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Reicks, G
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Authors
Clay, D.E
Clay, S.A
Reicks, G
Horvath, D
Topics
Spatial and Temporal Variability in Crop, Soil and Natural Resources
Type
Oral
Year
2008
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1. Plant and N Impacts on Corn (Zea Mays) Growth: Whats Controlling Yield?

Studies were conducted in South Dakota to assess mechanisms of intraspecific competition between corn (Zea mays) plants. Treatments were two plant populations (74,500 and 149,000 plants ha-1), three levels of shade (0, 40, and 60%) on the low plant population, two water treatments (natural precipitation and natural + irrigation), and two N rates (0 and 228 kg N ha-1). In-season leaf chlorophyll content was measured. At harvest, grain and stover yields were quantified with grain 13C-discrimination... D.E. Clay, S.A. Clay, G. Reicks, D. Horvath