Availability of reduced N and carbohydrates for ear development of maize |
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| Authors: | Below F E Christensen L E Reed A J Hageman R H |
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| Affiliation: | Department of Agronomy, University of Illinois, Urbana, Illinois 61801. |
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| Abstract: | Changes in dry weights, reduced N, nitrate, and nitrate reductase activity of various plant parts of the above ground vegetation (stover) and ears of field grown maize were measured at intervals between anthesis and grain maturity. Nonstructural carbohydrate contents were also measured in some instances. Changes in dry weight and reduced N content were used to approximate net in situ photosynthetic and nitrate assimilation activities and to determine whether the availability of photosynthate or reduced N was limiting grain production. |
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