

A field experiment was conducted during rabi seasons of 2001-02 and 2002-03 under farmers' participatory research approach at village Khera Murar of Bawal block in district Rewari (Haryana). The experiment consisted of three nitrogen placement methods (N fertilizer applied in furrows only, N fertilizer applied on top of bed only and N fertilizer broadcasting) in main plots and six varieties (WH-147, WH-283, C-306, PBW-343, WH-896 and HD-2687) in sub plots of split plot design having four replications. Application of N on top of bed caused an increase of 12.5 and 28.8 per cent in grain yield, 11.9 and 28.2 per cent in straw yield over broadcasting and application of N in furrows, respectively during 2001-02. Corresponding increases for 2002-03 were 11.5 and 30.3 per cent for grain, 11.2 and 29.2 per cent for straw yield. PBW-343 produced significantly higher grain yield over all other varieties except HD-2687. [ABSTRACT FROM AUTHOR]