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Greensnap Injury and Corn GrowthThere are usually two windows of potential greensnap injury, growth stages V5 to V8 and V10 to R2 (Figure 1). Growth regulator herbicides can significantly increase the potential risk of greensnap during the V5 to V8 window when the growing point is just emerging from the soil line.
While there was no significant difference in yield loss among the various breakage timings, yield loss increased significantly as percentage plant breakage increased.
Sources: 1Elmore, R.W. et al. 2003. Cron greensnap from extreme wind is influenced by several factors. Crop Management. Online: http://www.plantmanagementnetwork.org (verified 7/13/13); 2Nafziger, E. 2011. Damage in corn. Integrated Pest Management: The Bulletin. University of Illinois Extension No. 15 Article 5 (verified 7/14/2013); 3Elmore, R. et al. 2006. Storm induced breakage (greensnap). Integrated Crop Management. Iowa State University. Pg 199-200. IC—496. (verified 7/14/2011); 4Farnham, D. E. et al. 1999. Evaluation of yield loss caused by simulated green-snap injury. Iowa State University Extension. http://www.extension.iastate.edu. (verified 06/06/2014).