If it's on Google Maps . . . .

[mfezela]

I drove tractors as a young farmer (well, young son of farmer really) relatively easy to get one set of furrows straight, but inevitability the next run wasn't perfectly parallel. This looks too perfect to be true. View in satellite mode.

Dropped pin
Near Elton, Ludlow, UK
https://maps.app.goo.gl/146QAMLYf82YtyNdA

[Taylor]

Might it be one of those new fangled GPS enabled tractors?

[fatbikephil]

Neat - aren't tractors controlled by GPS nowadays hence the accuracy?

[voodoo_simon]

Aliens

[sean_iow]

I saw a huge tractor that had a plough that folded out each side so ended up 30 foot wide or more. If you're plowing 30+ furrows at a time you've only got to get the junctions between passes right and the ones in-between have to be parallel.

Not like the old days doing a furrow at a time behind a grey fergie.

Plus the advantage of gps as has been mentioned.

I was chatting to one of the contractors doing spraying. When they harvest the wheat the combine records the yield so they know how much came from each part of the field. When they spray the data is used to adjust the amount of fertiliser as required to optimise the usage/yield.