Just got this from South Dakota Igrowhttp://igrow.org/agronomy/corn/drought-and-heat-effects-on-corn-production/?utm_medium=email&utm_campaign=Pest-Crop-2016-07-22&utm_content=Pest-Crop-2016-07-22+CID_5bce854210e33684825bb802211b5908&utm_source=rainmail&utm_term=Drought%20and%20Heat%20Effects%20on%20Corn%20Production