Some physiological studies of diazotrophic bacteria associated with maize in a temperate and a tropical soil In:Nitrogen fixation with Non-legumes

Abstract

Previous studies on Azospirillum spp. (Day and Dobereiner, 1976) and Klebsiella oxytoca isolated from wheat roots in Turkey (Cakmacki et al., 1981) indicated little activity below 24°C and high activity at 30–40°C In this study the effect of temperature on the growth and acetylene reduction activity, (ARA) of two temperate-soil bacteria and a tropical-soil isolate is reported.