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Chapter 348

Effect of ammonium and nitrate nitrogen upon photosynthate supply and nitrogen fixation by soybeans

Latimore, M.J.; Giddens, J.; Ashley, D.A.

Crop Science 17(3): 399-404

1977


ISSN/ISBN: 0011-183X
DOI: 10.2135/cropsci1977.0011183x001700030015x
Accession: 000347482

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In pot trials in the glasshouse in 1974 and outdoors in 1975 with soyabean Bragg the effects of stage of growth and of NH4-N and NO3-N on translocation of 14C, N fixation (acetylene reduction of intact nodules), and on accumulation of DM and N were studied. During pod formation little 14C was exported to nodules following photosynthesis of 14CO2 and N fixation was low.

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