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acre acre foot alfalfa alkali alkali soil amount of water applied bottom canal cement cent clay Colorado condition construction corn cost crop cubic cubic foot cultivation depth ditch drainage drill drouth early earth eight evaporation fall farm farmers fertilizing field flooding flow flume foot four fruit furrows gallons gate give grade grain ground growers growing growth harrow head hight horse-power humus inches deep iron irri irrigation land laterals loam lower manure method miner's inches moist moisture mulch necessary º º orchard pipe plants plat plow potash potatoes pounds pump quantity raise require reservoir ridges roots rows sand sandy season seed seepage shown in Fig side six inches slope soaking soil spring stream subirrigation subsoil sufficient supply surface tion tivation trees trenches twenty usually velocity vines vitrified wheat wheel wind windmill winter
Página 4 - For the land, whither thou goest in to possess it, is not as the land of Egypt, from whence ye came out, where thou sowedst thy seed, and wateredst it with thy foot, as a garden of herbs...
Página 116 - Each plug is surrounded by a larger stand pipe, setting loosely on top of the distributing pipe, open at the bottom and reaching to the surface of the ground, for the purpose of keeping the dirt away from the outlet, and rendering it accessible at all times for inspection. The pipes are connected with mains leading from a reservoir. The...
Página 118 - These are shaped to cylindrical forms and on the edges to true radial lines, so that when put together they form a perfectly cylindrical pipe. The flat edges of the staves are essential to enable the empty pipe to resist the pressure from the overlying earth. To join the ends of the staves a thin metallic tongue is inserted, which, being a trifle longer than the width of the stave, cuts into the adjoining ones. This joint is very tight and easy to make. The confining bands are of round or flat iron,...
Página 264 - The cedema of the tomato is a swelling of certain parts of the plant brought about by an excess of water which stretches the cell walls, making them very thin and the cells very large.