questions: asking for fertilizer requirement in cowpea. 
 answers: apply fym 25 t/ha, azospirillum and phosphobacteria 2 kg /ha and n 25 kg and p 50 kg/ha for irrigated crop. apply fym at 12.5 t/ha and n 12.5 and p 25 kg/ha for rainfed crop.fertilizers can be applied in several split doses at fortnightly intervals.