Nitrogen Fixation by Free-living Bacteria in the Soil and in the Canopy of Douglas Fir
- 1 June 1974
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of Botany
- Vol. 38 (3) , 765-772
- https://doi.org/10.1093/oxfordjournals.aob.a084865
Abstract
Nitrogen fixing bacteria have been isolated from the soil and the leaves of Douglas fir. Measurements, taken at monthly intervals using 15N, have shown that small quantities of nitrogen are fixed on the leaves and in the various soil layers and that the highest rates of fixation occur in the spring. Further studies with 15N have shown that the products of nitrogen fixation in Douglas fir soils are available for growth of seedlings and for denitrification.This publication has 0 references indexed in Scilit: