tilth

n.

耕作，耕种；耕地的情况；

1. The root distribution in different tilth layer is different.
   各品种在耕层不同深度分布也不同。

Tilth mellowing.
Tilth index : An approach to quantifying soil tilth
Soil tilth: a review of past perceptions and future needs.
Tilth index: an approach to optimize tillage in rice–wheat system
Changes in Soil Fertility and Tilth under Shifting Cultivation
Organic matter and soil tilth in arable farming: Management makes a difference within 5–6 years
Soil physical quality: Part II. Friability, tillage, tilth and hard-setting
Long-Term Effects of Tillage Method on Soil Tilth Independent of Wheel Traffic Compaction1
Process for establishing optimum soil conditions by naturally forming tilth
The Effect of Gang Angle of Offset Disc Harrows on Soil Tilth, Work Rate and Fuel Consumption