Soil with naturalized population of Bradyrhizobium japonicum
(1,000-10,000 bacteria/g. of soil)- NOA (Argentina) 1996/1997 and 1997/1998

Professionals in charge:
Ing. Agr. León J. (Olmedo Agropecuaria S.A.)
Ing. Agr. Zelarrayan E. (EEA-INTA Famaillá)
Ing. Agr. Servidio D. (Laboratorios Biagro S.A.)


Professionals in charge:
Ing. Agr. Stegman de Gurfinkel B.
Ing. Agr. Gonzalez Fiquini M. F.
Ing. Agr. Pacheco Basurco J. C.
Ing. Agr. Perticari A. (IMYZA-INTA Castelar)