Dig over the ground, get rid of weeds and rake the tilth so the surface is even.
From the independent.co.uk
If your soil is heavy, fork in gypsum to improve the tilth or texture of the soil.
From the nzherald.co.nz
Fertilize with compost or manure to replenish nutrients and boost the soil's tilth.
From the sfgate.com
The soil should be dug over and cultivated to a fine tilth before sowing.
From the nzherald.co.nz
It was a level, well-drained sandy tilth, straight out of cropping, and being covered up.
From the thisisbristol.co.uk
Heavier soils can be dug when it's dry so frost action will help break clods to a tilth.
From the guardian.co.uk
The soil was graded to create an even slope with a fine tilth on top.
From the thisisbristol.co.uk
The earth should be well raked and all clods knocked down with a fork to get a fine, even tilth.
From the independent.co.uk
Peas are best grown during spring and autumn in a good loam, with full sun and a lovely friable tilth.
From the nzherald.co.nz
More examples
The state of aggregation of soil and its condition for supporting plant growth
Cultivated land: arable land that is worked by plowing and sowing and raising crops
Tilth can refer to two things : Tillage and a measure of the health of soil.
The state of being tilled, or prepared for a crop; culture; Rich cultivated soil
The fine crumbly surface layer of soil needed for a seedbed before sowing seed.
Often used to describe the general health of the soil including a balance of nutrients, water, and air. Soil that has good physical qualities is said to be in good tilth.
The condition of soil or land that has been tilled, especially with respect to suitability for promoting plant growth.
Soil condition in relation to lump or particle size.
The physical characteristics of the soil, Ie. a good tilth - a finely raked, crumbly structure with the right moisture content.