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Show 16 Bulletin No. 173 ( 7. From 15 to 25 acre- inches of water gave the best results with corn. 8. The yield of wheat was less affected by water than that of any of the other crops. The best quantity to use would probably be about 15 inches, although there was a slight increase in yield for larger quantities. 9. Oats gave good returns for quantities of water ranging between 15 and 30 acre- inches. Probably the lower quantity would be most profitable unless water were very plentiful. 10. The proper diversification of crops makes possible the most efficient use of irrigation water. 11. The proper amount of irrigation water to use must be based on a great variety of physical and economic factors that vary with each set of conditions. The facts presented in this bulletin are intended to serve as a guide to help each farmer to decide how much water he is justified in using rather than to lay down any definite set of rules to be followed under all conditions. LIST OF UTAH STATION BULLETINS DEALING WITH IRRIGATION ON DEEP SOILS OF CACHE VALLEY No. 104. Widtsoe, J. A.- The Storage of Winter Precipitation in Soils. 105. Widtsoe, J. A.- Irrigation Investigations- Factors Influencing Evaporation and Transpiration. 115. Widtsoe, J. A. and McLaughlin, W. W.- Movement of Water in Irrigated Soils. 116. Widtsoe, J. A.- The Production of Dry Matter with Different Quantities of Irrigation Water. 117. Widtsoe, J. A. and Merrill, L. A.- Yields of Crops with Different Quantities of Irrigation Water. 11- 8. Widtsoe, J. A. and Merrill, L. A.- Methods for Increasing the Crop- producing Power of Irrigation Water. 119. Widtsoe, J. A. and Stewart, Robert- The Effect of Irrigation on the Growth and Composition of Plants at Different Periods of Development. 120. Widtsoe, J. A. and Stewart, Robert- The Chemical Composition of Crops as Affected by Different Quantities of Irrigation Waters. 133. Harris, F. S.- Irrigation and Manuring. Studies, Pt. I. 146. Harris, F. S.- The Irrigation of Wheat. 154. Harris, F. S. and Pittman, D. W.- Irrigation and Manuring Studies, Pt. II. 156. Harris, F. S.-- The Irrigation of Sugar- beets. 157. Harris, F. S.- The Irrigation of Potatoes. 159. Harris, F. S. and Bracken, A. F.- Soil Moisture Studies under Irrigation. 167. Harris, F. S. and Pittman, D. W.- The Irrigation of Oats,, i ( College Series No. 144) |