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Well-managed irrigated pasture production can be optimized without nitrogen (N) fertilizer. The objective was to determine mixture and planting ratios of tall fescue (Schedonorus arundinacea Schreb.) (TF), meadow brome (Bromus riparius Rehm.) (MB), orchardgrass (Dactylis glomerata L.) (OG), timothy (Phleum pratense L.) (TIM), and perennial ryegrass (Lolium perenne L.) (PRG) with alfalfa (Medicago sativa L.) (ALF), birdsfoot trefoil (Lotus corniculatus L.) (BFTF), or cicer milkvetch (Astragalus cicer L.) (CMV) that maximize productivity. Planting ratios were 0:100 (grass:legume), 25:75, 50:50, 75:25, and three 100:0 grass monocultures fertilized at 0, 67, and 134 kg N ha-1. Seasonal production of TF-ALF was 12.69 Mg ha-1, equal to TF fertilized at 134 kg N ha-1. ALF mixtures with MB, OG, TIM, and PRG produced 12.57, 10.97, 11.77, and 10.74 Mg ha-1, respectively, and 8 to 40% more than grasses receiving 134 kg N ha-1. Production of BFTF mixtures with TF, MB, and OG were 11.69, 11.45, and 9.95 Mg ha-1, respectively, equal to their respective grass monoculture receiving 134 kg N ha-1. The BFTF-TIM and BFTF-PRG mixtures averaged 12% more forage than grass monocultures receiving 134 kg N ha-1. Production of CMV-grass was similar to that of grasses receiving 67 kg N ha-1. Seasonal forage distribution was more uniform in ALF- and BFTF-grass mixtures, averaging 30% more at the second and third harvests than fertilized grasses. The TF and MB legume mixtures averaged 7% more production in the 50:50 planting ratios than the other two grass-legume mixtures, while the 50:50 and 25:75 ratios of OG and TIM-legume mixtures averaged 12% more than the 75:25 and the 25:75 PRG-legume planting ratio averaged 9% more than the 50:50 and 75:25. Forage production of grass-legume mixtures can equal or exceed fertilized grass monocultures and with more uniform distribution over the growing season. [ABSTRACT FROM AUTHOR]

Reports on the identification of the source and frequency of agricultural injuries in Utah. Determination of the injury rate for common agricultural activities with the utility of emergency room logs; Mode of treatment; Percentage of time spent in hazardous activities.

Investigates whether cytoplasmic effects exist in soybean. Evaluation of agronomic characters in parents, crosses and reciprocal crosses; Differences observed among cytoplasms; Factors that may have caused the significant differences observed.

Further evidence is presented on the reliability and validity of the Job Components Inventory (JCI), a recently developed job analysis technique. The JCI covers the use of tools and equipment, physical and perceptual requirements, mathematical requirements, communication requirements, decision-making and responsibility requirements. Results of a study of 75 postmen and postwomen and seven supervisors are reported. Inter-rater reliability, supervisor-job incumbent agreement and inter-office agreement were all found to be high. This study indicates that the JCI can be used to analyse jobs other than low skill youth jobs for which it was originally developed [ABSTRACT FROM AUTHOR]

The transfer of information from research to producers is often a weak link in the research process. This study examined the methods used to transfer sustainable agriculture research technology to producers. Both principle investigators (researchers) and producers were interviewed to determine their preferences for technology transfer. Principle investigators prefer to transfer research information via workshops and periodicals. Producers prefer to receive information via on-farm trials and periodicals. Producers value workshops primarily for the dialog with the other producers. On-farm demonstrations are particularly important for technology that requires a drastic transition from the methods currently used in the farm/ranch operation. [ABSTRACT FROM AUTHOR]