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Improving Projected Potential Evapotranspiration Estimates Using National Weather Service Forecasts, Steven J. Meyer, Kenneth G. Hubbard, Donald A. Wilhite

National Drought Mitigation Center: Faculty Publications

In a recent survey conducted by the University of Nebraska's Center for Agricultural Meteorology and Climatology of Agricultural Network (AGNET) users, the results of potential evapotranspiration (ET_p) projections (calculated using the Blaney-Criddle approach, which employs "normal" climatic data to project ET_p estimates up to three days into the future) were labeled "unrealistic." To improve these projections, National Weather Service (NWS) forecast variables were used as input into the Blaney-Criddle and Penman equations. ET_p projections calculated according to the Penman equation, with data measured by automated weather stations as input, were assumed to represent the "best" …

Evaluating Prime Agricultural Land In The Shire Of Manjimup, V T. Read

Resource management technical reports

No abstract provided.

Annual Medic Evaluation On Eradu Sandplain Soil - Plots, Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88EC17

Location: East Chapman Research Station.

The plots were hand sown at 2 g/m2 of inoculated and lime pelleted seed. The medics were inoculated with WSM540 which may have been ineffective on some of the M. littoralis and M. tornata varieties. The time taken to form ripe pods was monitored to gain some extra measure of maturity besides flowering time for comparing wide ranges of species. The ripening time involved was very similar over all the varieties, averaging out to 44 days after the flower opens. What appears to be a more important factor when considering maturity is the …

Experimental Summary 1988, R Ac Jones, J M. Wroth, A R. Baker, A D. Lucas, S J. Mckirdy, A D. Lucas, C R. Wilson, W Pathipanawat, R D. Harris, K Clarke, D Van Den Bosch

Experimental Summaries - Plant Research

1. Disease complexes in wheat field screening trials.

2. Glasshouse screening for wheat leaf disease resistance.

3. Effect of phosphate, stand density and Rovral on Pleiochaeta setosa in lupins.

4. Genotype and rvral for Pleichaeta setosa in lupins.

5. Control of Septoria in early sown wheat.

6. Controlling Pyrenophora graminea leaf stripe in barley.

7. Effect of environment on leaf stripe in barley.

8. Unusual seed quality problems.

Soil Factors Affecting Flood Runoff On Agricultural Catchments In Western Australia, D J. Mcfarlane, J R. Davies

Resource management technical reports

Reviews methods of including soil properties in flood runoff-predicting equations. Concentrates on practical methods that can be routinely used by soil conservation technicians for flood prediction rather than complex research models. A case is made for collecting soil data from the gauged catchments which are relevant to a perceived runoff mechanism and are capable of being routinely applied in simple flood prediction methodologies.

Crop Establishment Methods For Lupin Disease Management 13 To 23, M Sweetingham

Experimental Summaries - Plant Research

88NO73, 88ME59, Phosphorus x disease on lupins.

Aim, location, soil type, rotation, establishment, results.

88ME60, Seed treatments for brown spot and Pleiochaeta root rot of lupins.

88SC33, Rovral and Sumisclex, seed treatment for lupins.

Rhizoctonia root and hypocotyl rots.

88NO74, fungicides and sowing depth for Rhizoctonia root rot.

88GE53, Rizolex for Rhizoctonia control in lupins.

88GE31, Cultivation and sowing depth for Rhizoctonia patch and hypocotyl rot of lupins.

88E38, Cultivation and sowing depth effects on Rhizoctonia bare patch in lupins.

88NO92, Semi selective fungicide drenches for root/hypocotyl rot of lupins.

Brome Grass Population Dynamics, A H. Cham

Experimental Summaries - Plant Research

To identify the level of brome grass under various crop rotation systems. To design the best control system. To understand some of the effects of changing rotation systems. 86C1

Soil Conservation And Management Strategies For The Toolibin Catchment, S J. Hearn

Resource management technical reports

No abstract provided.

Pea Variety Tolerances To Herbicides, David Bowran

Experimental Summaries - Plant Research

88ME118.

This site was variably infested with a population of wild oats and self-sown cereals.

Murex Medic Trials And Redlegged Earthmite Impacts, D. Gillespie

Experimental Summaries - Plant Research

1. Selection and development of early maturing varieties of murex medic.

Small plot trials were established at six medium and low rainfall sites in autumn 1988. All were hand sown 2Mx3Mplots sown at 50 kg/ha except for the Merredin site which was drill sown at 10 kg/ha.

Locations: Badgebup, Gabalong, Kellerberrin, Merredin, North Quairading, Pingrup.

2. Mid season murex medic evaluation.

Locations: Avondale, Cranbrook, Darkan and New Norcia

This programme aims to identify superior varieties to Zodiac which was released in 1988.

3. Management of murex medic.

Locations: Arthur River

After three years of drought the large grazing trial at …

Crop Establishment Methods For Lupin Disease Management, M Sweetingham, A Pelham, M Judges

Experimental Summaries - Plant Research

Pleiochaeta root rot, 88WH33, 88M38, 88WH34, 88M39, 87WH45, 87M52.

Brown spot and Pleiochaeta root rot, 88M40, 88C4, 88ME59, 88NO73, 88ME60, 88SC33.

Rhizoctonia root and hypocotyl rots, 88NO74, 88GE53, 88GE31, 88E38.

Fungicide drench trials, 88NO92.

Summary Of Rhibozium Field Experiments In 1988, J G. Howieson

Experimental Summaries - Plant Research

87M11, 87H12, 88KA77, 88ME97, 88GE32, 88ME98, 88GE33A, 88GE33B, 88KA86, 88ME86.

Title, aim, background, treatments, tables, results, discussion, conclusions.

Tolerance Of New Cereal Varieties To Current Herbicides., D Bowran

Experimental Summaries - Plant Research

Trial 88EB26

While this site had a low population of weeds no yield increases were apparent. Few variety differeces were apparent at this site, though Hoegrass + Glean reduced yield of Crabook significantly.

Trial 88EC27

Few crop effects were experienced at this site. The major effect was due to variable fertility in replicates 3 and 4 and this resulted in the somewhat uyp and down nature for the Glean, Logran and hoegrass results.

Trial 88SC32

This site had a major problem with soil acidity and only triticale and oats grew satisfactorily. Barley was strongly influenced by the acidity and many …

Tolerance Of Recommended Cereal Varieties Of New Herbcides, David Bowran

Experimental Summaries - Plant Research

88EC28, 88SC31, 88N73.

The Nebraska Agricultural Climate Situation Committee, R. E. Neild, K. G. Hubbard, Donald A. Wilhite

National Drought Mitigation Center: Faculty Publications

The Nebraska Agricultural Climate Situation Committee consisting of an interdisciplinary group of extension specialists provides up-to-date information and advice on seasonal changes in crop/ weather conditions. The committee meets each Monday during the growing season to review:

1. Maps and tabular data developed by a computer program CIS /Crop Weather Information System/ that is linked to a network of weather stations and computer terminals in county agent offices.

2. Insect, plant disease and weed surveys.

3. Weekly weather and crop reports from the State/Federal System.

4. Weather outlooks from the National Weather Service.

5. Climate probabilities.

Situation reports and advisories …

Branched Oak Lake State Recreation Area

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

A Monograph Of The Genus Polyphylla Harris In America North Of Mexico (Coleoptera: Scarabaeidae: Melolonthinae), Ronald M. Young

Bulletin of the University of Nebraska State Museum (1924–2023)

The North American species of the genus Polyphylla Harris, 1841, are defined and revised for the first time since Fall (1928). All name bearing types were examined except those of P. oklahomensis Hatch and P. subvittata LeConte (synonyms of P. hammondl), which are lost. A lectotype is designated for P. gracilis Horn, and neotypes for P. decemlineata (Say), P. occidentalis (L.), and P. variolosa (Hentz). New synonyms of P. decemlineata are P. comstockiana von Bloeker, P. matrona Casey, and P. potsiana Casey. New synonyms of P. crinita …

Calcareous Nannofossil Biostratigraphy From Leg 101, Northern Bahamas, David K. Watkins, Joost W. Verbeek

Department of Earth and Atmospheric Sciences: Faculty Publications

Leg 101 of the Ocean Drilling Program drilled 19 holes at 11 sites to investigate the geology of the Straits of Florida and the northern Bahamas. Drilling at Site 626 indicated that the Gulf Stream has had significant flow through the Straits of Florida for at least the last 24 million years. Winnowed, foraminiferal grainstones and packstones with sparse nannofossil assemblages and the reworking of older nannofossils suggest strong bottom-current activity throughout this interval. Drilling north of Little Bahama Bank and in Exuma Sound documents the growth of platform slopes during the late Cenozoic. Nannofossil biostratigraphy of the upper Cenozoic …

Tillage Systems And Soil Stability, R J. Jarvis

Journal of the Department of Agriculture, Western Australia, Series 4

No abstract provided.

Lupin Variety Tolerance To Herbicides, D Bowran, R Watson

Experimental Summaries - Plant Research

Trial 88EC31

This site received a basal treatment of 1.5 L of simazine/ha prior to seeding. Due to a heavy stubble load lupin seed was dropped onto the surface and lightly incorporated.

High rates of Simazine were better tolerated by Gungurru 75A/260 and CE2/435. The highest rate of Brodal reduced yields in all varieties except Gungurru.

Trial 88EB27

This site was severely infested with aphids and bean mosaic virus such that the varieties Illyarrie and Danja had up to 60% plant death by anthesis. Other varieties were affected but to a lesser extent.

Pasture Cultivar Comparison On Acid Wodjil Soil - Large Plots., Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88TS64

Location: Latham

To evaluate the effect of various legume pasture cultivars on pasture production on acid wodjil soils.

Dryland Pasture Legume Programme, C. K. Revell, G. Croker, J. Simmons, L. Heinrich

Experimental Summaries - Plant Research

1. Medic variety evaluation

a. Row Evaluation - 88ME122 - Merredin.
This method of assessment was used to test a range of new medic material originating from the South Australian Department of Agriculture.

b. Evaluation of burr medics on Morrel soils. - 88ME84 - Nokaning.

c. Evaluation of burr medics on Whitegum soils. 88ME85 - North Kellerberrin.

d. Evaluation of Santiago in low rainfall areas - 88ME86 - Mukinbudin.

e. Selection of early maturing M. murex. 88SC30 - Merredin.

f. Medic species evaluation - large plots. 88NO88 - Tammin.

g. Medic species evaluation - large plots. 85M43 - Merredin Research …

Resource Notes-Fall/Winter 1987-88

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Hydrothermal Fluids And Petroleum In Surface Sediments Of Guaymas Basin, Gulf Of California: A Case Study, J. M. Gieskes, B. R. Simoneit, T. Brown, Timothy J. Shaw, Y. C. Wang, A. Magenheim

Faculty Publications

No abstract provided.

Mineral Yearbook Of Nebraska-1988, Leon E. Esparza, Raymond R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Stratigraphy And Depositional History Of The Deadwood Formation (Upper Cambrian And Lower Ordovician), Williston Basin, North Dakota, Douglas B. Anderson

Theses and Dissertations

Based on gamma-ray characteristics, the Deadwood Formation is divided into six informal, attribute-defined units, members A through F. Members A and Bare Late Cambrian in age; members C through Fare Early Ordovician in age. The type section of the Deadwood, in the northern Black Hills, is dominated by Upper Cambrian strata. Much thicker Lower Ordovician rocks occur in the deeper portion of the Williston Basin.

The Deadwood comprises the Sauk sequence and represents the initial Paleozoic transgression or the seas on the North American craton. Eight smaller-scale transgressive-regressive events occurred on the craton during the Late Cambrian and the Early …

Thermal History Model Of The Williston Basin, Yue-Chain Huang

Theses and Dissertations

The factors that affect the subsurface temperature of a sedimentary basin were investigated by empirical and analytical methods. A review of thermal-mechanical models suggests that the Williston Basin was formed by more than one mechanism. The Williston Basin may have been initiated by a thermal event followed by thermo-flexural or phase transition subsidence.

The heat that initiated the formation of the Basin was significant to the thermal history of the Basin at its very beginning stage. However, most of the anomalous heat would have dissipated before the deposition of Bakken Formation 363 Ma ago. The heat flow history of the …

Deposition And Diagenesis Of A Portion Of The Frobisher-Alida Interval (Mississippian Madison Group), Wiley Field, North Dakota, Mark R. Luther

Theses and Dissertations

This study focused on the Frobisher-Alida interval, in particular, the Glenburn bed or the Mississippian Mission canyon Formation. Wireline logs and cores from closely spaced wells in, and adjacent to, the Wiley Field, Williston Basin, North Dakota were examined. Information derived from the wireline logs was used to construct several maps which show that there was little or no topographic relief or slope in the study area during deposition or the Glenburn bed. In addition, the maps show that structural derormation occurred subsequent to deposition or the Frobisher-Alida interval.

Six distinct lithoracies were recognized in cores or the Glenburn bed …

Characterization And Utilization Of High- And Low-Sodium Lignite Of The Beulah-Zap Bed (Paleocene), Indian Head Mine, Southwestern North Dakota, Gale G. Mayer

Theses and Dissertations

A study of high- and low-sodium lignite of the Beulah-Zap bed sampled at the Indian Head Mine, Pit 11 and 12, respectively, in Mercer County, North Dakota and fly ash derived from utilization tests on the lignite, indicates the fly-ash composition and related utilization potential can be correlated to coal geochemistry.

Average lithotype abundances for each of the sampling sites were estimated to be vitrain 50%, attritus 45%, and fusain 5%. Attritus occurs more frequently in the upper part and vitrain in the middle and lower parts of the seam. Maceral groups, identified microscopically, were (in order of decreasing abundance): …

Major And Trace Element Characterization And Correlation Of The Sentinel Butte Ash/Bentonite (Paleocene), Mckenzie County, North Dakota, Richard A. Larsen

Theses and Dissertations

The Sentinel Butte ash/bentonite has been used for stratigraphic correlation in and around the North Unit of Theodore Roosevelt National Park in western North Dakota primarily by tracing it along the escarpments of the Little Missouri River. The purpose of this study was to determine the geochemical fingerprint for the Sentinel Butte ash/bentonite, and use this fingerprint to assess the correlation value of this and other terrestrial bentonites. Mapping enlarged the known geographic distribution of this unit and provided an insight into its diagenetic history.

Samples from thirty randomly chosen sites and fifteen grab sites were used to evaluate the …