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Chapter 186

Rhizosphere associations between grasses and nitrogen-fixing bacteria: effect of O2 on nitrogenase activity in the rhizosphere of Paspalum notatum

Dobereiner, J.; Day, J.M.; Dart, P.J.

Soil Biology and Biochemistry 5(1): 157-159

1973


ISSN/ISBN: 0038-0717
DOI: 10.1016/0038-0717(73)90103-x
Accession: 000185563

Nitrogenase activities, estimated by C2H2 reduction, in field samples of roots with adhering soil, washed roots, root surface soil and rhizosphere soil were 8.55, 7.60, 0.18 and 0.07 n moles C2H4 hr-1g-1. Sucrose addition enhanced nitrogenase activity in soil containing Azotobacter paspali.

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