ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Arthrobacter globiformis andPseudomonas fluorescens were grown separately and together in flasks containing soil sterilized by gamma-irradiation. If the soil was held at 60% of its waterholding capacity (W.H.C.) and 25°C the viable cell yield of the 2 organisms in pure culture was approximately equal in 4 days while in mixed culture neither organism predominated and the total yield was about the same as in either pure culture. The pseudomonad dominated the mixed cultures when the incubation temperature was 10°C, when the soil was saturated and when glucose was added to the soil. The arthrobacter dominated the mixed culture when soil moisture was decreased to 40% W.H.C. The 10-day oxygen uptake by the 2 organisms grown together in sterile soil was much less than that shown by an inoculum prepared from a soil dilution.A. globiformis took up less oxygen when grown in the sterile soil than didP. fluorescens. In these short-term experimentsA. globiformis did not demonstrate competitive capabilities which would explain its more frequent occurrence in unamended soil thanP. fluorescens.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01372872
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