Open Access Research Paper Views (400) Download (12) Investigating the interactive effect of humic acid and different levels of potassium fertilizer on yield components of cowpea Sahar Motaghi, Tayeb Saki Nejad, Mani Mojadam J. Bio. Env. Sci.4( 6), 456-464, June 2014. Key: CowpeaHumic acidPotassium fertilizerYield Details
