If residual herbicides are mixed with the glyphosate the green crop residue can reduce the residual herbicide activity. Cold, wet, and miserable weather continues, with temperatures well below normal. Frequent showers gave way to a deluge on Sunday night, with accumulation of 20 - 75 mm across the area. Unofficial heat unit accumulation of only 80 crop heat units from May 1st is far below anything in the last 15 years. Early, shallow planted corn is beginning to emerge, after 21 to 28 days in the ground.
Stands look good, although plants are yellow and stressed.
A few reports of corn beginning to rot, on heavier soils or when planted deep. Many producers are now switching to shorter day hybrids. Early planted soybeans are rotting in the ground, and will have to be replanted. Wheat fields are progressing slowly, with a myriad of colours from many different factors, from poor N application to pH problems to poor residue management last fall. No significant leaf diseases in wheat to date.