Farm Development An Introductory book in Agriculture Including a Discussion of
Farm Development An Introductory book in Agriculture Including a Discussion of
W M Willet Martin Hays
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) The cost per acre. The cost per acre where tiles are laid at regular intervals apart can be closely estimated by using the prices per thousand for drain tiles and adding to this the above estimates for the cost of labor. There are many cases where tile drains are economical where it is difficult to figure the cost per acre, since instead of systematically covering flat areas, the drain follows some low slough or carries Figure 108. Filling the tile ditch with the re- versible road machine. 2l...6 FARM DEVELOPMENT the water from some low or otherwise bothersome spot in the field. Here the cost and probable benefit must be compared in some general way, rather than by using the acre as the unit. MAKING OPEN DRAINS Capstan plow ditchers. Very large ditching plows are used for making open ditches in sloughs and in level lands where there are long stretches of alluvial till or Figure 109. Tile-ditching machine opening a 4-foot ditch. clay sufficiently free from stones to cause no serious interference to the coulters or lay of the capstan plow ditcher.
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