SYMBIOTIC EFFECTIVENESS OF BRAZILIAN RHIZOBIAL STRAINS IN IMPROVING N-FIXATION AND PRODUCTIVITY OF COWPEA IN MINNA, SOUTHERN GUINEA SAVANNA OF NIGERIA

• Federal University of Technology Minna (NG)

tal como impresso: Olaotan Abimbola ADEDIRAN

• Federal University of Technology Minna (NG)

tal como impresso: Akim Osarhiemen OSUNDE

• Federal University of Technology Minna (NG)

tal como impresso: Abdullahi BALA

• International Institute of Tropical Agriculture (NG)

tal como impresso: Mahamadi DIANDA

• Federal University of Technology Minna (NG)

tal como impresso: Haruna IBRAHIM

• Ahmadu Bello University (NG)

tal como impresso: Olusoji Olaolu OLUFAJO

• Federal University of Technology Minna (NG)

tal como impresso: Johnson Akinade OLADIRAN