Show DEPTH OF THE TILE DRAINS type of sot soil and fall of land must budt bo be taken into consideration before starting work by it II 0 in putting in a system of tile drainage we must const consider der the type of the soil eoll to be drained as aa well as aa the fall of the land before we w decide upon the size of the tile and the depth it Is to be placed on a coarse soil where the object of the drainage system la Is to remove the soil water from around the roots of the plants the tile should be laid three or four feet deep but on a clay soil I 1 bellevo believe that the tile should be laid as aa shallow as aa Is consistent with the climatic conditions and the fall of the land on clay soils the chief object of tile drainage Is to remove the surface water as aa rapidly as possible after heavy rains before it ruins the growing crops to do this it must have an easy access to the tile and for this reason they should not be put down more than two or two and a half feet deep on a clay soil it requires longer for the tile drainage system to become efficient after it la Is installed because it takes longer for the watercourses water courses to form through the cracks decayed rout passages and animal burrows hence we will secure better immediate results from a shallow system of drainage than when the tile are placed deep it has required a number of years for some of tho the systems of drainage to become efficient in clay soils and few farmers can afford to wait a number of years yeara for results on one of our farms the tile drains were installed 20 years ago and are doing far better work today than they did the first ten years they were put in these drains were put in from three to four feet deep and for the first few years they did very poor gervace |