subsoiler

[ suhb-soi-ler ]

/ ˈsʌbˌsɔɪ lər /

one who operates a subsoil plow.

Origin of subsoiler

First recorded in 1850–55; subsoil + -er¹

Let Sam take the plough, and have young Thompson follow with the subsoiler.

The Fat of the Land |John Williams Streeter
In planting, plow both ways with a coulter and subsoiler, then dig out.

The Apple |Various
They should be thrown out as deep as can be done with a plow, then followed by subsoiler twelve to eighteen inches deep.

The Apple |Various
The ordinary plough was to be followed in this case by a subsoiler, to stir the earth as deep as possible.

The Fat of the Land |John Williams Streeter

I prefer young, thrifty trees, planted in furrows made with a plow and subsoiler.

The Apple |Various