Irrigation Farming: A Handbook for the Proper Application of Water in the Production of Crops

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 nitrogen orchard pipe plants plat plow potash potatoes pounds pump quantity raise require reservoir ridges roots rows sand season seed seepage shovel shown in Fig side six inches slope soaking spring stream subirrigation subsoil sufficient supply surface tile tion tivation trees trenches twenty usually velocity vines vitrified wheat wheel wind windmill winter