scarifiers

After seed is cast, hook up a bar with light harrow scarifiers behind a horse or two to cover the seed.

Cheeseburger Gothic » Calling all Texans… 2009

These machines were followed up by great mechanized ploughs, scarifiers, scrapers, grading machines, and vast revolving hammers that pounded down the centre of the road, to make it a mighty fine fast highway, built especially so military machines can go rapidly from any place in the United States to Alaska for the defence of that country.

The Alaska Highway and Post-War Reconstruction and Rehabilitation 1942

In field practice, these tools are harrows and horse cultivators of various kinds; in home garden practice they are wheel-hoes, rakes, and many patterns of hand hoes and scarifiers, with finger-weeders and other small implements for work directly among the plants.

Manual of Gardening (Second Edition) 1906

Scabiosa Caucasica. scab on potatoes. scale, San José. scarifiers.

Manual of Gardening (Second Edition) 1906

You plough your fields and harrow them; you have your scarifiers to make the ground clean; and if after all this weeds should spring up, the careful cultivator roots them out by hand.

Sir Thomas More, or, Colloquies on the Progress and Prospects of Society Robert Southey 1808