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[en] In the present work the contributions from combined N-sources and symbiotic nitrogen fixation to the nitrogen supply of field-grown peas and field beans were evaluated by means of 15N fertilizer dilution. The effect of N-fertilizer, supplied at sowing and at different stages of plant development, on nitrogen fixation, yield and protein production in peas, was studied in pot experiments. (author)
Source
Feb 1985; 91 p; ISBN 87-550-1076-8; 
; CONTRACT EM-2244-302; Also available from Risoe Library, DK-4000 Roskilde, Denmark
; CONTRACT EM-2244-302; Also available from Risoe Library, DK-4000 Roskilde, Denmark