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Dry-Matter Partitioning And Leaf Area Of Winter Wheat Grown In A Long-Term Fallow Tillage Comparisons In The Us Central Great Plains, Wallace Wilhelm

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

Crop management practices (tillage, residue management, fertilization, etc.) define the soil environment to which crops are exposed and through these environmental conditions control crop growth. The purpose of this paper is to report the response of winter wheat (Triticum aestivum L.) to long-term (10 years) application of fallow tillage practices (plow, sub-till, and no-till) and N fertilization in terms of above- and below-ground dry-matter partitioning. During 1978, less winter wheat root tissue was produced in the sub-till treatment compared to the average of the plow and no-till treatments. However, in 1979, all treatments produced the same amount of root …

Signaling Via Camp In Fungi: Interconnections With Mitogen-Activated Protein Kinase Pathways, James Kronstad, Adriana De Maria, Deanna Funnell, R. David Laidlaw, Nancy Lee, Mário Moniz De Sá, Marilee Ramesh

Department of Plant Pathology: Faculty Publications

The cAMP signal transduction pathway controls a wide variety of processes in fungi. For example, considerable progress has been made in describing the involvement of cAMP pathway components in the control of morphogenesis in Saccharomyces cerevisiae, Ustilago maydis, and Magnaporthe grisea. These morphological processes include the establishment of filamentous growth in S. cerevisiae and U. maydis, and the differentiation of an appressorial infection structure in M. grisea. The discovery that appressorium formation requires cAMP signaling provides an immediate connection to fungal virulence. This connection may have broader implications among fungal pathogens because recent work indicates …

Genetics Of The Interval From Weaning To Estrus In First-Litter Sows: Correlated Responses, J. Ten Napel, T. H. E. Meuwissen, R. K. Johnson, E. W. Brascamp

Department of Animal Science: Faculty Publications

The objective of this study was to evaluate relationships between rebreeding performance and growth performance (n = 3,777 gilts) and rebreeding performance and reproductive performance (n = 2,242 sows). Our data were from a selection experiment for shorter intervals from weaning to estrus after the first parity (IWE), involving Dutch Landrace pigs, in which a selection line and a control line without selection were maintained for eight generations. Relationships were evaluated before and after transforming IWE to normal interval (NI; IWE &#; 7 d), prolonged interval (PI; IWE > 7 d), and incidence of a prolonged interval (INC). Heritabilities of NI, …

University Of Nebraska Animal Science Department Centennial Book Of Memories

Department of Animal Science: Departmental News

This year marks the 1O0-year anniversary of the Department of Animal Science at the University of Nebraska. Our history is a rich one, with many achievements of our students, our research programs, and our service and outreach to the animal industries of Nebraska, the nation, and the world. With over three thousand alumni, we have an outstanding legacy in the development of animal industry leaders.

On Saturday, October 10, we will celebrate these one hundred years of achievement with several activities in Lincoln. Enclosed you will find descriptions of the program during the middle of the day, held "at home" …

Center For Grassland Studies Newsletter, Fall 1998, Volume 4, No. 4

Center for Grassland Studies: Newsletters

Contents:

Subirrigated Meadow Management Pratices by Jerry Volesky, West Central Research and Extension Center, UNL

Wildlife Habitat Incentive Program by Craig Derickson and Gerald Jasmer, USDA, Natural Resources Conservation Service

The Effect of Planting Date on Turfgrass Seed Production in the High Plains by Rebecca Harms, Turfgrass Project Coordinator, UNL

Beef Home Study Courses Begin Fifth Year

Plan Now to Attend SRM/AFGC Joint Meeting

Nebline, October 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Character Counts! for everyone
Growing hardy bulbs
Tree planting snafus
Timely care of hardy chrysantheums
Mole, mole, go away
Termite control options: baits vs. barriers?
Celebrate America Recycles Day
Household hazardous waste collection: November 7
It's time for your annual “pest-proof” check-up
Removing skunk odor
Temporary/emergency grain storage options
Control leafy spurge
Fall clean-up of warm-season grasses
The first frost, the last hurrah
Pasture weed control
What is this thing called winter desiccation?
Dormant planting grasses and legumes
Finding facts about vegetables and fruits
Healthy Eating: No-Crust Pumpkin Pie
Focus on Food
Preparing for the winter food olympics!
Family & …

Ard News October 1998

Agricultural Research Division: News and Annual Reports

CONTENTS:
Comments from the Dean
The North Central Region (NCR) Sustainable Agriculture Research and Education (SARE) Program
Revised Guidelines far ARD Travel Reimbursement Program far Prospective Graduate Students
Mussehl Endowment
Nebraska Corn Development, Utilization and Marketing Board Funding July 1, 1998 - June 30, 1999
Nebraska Grain Sorghum Development, Utilization and Marketing Board Funding July 1, 1998 - June 30, 1999
Nebraska Dry Bean Development, Utilization and Marketing Board Funding July 1, 1998 -June 30, 1999
Nebraska Soybean Development, Utilization and Marketing Baard Funding Oct. 1, 1998 - Sept. 30, 1999
Proposals Submitted far Federal Grants
Nebraska Wheat Baard Funding …

Evaluating Measures Of Family History Of Alcoholism: Density Versus Dichotomy, Scott F. Stoltenberg, Sharon A. Mudd, Frederic C. Blow, Elizabeth M. Hill

Department of Psychology: Faculty Publications

Aims: Studies have used myriad measures of family history of alcoholism (FH) making it difficult to compare them directly. Commonly used FH measures partition samples into the well-known positive (FH+) and negative (FH–) dichotomy, although quantitative measures of density potentially provide more information. A standard FH measure would facilitate between-study comparisons. The purpose of this study is to evaluate a quantitative FH measure, called Family History Density (FHD), that has theoretical and practical advantages over currently used measures. Design: Logistic regression equations were estimated for FHD and six commonly used FH measures on alcohol dependence diagnosis and two measures of …

Cropwatch No. 98-23, Sept. 11, 1998, Lisa Brown Jasa

Crop Watch (1994–2005)

Inisde

Store grain on the ground as a last resort.........199

Corn diseases widespread..........199

Sooty stripe, zonate leaf spot in sorghum......... 200

Producer questions underlying economics of farming......... 200

Estimate grain amount to determine proper aeration system .........202

New book addresses dry grain aeration systems......... 202

Rust strikes alfalfa fields .........203

Existing farm buildings will need reinforcement for grain storage .........204

Proper air flow important to quality storage......... 205

Entomology offers distance graduate degree......... 206

Corn drying rapidly, maturing ahead of average .........206

Nebline, September 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

National 4-H Week: October 4-10
Saving geraniums over winter
Perennials forever
Drying gourds
Seasonal needle drop on evergreens
Shades of autumn
“Why are we finding all these little reddish-brown beetles in our new home?”
Celebrate National Pollution Prevention (P2) Week
Birds of wonder: chimney swifts
Managing deer populations and damage
Bumblebees pollinating more
Recycling facts
Making the “right” management choices
Hard to control pasture weeds—fall is the time for control
Handle hay bales safely
Are you looking for the latest wheat variety test results?
Farm first-aid kits need to be user-friendly
Yes, no, or what?
Are you considering non-traditional livestock …

Mutational Analysis Of Area, A Transcriptional Activator Mediating Nitrogen Metabolite Repression In Aspergillus Nidulans And A Member Of The “Streetwise” Gata Family Of Transcription Factors, Richard A. Wilson, Herbert N. Arst Jr.

Fungal Molecular Plant-Microbe Interactions

Details a mutational analysis of AREA, a transcriptional activator mediating nitrogen metabolite repression in Aspergillus nidulans and a member of the “streetwise” GATA family of transcription factors.

The Plant Cdna Lct1 Mediates The Uptake Of Calcium And Cadmium In Yeast, Stephen Clemens, Danuta M. Antosiewicz, John M. Ward, Daniel P. Schachtman, Julian I. Schroeder

Department of Agronomy and Horticulture: Faculty Publications

Nonessential metal ions such as cadmium are most likely transported across plant membranes via transporters for essential cations. To identify possible pathways for Cd²⁺ transport we tested putative plant cation transporters for Cd²⁺ uptake activity by expressing cDNAs in Saccharomyces cerevisiae and found that expression of one clone, LCT1, renders the growth of yeast more sensitive to cadmium. Ion flux assays showed that Cd²⁺ sensitivity is correlated with an increase in Cd²⁺ uptake. LCT1-dependent Cd²⁺ uptake is saturable, lies in the high-affinity range (apparent K_M for Cd²⁺ = 33 µM) and is …

Nebline, August 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Harvesting Everlasting Flowers for Drying
Watering tips
Scorch—curse of plants on the plains
New grass faces the big test
Storing extra seeds
Control of ground ivy in the lawn
Audubon purchases 610-acre O'Brien Ranch
Household hazardous waste collection
Don't get stung!
Allergic to bee stings?
Dealing with unwanted guests
How animals stay cool when it's hot!
Fruit, vegetables and freedom to farm
Prescribed burning of CRP
What is LB1209 and does it affect you?
Toxic plants
How often to pump your septic tank
Caring for animals when gone
Flies
Field Day features high-value crops
Buildings
Festival of Color
Fresh, fabulous …

Ard News August 1998

Agricultural Research Division: News and Annual Reports

CONTENTS:

Comments from the Dean
Additional Opportunities for the ARD Undergraduate Honors Student Research Program
Widaman Trust Distinguished Graduate Assistant Award
Hardin Distinguished Graduate Fellowship for 1998-1999
ARD Advisory Council Election Results
Proposals Submitted for Federal Grants
Grants and Contracts Received June and July, 1998
New or Revised Projects
Nancy Lewis Selected for Leadership Development Program
Additional Guidance Regarding Tuition Remission on USDA-Funded Graduate Research Assistantships
Cooperative State Research, Education and Extension Service Budget for FY 1999
NUPROF Program
Fund for Rural America Update

Cropwatch No. 98-17, July 16, 1998, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Field updates..............154

Early spiders mites..............156

Wheat disease update..............156

Scouting for beetles..............157

2nd ECB egg-laying..............158

Roundup Ready rates..............158

Western bean cutworm..............159

Grazing corn..............160

Weather data..............160

Center For Grassland Studies Newsletter, Summer 1998, Volume 4, No. 3

Center for Grassland Studies: Newsletters

Contents:

Nebraska's Wetlands by Ted LaGrange,Nebraska Game and Parks Commission

Ashfall Fossil Beds: Record of an Ancient Grassland Ecosystem Preserved in Rock by Michael Voorhies, University of Nebraska State Museum

Wet Meadow Restoration at The Nature Conservancy's Speidell Tract by Chris Helzer, The Nature Conservancy

CGS Advisory Committee Tours Golf Course, Burned Grasslands, Fossil Beds and Ranch

Nebline, July 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Lancaster County Fair: yesterday, today and tomorrow
Pruning roses
Vegetable gardening in the fall
Bean leaf beetle
Summertime can be hazardous to trees
Thinning is important
Read the label before purchasing and using DEET
Household hazardous waste collection: July 25
A clean-up treasure hunt
The importance of water in your backyard
Wonders of wildlife
Did you know. . .
Scouting for rootworm beetles could save big $ next year
Plant turnips for fall grazing
Forage following wheat
On-farm biosolids research yields
Managing seeding year alfalfa
Acreage enterprises
Who are your neighbors?
Field day will feature high-value crops for small farms …

Morphological Development Of 2 Warm-Season Grasses In The Nebraska Sandhills, J. R. Hendrickson, Lowell E. Moser, K. J. Moore, Steven S. Waller

Department of Agronomy and Horticulture: Faculty Publications

Morphological development of grasses has numerous implications to rangeland management including the timing and amount of herbivory. The objective of this study was to quantify the developmental morphology of prairie sandreed [Calamovilfa longifolia (Hook.) Scrihn.] and sand bluestem [Andropogon gerardii var. paucipilus (Nash) Fem.] tiller populations. Tier populations of these 2 grasses were studied for 2 years in the Nebraska Sandhills. Plant development was evaluated using a growth staging system which quantifies the development of tiller populations. A morphological growth index for each species was calculated from either the weighted average of tiller numbers reported as mean stage …

The Physiology Of Life-History Trade-Offs: Experimental Analysis Of A Hormonally Induced Life-History Trade-Off In Gryllus Assimilis, Anthony J. Zera, Jason Potts, Kari Kobus

Anthony Zera Publications

Adult Gryllus assimilis given an analog of juvenile hormone exhibited reduced flight muscles and enlarged ovaries similar to those found in naturally occurring flightless individuals of species that are polymorphic for dispersal capability. Control and hormone-treated (flightless) G. assimilis did not differ in the amount of food consumed or assimilated on any of three diets that differed in nutrient quantity. Thus, enhanced ovarian growth of flightless individuals resulted from increased allocation of internal nutrients to reproduction (i.e., a trade-off) rather than from increased acquisition of nutrients. Compared with flight-capable controls, flightless G. assimilis also had reduced whole-organism respiration, reduced respiration …

Agricultural Research Division 112th Annual Report 1998

Agricultural Research Division: News and Annual Reports

It is a pleasure to provide you with a copy of the 112th Annual Report of the University of Nebraska Agricultural Research Division (ARD). This report is our chance to provide you with information about our programs and accomplishments and for us to evaluate the effectiveness of our collective research efforts. After examining this report, we hope that you will agree with our assessment that ARD research has provided new knowledge and technology to Nebraskans to improve the profitability of their enterprises, to enhance environmental quality and to improve their quality of life.

This report provides some highlights of research …

Cropwatch No. 98-12, June 12, 1998, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Field updates…….110

Yellow corn fields…….112

Low temperatures…….112

Weather update…….112

Row crop diseases…….113

Leaf rust and tan spot…….113

European corn borers…….114

ECB worksheet…….115

Crops update…….115

Selecting sprayer nozzles…….116

Spray droplet size…….117

Herbicide injury…….117

Soil test differences…….118

Cropwatch No. 98-11, June 5,1998, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Field updates…………100

Assessing soybean loss…………101

Offset rows in soybeans…………101

Postemergence weed control in soybeans…………102

Banding herbicides…………103

Weed tour dates…………103

Replanting restrictions…………104

Biopesticides…………105

Woody plant control…………106

Hailed corn…………107

Hailed alfalfa…………107

Miller moths likely…………108

Diagnostic update…………108

Stalk borer damage…………108

Ard News June 1998

Agricultural Research Division: News and Annual Reports

CONTENTS:
Comments from the Dean
Graduate Research Assistantships Paid from USDA Funds
CSREES Leadership Change
Fund for Rural America Update
"Pioneering the Future" Database
Nominations Sought for Junior Faculty Excellence in Research Award
Grants and Contracts Received April and May, 1998
New and Revised Projects
Proposals Submitted for Federal Grants
Campus Master Planning Activity
National Research Initiative Program - FY 1997
Agricultural Productivity in the U.S.
ARB Interdisciplinary Research Grants Program
Supporting ARD Researchers - IANR Land and Physical Facilities

Nativity, Domesticity, And Exile In Edward Abbey's "One True Home", Thomas Lynch

Department of English: Faculty Publications

On April first, 1956, only a few days prior to recording in his journal the birth of his son, Edward Abbey began the first of three seasons as a ranger in Arches National Monument. He immortalized this sojourn in the influential classic of nature writing Desert Solitaire, a work whose very title suggests that his experience of the desert was one essentially aloof from familial or other ties. As Abbey reveled in his desert solitude, his wife, Rita, and new son, Joshua, were summering in Hoboken. During subsequent years his wife and son visited periodically with him, but never for …

Nebline, June 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Wildwood Lake Watershed Project nearing completion
Propagation of shrubs from softwood cuttings
One potato, two potato, new potato
Pruning hedges
Water checklist for the landscape
Western Ribbon Snake Thamnophis proximus
My parents won’t want me to tell you this, but....
1998 pesticide container recycling begins in June
Glow little glowworm, glimmer, glimmer...
Harvest hay to fit your needs
1998 UNL Crop Management and Diagnostic Clinics
Prepare equipment for storage
Hay inoculants and preservatives
Plan the timing of grass hay harvest
Insect information on the web
Do you have a safe and adequate water supply?
Facts about CCA-pressure treated wood
The …

Uptake And Bioconcentration Of Atrazine By Selected Freshwater Algae, Jixin Tang, Kyle D. Hoagland, Blair Siegfried

Department of Entomology: Faculty Publications

Atrazine bioconcentration and uptake were determined for eight freshwater green algae and diatoms. Atrazine uptake was extremely rapid in all species examined, with nearly 90% of total uptake occurring within the first hour of exposure. Within each division, different species had different bioconcentration capacities, although the accumulation of atrazine was consistently higher in green algae (5.43–12.73 ng/mg) than in diatoms (0.33–1.69 ng/mg). Atrazine concentrations in the algal cells were much higher than in the medium, although the total amount of atrazine taken up by algae was small relative to the total atrazine in solution (1–3%). The ability of algal cells …

Nebline, May 1998

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Teens for Teens
Perennials with colorful foliage
Watering newly planted shade trees
Lilacs in the landscape
Repotting houseplants
How harmful are high copper levels in water?
Thank you!
Upcoming household hazardous waste collections
Tips for attracting birds
Yes, it’s safe, but does it work?
Snakes in the yard
Timing window approaching for control of leafy spurge
Soybean seed treatment good idea in cool, moist soils
Proper ballast improves tractor efficiency, stability
Controlling bolting musk thistle
Managing ponds for fish
Weed control in new tree plantings
Milk calcium for all it’s worth!
Focus on Food
The Clean Hands Campaign
How clean …

Cropwatch No. 98-7, May 1, 1998, Lisa Brown Jasa

Crop Watch (1994–2005)

Inside

Pale western cutworm……….62

Correction……….62

Field updates ………. 62

Inoculants for soybeans……….63

Benefit of rotation ………. 63

Insects in sorghum ………. 66

Crop diagnostic clinic………. 67

Reducing drift ………. 68

Cleaning sprayers ………. 69

Nitrogen at planting ………. 70

Treating turf diseases ………. 70

Chemically Mediated Foraging Preference Of Black Bears ( Ursus Americanus), Bruce A. Kimball, Dale L. Nolte, Richard M. Engeman, John J. Johnston, Frank R. Stermitz

United States Department of Agriculture Wildlife Services: Staff Publications

The role of chemical constituents in the foraging behavior of black bears (Ursus americanus) was investigated using two field studies. Vascular tissue samples were collected from Douglas-fir (Pseudotsuga menziesii) trees recently foraged by black bears. Samples were extracted and analyzed by liquid and gas chromatography to determine carbohydrates and terpenes, respectively. Chemical data were subjected to correlation analyses and multiple regression to examine if they adequately describe observed foraging preferences. Free-ranging black bears also were offered a choice of four test diets that differed in content of carbohydrates and terpenes. Results indicated that forage preferences were …

Cropwatch No. 98-6, April 24, 1998, Lisa Brown Jasa

Crop Watch (1994–2005)

Special focus: Soybeans

Field updates…………….52

Nitrogen……………. 53

Phosphorus, potassium…………….53

Liming…………….54

Inoculation…………….54

Alfalfa weevils…………….55

Managing soybean chlorosis…………….56

Clover leaf weevils…………….56

Weeds in soybeans…………….57

Cultural practices…………….58

Diagnostic Clinic…………….58

Sclerotinia stem rot…………….59

Musk thistle control…………….60