Research Article Winter Wheat Row Spacing and Alternative Crop….pdfVIP

Hindawi Publishing Corporation International Journal of Agronomy Volume 2015, Article ID 369243, 8 pages /10.1155/2015/369243 Research Article Winter Wheat Row Spacing and Alternative Crop Effects on Relay-Intercrop, Double-Crop, and Wheat Yields Leah Sandler,1 Kelly A. Nelson,1 and Christopher Dudenhoeffer2 1 Division of Plant Sciences, University of Missouri, Novelty, MO 63460, USA 2 Greenley Research Center, University of Missouri, Novelty, MO 63460, USA Correspondence should be addressed to Kelly A. Nelson; nelsonke@ Received 28 May 2014; Revised 8 December 2014; Accepted 17 December 2014 Academic Editor: Kent Burkey Copyright 漏 2015 Leah Sandler et al. his is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In Missouri as well as much of the Midwest, the most popular double-cropping system was winter wheat (Triticum aestivum L.) followed by soybean (Glycine max (L.) Merr). hese two crops can also be used in an intercrop system, but optimal row spacing was important to increase crop productivity. Research was conducted to evaluate (1) winter wheat inter- and double-crop production systems, using a variety of alternative crops, and (2) the impact of diferent wheat row spacings on intercrop establishment and yields within the various cropping systems. Field research was conducted during droughts in 2012 and 2013. Spacing of wheat rows impacted wheat yields by 150 kg ha鈭? , as well as yields of the alternative crops. Narrower row spacings (150 kg ha鈭? ) and the double- crop system (575 kg ha鈭? ) increased yield due to the lack of interference for resources with wheat in 2013. Land equivalent ratio (LER) values dete