The combination of the characteristics of soil crumb structure, porosity, and ease of tillage
Tilth is land which has been prepared for growing crops by plowing and fertilization In discussions of composting and organic gardening, the phrase "the tilth of the soil" is often used to describe the general health of the soil including a balance of nutrients, water, and air
Good tilth is a sign of healthy soil organisms While digesting organic material, bacteria secrete gum and slime-like matter in the soil This works like glue, binding soil particles and humus together to form aggregates The aggregates are crumb-like and allow for good air circulation and water drainage in the soil Well-aggregated soil is regarded as having good tilth The addition of organic material will feed microorganisms and thus improve tilth
The physical condition of the soil as related to its ease of tillage, its fitness as a seedbed, and its impedance to seedling emergence and root penetration (USEPA, 1994)
The physical condition of soil relative to the ease of plant growth The "fluffiness" of the soil, so roots grow easily
Physical condition of soil, especially in relation to its suitability for planting or growing a crop. Factors that determine tilth include the formation and stability of aggregated soil particles, moisture content, degree of aeration, rate of water infiltration, and drainage. The tilth of a soil can change rapidly, depending on environmental factors such as changes in moisture. The objective of tillage (mechanical manipulation of the soil) is to improve tilth, thereby increasing crop production; in the long term, however, conventional tillage, especially plowing, often has the opposite effect, causing the soil to break down and become compacted