agriculture production - ballpark of 4000-10000kg per acre sold at $1/kg, 2 harvests/year, i.e. $8000-$20000. Solar per acre - 300 days, 10 hours/day, 200Wt/m2, $0.04/KWh - $160/day at 50% coverage, ie. $50K/year.
In general - the plants efficiency is less than 5%, ie. at least 4x less than that of solar panels, and at the end everything is about energy (and information as both are opposite of entropy (ie. life and technology is about decreasing of entropy in the local neighborhood by shifting/exporting it out of the neighborhood into the wider environment))