Title from cover.
Papers presented to the International Fertiliser Society at a conference in Cambridge, on 10th December 2009.
Methods for determining the nitrogen fertiliser requirements of some major arable crops in France / V. Parnaudeau ... [et al.]
Determining nitrogen fertiliser requirements / by Hans Spelling Østergaard
An assessment of soil mineral nitrogen as a guide to the nitrogen fertiliser rate for winter wheat in England / by Jim H. Orson.
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Methods for determining the nitrogen fertiliser requirements of some major arable crops. ISBN 9780853102984. Published by International Fertiliser Society in 2009. Publication and catalogue information, links to buy online and reader comments.
