What is it?

This pic was taken by someone touring the Huon Valley at Judbury recently.

I’m not sure what the truck is releasing, but I think it is lime.

This went on for 20 minutes or so and created a huge dust cloud on a still day.

There is some sort of story here, if just a humorous one. Only some of the stuff ended up on the ground.

The farmer should feel aggrieved at the delivery method.

But nice of him to lime the valley at his expense.

Or is it a cloud seeding operation?