The green strip in this field had 2 tons/acre of PRO CAL 40 applied ahead of the soybeans last year. This year it is planted to corn and you can see the visual difference where the gypsum was applied. The effects of gypsum applications can be realized for at least three years and even longer in heavier applications (greater than one ton).
One of the images is a close up of the corn in the area where the PRO CAL 40 gypsum was applied the previous year. It was applied at an angle across the rows so you can see it is not caused by something that was applied by the planter. Healthier soils make healthier crops.
PRO CAL 40