Table of contents

37 SYMBIOSIS-A MARRIAGE OF CONVENIENCE W. F. Campbell, C. Barnes, and D. C. lanson A type of bacteria that lives in the roots of legumes converts nitrogen from the air into a form useable to host plants, and may aid in revegetating strip-mined lands.

40 ALCOHOL FUEL FROM SUGARBEETS D. L. Doney and J. C. Theurer Sugarbeets, once a major crop in Utah, may regain acreage as a possible source of fuel to supplement our increasingly expensive petroleum.

44 OIL SHALE-POTENTIAL RESOURCE AND POSSIBLE ENVIRONMENTAL PROBLEM R. J. Wagenet, D. F. Fransway, and C. M. McKell The development of Utah's huge deposits of oil shale could help alleviate current energy problems, but at a cost of increasing the salinity of rivers and soils.

49 MANNING-A NEW HARD RED WINTER WHEAT W. G. Dewey A new winter wheat has been developed for use by Utah farmers.

52 TO HARVEST THE SUN I. Dirmhirn Mountains, which receive more sunlight than valleys, show promise as locations for solar power collection.

57 IRRIGATION, ENERGY, AND FOOD J. Keller Various forms of irrigation differ Significantly In the energy they consume while bringing a crop from the seed stage to consumer-readiness.

60 SURGE FLOW-A REVOLUTION IN SURFACE IRRIGATION A. A. Bishop Surface irrigation efficiency IS greatly improved when intermittent rather than continuous flows of water are used.

64 PUMP POWER-ENERGY SAVINGS WITH EFFICIENT IRRIGATION SYSTEM MANAGEMENT R. E. Griff in and R. K. Stutler Improved pumping efficiency can save Utah farmers energy dollars.

66 PROJECTS IN PROGRESS L. M. Cox This feature heralds things to come. Its brief samplings of ongoing research describe the hows and whys of anticipated results.

69 HOW TO FIGURE CROP COSTS F. A. Condie Inflation has given dryland wheat farmers new figures to ponder.