Digital Commons Network^™

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 …

Comparison Of Native Brushland, Replanted, And Unaided Secondary Succession Plant Communities In The Lower Rio Grande Valley Of Texas, Mitchell Allen Sternberg

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Agriculture and urban development have destroyed 95% of native brushland habitat in the Lower Rio Grande Valley (LRGV) of south Texas. Therefore, habitat restoration is an important issue in the LRGV. Since 1982, the U.S. Fish and Wildlife Service has been replanting areas in the LRGV to native brushland species to establish a wildlife corridor along the lower reach of the Rio Grande. Vegetation composition of a mature brushland, a replanted habitat and an unaided secondary succession site (fallow field) were examined at one locale in the LRGV in 1999. The mature brushland edge plot had the highest species richness …

Forage News [2003-04], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forage News Loss – College of Agriculture Gain
• Forage News Reflections
• Kentucky Grazing School
• Forages for Goats
• The Meat Goat and Cattle Consortium
• Upcoming Events

Nebline, April 2003

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Plant and Pest Diagnostic Services Can Help You!
The Value of the Correct Diagnosis
Planning to Plant a Tree? Read This First!
What Day is Arbor Day?
Garden Guide
Easter Lily Care Take A Field Trip To Audubon Spring Creek Prairie
Termite Control Workshop May 22
Walk for the Birds
Summary of 2002 Nebraska West Nile Virus Surveillance Results
Household Hazardous Waste Collections for 2003
Security Concerns for Pesticides or Fertilizers
Graze Conservatively Following Drought Year
Nebraska Pioneer Farm Awards Deadline May 1
Managing Fertilizer Use in Dry Soils
Latest U.S. Drought Monitor Map
Preparing the Lawn for a Potential …

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 …

An Evaluation Of Four Crop : Weed Competition Models Using A Common Data Set, W. Deen, R. Cousens, J. Warringa, L. Bastiaans, P. Carberrys, K. Rebel, S. Riha, C. Murphy, L. R. Benjamin, C. Cloughley, J. Cussans, F. Forcella, T. Hunt, P. Jamieson, John Lindquist, E. Wangs

Department of Agronomy and Horticulture: Faculty Publications

To date, several crop : weed competition models have been developed. Developers of the various models were invited to compare model performance using a common data set. The data set consisted of wheat and Lolium rigidum grown in monoculture and mixtures under dryland and irrigated conditions. Results from four crop : weed competition models are presented: ALMANAC, APSIM, CROPSIM and INTERCOM. For all models, deviations between observed and predicted values for monoculture wheat were only slightly lower than for wheat grown in competition with L. rigidum, even though the workshop participants had access to monoculture data while parameterizing models. …

Keep The License Agreements Coming: The Effects Of J.E.M. Ag Supply, Incorporated V. Pioneer Hi-Bred International, Incorporated On Universities' Use Of Intellectual Property Laws To Protect Their Plant Genetic Research, Timothy P. Daniels

Brigham Young University Education and Law Journal

No abstract provided.

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. …

Review Of Molecular Biology Of Fungal Development, Mycology Series, Volume 15, Marty Dickman

Department of Plant Pathology: Faculty Publications

Numerous publications, books, and textbooks are available that treat the subject of developmental biology. Far less is available detailing the fungi, an important group of organisms that have implications in a broad variety of contexts from medical to agricultural to food, and of course as model systems for “higher” eukaryotes. This nicely edited book by Osiewacz is an attempt to fill that gap. He has compiled an impressive list of authors, who represent leaders in their respective fields. This gives readers a detailed and current view of a broad array of fungal processes and lifestyles, ranging from saprophytes to pathogens …

Nebline, March 2003

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

What Does Drought Stress Do to Trees and Landscape Plants?
2003 All-America Selections
Garden Guide
Landscaping, Home Maintenance Helps Prevent Termites
Install Nest Boxes for Birds Now
Termite Control Workshop May 22
Carpenter Ants: Indicator of Moisture Problems
Consider Drought When Preparing Pasture Leases
Pesticide Collection March 17
Prescribed Pasture Burning School April 4
Latest U.S. Drought Monitor Map
Animal Unit Values of Various Types and Sizes of Grazing Animal
Answers to Questions About Liming Acid Soils
Overview of Direct Marketing Methods for Produce
Cleaning the Kitchen Cupboard: Can This Food Be Saved? (Part 2)
Healthy Eating: Enjoy Nebraska Foods …

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.

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, The Queen Of Forage Crops — Reflections After Sixty Years Experience With The Crop, Warren C. Thompson

Kentucky Alfalfa and Stored Forage Conference

Yes, it is true I have been involved with alfalfa for 60 years and then some. Fact is I was fortunate enough to pick the World's best forage on which to base much of my career about the same time I fell in love with and married the best lady I ever knew. Betty has stuck with me through these crazy wonderful years. She was largely responsible for matters at home and raising the family. She managed our family and home while I was on the move trying to encourage maybe even coerce farmers in Kentucky and then over the …

Advances In Developing Better Alfalfa Varieties, Jim Moutray

Kentucky Alfalfa and Stored Forage Conference

Alfalfa breeders continue to actively pursue the development of varieties that will bring more benefits to farmers. Yield and better persistence are our highest priorities. Other traits under selection can make alfalfa easier and cheaper to grow, better and safer for livestock and more attractive to livestock.

The goal of this paper is to update you on the types of alfalfa research going on in the U.S., time tables on when you may expect to see these new developments and how they may help you in your operation.

Alfalfa Hay Quality: Terms And Definitions, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

At the 22^nd Kentucky Alfalfa Conference we discussed the relationship among Alfalfa - Yield-Quality-Persistence. In our presentation, we indicated that all three components must be considered for best management of alfalfa stands. Over the past week, I have looked through the past twenty-two years of Alfalfa Conference Proceedings. It's interesting, but not surprising that we have focused far more attention on yield than on quality and/or persistence.

Alfalfa yield (quantity) and quality are both important; however, it is easier for producers to recognize problems associated with quantity than quality because quantity can be easily assessed visually. Thus, forage quantity …

Crop Updates - 2003 Pulses, M. Harries, R. French, I. Pritchard, R. Beermier, N. Poulish, S. White, M. Seymour, P. White, T. Pope, M. Blyth, L. Young, N. Abbas, J. Plummer, K. Siddique, D. Harris, T. Khan, K. Regan, G. P. Riethmuller, B. Macleod, J. Berger, N. Turner, F. Shan, H. Clarke, P. Smith, M. Baker, H. Dhammu, T. Piper, D. Nicholson, M. Materne, J. Howieson, R. Yates, S. Loss, Z. Rengel, B. Bowden, M. Bolland, J. Croser, A. Harrod, J. Galloway, C. Beeck, J. Wroth, W. Cowling, M. Salam, A. Diggle, R. Jones, B. Coutts, L. Smith, O. Byrne, D. Hardie, J. Ridsill-Smith, H. Sharma, K. Mann, S. Kelly, S. Sharma, H. Hunter, V. Vanstone

Crop Updates

This session covers fifty one papers from different authors

2002 PULSE INDUSTRY HIGHLIGHTS

CONTRIBUTORS

BACKGROUND

2002 REGIONAL ROUNDUP

1.Northern Agricultural Region, M. Harries, Department of Agriculture

2.Central agricultural Region, R. French and I. Pritchard, Department of Agriculture

3.Great Southern and Lakes, R. Beermier, N. Poulish and S. White, Department of Agriculture

4.Esperance Mallee, M. Seymour, Department of Agriculture

PULSE PRODUCTION ECONOMY AND GENETIC IMPROVEMENT

5.Faba Bean, P. White, Department of Agriculture

6.Germplasm evaluation, P. White, T. Pope, M. Harries and M. Seymour, Department of Agriculture

7.Row spacing and sowing rate, M. Seymour, Department …

Crop Updates 2003 - Cereals, Graham Crosbie, Robert Loughman, Collin Wellings, Greg Shea, Simon Mckirdy, Neil C. Turner, Brenda Shackley, Wal Anderson, Darshan Sharma, Mohammad Amjad, Steve Penny Jr, Melanie Kupsch, Anne Smith, Veronika Reck, Pam Burgess, Glenda Smith, Elizabeth Tierney, Peter Burges, Moin U. Salam, Megan Collins, Art Diggle, Blakely Paynter, Roslyn J. Jettner, Kevin Young, Jocelyn Ball, Natasha Littlewood, Lucy Anderton, Irene Waters, Tim Setter, Jeff Russell, Reg Lance, Chengdao Li, Sue Broughton, Michael Jones, Grace Zawko, Keith Gregg, Stephen Loss, Frank Ripper, Ryan Guthrie, Daniel Bell, Patrick Gethin, Narelle Hill, Laurence Caeslake, Vivien Vanstone, Sean Kelly, Helen Hunter, Christopher R. Newman

Crop Updates

This session covers twenty one papers from different authors:

PLENARY

1. Recognising and responding to new market opportunities in the grains industry, Graham Crosbie, Manager, Grain Products Research, Crop Breeding, Plant Industries, Department of Agriculture

2. Stripe rust – where to now for the WA wheat industry? Robert Loughman¹, Colin Wellings² and Greg Shea¹¹Department of Agriculture, ²University of Sydney Plant Breeding Institute, Cobbitty (on secondment from NSW Agriculture)

3. Benefits of a Grains Biosecurity Plan, Dr Simon McKirdy, Plant Health Australia, Mr Greg Shea, Department of Agriculture

4. Can we improve …

Nebline, February 2003

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Access Extension’s Extensive Resources On the Information Highway
An Inside Look at lancaster.unl.edu
2003 All-America Rose Selections
Garden Guide
Hints for Starting Transplants
Azalea Plant Care
Check for Vole Damage
Hunting Workshop: Spring Turkey
Protect Your Well Water
Natural Insecticides Aren.t Always So Safe
Chemigation Training Feb. 18
Computerized Financial Record Keeping Workshops
Unwanted Pesticide Collection March 17
Workshop Dates and Locations
Latest U.S. Drought Monitor Map
Selling Horticulture Produce
Selecting and Using Hardwood Firewood
Cleaning the Kitchen Cupboard: Can This Food Be Saved?
Healthy Eating: Enjoy Nebraska Foods
Making the Five Food Groups “Come Alive” for Pathways Families
Web …

The Vascular Flora Of The Tablelands: A Natural Region In The Northeastern Section Of The Knobs Of Kentucky, Kim L. Feeman

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Kim L. Feeman on January 22, 2003.

Central Crops And Soils Research Station Highmore, South Dakota: Annual Progress Report, 2002, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 2002 progress report for the Central Crops and Soils Research Station at Highmore, South Dakota State College. This document represents the research conducted at the Station during the 2002 crop season including: temperature and precipitation data, field evaluations of woody plant materials, evaluation of a naturalized rangeland population of alfalfa, winter wheat breeding, resistance of sunflower germplasm to the red sunflower seed weevil, weed control fertilizer and soil test effects on wheat yield, influence of planting dates on insect infestations.

Rna Interference: Traveling In The Cell And Gaining Functions?, Heriberto D. Cerutti

Center for Plant Science Innovation: Faculty Publications

Double-stranded RNA can induce the degradation of homologous RNAs in organisms as diverse as protozoa, animals, plants and fungi, resulting in post-transcriptional gene silencing. But in some species, RNA-mediated processes can also lead to translational repression, DNA methylation, heterochromatin formation or DNA elimination. In some situations, amplification of the “trigger” double-stranded RNA seems to be required for efficient silencing. These findings imply that RNA-mediated mechanisms can control gene expression at both the transcriptional and the post-transcriptional level, and that they can operate in the nuclear and the cytoplasmic compartments.

Unusual Life Style Of Giant Chlorella Viruses, James L. Van Etten

Department of Plant Pathology: Faculty Publications

Paramecium bursaria chlorella virus (PBCV-1) is the prototype of a family of large, icosahedral, plaque-forming, dsDNA viruses that replicate in certain unicellular, eukaryotic chlorella-like green algae. Its 330-kb genome contains ~373 protein-encoding genes and 11 tRNA genes. The predicted gene products of ~50% of these genes resemble proteins of known function, including many that are unexpected for a virus, e.g., ornithine decarboxylase, hyaluronan synthase, GDP-D-mannose 4,6 dehydratase, and a potassium ion channel protein. In addition to their large genome size, the chlorella viruses have other features that distinguish them from most viruses. These features include: (a) The viruses encode multiple …

A Watershed Analysis Of Threemile Pond: Implications For Water Quality And Land Use Management, Colby Environmental Assessment Team, Colby College, Problems In Environmental Science Course (Biology 493), Colby College

Colby College Watershed Study: Threemile Pond (2003)

The 2003 Colby Environmental Assessment Team chose to study the Threemile Pond watershed. The Threemile Pond watershed is located in Vassalboro, China., Windsor, and Augusta, Maine. Threemile Pond is a popular site for recreation and is home to a wide range of flora and fauna. Like all other lakes in Maine, it is a young lake. However, intensive human activity in the watershed contributes a substantial amount of nutrients and the lake has algal blooms annually in the summer months. The purpose of this study was to assess the impact of land use and development on the water quality of …

A Protein Kinase From Colletotrichum Trifolii Is Induced By Plant Cutin And Is Required For Appressorium Formation, M. B. Dickman, Y.-S. Ha, Z. Yang, B. J. Adams, C. Huang

Department of Plant Pathology: Faculty Publications

When certain phytopathogenic fungi contact plant surfaces, specialized infection structures (appressoria) are produced that facilitate penetration of the plant external barrier; the cuticle. Recognition of this hydrophobic host surface must be sensed by the fungus, initiating the appropriate signaling pathway or pathways for pathogenic development. Using polymerase chain reaction and primers designed from mammalian protein kinase C sequences (PKC), we have isolated, cloned, and characterized a protein kinase from Colletotrichum trifolii, causal agent of alfalfa anthracnose. Though sequence analysis indicated conserved sequences in mammalian PKC genes, we were unable to induce activity of the fungal protein using known activators …

Planning For Population Viability On Northern Great Plains National Grasslands, Fred B. Samson, Fritz L. Knopf, Clinton W. Mccarthy, Barry R. Noon, Wayne R. Ostile, Susan M. Rinehart, Scott Larson, Glenn E. Plumb, Gregory L. Schenbeck, Daniel N. Svingen, Timothy W. Byer

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Broad-scale information in concert with conservation of individual species must be used to develop conservation priorities and a more integrated ecosystem protection strategy. In 1999 the United States Forest Service initiated an approach for the 1.2 x 106 ha of national grasslands in the Northern Great Plains to fulfill the requirement to maintain viable populations of all native and desirable introduced vertebrate and plant species. The challenge was threefold: 1) develop basic building blocks in the conservation planning approach, 2) apply the approach to national grasslands, and 3) overcome differences that may exist in agency-specific legal and policy requirements. Key …

Agricultural Biotechnology In China: An Unreachable Goal?, Stanley P. Kowalski

Law Faculty Scholarship

Recently there has been much discussion about the People’s Republic of China’s (PR) investment in and commitment to agricultural biotechnology (agri-biotech). Rapid economic expansion, population growth and technological development are changing the PRC; accompanying these changes is increased demand for high-quality food and fibre. Agri-biotech is optimistically viewed as an important way to meet these demands. Whereas Chinese technological capacity in agri-biotech has advanced significantly over the past decade, it may be unable to meet these challenges. Even when this capacity is combined with good intentions, enlightened policy and large capital outlays, accelerated development of agri-biotech may nevertheless be precluded. …

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 4 2003, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Forage News [2003-01], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Happy New Year!
• Regional Grazing Conference Coming to Hannibal, Missouri
• Oops!!!
• Organic Agriculture Depends on Inorganic Nutrients
• 23^RD Alfalfa Conference Set for February 20
• Upcoming Events

The Pseudomonas Syringae Type Iii-Secreted Protein Hopptod2 Possesses Protein Tyrosine Phosphatase Activity And Suppresses Programmed Cell Death In Plants, Avelina Espinosa, Ming Guo, Vincent C. Tam, Zheng Qing Fu, James R. Alfano

Center for Plant Science Innovation: Faculty Publications

The bacterial plant pathogen Pseudomonas syringae possesses a type III protein secretion system that delivers many virulence proteins into plant cells. A subset of these proteins (called Avr proteins) is recognized by the plant’s innate immune system and triggers defences. One defence-associated response is the hypersensitive response (HR), a programmed cell death (PCD) of plant tissue. We have previously identified HopPtoD2 as a type III secreted protein from P. s. pv. tomato DC3000. Sequence analysis revealed that an N-terminal domain shared homology with Avr- PphD and a C-terminal domain was similar to protein tyrosine phosphatases (PTPs). We demonstrated that purified …