Corn Earworm Injury to Maize as Affected by Plant Density1
- Neil W. widstrom2
When plant densities were varied for five sweet corn, Zea mays (L.)> hybrids, a within-row spacing of 30.5 cm sustained significantly less corn earworm (CEW), Heliothis zea (Boddie), injury than spacings of 61.0 and 90.5 cm during 2 of 3 years. Differences among spacing means for CEW injury could not be removed through adjustment by covariance techniques involving tiller number, days to mid-silk, or husk extension as covariates. The present practice of avoiding non-competitive plots when recording CEW injury must be continued if valid comparisons among hybrids are to be made.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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