I think the question is, are these panels less expensive than taking normal panels, maybe with LEDs to help growth at night, and adding solar tracking to optimize solar generation, plant shading, and plant growth?
Have the panels mostly cover the crops in the day time (improve yields) and export to the grid (reduce or eliminate electricity costs), then turn on LEDs for some portion of the night (improve yields) and import enough to offset your exports (use any excess you have from the day time).
In those situations, the additional cost could be zero or even a net benefit with some increase in crop yield.