Assume that a farmer wants to produce 6 tons per acre of hay. The 7-acre field has a fi capacity of 15% and a wilting point of 6%. The crop will extend its roots 1 foot into the soil and will use all of the available water in this volume of soil. The hay has a transpiration ratio of 500 lbs water/l lb dry matter. It only rains 10 inches during the growing season, but the plants are able to use all of that water. How much irrigation w will have to be added (in both acre-inches and in pounds of water per acre) so that the farmer will meet the yield goal?

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a Bulk density weight of dry soil volume of soil 800 550 145 g cm 3 b Gravitational water water ava... View the full answer