It can never be stated enough how important it is that growers know exactly what traits and technologies they've purchased and what hybrids they should plant in each field.In the case of the grower above he had been planting glyphosate resistant corn when he moved to this field and filled up his planter with a non glyphosate resistant hybrid.As you can see when he sprayed the field in the second week of June with Glyphosate the non - glyphosate resistant corn was killed off. The small corn shown in these shots is now the new June 15th replant corn. Every year someone somewhere makes a costly mistake like this.This is exactly why EXPLICIT FIELD PLANS of what hybrids a grower should plant in each field should be well laid out on paper ahead of the planting season.