What Are the Lasting Impacts of Early-Season Problems in Corn?

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2007-11-29
Authors
Elmore, Roger
Abendroth, Lori
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Proceedings of the Integrated Crop Management Conference
Iowa State University Conferences and Symposia

The Iowa State University Integrated Crop Management Conference is Iowa's premier crop production education event. No other program in Iowa brings together the diverse range of topics, slate of expert presenters and results of the latest University research.

The ICM Conference offers workshops focusing on the latest in crop production technology. Experts from Iowa and surrounding states will provide research updates and results in soil fertility, soil and water management, crop production and pest management.

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Do early season problems 'disappear' in corn7 Plant-to-plant and in-field variability was a concern across numerous corn fields in 2007. In addition, fields had uneven seeding depths, shallow nodal root systems, sidewall compaction, and other problems were common. We will discuss the importance of uniformity in fields relative to yield partitioning and yield determination in corn. First we present a primer of early season root systems and then we present a list of 9 early-season management/environmental factors that affect plant-to-plant and in-field variability and reduce yield potential. Anything that disrupts early-season growth can have a negative impact on yield. Here we will discuss only nine.

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