YIELD ATTRIBUTES AND YIELD OF GOBHI SARSON (BRASSICA-NAPUS SSP OLEIFERA) AND TORIA (B-RAPA) UNDER DIFFERENT LEVELS OF NITROGEN, PHOSPHORUS AND FARMYARD MANURE IN MIDHILLS OF NORTH-WESTERN HIMALAYAS

Significant increase was observed in branches and siliquae/plant gobhi sarson (Brassica napus L. ssp oleifera DC. var annua L.) and toria [B . rapa (L.) Thell. emend. Metzger; syn B. campestris L. ssp oleifera ( Metzger) Sinsk. var toria] on application of N, P and farmyard manure. Higher levels of P and farmyard manure also significantly increased t he seeds/siliqua in gobhi sarson, but did not affect its 1 000-seed we ight. Yield of both the crops and consequently the total yield of the system (gobhi sarson + toria) increased significantly with N, P and fa rmyard manure application during both the years. When farmyard manure was applied, the response to N was significant up to 160 kg N/ha, at w hich 1 733 kg seed yield/ha was obtained, but in its absence the respo nse was significant up to 80 kg N/ha only. Increase in P rate also sig nificantly increased the yield of intercropping system, both where far myard manure was applied as well as not applied. Thus the application of 160 kg N/ha, 35 kg P/ha and farmyard manure @ 5 tonnes/ha increased the productivity.