Effect of nitrogen and harvesting time on yield and quality of sorghum (Sorghum bicolor) intercropped with legumes

A field experiment was conducted during the rainy (kharif) season of 1998 a nd 1999, to Study the effect of intercrops, levels of nitrogen and harvesti ng time on yield and quality of forage sorghum [Sorghum bicolor(L.) Moench] under rainfed conditions. Sorghum intercropped with cowpea [Vigna unguicul ata (L.) Walp.] recorded significantly higher yield and quality of forage s orghum compared with sorghum alone and sorghum intercropped with clusterbea n [Cyamopsis tetragonoloba (L.) Taubert]. Nitrogen @ 80 kg/ha significantly increased the yield and quality of forage over the control and 40 kg N/ha. Forage and crude protein yields pf sorghum were significantly increased wh en the harvesting was done at 75 days after sowing over harvesting at 45 da ys, but being at par with the harvesting at 60 days.