Start Date

11-12-2008 12:00 AM

Description

Hybrid development and yield advancements have primarily been associated with increasing stress tolerance, i.e. modern hybrids yield more under a resource-limited environment relative to older hybrids. Yield potential per acre has increased dramatically in the past fifty years, while the potential yield per plant has changed little, if any. Hybrids tolerate their neighbors better today and are therefore able to withstand higher plant densities while still producing an ear. Older hybrids have significant lodging and/or barrenness when planted at today's seeding rates. A significant portion of the observed yield increase over the last several decades is directly correlated with increased plant populations.

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Dec 11th, 12:00 AM

Corn Plant Populations: A Critical Component in the Yield Equation

Hybrid development and yield advancements have primarily been associated with increasing stress tolerance, i.e. modern hybrids yield more under a resource-limited environment relative to older hybrids. Yield potential per acre has increased dramatically in the past fifty years, while the potential yield per plant has changed little, if any. Hybrids tolerate their neighbors better today and are therefore able to withstand higher plant densities while still producing an ear. Older hybrids have significant lodging and/or barrenness when planted at today's seeding rates. A significant portion of the observed yield increase over the last several decades is directly correlated with increased plant populations.

 

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