Soils conditions this spring were not conducive to ideal corn plantings.With pasty subsoils that refused to dry out it lead to many a grower squeezing his ground and creating sidewall compaction with double disk openers.As usual as the compacted ground dried it lead to a restrictive layer that developing nodal roots could not penetrate.The end resolve is what you see in the development of the plants roots on the left in the photograph above.Tomahawk roots restrict the plants ability to search as much soil volume leading to less moisture and nutrient uptake which leads to less yield.