First Solar Powered Center Pivot Irrigation System Launched in Nebraska
brownfieldagnews.com
brownfieldagnews.com
There is an emerging agriculture known as Regenerative Agriculture [1] (RA) which is sometimes known as "no till" farming, which, in theory, reduces the need for massive field crop irrigation. Let me add that the move to RA from present systems is a long way off, so the act of adding solar to the present process to reduce carbon is still beneficial.
Edit: searching around, that sounds like a 10 tower. The article said they've got a 7. So I think they've got a lot more than I initially guessed and slightly less than your post guessed.