Digital Commons Network^™

Opportunities For Warm Season Grasses, Ken Johnson

Kentucky Grazing Conference

Today I would like to do two things, first talk a little about warm season grasses, where they come from, and where they might fit in your grazing program; and second, talk about the four major native grass species and two introduced species.

Native warm season perennial grasses were an important part of the native forage species of Kentucky, supplying food and cover for deer, buffalo, and other wildlife when settlers arrived into Kentucky. With settlers plowing, overgrazing, and the introduction of other forages, Native Warm Season Grasses (NWSGs) were on the brink of extinction. These grasses included switchgrass, eastern …

Optimize Grazing--Minimize Stored Feed, Garry D. Lacefield

Kentucky Grazing Conference

The title “Optimize Grazing – Minimize Stored Feed” appears to be a bit redundant at first glance. Indeed if we optimize grazing, we will certainly minimize the amount of stored feed required to winter our animals. Putting both concepts together can serve as a reminder of the tremendous benefit of both.

Grazing represents the cheapest source of nutrients for our beef industry. Several studies have shown that the best predictor of profitability in the beef industry is cost of stored feed. In Kentucky, specifically, that means cost/amount of hay required to winter on beef animals.

Foreword And Kfgc Award Winners [2003], Garry D. Lacefield, Christi L. Forsythe

Kentucky Grazing Conference

No abstract provided.

Miscellaneous Publication 26/2003 - Benefit -Cost Analysis Of Soil Acidity Research Development And Extension In Western Australia, 1992-93 To 2001-02, Michael O'Connell, Chris Gazey

Farm Systems and Economics published reports

The program of publicly funded soil acidity RD&E' conducted in Western Australia from 1992-93 to 2001-02 is expected to deliver benefits to the farm sector over future years. Benefit-cost analysis indicates that these industry benefits should outweigh the public cost of the RD&E several times over.

Using a 20-year analysis period, the RD&E is estimated to have a net present value (NPV) of $84 million, and a benefit-cost ratio (BCR) of 5.8. Extending the analysis to 30 years results in an NPV of $135 million and a BCR of 8.7. These large returns are due to a combination of factors: …

Integrated Weed Management Plan For The Lower Las Vegas Wash, Elizabeth Bickmore

Publications (WR)

The Las Vegas Wash (Wash) is the primary drainage for the metropolitan Las Vegas Valley, eventually finding its way into the Colorado River watershed system. Pursuant to the recommendations of the Water Quality Citizens Advisory Committee, the Las Vegas Wash Coordination Committee (LVWCC) was formed in 1998 to develop a comprehensive plan for the long-term stabilization and management of the Wash. Consisting of representatives from 28 government agencies, businesses, environmental groups and citizens, the LVWCC formulated the Las Vegas Wash Comprehensive Adaptive Management Plan (CAMP) and designated the Southern Nevada Water Authority (SNWA) as the lead agency for the implementation …

Successful Field Pea Harvesting, Glen Riethmuller, Ian Pritchard

Bulletins 4000 -

Many thousands of hectares of field peas are harvested trouble free each year. Growers experience together with recent machinery innovations and modifications have solved the majority of harvesting difficulties. Optimum harvesting conditions are in a crop of uniform density on a level soil surface with the machine either working into or across the direction that the crop has been laid by the wind.

To make harvest easier the receival standard for moisture in pulses has been lifted to 14 per cent, which allows harvest to begin sooner when the crop is the range of 14 to 15 per cent moisture. …

The Prairie Naturalist Volume 35, No.3 September 2003

The Prairie Naturalist

BROWN-HEADED COWBIRDS IN GRASSLANDS: THEIR HABITATS, HOSTS, AND RESPONSE TO MANAGEMENT ▪ J. A. Shaffer, C. M. Goldade, M. F. Dinkins, D. H. Johnson, L. D. Igl, and B. R. Euliss

LlGUMIA SUBROSTRATA (BIVALVIA: UNIONIDAE) IN MINNESOTA AND ITS STATUS IN THE UPPER MIDWEST ▪ B. E. Sietman, D. E. Kelner, R. A. Hart, and M. Davis

GUIDELINES FOR FINDING NESTS OF PASSERINE BIRDS IN TALLGRASS PRAIRIE ▪ M. Winter, S. E. Hawks, J. A. Shaffer, and D. H. Johnson

RESPONSE OF THE LEAST SHREW TO PREY OLFACTORY CUES ▪ F. Punzo and C. Gonzalez

Book Reviews

North Dakota's Butterflies …

Sheep Updates 2003 - Pastures, Ed Barrett-Lennard, Hayley Norman, Robyn Dynes, David Masters, David Henry, Stephen Gherardi, Graham Donald, Asoka Edirisinghe, Chris Oldham, Richard Smith, Joanne Sneddon, Mike Hyder, Andrew Thompson, Kazue Tanaka, Roy Latta, Chris Matthews, Brad Nutt, Angela Loi, Tim Wiley

Sheep Updates

This session covers seven papers from different authors: 1. Pastures for saline land, Ed Barrett-Lennard 1Department of Agriculture, Western Australia, Hayley Norman, Robyn Dynes and David Masters CSIRO Livestock Industries, Centre for Mediterranean Agricultural Research, Floreat Park, 2. Feeding value - the essential link between pastures and animals CSIRO Livestock Industries, Centre for Environmental and Life Sciences 3. ‘Pastures from space’ - how do we do it, how well do we do it and what do producers think about it? Stephen Gherardi Department of Agriculture Western Australia Graham Donald Asoka Edirisinghe Dave Henry CSIRO Livestock Industries Chris Oldham Department of …

Sustainable Agricultural Growth In The Al-Ahsa Oasis Of Saudi Arabia: Harmonizing Wto Goals, Environmental Constraints, And National Food Security Issues, Ahmad Mohammad Al-Mass

All-Inclusive List of Electronic Theses and Dissertations

Local agricultural practices in Saudi Arabia today are shaped by local land, labor, and technological conditions, by national governmental regulations, subsidies, and price controls, and by the global impacts of foreign competition and goals of international organizations such as the World Trade Organization (WTO). Human and natural forces over which local oasis residents have no control exert more influence upon their social and economic life than do daily agricultural tasks. These forces are recognized by Saudi national planners, for agricultural development is very important to the government and to oasis dwellers in Saudi Arabia. Reducing the loss of foreign exchange, …

B.R. Wells Rice Research Studies 2002, R. J. Norman, J.-F. Meullenet

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading rice producing state in the U .S .. representing almost 46% of the total U .S. production and almost 47% of the total acres planted to rice . Rice cultural practices vary across the state and across the U.S. However, due to changing political, environmental, and economic times, the practices arc dynamic. This survey was initiated in 2002 to monitor how the changing times reflect the changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county Extension agents in each of the counties in Arkansas that produce rice. Questions …

Vascular Plant Surveys Of The Winnebago And Omaha Indian Reservations, Steven B. Rolfsmeier

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

During the summer of 2000 the Nebraska Game and Parks Commission (NGPC) undertook a vascular plant survey of the Winnebago and Omaha Indian reservations in northeast Nebraska. All funding for the project was provided by the NGPC. The primary objective of the project was to identify all native and exotic plant species growing on the reservations and to identify traditional uses of these plants by the Winnebago, Omaha and HoChunk people. Secondary objectives of the project include: 1) identify rare plant populations, 2) identify high-quality examples of native plant communities and 3) document threats to rare plant populations and native …

Home Water Self-Check: Do-It-Yourself Water Check For The Home Landscape, Todd A. Mccammon

All Current Publications

In Utah, nearly two-thirds of the water consumed by residential homeowners is used to maintain landscapes. Recent water checks conducted by Utah State University Extension found that a typical homeowner applies 80 inches of water each growing season. This is twice as much as is needed.

The Prairie Naturalist Volume 35, No.2 June 2003

The Prairie Naturalist

NEST PARASITISM ON CONSTRUCTED ISLANDS IN NORTHWESTERN NORTH DAKOTA ▪ A. L. Zimmerman, M. A. Sovada, T. K. Kessler, and R. K. Murphy

HISTORICAL AND RECENT RECORDS AND FIRST NEST RECORDS OF HENSLOW'S SPARROW IN NORTH DAKOTA ▪ J. A. Shaffer, L. D. Igl, and F. Vanhove

AMERICAN AVOCET NESTING ON CONSTRUCTED ISLANDS IN NORTH DAKOTA ▪ A. L. Dahl, D. H. Johnson, L. D. Igl, K. L. Baer, T. L. Shaffer, M. A. Johnson, and R. E. Reynolds

CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA 2002 ▪ R. N. Randall

MATERNAL LIVER AND EGG THIAMINE CONCENTRATIONS IN CHINOOK SALMON FROM …

Sustainability Issues For Agriculture In Western Australia, Anne Bennett, Ross Kingwell, Ross George

Agriculture reports

This paper describes briefly the main challenges to the sustainability of agriculture in Western Australia and outlines some means of responding the the challenges: market-based approaches; agricultural and environmental research and development; accelerated adjustment; and global and national policy initiatives. Challenges include: land resource quality (salinity, soil acidity), biodiversity, greenhouse gas emissions, climate change, water availability, food safety, and pests and diseases.

Determining The Factors That Control Respiration And Carbon Use Efficiency In Crop Plants, Jonathan M. Frantz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In the literature on plant respiration, there are two viewpoints concerning the source of respiratory control: supply (photosynthate availability) or demand (temperature dependent) limitations. While different studies indicate the primary dependency for respiration is either the supply or demand side, the two paradigms cannot both be true. The relative importance of each paradigm may depend on a number of factors including period of time during which respiration is measured, phase of plant development, environmental conditions, and species.

Studies were performed using continuous CO₂ gas-exchange instrumentation to monitor short- and long-term changes in whole canopies of lettuce, tomato, soybean, and …

Use Of Ground-Based Canopy Reflectance To Determine Radiation Capture, Nitrogen And Water Status, And Final Yield In Wheat, Glen L. Ritchie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ground-based spectral imaging devices offer an important supplement to satellite imagery. Hand-held, ground-based sensors allow rapid, inexpensive measurements that are not affected by the earth’s atmosphere. They also provide a basis for high altitude spectral indices.

We quantified the spectral reflectance characteristics of hard red spring wheat (Triticum aestivum cv. Westbred 936) in research plots subjected to either nitrogen or water stress in a two year study. Both types of stress reduced ground cover, which was evaluated by digital photography and compared with ten spectral reflectance indices. On plots with a similar soil background, simple indices such as the …

Agroecosystems Analysis From The Grass Roots: A Multidimensional Experiential Learning Course, Mary Wiedenhoeft, Steve Simmons, Ricardo Salvador, Gina Mcandrews, Charles A. Francis, James W. King, David Hole

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

An intensive, experiential travel course in Agroecosystems Analysis was conducted in Iowa, Minnesota, and Nebraska (United States) during summers of 1998 and 1999. The intended student audience was advanced undergraduate and beginning graduate students. Pretravel readings and a week-long series of farm visits, which consisted of in-depth interviews with the farmers and their families, prepared student teams to analyze and evaluate the production, economic, environmental, and social sustainability of 10 farms. Students shared their analyses both orally and in written reports. Based on a multifaceted student evaluation process, we found that participants were highly motivated, strongly engaged with the course …

Development Of A Procedure For Sustainable In Situ Aquifer Denitrification, Imtiyaz A. Khan, Roy F. Spalding

Department of Agronomy and Horticulture: Faculty Publications

Denitrification experiments have provided data showing the pitfalls and successes in developing a sustainable injection/extraction system in a sand and gravel aquifer. Experiments increase in complexity from continuous injection at one well to automated-pulsed eight well injections. In both continuous and pulsed injection of organic carbon, 40 mg NO_3-N l^–1 was reduced below the detection limit of < 0.1 mg NO_3-N l^–1 in the denitrification zones. Under continuous injection, accumulation of bacterial exudates in the vicinity of the injection well resulted in injection well clogging within ten days. Periodic cleaning of the injection well and the adjacent …

Evolution Of Wheat Streak Mosaic Virus: Dynamics Of Population Growth Within Plants May Explain Limited Variation, Roy C. French, Drake C. Stenger

Department of Plant Pathology: Faculty Publications

Like many other plant RNA viruses, Wheat streak mosaic virus (WSMV) sequence diversity within and among infected plants is low given the large number of virions produced. This may be explained by considering aspects of plant virus life history. Intracellular replication of RNA viruses is predominately linear, not exponential, which means that the rate at which mutations accumulate also is linear. Bottlenecks during systemic movement further limit diversity. Analysis of mixed infections with two WSMV isolates suggests that about four viral genomes participate in systemic invasion of each tiller. Low effective population size increases the role of stochastic processes on …

Crop Updates 2003 - -Katanning, Robert F. Park, Rob Loughman, Colin Wellings, Greg Shea, Jocelyn Ball, Natasha Littlewood, Lucy Creagh, Alex Douglas, David Stephens, Ross Brennan, Mike Bolland, Narelle Hill, Phil Michael, Francoise A. Berlandier, Christiaan Valentine, Roy Latta, M. Rodger Beermier, Keith Devenish, Blakely Paynter, Kevin Young, Robin Wilson, Ian Barclay, Robyn Mclean, Jenny Garlinge, Bill Lambe, Neil Venn, Peter Clarke, Frances C. Hoyle, Leanne Schulz, Judith Devenish

Crop Updates

This session covers sixteen papers from different authors

1. Breeding Cereals for Rust Resistance – are we losing the battle? Robert F. Park, University of Sydney

2. Stripe rust – where to now for the WA wheat industry? Robert Loughman, Department of Agriculture, Colin Wellings, University of Sydney, Greg Shea, Department of Agriculture

3. Oaten hay production, Jocelyn Ball, Natasha Littlewood and Lucy Creagh, Department of Agriculture

4. Don’t rely on ‘Spray and Pray’ Alex Douglas, Department of Agriculture

5. Seasonal outlook: What is in store for 2003, David Stephens, Department of Agriculture

6. No-till copper, phosphorus and zinc …

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Crop Updates 2003 - Geraldton, David Stephens, James Fisher, Ian Edwards, Dennis Wise, Andrew Young, Rob Loughman, Ciara Beard, Greg Shea, Blakely Paynter, Roslyn J. Jettner, Kevin Young, Kevin Walden, Geoff Thomas, Robin Wilson, Iain Barclay, Robyn Mclean, Jenny Garlinge, Bill Lambe, Neil Venn, Peter Clarke, Martin Harries, Bob French, Wayne Parker, Murray Blyth, Peter Norris, Greg Lyle, Katheryn Steadman, Amanda Ellery, Sally C. Peltzer, Kari-Lee R. Falconer, Russell Speed, Terry Piper, Harmohinder Dhammu, Bindi Webb, Paul Blackwell, Phil Logue, Nigel Moffat, Rohan Ford, Miles Obst, Frances Hoyle, Leanne Schulz, Judith Devenish, Peter Newman, Grant Morrow, Ian Foster, Darshan Sharma, Marnie Thomas, Graham Walton, Hasan Zaheer, Paul Carmody, Mike Clarke, Gregory Paul Raper

Crop Updates

This session covers twenty eight papers from different authors

1. Seasonal Outlook: What is in store for 2003, David Stephens, Department of Agriculture

2. Examining The Management Options For Wheat Crops In The Coming Season, James Fisher, Department of Agriculture

3. GMO’s – what do they offer? Ian Edwards, Grain Bio Tech Australia Pty Ltd

4. The Big Gamble – Wheat prices for 2003, Dennis Wise, Profarmer

5. Market outlook for other grains, Andrew Young, General Manager Agricorp

6. Stripe rust – where to now for the WA wheat industry? Robert Loughman, Ciara Beard and Greg Shea, Department of Agriculture

7. Baudin …

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The Prairie Naturalist Volume 35, No.1 March 2003

The Prairie Naturalist

PATTERNS OF IMPALING IN A MIGRATORY POPULATION OF THE LOGGERHEAD SHRIKE ▪ J. D. Esely and E. K. Bollinger

COMPARISON OF FEEDING IN TWO PHENOLOGICALLY DISTINCT GRASSHOPPERS ▪ K. J. Haynes

DISTRIBUTION AND TRENDS OF BANDED CANADA GEESE IN SOUTH DAKOTA ▪ J. S. Gleason, J. A. Jenks, and P. W. Mammenga

FLORISTIC ASSESSMENT OF SAND PRAIRIES AND SEDGE MEADOWS, LEE COUNTY, ILLINOIS ▪ W. C. Handel, L. R. Phillippe, and J. E. Ebinger

POULT PROTECTION BY MERRIAM'S TURKEY FEMALES TOWARDS A NORTHERN GOSHAWK ▪ C. P. Lehman

ADDITIONAL ECTOPARASITIC RECORDS OF BATS FROM KANSAS ▪ D. W. Sparks, K. …

Hillslope Nutrient Dynamics Following Upland Riparian Vegetation Disturbance, J. Alan Yeakley, David C. Coleman, Bruce L. Haines, Brian D. Kloeppel, Judy L. Meyer, Wayne T. Swank, Barry W. Argo, James M. Deal, Sharon F. Taylor

Environmental Science and Management Faculty Publications and Presentations

We investigated the effects of removing near-stream Rhododendron and of the natural blowdown of canopy trees on nutrient export to streams in the southern Appalachians. Transects were instrumented on adjacent hillslopes in a first-order watershed at the Coweeta Hydrologic Laboratory (35°03′N, 83°25′W). Dissolved organic carbon (DOC), K⁺, Na⁺, Ca²⁺, Mg²⁺, NO₃^-- -N, NH₄⁺ -N, PO₄^3---P, and SO₄^2- were measured for 2 years prior to disturbance. In August 1995, riparian Rhododendron on one hillslope was cut, removing 30% of total woody biomass. In October …

Wayne E. Sabbe Arkansas Soil Fertility Studies 2002, Nathan A. Slaton

Arkansas Agricultural Experiment Station Research Series

Rapid technological changes in crop management and production require that the research efforts also be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies contained within will allow producers to compare their practices with the university’s research efforts. Additionally, soil test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.

Alfalfa Disease Management, Paul Vincelli

Kentucky Alfalfa and Stored Forage Conference

Alfalfa can be a vigorous and productive forage crop for Kentucky farmers. Like all farm crops, however, alfalfa is subject to infectious diseases that can limit forage production. Managing these diseases is an important part of economical alfalfa production.

Weed Management In Alfalfa, Jonathan D. Green

Kentucky Alfalfa and Stored Forage Conference

The importance of weed control in forage production should not be overlooked, especially when you consider the high investment associated with alfalfa and other legume forages. Weed management strategies in forage legumes should first focus on cultural practices and then on chemical weed control options. Vigorous, densely growing forage legume stands tend to have fewer weed problems. Thus, cultural and management practices that promote a highly competitive forage stand help prevent many weed problems. These practices include: 1) liming and fertilizing fields based on soil test recommendations; 2) seeding well-adapted, vigorous, and long-lived varieties; 3) buying weed-free seed; 4) cutting …

Producing Quality Alfalfa Hay, Jimmy C. Henning, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Hay is one of the most versatile of stored forages in that (1) it can be kept for long periods of time with little loss of nutrients if protected from weather; (2) a large number of crops can be successfully used for hay production; (3) it can be produced and fed in small or large amounts; (4) it can be harvested, stored and fed by hand or the production and feeding can be completely mechanized; and (5) hay can supply most nutrients needed by many classes of livestock. Hay is, therefore, the most commonly used stored feed on most farms.

Forage Testing & Marketing Program, Allen Johnson

Kentucky Alfalfa and Stored Forage Conference

Two thousand and three marks the 141^th year for the Kentucky Department of Agriculture for testing forages. We continue to strive to offer a quality service to producers at the very least cost possible. After all these years we continue to charge only $10.00 per lot or cutting and have expanded our services to try to meet the needs of our forage and livestock producers. In January 2002, we introduced the testing of haylages and have expanded this to cover most of the haylage crops harvested in Kentucky. In cooperation with The University of Kentucky Extension Service, the department …

Buying And Selling Alfalfa Hay, Garry D. Lacefield, Jimmy C. Henning

Kentucky Alfalfa and Stored Forage Conference

Alfalfa hay is an important agricultural product. Although often fed on the farms where it is produced, much alfalfa hay is also sold as a cash crop. It often constitutes a major source of income for those who sell it, or a major expense for those who buy it. Such transactions involve billions of dollars nationwide each year.

Alfalfa Haylage And Silage, Michael Collins

Kentucky Alfalfa and Stored Forage Conference

Even with extended grazing systems, typical winter weather conditions in Kentucky necessitate the production of some stored forage for livestock during winter. Hay has traditionally been the way of storing this forage. However, when rain occurs during haymaking operations, the losses can be severe both in yield and in forage quality. Harvest losses are greatest for very dry forage and are low for very wet material like direct cut silage. Silage offers an opportunity to avoid most of the rain damage during harvest because the crop only needs to be left out overnight in most cases to be ready to …