Digital Commons Network^™

The Earth, Energy, And Agriculture, Tad W. Patzek

Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)

Presenter: Tad W. Patzek, Professor of Petroleum Engineering, University of California at Berkeley, Berkeley, CA.

13 pages (includes some color illustrations).

Contains references.

Slides: Agriculture: Climate Change Problem, Solution, Or Both? And U.S. Agriculture And Climate Change: Challenge And Opportunity, David L. Carlson

Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)

Presenter: David L. Carlson, President, Resource Analysis, Inc., Denver, CO.

1 page and 19 slides.

Contains footnotes.

Slides: The Real Biofuel Cycles And The Earth, Biofuels, And Reality, Tad W. Patzek

Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)

Presenter: Tad W. Patzek, Professor of Petroleum Engineering, University of California at Berkeley, Berkeley, CA

2 pages and 29 slides.

Contains footnotes.

Agenda: Climate Change And The Future Of The American West: Exploring The Legal And Policy Dimensions, University Of Colorado Boulder. Natural Resources Law Center

Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)

Sponsors: The William and Flora Hewlett Foundation; BP America; Holland & Hart; Patrick, Miller & Krope, P.C.; The Rocky Mountain Mineral Law Foundation, Rocky Mountain Natural Resource Center of the National Wildlife Federation, Western Water Assessment.

Exploring the legal and political dimensions that climate change will bring to the American West will be the focus of the CU-Boulder Natural Resources Law Center's 27th Annual Summer Conference.

Titled "Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions," the conference will be held June 7-9 at the Fleming Law Building on the University of Colorado at …

Slides: Climate Change & The Ecological Resources Of The West, Chris Field

Climate Change and the Future of the American West: Exploring the Legal and Policy Dimensions (Summer Conference, June 7-9)

Presenter: Chris Field, Director, Department of Global Ecology, Carnegie Institution of Washington, DC.

39 slides.

Contains references.

Intsormil Marketing Strategies Increase Farm Income And Promote Technology Introduction In West Africa, Intsormil

INTSORMIL Impacts and Bulletins

The World Bank’s 2006 Human Development Report ranks Niger as the world’s second-poorest nation. Most of its 11 million citizens live in semi-arid grasslands and survive on subsistence cultivation of millet, sorghum, and other drought-resistant crops. Producers sell their crops in September and October, the peak months of the harvest season, when local markets can be flooded with grain and prices are low. These farmers often must then purchase additional food supplies in the “hungry months” of June and July when food grains reach much higher prices.

INTSORMIL’s West Africa Marketing-Processing Project, funded by USAID/WARP, is accelerating the adoption of …

Mp756: Eastern Regional Potato Trials 2004: Summary Of Ne1014 Regional Project Field Testing Of New Potato Clones, Gregory Porter, Chad Hutchinson, J. Marion White, Paul Ocaya, Craig Yencho, Mark Clough, Dale Moyer, Joe Sieczka, Don Halseth, Matt Kleinhenz, David Kelly, Barbara Christ, Pierre Turcotte, Daniel Harvey, Gilles Hamel, Rikki Sterrett

Miscellaneous Publications

The objectives of this regional potato trial are (1) to develop pest-resistant, early-maturing, long-dormant potato varieties that will process from cold storage; (2) to evaluate new and specialty variet­ies developed in the Northeast; (3) to determine climatic effects on performance to develop pre­dictive models for potato improvement; and (4) determine heritability/linkage relationships and improve the genetic base of tetraploid cultivated varieties. The results presented in this report reflect a portion of the activity directed toward objectives 1, 2 and 3.

Book Review: Agriculture As A Producer And Consumer Of Energy, Wally Wilhelm

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

As the title of this book suggests, agriculture resides on both sides of the nation’s energy balance equation. Throughout history, agriculture has used and produced energy. Early agriculture relied on human and animal traction; much of the produce was consumed to power the enterprise. From the end of World War II through the present, a unique period in agricultural production has existed. Energy used on farms has come from sources beyond the farm gate—oil wells in the Middle East and Alaska’s North Slope, coal mines in Wyoming, and natural gas fields in Gulf States and the Gulf of Mexico. As …

Cropping Sequence And Tillage System Influences Annual Crop Production And Water Use In Semiarid Montana, Usa, Andrew W. Lenssen, G. D. Johnson, G. R. Carlson

Andrew W. Lenssen

Available water is typically the biggest constraint to spring wheat production in the northern Great Plains of the USA. The most common rotation for spring wheat is with summer fallow, which is used to accrue additional soil moisture. Tillage during fallow periods controls weeds, which otherwise would use substantial amounts of water, decreasing the efficiency of fallow. Chemical fallow and zero tillage systems improve soil water conservation, allowing for increased cropping intensity. We conducted a field trial from 1998 through 2003 comparing productivity and water use of crops in nine rotations under two tillage systems, conventional and no-till. All rotations …

Nitric Oxide Accelerates Seed Germination In Warm-Season Grasses, Gautam Sarath, Paul C. Bethke, Russell Jones, Lisa M. Baird, Guichuan Hou, Robert B. Mitchell

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The nitric oxide (NO) donor sodium nitroprusside (SNP) significantly promoted germination of switchgrass (Panicum virgatum L. cv Kanlow) in the light and in the dark at 25°C, across a broad range of concentrations. SNP also promoted seed germination in two other warm-season grasses. A chemical scavenger of NO inhibited germination and blocked SNP stimulation of seed germination. The phenolic (+)-catechin acted synergistically with SNP and nitrite in promoting seed germination. Acidified nitrite, an alternate NO donor also significantly stimulated seed germination. Interestingly, sodium cyanide, potassium ferricyanide and potassium ferrocyanide at 200 lM strongly enhanced seed germination as well, whereas …

Intsormil Responds To Emerging Grain Markets In West Africa, Intsormil

INTSORMIL Impacts and Bulletins

According to Lloyd Rooney, Distinguished Professor of Food Science at Texas A&M, “A consistent, high quality grain supply is the first prerequisite for the development of the food processing industry in West Africa.” The International Sorghum and Millet (INTSORMIL) Collaborative Research Support Program in West Africa is helping farmers produce a consistent supply of high quality sorghum and millet that meets the requirements of industry.

INTSORMIL’s Marketing-Processing Project, funded by USAID/WARP and directed by Botorou Ouendeba, Nigerien millet breeder and former Coordinator of the West and Central African Millet Research Network is responding to the emerging market demand by promoting …

Influence Of Soil Compaction On Nitrogen Volatilization In A Management Intensive Grazing System: Estimation Of Gaseous N Losses Using Mass Balance In Intact Soil Cores, Luke Alan Petersen

Undergraduate Honors Capstone Projects

Increasing concern about the environmental impacts of greenhouse gases and PM 2.5 particulates has prompted many researchers to examine the processes of gaseous loss of nitrogen (N) from agricultural land. As agricultural production becomes more competitive and producers strive to become more efficient by reducing input costs, they will increasingly employ practices such as the rotational stocking, also called Management Intensive Grazing (MIG). MIG utilizes high animal stocking rates for short periods of time to efficiently harvest pasture crops. Unfortunately, MIG also produces relatively high concentrations of livestock excreta. This has caused intensive grazing practices to become a focal point …

Industrial Production Of Activated Carbon From Cotton Stalks, Mamdouh Magued Louis

Archived Theses and Dissertations

Utilization of agricultural waste in the production of valuable products can promote the national efforts in minimizing serious public health risks from exposure to dangerous fumes that result from burning in open fields at the end of every harvest season. An agricultural waste, namely cotton stalks, was chosen for developing a cost effective process for the production of activated carbon using bench equipment at laboratory scale, and typical industrial equipment at pilot scale. Findings show that the pilot scale production trial was successful in terms of equipments chosen and quality of activated carbon produced. Physical and pore analysis showed that …

The Arabidopsis Homolog Of Trithorax, Atx1, Binds Phosphatidylinositol 5-Phosphate, And The Two Regulate A Common Set Of Target Genes, Raul Alvarez-Venegas, Monther Sadder, Andrej Hlavacka, Frantisek Baluska, Yuannan Xia, Guoqing Lu, Alexey Firsov, Gautam Sarath, Hideaki Moriyama, Joseph G. Dubrovsky, Zoya V. Avramova

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

TheArabidopsis homolog of trithorax, ATX1, regulates numerous functions inArabidopsis beyond the homeotic genes. Here, we identified genome-wide targets of ATX1 and showed that ATX1 is a receptor for a lipid messenger, phosphatidylinositol 5-phosphate, PI5P. PI5P negatively affects ATX1 activity, suggesting a regulatory pathway connecting lipid-signaling with nuclear functions. We propose a model to illustrate how plants may respond to stimuli (external or internal) that elevate cellular PI5P levels by altering expression of ATX1-controlled genes.

Includes supplemental supporting information.

Crossover Interactions For Grain Yield In Multienvironmental Trials Of Winter Wheat, R. Mishra, P. Stephen Baenziger, W. Ken Russell, Robert A. Graybosch, David D. Baltensperger, Kent M. Eskridge

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Crossover interactions (COIs) are changes in ranks among cultivars across environments. Breeders are concerned about COIs because their frequency affects how well rankings from one environment predict rankings in another environment. This research was undertaken to determine the frequency and distribution of COIs for grain yield within years in two regional trials of winter wheat (Triticum aestivum L.). The trials were in Nebraska and in the south-central USA (SCUS). Each trial had four environments per year, and results from 1998, 1999, and 2000 were considered. Significance of COI for each pair of lines in each pair of environments within …

Lysine Residues In N-Terminal And C-Terminal Regions Of Human Histone H2a Are Targets For Biotinylation By Biotinidase, Yap Ching Chew, Gabreale Camporeale, Nagarama Kothapalli, Gautam Sarath, Janos Zempleni

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

In eukaryotic cell nuclei, DNA associates with the core histones H2A, H2B, H3 and H4 to form nucleosomal core particles. DNA binding to histones is regulated by posttranslational modifications of N-terminal tails (e.g., acetylation and methylation of histones). These modifications play important roles in the epigenetic control of chromatin structure. Recently, evidence that biotinidase and holocarboxylase synthetase (HCS) catalyze the covalent binding of biotin to histones has been provided. The primary aim of this study was to identify biotinylation sites in histone H2A and its variant H2AX. Secondary aims were to determine whether acetylation and methylation of histone H2A affect …

Mp755: Eastern Regional Potato Trials 2003: Summary Of Ne1014 Regional Project Field Testing Of New Potato Clones, Gregory Porter, Chad Hutchinson, J. Marion White, Paul Ocaya, Craig Yencho, Mark Clough, Mel Henninger, Joe Sieczka, Don Halseth, Matt Kleinhenz, David Kelly, Barbara Christ, Pierre Turcotte, Daniel Harvey, Gilles Hamel, Rikki Sterrett

Miscellaneous Publications

The objectives of this regional potato trial are (1) to develop pest-resistant, early-maturing, long-dormant potato varieties that will process from cold storage; (2) to evaluate new and specialty variet­ies developed in the Northeast; (3) to determine climatic effects on performance to develop pre­dictive models for potato improvement; and (4) determine heritability/linkage relationships and improve the genetic base of tetraploid cultivated varieties. The results presented in this report reflect a portion of the activity directed toward objectives 1, 2 and 3.

Tillage And Crop Rotation Effects On Dryland Soil And Residue Carbon And Nitrogen, Upendra M. Sainju, Andrew W. Lenssen, Thecan Caesar-Tonthat, Jed Waddell

Andrew W. Lenssen

Sustainable management practices are needed to enhance soil productivity in degraded dryland soils in the northern Great Plains. We examined the effects of two tillage practices [conventional till (CT) and no-till (NT)], five crop rotations [continuous spring wheat (Triticum aestivum L.) (CW), spring wheat-fallow (W-F), spring wheat-lentil (Lens culinaris Medic.) (W-L), spring wheat-spring wheat-fallow (W-W-F), and spring wheat-pea (Pisum sativum L.)-fallow (W-P-F)], and a Conservation Reserve Program (CRP) on plant biomass returned to the soil, residue C and N, and soil organic C (SOC), soil total N (STN), and particulate organic C and N (POC and PON) at the 0- …

Proceedings Of The 33rd Annual Meeting, Southern Soybean Disease Workers (March 8-9, 2006, Jackson, Tennessee), Michael E. Schmidt, Ray Schneider, Daniel H. Poston, Jason Bond, Steve R. Koenning

Southern Soybean Disease Workers: Conference Proceedings

Contents

Southern Soybean Disease Workers 2005 treasury report

Southern United States Soybean Disease Loss Estimates for 2005. Compiled by SR Koenning

Virulence in Phytopbthora sojae Isolates to Soybeans with Rps8 Resistance. DA Smith, TS Abney, and JG Shannon

New Sources of Resistance to SCN in Soybean. PR Arelli

Soybean Disease Management in Louisiana. B Padgett, MA Purvis, and BW Garber

Efficacy and Profitability of Foliar Fungicide in the Absence of Soybean Rust. M Newman and W Percell

Fungicide and Insecticide Combinations for Enhancing Soybean Health and Yield. RP Mulrooney and RW Taylor

Overview of Soybean Rust Monitoring in the US. …

Genic Microsatellite Markers Derived From Est Sequences Of Switchgrass (Panicum Virgatum L.), Christian M. Tobias, Daniel M. Hayden, Paul Twigg, Gautam Sarath

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Switchgrass is a large, North American, perennial grass that is being evaluated as a potential energy crop. There is a need to assess genetic diversity in stored accessions and in remaining native stands to assist breeding and conservation efforts. Marker development will also be necessary for genetic linkage mapping. Toward this end, 32 switchgrass genic di-, tri- and tetranucleotide repeat microsatellites were identified from expressed sequence tags (ESTs). These microsatellites were used to screen individuals from two different named cultivars. The markers displayed a high level of polymorphism consistent with the tetraploid, allogamous behaviour of the cultivars tested.

Soil Organic Carbon Changes In Diversified Rotations Of The Western Corn Belt, G. E. Varvel

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Sequestration and storage of carbon (C) by agricultural soils has been cited as one potential part of the solution to soil degradation and global climate change. However, C sequestration in soils is a slow and dynamic process. The objective of this study was to evaluate the effects of crop rotation and N fertilizer management on soil organic C (SOC) levels at several points in time during 18 yr of a long-term study in the Western Corn Belt. Seven cropping systems (three monoculture, two 2-yr, and two 4-yr rotations) with three levels of N fertilizer were compared. Soil samples were taken …

The Established Intimin Receptor Tir And The Putative Eucaryotic Intimin Receptors Nucleolin And B1 Integrin Localize At Or Near The Site Of Enterohemorrhagic Escherichia Coli O157:H7 Adherence To Enterocytes In Vivo, James F. Sinclair, Evelyn A. Dean-Nystrom, Alison D. O’Brien

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

For enterohemorrhagic Escherichia coli (EHEC) O157:H7 to adhere tightly to the intestinal epithelium and produce attach and efface (A/E) lesions, the organism must express the adhesin intimin and insert the bacterially encoded translocated intimin receptor Tir into the plasma membrane of the host enterocyte. Additionally, some reports based on tissue culture experiments indicate that intimin has affinity for the eucaryotic proteins nucleolin and β1 integrin. To address the potential biological relevance of these eucaryotic proteins in the infection process in vivo, we sought to compare the proximity of Tir, nucleolin, and β1 integrin to regions of EHEC …

Chinch Bug (Hemiptera: Blissidae) Mouthpart Morphology, Probing Frequencies, And Locations On Resistant And Susceptible Germplasm, Wyatt G. Anderson, Tiffany Heng-Moss, Frederick P. Baxendale, Lisa M. Baird, Gautam Sarath, Leon G. Higley

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Chinch bugs are common pests of many agronomic and horticulturally important crops and turfgrasses. Previous research has indicated that some grasses exhibit resistance to multiple chinch bug species, whereas others are resistant to only one species. The objectives of this research were to document differences in the probing frequencies and locations among Blissus species as well as differences in mouthpart morphology as a first step in understanding the differential responses of grasses to chinch bug feeding. Scanning electron microscopy detected differences in the total lengths of proboscises as well as individual mouthpart segments among the four species studied. Blissus occiduus …

Transport Of E. Coli In Egyptian Agricultural Soils As A Result Of Reclaimed Wastewater Use For Irrigation, Aimen Badawy

Archived Theses and Dissertations

Limited water resources are one of the main constraints to socio-economic development and even a source of insecurity at national and regional levels. The increasing demand for water in the agricultural sector stimulated the use of reclaimed wastewater for irrigation. Comprehending health and environment risks resulting from contaminants that may often be associated with reclaimed wastewater will lead to the sustainable use of this resource, as well as the conservation of other water resources.

In the present study the fate and transport of one important wastewater constituent, namely E. Coli bacteria, in three Egyptian soils of typical agricultural use was …

Effect Of High-Pressure Hot-Water Washing Treatment On Fruit Quality, Insects, And Disease In Apples And Pears Part Iii. Use Of Silicone-Based Materials And Mechanical Methods To Eliminate Surface Pests, J. D. Hansen, M. L. Heidt, L. G. Neven, E. A. Mielke, J. Bai, P. M. Chen, R. A. Spotts

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Surface arthropods on pome fruits can cause export problems and disrupt commercial markets. Eliminating insects and mites on the packing line would be the last opportunity to provide for pest-free produce. In this study, an experimental packing line was used to evaluate techniques using different surfactant baths, pressurized water sprays, and styles of rotating brushes to remove field-collected and laboratory-reared grape mealybug, Pseudococcus maritimus (Ehrhorn) (Homoptera: Pseudococcidae), the diapausing two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) and the woolly apple aphid, Eriosoma lanigerum (Hausman) (Homoptera: Aphididae). The organosilicone Silwet L-77 was no more effective than a silicone-based food grade …

Characterization Of A Higher Plant Herbicide-Resistant Phytoene Desaturase And Its Use As A Selectable Marker, R. S. Arias, Franck E. Dayan, Albrecht Michel, J’Lynn Howell, Brian E. Scheffler

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Three natural somatic mutations at codon 304 of the phytoene desaturase gene (pds) of Hydrilla verticillata (L. f. Royle) have been reported to provide resistance to the herbicide fluridone. We substituted the arginine 304 present in the wild-type H. verticillata phytoene desaturase (PDS) with all 19 other natural amino acids and tested PDS against fluridone. In in vitro assays, the threonine ( Thr), cysteine (Cys), alanine (Ala) and glutamine (Gln) mutations imparted the highest resistance to fluridone. Thr, the three natural mutations [Cys, serine (Ser), histidine (His)] and the wild-type PDS protein were tested in vitro against seven …

Registration Of ‘Hallam’ Wheat, P. Stephen Baenziger, B. Beecher, Robert A. Graybosch, D. D. Baltensperger, Lenis Alton Nelson, Y. Jin, J. E. Watkins, J. H. Hatchett, Ming-Shun Chen, Guihua Bai

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

‘Hallam’ (Reg. no. CV-983, PI 638790) is a hard red winter wheat (Triticum aestivum L.) cultivar developed cooperatively by the Nebraska Agricultural Experiment Station and the USDA-ARS and released in 2005 by the developing institutions. Hallam was released primarily for its superior adaptation to rainfed wheat production systems in eastern Nebraska. The name Hallam was chosen to honor Hallam, NE, a town and its people rebuilding after a tornado.

Hallam was selected from the cross ‘Brule’ (Schmidt et al., 1983)/‘Bennett’ (Schmidt et al., 1981)//‘Niobrara’ (Baenziger et al., 1996) that was made in 1992. The F₁ generation was grown in …

Registration Of ‘Choptank’ Wheat, J.M. Costa, C.A. Griffey, H.E. Bockelman, S.E. Cambron, X. Chen, A. Cooper, C. Gaines, Robert A. Graybosch, A. Grybauskas, R.J. Kratochvil, D.L. Long, E. Shirley, L. Whitcher

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

‘Choptank’ (Reg. no. CV-976, PI 639724) is a soft red winter wheat (Triticum aestivum L.) that was jointly developed and released by the Maryland Agricultural Experiment Station, Department of Natural Resource Sciences and Landscape Architecture, and the Virginia Agricultural Experiment Station in 2004. Choptank is named after Maryland’s longest scenic river, which flows 70 miles from the western part of Delaware through Maryland and into the Chesapeake Bay, on Maryland’s Eastern Shore. Choptank has performed well in Maryland, Virginia, and Delaware and provides growers with a high-yielding cultivar with short stature, excellent powdery mildew [caused by Blumeria graminis (DC.) …

Laboratory And Field Assessment Of Some Kairomone Blends For Host-Seeking Aedes Aegypti, Craig R. Williams, Ramona Bergbauer, Martin Geier, Daniel L. Kline, Ulrich R. Bernier, Richard Russell, Scott A. Ritchie

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Using laboratory Y-tube olfactometers, the attractiveness of lactic acid and 2 kairomone blends from the United States Department of Agriculture (USDA) and BioGents GmbH (BG) was assessed for attractiveness to Aedes aegypti. Four geographically disparate populations were assessed: North Queensland Australia (NQA), Florida USA, Minas Gerais Brazil (MGB), and Singapore. In descending order, populations were attracted to USE)A, BG blends, and lactic acid. MGB was poorly attracted to lactic acid alone. The blends were less attractive than human odor. Proprietary blends were modified, and their attractiveness was assessed to find the optimum attractive mixture for NQA. Adding acetone to …

Laboratory Evaluation Of Avian Odors For Mosquito (Diptera: Culicidae) Attraction, S. A. Allan, Ulrich R. Bernier, D. L. Kline

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Attraction of Culex quinquefasciatus Say, Culex tarsalis Coquillett, Culex nigripalpus Theobald, and Aedes aegypti (L.) to avian and other host odors was investigated in a dual-port olfactometer. Although attraction to a human arm was high for Ae. aegypti (>80%) and low for all Culex spp. (<25%), all species responded similarly to a chicken (55.3-73.6%). Responses of Ae. aegypti, Cx. quinquefasciatus, and Cx. nigripalpus to feathers were low (<20%) but greater than to controls. There was no difference in attraction of Cx. tarsalis to feathers or controls. Responses to CO₂ (5 ml/min) were low for all species (<15%) except Cx. tarsalis, which were moderate (24.5%). When feathers were combined with CO2, the resulting attraction was additive or lower than responses …