Some of the benchland soils are brown and of good tilth; others are gray, deficient in organic matter, and have rather heavy calcareous subsoils.
en.wikipedia.org This kind of compost, rich in plant remains and fulvic acids, is an excellent source of plant nutrients, but of little value with respect to long-term soil structure and tilth.
en.wikipedia.org The slower a rototiller moves forward, the more soil tilth can be obtained.
en.wikipedia.org The beetles make the dung unavailable to breeding pests by quickly rolling and burying it in the soil, with the added effect of improving soil fertility, tilth, and nutrient cycling.
en.wikipedia.org The husbandman was bound to carry out proper cultivation, raise an average crop, and leave the field in good tilth.
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