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<br />Appendix Table 1 - COMPARISON OF CROP ROTATIONS - CORNER MANAGE~ffiNT.: PROBLEMS, <br />AND NET RETURNS ON' CENTER PIVOT SYSTEMS AND CORNEM 1977 {Con' t} <br /> <br />Rotation <br /> <br />Sprinkler <br />acreage <br /> <br />12. 50% malt barley <br />50% potatoes <br /> <br />150 A <br /> <br />13. 67% malt barley <br />7% feed barley <br />26% potatoes <br /> <br />130 A <br /> <br />14. 67% malt barley <br />7% feed barley <br />26% potatoes <br /> <br />BOA <br /> <br />15. 67% malt barley <br />7% feed barley <br />26% potatoes <br /> <br />130 A <br /> <br />16. 67% malt barley <br />7% feed barley <br />26% potatoes <br /> <br />150 A <br /> <br />Corner Management <br /> <br />20 A. potatoes & barley <br />"e:o-rner" system <br />4 A. no cover <br /> <br />24 A. corners to potatoes <br />and barley, e:onventional <br />surface irrigation <br /> <br />24 A. corners to permanent <br />wildlife cover <br /> <br />P rob lems <br /> <br />No wildlife cover, dust during pre- <br />plant tillage period 1n spring, some <br />higher e:apital requirement & risk. <br />Fails to use river water to enhane:e <br />groundwater recharge. <br /> <br />Lower returns than "corner" system <br />or idle corners, no wildlife cover, <br />dust' during preplant tillage period <br />in spring. <br /> <br />Negative returns (cost) in corners <br /> <br />Net returns <br />(loss- ) <br />per acre <br />corners <br /> <br />(Dollars) <br /> <br />111. 54 <br /> <br />- 55,30 <br /> <br />- 51. 34 <br /> <br />6 A. potatoes, 18 A. no cover Zero retu~ in corners When planted 36.57 <br />to barley, severe dust problems <br />when planted to barley, no wildlife <br />cover, less severe noxious weed problem <br />when planted to potatoes. Fails to use <br />river water to enhance groundwater recharge <br />when no cover. <br /> <br />No wildlife cover, dust during preplant 62.55 <br />tillage period in spring, some higher <br />capital requirement and risk. Fails to <br />use river water to enhane:e groundwater <br />rec~arge. <br /> <br />20 A. potatoes. and barley <br />"eorner" system <br />4 A. no cover <br /> <br />Net returns <br />008S-) perA <br />for 154 A <br />qunrter <br />section <br />(Dollars) <br /> <br />111.54 <br /> <br />43.94 <br /> <br />M <br /> <br />45,85 <br /> <br />59,55 <br /> <br />62,55 <br /> <br />11 Rotations represent an aggregate of quarter sections. <br />II An average of six acres per quarter section ar~ lost due to farmsteads, ditches, power lines or other obstrue:tions. <br /> <br />"",......T~. <br />:"/;--./' j' II <br />a ..... ,J ~ ' .,....... <br />