The spade is the best tillage tool in late autumn and the digging fork in summer.
In the fall you work the soil like this, that he comes clumped into the winter. Then the frost can best affect it. The coarse structure can only be achieved with a spade. Edited with the digging fork, tear up the clods of soil and then lie too densely. In the summer it doesn't matter that much. Then the digging fork is the most suitable tillage implement, because their individual tines only have to overcome little resistance when penetrating the earth, which makes digging much easier. The right shape of the digging fork is very important (see sketch).