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The Prairie Naturalist Volume 34, No. 1/2 March/June 2002 Jun 2002

The Prairie Naturalist Volume 34, No. 1/2 March/June 2002

The Prairie Naturalist

LOCALIZED MOVEMENTS AND SITE FIDELITY OF WHITETAILED DEER IN THE NORTHERN GREAT PLAINS ▪ B. J. Kernohan, J. A. Jenks, and D. E. Naugle

SPAWNING-SEASON HOMING OF COMMON CARP AND RIVER CARPSUCKER ▪ J. L. Bonneau and D. L. Scamecchia

HOME RANGES OF RING-NECKED PHEASANTS IN NORTHWESTERN KANSAS ▪ R. D. Applegate, B. E. Flock, P. S. Gipson, M. W. McCoy, and K. E. Kemp

RESPONSES OF BIGHORN SHEEP TO DISTURBANCE IN LOW-ELEVATION GRASSLANDS ▪ R. W. Sayre, R. W. Seabloom, and W. F. Jensen

DISTRIBUTION OF CHANNEL CATFISH LIFE STAGES IN A PRAIRIE RIVER BASIN ▪ . J. C. …


Property Planning Manual For The Swan-Canning Catchment - February 2002, Catherine Nind, Kylie Banfield, Brian Lloyd Jun 2002

Property Planning Manual For The Swan-Canning Catchment - February 2002, Catherine Nind, Kylie Banfield, Brian Lloyd

Farm Systems and Economics published reports

Perth, its suburbs and adjacent semi rural and rural areas are part of the Swan-Canning catchment. Ona broad scale the Swan and Canning Rivers are part of a large drainage system that collects and drains water from across the catchment via a myriad of small channels, creeks, brooks and drains which, working together, concentrates the flow into a single water body, the Swan-Canning Estuary. This drainage system collects water both from the surface of the land and also from water, which seeps beneath the surface and moves underground.

The water may contain a considerable variety of potential pollutants, such as …


Communicator-In-Chief: Presidential Use Of Television Past, Present, And Future, Jenna Wasson May 2002

Communicator-In-Chief: Presidential Use Of Television Past, Present, And Future, Jenna Wasson

Honors Theses

This thesis seeks to determine how television has changed as a communication medium for presidents over the past half century. An evaluation of the evolving ways presidents use television to communicate with and to build support from the American people has been conducted. Presidential communication strategies have been identified by drawing primarily from primary sources written by presidents and White House staff. Television technology and the television audience have changed over the years. Presidents have taken a more pro-active, aggressive role in their efforts to harness television for their own purposes. Why have these changes occurred? What impact have these …


Compositional Trends And Spatial Patterns Over A Quarter Century: Forest Dynamics Of Dobbs Park, Indiana, Nancy Hoalst Pullen May 2002

Compositional Trends And Spatial Patterns Over A Quarter Century: Forest Dynamics Of Dobbs Park, Indiana, Nancy Hoalst Pullen

All-Inclusive List of Electronic Theses and Dissertations

Thirty-five permanent plots were reexamined to identify and describe the spatial and temporal characteristics of Dobbs Park, an isolated old-growth forest stand in westcentral Indiana. The 3.6 ha stand was resurveyed in summer 2000, with all stems greater than 10 cm dbh measured, and accessions and deaths recorded. The results are compared to original data collected in summer 1974, with compositional and spatial patterns identified via GIS and spatial analysis. The stand has declined slightly in density from 342 stems/ha to 333.15 stems/hectare (-2.6%) while basal area (dominance) for the stand has increased from 23.6 m2/ha to 25.8 m2/ha (+8.8%) …


Evapotranspiration Using A Satellite-Based Surface Energy Balance With Standardized Ground Control, Ricardo Trezza May 2002

Evapotranspiration Using A Satellite-Based Surface Energy Balance With Standardized Ground Control, Ricardo Trezza

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study evaluated the potential of using the Surface Energy Balance Algorithm for Land (SEBAL) as a means for estimating evapotranspiration (ET) for local and regional scales in Southern Idaho. The original SEBAL model was refined during this study to provide better estimation of ET in agricultural areas and to make more reliable estimates of ET from other surfaces as well, including mountainous terrain. The modified version of SEBAL used in this study, termed as SEBALID (lD stands for Idaho) includes standardization of the two SEBAL "anchor" pixels, the use of a water balance …


1080 Summary Information, Department Of Agriculture, Western Australia, Department Of Conservation And Land Management, Western Australia, Department Of Health, Western Australia May 2002

1080 Summary Information, Department Of Agriculture, Western Australia, Department Of Conservation And Land Management, Western Australia, Department Of Health, Western Australia

Biosecurity research reports

Fluoroacetate, the active ingredient of 1080, occurs naturally in toxic plants in Australia, South Africa, and South America. Manufactured I080 underpins most vertebrate pest control programs in Australia and New Zealand. Fluoroacetate occurs naturally in about 40 plant species in Australia with most of these plants restricted to the south-west of WA.

I080 was introduced to rabbit control programs in the early 1950s and therefore has a long history of proven effectiveness and safety in Australia. There have been few repo1ted problems associated with human safety, environmental persistence, bioaccumulation or impact on populations of non-target species.

In particular, I080 baits …


Guidelines For Management Of Farmland Adjacent To The Busselton Wetlands, William Oldfield, Department Of Conservation And Land Management, Department Of Planning And Infrastructure May 2002

Guidelines For Management Of Farmland Adjacent To The Busselton Wetlands, William Oldfield, Department Of Conservation And Land Management, Department Of Planning And Infrastructure

Bulletins 4000 -

The Busselton Wetlands are a chain of wetlands that lie parallel with the coastline of Geographe Bay, Western Australia and in close proximity to the town of Busselton. The main issues for the maintenance of quality of the wetlands are nutrient levels and habitat value. This guide outlines many of the current best practices related to farming around wetlands.


The Pollinator Fauna Of Two Spring Wildflowers Of Midwestern Deciduous Forest, Erigenja Bulbosa And Claytonia Virginica, Robert P. Jean May 2002

The Pollinator Fauna Of Two Spring Wildflowers Of Midwestern Deciduous Forest, Erigenja Bulbosa And Claytonia Virginica, Robert P. Jean

All-Inclusive List of Electronic Theses and Dissertations

Eastern deciduous forests have spectacular spring floral display and a diverse array of insect pollinators. From March to May, some 20-25 species of understory herbs flower in west-central Indiana. I focused on the earliest species to bloom, Erigenia bulbosa (Apiaceae), and the most abundant, Claytonia virginica (Portulacaceae), which flowers immediately after Erigenia. l characterized insect visitor assemblages in terms of species richness and relative abundance, and measured visitation rates. For Erigenia (Chapter 1), I asked whether early flowering was necessarily associated with pollinator scarcity. I examined six sites in 2000 and resampled three of these in 2001. Erigenia attracted 10 …


Miscellaneous Publication 8/2002 - Statistics Report For The Western Australian Floriculture Industry - August 2000, Department Of Agriculture, Western Australia Apr 2002

Miscellaneous Publication 8/2002 - Statistics Report For The Western Australian Floriculture Industry - August 2000, Department Of Agriculture, Western Australia

Horticulture published reports

Statistical data plays an important role in many decisions faced by both established and prospective businesses within all industry sectors. In order to offer a better service to its customers, the Department of Agriculture (the Department) requires information regarding the cutflower and nursery industry within Australia and Western Australia.

Though there are many avenues available in order to obtain this statistical information, both locally and nationally, there is no concise summary available. In addition, information obtained must be assessed in detail to determine its reliability and relevance.

Current statistics for both the Australian and Western Australian nursery and cutflower industries …


Phylogenetic Relationships, Strain Diversity And Biogeography Of Tritimoviruses, Frank Rabenstein, Dallas L. Seifers, Jorg Schubert, Roy C. French, Drake C. Stenger Mar 2002

Phylogenetic Relationships, Strain Diversity And Biogeography Of Tritimoviruses, Frank Rabenstein, Dallas L. Seifers, Jorg Schubert, Roy C. French, Drake C. Stenger

Department of Plant Pathology: Faculty Publications

North American and Eurasian isolates of Wheat streak mosaic virus (WSMV; genus Tritimovirus) and Oat necrotic mottle virus (ONMV; genus Rymovirus) were examined. Nine WSMV isolates differentially infected oat, barley, inbred maize line SDp2 and sorghum line KS56. The WSMV isolates clustered into groups based on phylogenetic analyses of the capsid protein (CP) cistron and flanking regions. WSMV isolates from the United States (US) and Turkey were closely related, suggesting recent movement between continents. Although more divergent, WSMV from Iran (WSMV-I) also shared a most recent common ancestor with the US and Turkish isolates. Another group of WSMV …


Package Options For Alfalfa, Michael Collins Feb 2002

Package Options For Alfalfa, Michael Collins

Kentucky Alfalfa and Stored Forage Conference

Most of the hay crop in Kentucky is harvested as dry hay and stored in round bales of various sizes for feeding on the farm. Most of the round-baled hay in Kentucky is used on-farm in feeding beef and dairy cattle. When alfalfa hay in round bales is left outside without protection from the weather, large losses in DM yield and in forage quality usually result. We routinely measure DM losses in the range of 20- 35% for a normal length hay storage season. Our research has shown that several economical storage options exist for protecting this hay from weathering. …


Marketing Kentucky Hay, Billy Ray Smith Feb 2002

Marketing Kentucky Hay, Billy Ray Smith

Kentucky Alfalfa and Stored Forage Conference

The production of hay and pasture crops is essential to a profitable future for Kentucky agriculture. The Commonwealth ranked seventh in the nation in hay production in the year 2000 with 6.2 million tons. These forages provide the bulk of the feed supply for our livestock industry. In addition, a significant portion of our hay crop is marketed, both to in-state and out-of-state buyers.


Innovative Loading And Stacking Systems For Custom Hay Sales, Tom Keene Feb 2002

Innovative Loading And Stacking Systems For Custom Hay Sales, Tom Keene

Kentucky Alfalfa and Stored Forage Conference

As the face of agriculture continues to change, so does the hay industry. What was standard operating procedure twenty years ago is now no longer economically feasible in the cash hay industry. This is especially true in the loading and stacking end of the business.

The business has changed because new technology along with the dramatic decrease in the availability of "hand labor" has helped to drive the need for new loading and stacking systems for the hay industry. These two phenomenon will continue to drive us toward total mechanization in the hay industry in fact many hay producers are …


Designing A Grazing System For Alfalfa, Ken Johnson Feb 2002

Designing A Grazing System For Alfalfa, Ken Johnson

Kentucky Alfalfa and Stored Forage Conference

As we think about grazing alfalfa, we should decide why we are considering alfalfa and where it fits. I want to address some of these issues from my prospective as a grazer with several years experience and as an agriculture employee working with many grazers over the years. Alfalfa is the most productive, high quality grazing forage we can grow in Kentucky; we need to be using it more.


Grazing Alfalfa At The Western Kentucky University Farm, Byron Sleugh, Raquel Stiles, David K. Stiles, Amanda Canty, Curtis Mitchell Feb 2002

Grazing Alfalfa At The Western Kentucky University Farm, Byron Sleugh, Raquel Stiles, David K. Stiles, Amanda Canty, Curtis Mitchell

Kentucky Alfalfa and Stored Forage Conference

Alfalfa has been around for centuries. In all this time, it was used in many different ways to provide high quality forage to livestock. In fact, in the area where alfalfa originated, the word actually means "horse power". We have come a long way since then and alfalfa is used for a wide range of animals, from rabbits to rhinos.

In order to maximize the efficiency of utilization of alfalfa, it has become necessary to graze it. Grazing is preferred over harvesting and storage for several reasons: less equipment and thus lower cost, less harvest loss, and greater quality forage …


Managing Alfalfa For Yield-Quality-Persistence, Garry D. Lacefield Feb 2002

Managing Alfalfa For Yield-Quality-Persistence, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Alfalfa is a premier forage legume that has played an important role in Kentucky's forage-livestock program for many years. It's role at present is increasing and it's most significant role is yet to come.


Advances In Alfalfa Breeding — What Will The Alfalfa Variety Of The Future Smell, Taste, Look And Act Like?, Jimmy C. Henning Feb 2002

Advances In Alfalfa Breeding — What Will The Alfalfa Variety Of The Future Smell, Taste, Look And Act Like?, Jimmy C. Henning

Kentucky Alfalfa and Stored Forage Conference

Alfalfa is the highest quality, highest yielding and arguably the highest value forage crop in Kentucky and in the US. It is useful as hay, haylage or pasture for a variety of species of livestock. It is well adapted to Kentucky and is an important part of the forage/livestock system.

Alfalfa breeders are actively working to develop varieties that will meet and exceed farmer expectations for yield and persistence. In addition, other traits are sought after to make the variety meet a special need or to have better marketability or attraction to the customer.

So what will the alfalfa of …


Foreword [2002], Garry D. Lacefield Feb 2002

Foreword [2002], Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

This is the front matter of the proceedings.


Crop Updates 2002 - Cereals, Peter Burgess, Gary Fawell, Dean A. Diepeveen, Tim Setter, Jeff Russell, Tony Seymour, Robin Wilson, Iain Barclay, Robyn Mclean, Robert Loughman, Jenny Garlinge, Bill Lambe, Neil Venn, Peter Clarke, Mohammad Amjad, Wal Anderson, Raffael Del Cima, James Bee, Darshen Sharma, Sheena Lyon, Melaine Kupsch, Pam Burges, Veronika Reck, Brenda Shackley, Ray Tugwell, Bindi Webb, Steve Penny Jr, James Fisher, Bill Bowden, Craig Scanlan, Senthold Asseng, Michael Robertson, M. A. Hamza, G. Mcconnell, W. K. Anderson, Md Shahajahan Miyan, Darshan Sharma, Daya Patabendige, Patrick Gethin, Stephen Loss, Tim O'Dea, Ryan Guthrie, Lisa Leaver, Tyrone Henning, Lionel Martin, Narelle Hill, Simon Wallwork, Laurence Carslake, Darren Hughes, Glen Mcdonald, Nichole Burges, Dominie Wright, Jenny Hawkes, Roger Jones, Kith Jayasena, Kazue Tanaka, Vanessa Johnson, Robert Loughman, Josh Jury, Sean Kelly, Shashi Sharma, Robert Park, Phil Michael, Debbie Thackray, Christopher Newman, Garren Knell, Kevin Povey, David Stephens Feb 2002

Crop Updates 2002 - Cereals, Peter Burgess, Gary Fawell, Dean A. Diepeveen, Tim Setter, Jeff Russell, Tony Seymour, Robin Wilson, Iain Barclay, Robyn Mclean, Robert Loughman, Jenny Garlinge, Bill Lambe, Neil Venn, Peter Clarke, Mohammad Amjad, Wal Anderson, Raffael Del Cima, James Bee, Darshen Sharma, Sheena Lyon, Melaine Kupsch, Pam Burges, Veronika Reck, Brenda Shackley, Ray Tugwell, Bindi Webb, Steve Penny Jr, James Fisher, Bill Bowden, Craig Scanlan, Senthold Asseng, Michael Robertson, M. A. Hamza, G. Mcconnell, W. K. Anderson, Md Shahajahan Miyan, Darshan Sharma, Daya Patabendige, Patrick Gethin, Stephen Loss, Tim O'Dea, Ryan Guthrie, Lisa Leaver, Tyrone Henning, Lionel Martin, Narelle Hill, Simon Wallwork, Laurence Carslake, Darren Hughes, Glen Mcdonald, Nichole Burges, Dominie Wright, Jenny Hawkes, Roger Jones, Kith Jayasena, Kazue Tanaka, Vanessa Johnson, Robert Loughman, Josh Jury, Sean Kelly, Shashi Sharma, Robert Park, Phil Michael, Debbie Thackray, Christopher Newman, Garren Knell, Kevin Povey, David Stephens

Crop Updates

This session covers thirty one papers from different authors:

VARIETIES AND BREEDING

1. Agronomic evaluation of wheat and barley in the central wheatbelt of Western Australia, Peter Burgess1and Gary Fawell2, 1Agritech and 2Farmanco Management

2. Evaluating stress tolerance to terminal drought by Western Australian wheats, Dean Diepeveen and Dr Tim Setter, Department of Agriculture

3. Broadscale wheat variety comparisons featuring Wyalkatchem, Jeff Russell, Department of Agriculture

4. Australian crop accreditation system variety selector, Tony Seymour, Australian Crop Accreditation System

5. Future wheat varieties, Robin Wilson, Iain Barclay,Robyn McLean, Robert Loughman, …


Crop Updates 2002 - Farming Systems, Peter Metcalfe, Mike Ewing, Roy Latta, Keith Devenish, Diana Fedorenko, Clayton Butterly, Chantelle Butterly, Kim Diamond, Neil Diamond, Stuart Mcalpine, Bill Bowden, Jessica Johns, Terry Piper, David Bowran, Robert Beard, Phil Ward, Dominie Wright, Nichole Burges, Roger Jones, Danae Harman, Greg Shea, George Yan, David Tennant, David Hall, Anyou Liu, Clinton Revell, Candy Hudson, Andrew Blake, Natalie Lauritsen, John Fosu-Nyarko, Roger Jones, Lisa Smith, Mike Jones, Geoff Dwyer, Bill Bowden, Michael O'Connell, Chris Gazey, David Gartner, Amanda Miller, Richard W. Bell, K. Frost, Mike Wong, Ross Brennan, N. J. Blake, G. Mconnell, D. Patabendige, N. Venn, Derk Bakker, Greg Hamilton, Dave Houlbrooke, Cliff Spann, Paul Blackwell, Bindi Webb, G. Lyle, K. Wittwer, Perry Dolling, Senthold Asseng, Ian Fillery, Michael Robertson, Caroline Peek, David Rogers, Peter Portman, Jeff Russell, Greg Shea, Ben Henderson, Ross Kingwell, Tresslyn Walmsley, Jean Galloway, Debbie Thackray, Moin Salam, Art Diggle, William J. Macleod, Jenny Hawkes Feb 2002

Crop Updates 2002 - Farming Systems, Peter Metcalfe, Mike Ewing, Roy Latta, Keith Devenish, Diana Fedorenko, Clayton Butterly, Chantelle Butterly, Kim Diamond, Neil Diamond, Stuart Mcalpine, Bill Bowden, Jessica Johns, Terry Piper, David Bowran, Robert Beard, Phil Ward, Dominie Wright, Nichole Burges, Roger Jones, Danae Harman, Greg Shea, George Yan, David Tennant, David Hall, Anyou Liu, Clinton Revell, Candy Hudson, Andrew Blake, Natalie Lauritsen, John Fosu-Nyarko, Roger Jones, Lisa Smith, Mike Jones, Geoff Dwyer, Bill Bowden, Michael O'Connell, Chris Gazey, David Gartner, Amanda Miller, Richard W. Bell, K. Frost, Mike Wong, Ross Brennan, N. J. Blake, G. Mconnell, D. Patabendige, N. Venn, Derk Bakker, Greg Hamilton, Dave Houlbrooke, Cliff Spann, Paul Blackwell, Bindi Webb, G. Lyle, K. Wittwer, Perry Dolling, Senthold Asseng, Ian Fillery, Michael Robertson, Caroline Peek, David Rogers, Peter Portman, Jeff Russell, Greg Shea, Ben Henderson, Ross Kingwell, Tresslyn Walmsley, Jean Galloway, Debbie Thackray, Moin Salam, Art Diggle, William J. Macleod, Jenny Hawkes

Crop Updates

This session covers forty one papers from different authors:

INTRODUCTION

1. Future Farming Systems session for Crop Updates 2002 Peter Metcalf, FARMING SYSTEMS SUBPROGRAM MANAGER GRAINS PROGRAM Department of Agriculture

2. Perennial pastures in annual cropping systems: Lucerne and beyond, the ‘Big Picture’, Mike Ewing, Deputy CEO CRC for Plant-based Management of Dryland Salinity, Department of Agriculture

3. Perennial pastures in annual cropping systems: lucerne and beyond, Roy Latta and Keith Devenish, Department of Agriculture

4. Establishing Lucerne with a cover crop, Diana Fedorenko1, Clayton Butterly1, Chantelle Butterly1, Kim and Neil Diamond2 …


Functional Characterization And Localization Of The Aspergillus Nidulan Formin Sepa, Kathryn E. Sharpless, Steven D. Harris Feb 2002

Functional Characterization And Localization Of The Aspergillus Nidulan Formin Sepa, Kathryn E. Sharpless, Steven D. Harris

Department of Plant Pathology: Faculty Publications

Formins are a family of multidomain scaffold proteins involved in actin-dependent morphogenetic events. In Aspergillus nidulans, the formin SEPA participates in two actin-mediated processes, septum formation and polarized growth. In this study, we use a new null mutant to demonstrate that SEPA is required for the formation of actin rings at septation sites. In addition, we find that a functional SEPA::GFP fusion protein localizes simultaneously to septation sites and hyphal tips, and that SEPA colocalizes with actin at each site. Using live imaging, we show that SEPA localization at septation sites and hyphal tips is dynamic. Notably, at septation …


Materials And Methods Useful To Affect Growth And Development Of Lepidoptera Larvae, Douglas Lee Dahlman, Bruce Allen Webb, Indu B. Maiti Jan 2002

Materials And Methods Useful To Affect Growth And Development Of Lepidoptera Larvae, Douglas Lee Dahlman, Bruce Allen Webb, Indu B. Maiti

Kentucky Tobacco Research and Development Center Faculty Patents

The present invention provides materials and methods related to causing insect resistance in plants. Specifically, the present invention provides nucleic acid compounds which encode a teratocyte secreted protein (TSP) which is capable of causing inhibition of growth and developmental arrest in Lepidoptera larvae. Cells and plants (including plant parts, seeds, embryos, etc.) comprising the nucleic acid compounds are also within the scope of the present invention. The present invention also provides amino acid compounds encoded by the nucleic acid compounds of the present invention, as well as methods to induce larval developmental arrest, methods to produce the nucleic acid and …


Organic Wheat : A Production Guide, Steven Mccoy Jan 2002

Organic Wheat : A Production Guide, Steven Mccoy

Bulletins 4000 -

Many people believe that organic agriculture systems can only work in high rainfall regions. However, some of Australia’s most successful organic farmers are the experienced organic wheatbelt growers who produce cereal, pulse and oilseed crops in different regions and soil types across the country.

Wheat is the major organic cereal crop grown in Australia - predominantly noodle and breadmaking wheats for export markets.

Farming systems developed by modern organic wheat growers can differ significantly in concept, strategies and techniques from those used by conventional growers. Successful conversion to organic requires careful planning and integration of the whole farming system over …


Endophyte Ergot Alkaloid Synthetic Compounds, Compounds Which Encode Therefor And Related Methods, Christopher L. Schardl, Jinhung Wang Jan 2002

Endophyte Ergot Alkaloid Synthetic Compounds, Compounds Which Encode Therefor And Related Methods, Christopher L. Schardl, Jinhung Wang

Plant Pathology Faculty Patents

The present invention provides, inter alia, dmaW nucleic acid sequences and the proteins for which they encode. Also provided are methods for the utilization of knockout mutants of the sequences which are useful for engineering ergot alkaloid-deficient fungal symbionts (endophytes) of plants. Other methods and materials related to these sequences are also provided.


Spatial And Temporal Patterns Of Eastern White Pine Regeneration In The Northwestern Ohio Oak Stand, Scott R. Abella, Neil W. Macdonald Jan 2002

Spatial And Temporal Patterns Of Eastern White Pine Regeneration In The Northwestern Ohio Oak Stand, Scott R. Abella, Neil W. Macdonald

Public Policy and Leadership Faculty Research

Eastern white pine (Pinus strobus L.) was often associated with oaks (Quercus spp.) on upland sites in presettlement forests of the upper Great Lakes region, but widespread logging and subsequent fires in the late 1800s converted these upland sites to fire-tolerant oak forests. Although white pine regeneration is occurring in these second-growth oak forests, white pine regeneration patterns in oak forests of the Great Lakes region are not well documented. We examined white pine regeneration in the southern Great Lakes region in an oak stand within the Oak Openings region of northwestern Ohio, where white pine plantations established in the …


Environmental Effects On Developing Wheat As Sensed By Near-Infrared Reflectance Of Mature Grains, Stephen R. Delwiche, Robert A. Graybosch, Lenis Alton Nelson, William R. Hruschka Jan 2002

Environmental Effects On Developing Wheat As Sensed By Near-Infrared Reflectance Of Mature Grains, Stephen R. Delwiche, Robert A. Graybosch, Lenis Alton Nelson, William R. Hruschka

Department of Agronomy and Horticulture: Faculty Publications

For 30 years, near-infrared (NIR) spectroscopy has routinely been applied to the cereal grains for the purpose of rapidly measuring concentrations of constituents such as protein and moisture. The research described herein examined the ability of NIR reflectance spectroscopy on harvested wheat to determine weather-related, quality-determining properties that occurred during plant development. Twenty commercial cultivars or advanced breeding lines of hard red winter and hard white wheat (Triticum aestivum L.) were grown in 10 geographical locations under prevailing natural conditions of the U.S. Great Plains. Diffuse reflectance spectra (1,100-2,498 nm) of ground wheat from these samples were modeled by …


Fertigation Of Vegetables In Western Australia, J Burt Jan 2002

Fertigation Of Vegetables In Western Australia, J Burt

Bulletins 4000 -

Fertigation is the technique of using soluble fertilisers to supply essential nutrients to vegetables through sprinkler or trickle irrigation systems, or by means of a boom spray. It is ideally suited to most horticultural areas in Western Australia, especially the sandy soils of the Swan Coastal Plain that have a poor capacity to retain nutrients.

Before and after planting, nutrients are often applied to vegetables on soils of the Swan Coastal Plain by applications of poultry manure* or solid fertilisers. After planting, fertigation is a safe and effective method of applying top-dressings of nutrients to crops, especially after the rows …


Stomatal Responses Of Douglas-Fir Seedlings To Elevated Carbon Dioxide And Temperature During The Third And Fourth Years Of Exposure, James D. Lewis, Melissa S. Lucash, David M. Olszyk, David T. Tingey Jan 2002

Stomatal Responses Of Douglas-Fir Seedlings To Elevated Carbon Dioxide And Temperature During The Third And Fourth Years Of Exposure, James D. Lewis, Melissa S. Lucash, David M. Olszyk, David T. Tingey

Environmental Science and Management Faculty Publications and Presentations

Two major components of climate change, increasing atmospheric [CO2] and increasing temperature, may substantially alter the effects of water availability to plants through effects on the rate of water loss from leaves. We examined the interactive effects of elevated [CO2] and temperature on seasonal patterns of stomatal conductance (gs), transpiration (E) and instantaneous transpiration efficiency (ITE) in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings. Seedlings were grown in sunlit chambers at either ambient CO2 (AC) or ambient + 180 µmol mol-1 CO2 (EC), and at ambient temperature (AT) or ambient + 3.5° …


Reductions In Grassland Species Evenness Increase Dicot Seedling Invasion And Spittle Bug Infestation, Brian J. Wilsey, H. Wayne Polley Jan 2002

Reductions In Grassland Species Evenness Increase Dicot Seedling Invasion And Spittle Bug Infestation, Brian J. Wilsey, H. Wayne Polley

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

Previous experiments that tested whether diverse plant communities have lower invasibility have all varied species richness. We experimentally varied evenness of four grassland species (three grasses and one forb) by planting a field experiment in Texas, and monitored the number of unplanted dicot and monocot species that invaded plots for two growing seasons. By varying evenness, we eliminated any sampling effect in our diversity treatment, because all plots contained the same plant species. Experimentally reducing evenness led to a greater number of dicot invaders, which emerged in plots throughout the growing season, but had less of an effect on monocot …


Invasion Of Indigenous Vegetation In South-Western Australia By Leptospermum Laevigatum (Gaertn.) F. Muell. (Myrtaceae), Anya Lam Jan 2002

Invasion Of Indigenous Vegetation In South-Western Australia By Leptospermum Laevigatum (Gaertn.) F. Muell. (Myrtaceae), Anya Lam

Theses : Honours

The current paradigm of biodiversity conservation requires the assessment of alien plant invaders, and their potential negative impacts on indigenous species and communities. Leptospermum laevigatum (Gaertn.) F. Muell. (Victorian tea tree/ Coast tea tree) is indigenous to eastern Australia. It has invaded ecosystems within its natural biogeographic range, within new ranges in Australia and overseas. The species is listed as a high priority weed in the Environmental Weed Strategy for Western Australia. However, the basis for its listing has been casual observation rather than focussed research. This study of L. laevigatum is unique in being the first to …