double digging

double digging noun

British a method of digging ground in a series of trenches two spits deep, mixing the soil of the bottom spit with manure, and then transferring the soil from the top spit of one trench to the top spit of the preceding one

Examples from the Web for double digging Historical Examples of double digging

Great part of this is utilised by ‘double-digging’ of it into the land, three years being required to dig the whole farm.

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