This was a summer of water deficit. With the current weather pattern trends, there is concern on what soil moisture reserves will be for the 2013 crop. One thing that can be done to replenish and manage soil moisture reserves is to reduce tillage.
Iowa State University
Licht, Mark A. and Al-Kaisi, Mahdi, "Less Tillage for More Water in 2013" (2012). Integrated Crop Management News. 134.
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