Other essential conditions of success will commonly include the liberal application of potash and phosphatic manures, and sometimes chalking or liming for the leguminous crop. As to how long the leguminous crop should occupy the land, the extent to which it should be consumed on the land, or the manure from its consumption be returned, and under what conditions the whole or part of it should be ploughed in - these are points which must be decided as they arise in practice.
When the whole ground has been thus treated, a moderate liming will, in general, be useful, especially on heavy clay soils.
When recommendations are made about liming land it is necessary to indicate more precisely than is usually done which of the three classes of material named above - chalk, quicklime or slaked lime - is intended.
Among the subjects deserving notice may be mentioned the practice of steeping and liming seed corn as a preventive of smut; changing every year the species of grain, and bringing seed corn from a distance; ploughing down green crops as manure; and feeding horses with broken oats and chaff.
Weeds, therefore, which need sour conditions for development are checked by liming and the better grasses and clovers are encouraged.
This is easily done in liming or measuring tanks of known capacity, into which the juice is run from the mill.
The method of liming the tiles (chaulage) consists in dipping them into a liquid mixture of lime and water.
The first half of the 17th century was a period of agricultural activity, partly due, no doubt, to the increase of enclosed farms. Marling and liming are again practised, new agricultural implements and manures introduced, and the new crops more widely used.