Single digging Adopt this method on regularly-shaped plots, where it's important that the soil has an even texture. Single digging is also useful when large quantities of organic matter need to be incorporated.
Single Digging The most commonly practiced form of digging cultivates the soil to the depth of a spade blade (called a spit), usually about 25-30cm (10-12in) deep.
Single digging means to dig down to the depth of one spade. Double digging means to dig to the depth of one spade and then use the whole of the depth of the fork to loosen the subsoil below. Single Digging ...
 
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