The autumnal subsidence of the river was followed by shallow ploughing performed by oxen yoked to clumsy wooden ploughs, the clods being afterwards levelled with wooden hoes by hand.
Next comes a second ploughing of the fallow; and afterwards, in the latter end of June, the mowing of the meadows begins.
Green manures are crops which are grown especially for the purpose of ploughing into the land in a green or actively growing state.
The Karens and Shans who settle in the plains expend much more care in ploughing and weeding their crops.
The summer fallow with repeated ploughing was its basis.
The fallow received a third ploughing in September, and was sown about Michaelmas.
In the operation of ploughing the furrow slice is separated from the soil below, and although in humid soils this layer may be left to settle by degrees, in semi-arid regions this loosened layer becomes.
Some regard the legend as a chthonian myth, Aea (Colchis) being the under-world in the Aeolic religious system from which Jason liberates himself and his betrothed; others, in view of certain resemblances between the story of Jason and that of Cadmus (the ploughing of the field, the sowing of the dragon's teeth, the fight with the Sparti, who are finally set fighting with one another by a stone hurled into their midst), associate both with Demeter the corn-goddess, and refer certain episodes to practices in use at country festivals, e.g.
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.
By growing mustard and ploughing it in green the ground is made obnoxious to the wireworms, and may even be cleared of them.