[ProtectOurFreedom]

I was just pointing out what I thought was the extreme impracticality of using in-ground wire guidance. GPS has been used for plowing for quite a while now and is going to drive a lot of smart ag.

[Rebelbase]

The most impressive use of GPS in farming I’ve seen is at the largest contiguous acreage farm east of the Mississippi which has 40,000+ acres.

Thousands of soil samples have been taken over the years in a grid fashion. The fertilizing process is guided by GPS which automatically controls the disbursement of minerals based on what the soil in each grid needs.

Saves them big bucks by not applying certain fertilizers to a soil that doesn’t need it.

https://tinyurl.com/y4q43v3z

https://www.farmprogress.com/large-farm-stresses-soil-fertility-levels

[Yo-Yo]

Yes, you are correct. But in the 1960s, in-ground wire guidance was probably the only technology with enough precision for the purpose, and it was only a demonstration program.