Response of cowpea Vigna unguiculata (L.) Walp. to Rhizobium seed inoculation

Abstract

Field experiment was carried out at the Instructional Farm of the University of Agricultural Sciences, Bangalore to study the response of cowpea to seed inoculation with selected Rhizobium strains. Significant increase in yield, plant top dry weight and leghaemoglobin content of nodules were noticed in plants inoculated with the strains 8 and 12, Correlation studies showed significant correlation between leghaemoglobin content of nodules, plant top dry weight and final grain yield. No significant correlation was observed between nodule number and nitrogen content of plant top on Thirtieth day of growth and final grain yield.