General Crop Production Extension:

April 15, 2013. Brian Wallheimer, Purdue University. Nitrogen key to uptake of other corn nutrients, study shows. Purdue Agriculture News. http://www.purdue.edu/newsroom/releases/2013/Q2/nitrogen-key-to-uptake-of-other-corn-nutrients,-study-shows.html

Many factors contribute to advancing corn yields. Martha Blum, AGRI-NEWS, Jan. 4, 2011. Article based on an invited presentation by Dr. Vyn to the American Seed Trade Association 65^th Corn & Sorghum Research Conference, Chicago, IL on Dec. 9, 2010
http://www.agrinews-pubs.com/articles/news/latest-news/default.asp?article=51EFBFD6C4197D9AC3F99B0AE785359D5318B75F2119F1B8

Ciampitti, Ignacio, Yanbing Xia, Jim Camberato, and Tony J. Vyn. 2010. “Plant density consequences on nitrogen uptake dynamics of maize plants from vegetative to reproductive stages”. Proceedings, 40^th North Central Extension-Industry Soil Fertility Conference, Des Moines, Iowa. November 17-18, 2010.  PDF

Purdue: Does no-till stunt growth in corn fields? Feb. 18, 2010 (Other News) Farm and Dairy.
http://www.farmanddairy.com/news/purdues-tony-vyn-finds-growth-stunting-in-corn-fields/14268.html

Murrell, T.S., and T. J. Vyn. 2010. Precision management of root zone potassium for corn: Considerations for the future. Better Crops Vol. 94 (No. 4), p. 24-25. http://www.ipni.net/ppiweb/bcrops.nsf/$webindex/7C1B2FB0205F44F3852577EB00574F8F/$file/BC+4+2010+pg+24.pdf

Increasing corn yields. Author: Cindy, Corn Commentary, National Corn Growers Association (November 25, 2009)
http://corncommentary.com/2009/11/25/increasing-corn-yields/

Manganese deficiency in soybeans? Experts advise foliar application.”  Ag Answers (April 16, 2009) Agricultural Communications Staff writer: Julie Douglas. http://www.agriculture.purdue.edu/aganswers/story.asp?storyID=5313

Boomsma, C.R., and Tony J. Vyn. 2007.  Plant population influences on maize physiological responses to nitrogen application.  Proceedings of the North Central Extension-Industry Soil Fertility Conference held Nov. 14-15, 2007 in Des Moines, IA. Proceedings Vol. 23:136-144.

Yin, X., and T.J. Vyn. 2005. Critical leaf potassium is higher in no-till soybean. Better Crops 89 (2):1-5.

Yin, X., and T.J. Vyn. 2005. High soybean yield can mean higher concentrations of isoflavones. Better Crops 89 (4):13-15.

Rethinking Rotations : Less Soybean and More Corn in the Corn-Belt?  Vyn, Tony J.  2004.  Pages 7-9 in Pest and Crop Newsletter No. 26 (Oct. 22, 2004), Purdue University.

“Don’t take out poor no-till performance on your soil” Successful Farming Agriculture On-line (March 16, 2004) available at http://www.agriculture.com/default.sph/AgNews.class?FNC=sideBarMore__ANewsindex_html___51436

Storms Shouldn't Rain on Farmers' Planting Parade (Ag Answers, May 9, 2003)

Purdue Experts: Harvest Wetter to Avoid More Yield Loss

Crop Response to Moisture Stress (July 24, 2002)

Corn Planting Recommendations When Wet Spring Delays Planting (Agriculture Online News, June 4, 2002)]

Rules for Planting Corn in a Wet Spring (Ag Answers, May 23, 2002)

Nitrogen Management for Corn in a Wet Spring (Ag Answers, May 23, 2002)

Nitrogen Recommendations for Corn in a Wet Spring (AgWeb.com, May 23, 2002)

Sidedressing Nitrogen in a Wet Spring (Agriculture online News, May 23, 2002)
 

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