Description:
Partial nitrogen supply by biologically fixed nitrogen may well be an environment friendly and energy-saving improvement in production of cereals. Nitrogen fixing associations of various Hungarian rice cultivars were established with associative diazotrophic bacterium Azospirillum brasilense and endophytic diazotroph Herbaspirillum seropedicae. The cultivars expressed different susceptibility to accept the associations, as manifested in root and shoot growth. Established pattern of colonizing bacteria within the plantlets well correlated with the host plant responses. Growth promoting effect of A. brasilense was unambiguous while H. seropedicae elicited inconsequential plant reactions. Moreover, immobilized inoculum formula was developed in order to support protection and competitiveness of bacteria in the soil and provide agrotechnical advantages in the field.