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Articles 8791 - 8820 of 11021
Full-Text Articles in Life Sciences
New Alfalfa Varieties, S. Ray Smith
New Alfalfa Varieties, S. Ray Smith
Kentucky Alfalfa and Stored Forage Conference
Commercial alfalfa breeding companies have continued to make great strides in the development of new varieties with unique traits. New traits include Roundup Ready®, potato leafhopper resistance, hybrids, lodging resistance, rapid regrowth, higher quality, resistance to new diseases, and more… I will address some of these new developments in the following pages. In addition, producers often ask the question: “Are improved varieties really worth the higher seed cost?” Dr. Jimmy Henning recently summarized 24 location years of Kentucky alfalfa yield data and found that the best 5 varieties in each test yielded 0.9 tons/A higher than the checks. Over a …
Foreword And Recipients Of Kentucky Alfalfa Awards [2006], Garry D. Lacefield, Christi L. Forsythe
Foreword And Recipients Of Kentucky Alfalfa Awards [2006], Garry D. Lacefield, Christi L. Forsythe
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Crop Updates 2006 - Oilseeds, Graham Walton, Fiona Martin, Anne Wilkins, Nathan Hancock, Matthew Nelson, Marieclaire Castello, Linda Thompson, Anouska Cousin, Guijun Yan, Wallace Cowling, Moin Salam, Bill Mcloud, Ravjit Khangura, Jean Galloway, Art Diggle, R. F. Brennan, M. D. A. Bolland, P. M. Damon, Z. Rengel, Terry Rose, Qifu Ma, Dave Eksteen
Crop Updates 2006 - Oilseeds, Graham Walton, Fiona Martin, Anne Wilkins, Nathan Hancock, Matthew Nelson, Marieclaire Castello, Linda Thompson, Anouska Cousin, Guijun Yan, Wallace Cowling, Moin Salam, Bill Mcloud, Ravjit Khangura, Jean Galloway, Art Diggle, R. F. Brennan, M. D. A. Bolland, P. M. Damon, Z. Rengel, Terry Rose, Qifu Ma, Dave Eksteen
Crop Updates
This session covers thirteen papers from different authors:
1. INTRODUCTION, Graham Walton, CONVENOR, Department of Agriculture
2. The performance of new TT canola varieties in National Variety Testing (NVT) WA, Fiona Martin, Research Agronomist, Agritech Crop Research
3. Comparison of TT Canola Varieties in Oilseeds WA Trials – 2005, Collated by G.H. Walton, Department of Agriculture, WA, from a collaboration between Oilseeds WA, Seed Companies, Agronomists and Growers
4. An overview of the potential for a Biofuels Industry in Western Australia, Anne Wilkins and Nathan Hancock, Department of Agriculture
5. Retrieval of fertile progeny from interspecific …
Crop Updates 2006 - Farming Systems, Wayne Pluske, Bill Bowden, Craig Scanan, Stephen Davies, Chris Gazey, Peter Tozer, Derk Bakker, Louise Barton, David Gatter, Renee Buck, Daniel Murphy, Christoph Hinz, Bill Porter, Meredith Fairbanks, Nicolyn Short, Ian Foster, James Fisher, Doug Abrecht, Mario D'Antuono, Tracey M. Gianatti, Paul Carmody, Frank D'Amden, Rick Llewellyn, Michael Burton, Caroline Peek, Nadine Eva, Chris Carter, Megan Abrahams, Andrew Blake, Paul Blackwell, Sylvian Pottier, Michael Robertson, Greg Lyle, Lisa Brennan, Tony J. Vyn, Simon Teakle, Peter Norris, Jeff Russell, James Fisher, Roy Murray-Prior, Deb Pritchard, Mike Collins, Greg Hamilton, Rob Hetherington, Andrew Van Burgel, Cliff Spann
Crop Updates 2006 - Farming Systems, Wayne Pluske, Bill Bowden, Craig Scanan, Stephen Davies, Chris Gazey, Peter Tozer, Derk Bakker, Louise Barton, David Gatter, Renee Buck, Daniel Murphy, Christoph Hinz, Bill Porter, Meredith Fairbanks, Nicolyn Short, Ian Foster, James Fisher, Doug Abrecht, Mario D'Antuono, Tracey M. Gianatti, Paul Carmody, Frank D'Amden, Rick Llewellyn, Michael Burton, Caroline Peek, Nadine Eva, Chris Carter, Megan Abrahams, Andrew Blake, Paul Blackwell, Sylvian Pottier, Michael Robertson, Greg Lyle, Lisa Brennan, Tony J. Vyn, Simon Teakle, Peter Norris, Jeff Russell, James Fisher, Roy Murray-Prior, Deb Pritchard, Mike Collins, Greg Hamilton, Rob Hetherington, Andrew Van Burgel, Cliff Spann
Crop Updates
This session covers nineteen papers from different authors:
SOIL AND NUTRIENT MANAGEMENT
1. Inve$tigating fertili$er inve$tment, Wayne Pluske, Nutrient Management Systems
2. KASM, the potassium in Agricultural System Model,Bill Bowden and Craig Scanlan, DAWA Northam and UWA, School of Earth and Geographical Sciences
3. Long term productivity and economic benefits of subsurface acidity management from surface and subsurface liming, Stephen Davies, Chris Gazey and Peter Tozer, Department of Agriculture
4. Furrow and ridges to prevent waterlogging, Dr Derk Bakker, Department of Agriculture
5. Nitrous oxide emissions from a cropped soil in Western Australia, Louise Barton1 …
Corn And Other Annuals, Jeff Mccutcheon
Corn And Other Annuals, Jeff Mccutcheon
Kentucky Grazing Conference
There are many factors to consider when planting alternative crops. One of the most important factors is deciding if you need additional forage. In our area the basis of any grazing system should be perennial cool-season grasses and legumes. Have you done all that you can to improve that forage production through managed grazing and fertility management? If you have, then you may be ready to consider annual forages in your grazing system.
Perennial Warm Season Grasses In Grazing Programs, Mark Kennedy
Perennial Warm Season Grasses In Grazing Programs, Mark Kennedy
Kentucky Grazing Conference
Many warm season perennial grasses were once an important part of the plant community in much of the Midwest. Conversion to cropping systems, overgrazing, lack of regular fire and increased competition from cool-season grasses and legumes have caused many of these grasses to disappear from much of the region. However, warm season grasses can compliment cool-season pastures if managed properly. Midwest stockmen are rediscovering the usefulness of warm season grasses in their overall forage program. Adding these grasses to forage systems has resulted in increased gains and improved livestock performance during the summer months when cool-season grasses are at their …
Non-Traditional Forages For Grazing: Turnips And Other Brassicas, Dave Robison
Non-Traditional Forages For Grazing: Turnips And Other Brassicas, Dave Robison
Kentucky Grazing Conference
Over the past few years there have been a number of production livestock producers that have realized the benefits of grazing turnips and other brassicas. Turnips and other brassicas have traditionally been utilized for late season grazing to help extend the grazing season. But other ways are being found to utilize these highly productive, high quality forage crops. My purpose in this presentation is to introduce the different types of turnips and brassicas and explain how they can be utilized for various systems and different uses.
How I Use My Pastures, Doug Gehner, Russell C. Hackley, Gil Myers
How I Use My Pastures, Doug Gehner, Russell C. Hackley, Gil Myers
Kentucky Grazing Conference
No abstract provided.
Mineral Supplements And Feed Additives--Can They Eliminate Fescue Toxicity?, John Thomas Johns
Mineral Supplements And Feed Additives--Can They Eliminate Fescue Toxicity?, John Thomas Johns
Kentucky Grazing Conference
Fescue is the predominate cool season grass in much of the United States due to its wide adaptation and hardiness. Many of these acres however, contain an endophytic fungus resulting in production of toxins with negative effects on grazing cattle. The two primary responses in beef cattle are an increase in core body temperature and a decrease in dry matter intake. As a result, decreases in reproductive rates, milk production, weaning weights and ADG are seen (Tables 1 and 2). Many approaches to pasture management have been advocated to overcome or minimize the problem such as incorporation of legumes, rotational …
Developing Fencing For Grazing Systems, Ken Johnson
Developing Fencing For Grazing Systems, Ken Johnson
Kentucky Grazing Conference
Expectation is founded on faith, and in faith lays opportunities. I suppose as we look at most farming operations most changes occur from force not by choice. What I propose today and hope to convince most of you; is that here is an opportunity to make more profit, if you’re willing to change and have faith that it will work.
Developing Watering Systems For Efficient Grazing, Kevin Laurent
Developing Watering Systems For Efficient Grazing, Kevin Laurent
Kentucky Grazing Conference
Whether you call it rotational grazing, intensive grazing or management intensive grazing, the economic benefits of controlling how and where your cattle graze are well documented. Increased forage utilization, greater stocking rates, greater legume persistence, reduced hay feeding and more uniform nutrient recycling are just some of the many benefits producers can take advantage of when practicing some form of controlled grazing. However, one of the greatest challenges to implementing a controlled grazing system is the delivery of stock water to the grazing animal.
Tall Fescue From 1931-2006, Garry D. Lacefield
Tall Fescue From 1931-2006, Garry D. Lacefield
Kentucky Grazing Conference
Tall fescue is the most important coolseason grass grown in the “Heart of America”. It is a versatile plant used for animal feed, lawns and turf, and conservation purposes.
Grazing Programs: Environmentally Friendly, Economically Sound And Agronomically Feasible, Sid Brantly
Grazing Programs: Environmentally Friendly, Economically Sound And Agronomically Feasible, Sid Brantly
Kentucky Grazing Conference
The environmental soundness of our farms is the greatest, long term asset that farmers have. The topsoil, the trees, the cattle, the grass and crops on your farm are like unto a great financial account...and you are the banker. You make the decisions to: A) Use it all up now, B) Lock it away for someone in the future to make the decisions, or C) Utilize wisely in such a way that it is managed for financial success today, and still builds momentum for your future as well as your descendents.
Animal Behavior: Impacts On Grazing, Mark Kennedy
Animal Behavior: Impacts On Grazing, Mark Kennedy
Kentucky Grazing Conference
I am not an expert on this subject and give all credit for my limited understanding of this subject to Dr. Fred Provenza, Utah State University; Katy Voth, Livestock for Landscapes, LLC; Jim Gerrish and others. I have tried to put into practice, both personally and with other producers, many of these principles to aid in improved grazing management. This presentation will address only 2 aspects of animal behavior; 1) How animal behavior impacts grazing distribution and forage utilization over the landscape, and 2) How animal behavior affects diet selection.
Growing Forage Crops For Wildlife, Don Ball
Growing Forage Crops For Wildlife, Don Ball
Kentucky Grazing Conference
Numerous forage crops adapted in the Southeast offer benefits in production of various domestic animals including beef and dairy cattle, horses, and sheep (Ball, et al., 2002). Many of the same attributes these plants offer when grown in connection with livestock enterprises are also valuable in wildlife settings. Furthermore, the attitudes of many wildlife managers are changing, and their desire for knowledge of forage crops is on the rise. Consequently, forage crops are becoming more important and more greatly appreciated by wildlife enthusiasts within our region.
Maximizing Production Of Beef Cattle On Pastures, Justin Sexten
Maximizing Production Of Beef Cattle On Pastures, Justin Sexten
Kentucky Grazing Conference
Standardized performance analysis (SPA) of beef cattle operations continues to demonstrate the importance of reducing feed related costs. As producers look for alternative methods to reduce feed costs the benefits of improved forage management become increasingly important due to the opportunity to reduce feed costs while improving animal performance. One note of caution related to maximizing beef production from pasture, maximizing anything must be done carefully, the difference between maximum success and a total disaster is a fine line.
Grazing Program For Goats, Greg Brann
Grazing Program For Goats, Greg Brann
Kentucky Grazing Conference
Goats are often referred to as four legged bush hogs and actually they perform best when consuming browse. Goats eat from the top down so fields have a mown appearance even when forage is three feet tall. The typical browse height for goats is up to four foot however, they will rise up on their hind legs and sometimes prop on others backs to reach higher. Goats have an affinity for high quality forage. Much of the vegetation we have considered weeds as beef producers is excellent forage for goats. Goats select the high quality leaves and tender growing tips …
From Traditional Confinement Dairying To Grazing Replacement Heifers, Bill Payne
From Traditional Confinement Dairying To Grazing Replacement Heifers, Bill Payne
Kentucky Grazing Conference
I would like to share an account of a transition from a conventional dairy operation to our current Management Intensive Grazing (MIG) enterprise. In 1974, I joined my father who at that time had been dairying on a 265 acre farm in Lincoln County, Kentucky for twenty five years. We fed our registered Holsteins corn silage and alfalfa haylage and purchased a manufactured feed. Our herd of 70 Holsteins spent most of their time on concrete. We did make an effort to allow access to an exercise lot when weather permitted. However, during the greater part of the 1990’s we …
Pastures For Horses: Challenges And Opportunities, Robert Coleman
Pastures For Horses: Challenges And Opportunities, Robert Coleman
Kentucky Grazing Conference
Horses were born to eat grass and how they evolved has allowed them to be efficient users of a high forage diet. In fact, for many of today’s horses, they will survive and thrive on an all forage diet.
Can We Graze Year-Around In The Heart Of America, Edward N. Ballard
Can We Graze Year-Around In The Heart Of America, Edward N. Ballard
Kentucky Grazing Conference
Feed costs represent the major cost in most livestock production systems. A recently completed analysis of 225 Standardized Performance Analysis (SPA) Beef Cow Records on herds in Illinois and Iowa showed that feed cost was the overriding factor determining profitability, explaining over 57 percent of the herd-to-herd variation. Typically the cost of supplying nutrients to ruminant livestock is much greater using harvested feedstuffs as opposed to grazing pastures or crop residues. The primary function of a grassland farm is to convert solar energy to marketable livestock products in the most efficient manner. The fewer steps between the animal product and …
Foreword And Conference Information [2006], Garry D. Lacefield, Christi L. Forsythe
Foreword And Conference Information [2006], Garry D. Lacefield, Christi L. Forsythe
Kentucky Grazing Conference
No abstract provided.
Channel-Reach Morphology Dependence On Energy, Scale, And Hydroclimatic Processes With Implications For Prediction Using Geospatial Data, Alejandro N. Flores, Brian P. Bledsoe, Christopher O. Cuhaciyan, Ellen E. Wohl
Channel-Reach Morphology Dependence On Energy, Scale, And Hydroclimatic Processes With Implications For Prediction Using Geospatial Data, Alejandro N. Flores, Brian P. Bledsoe, Christopher O. Cuhaciyan, Ellen E. Wohl
Alejandro N. Flores
Channel types found in mountain drainages occupy characteristic but intergrading ranges of bed slope that reflect a dynamic balance between erosive energy and channel boundary resistance. Using a classification and regression tree (CART) modeling approach, we demonstrate that drainage area scaling of channel slopes provides better discrimination of these forms than slope alone among supply- and capacity-limited sites. Analysis of 270 stream reaches in the western United States exhibiting four common mountain channel types reveals that these types exist within relatively discrete ranges of an index of specific stream power. We also demonstrate associations among regional interannual precipitation variability, discharge …
Evaluation Of The Sustainable Grazing On Saline Lands - Wa Producer Network : Influence On Practice Change And Decision-Making Capacity, Rebecca Heath, Jamie Bowyer, T M. Lacey
Evaluation Of The Sustainable Grazing On Saline Lands - Wa Producer Network : Influence On Practice Change And Decision-Making Capacity, Rebecca Heath, Jamie Bowyer, T M. Lacey
Resource management technical reports
No abstract provided.
Ravensthorpe Area Catchment Appraisal 2006, A Massenbauer
Ravensthorpe Area Catchment Appraisal 2006, A Massenbauer
Resource management technical reports
The Ravensthorpe area covers 861, 000 hectares. Ninety percent of the study area covered in this report falls within the Ravensthorpe Shire, Western Australia. This document aims to give the reader a starting point from which to further assess larger scale areas of the catchment for the purpose of planning to reverse and improve land degradation and sustainable farming in Western Australia.
Sorption-Desorption Of Imidacloprid And Its Metabolites In Soil And Vadose Zone Materials, Sharon V. Papiernik, William C. Koskinen, Lucia Cox, Pamela J. Rice, Sharon A. Clay, Nancy R. Werdin-Pfisterer, Kristen A. Norberg
Sorption-Desorption Of Imidacloprid And Its Metabolites In Soil And Vadose Zone Materials, Sharon V. Papiernik, William C. Koskinen, Lucia Cox, Pamela J. Rice, Sharon A. Clay, Nancy R. Werdin-Pfisterer, Kristen A. Norberg
Agronomy, Horticulture and Plant Science Faculty Publications
Sorption-desorption is one of the most important processes affecting the leaching of pesticides through soil because it controls the amount of pesticide available for transport. Subsurface soil properties can significantly affect pesticide transport and the potential for groundwater contamination. This research characterized the sorption-desorption of imidacloprid (1-[(6-chloro-3-pyridinyl)-methyl]-Nnitro-2-imidazolidinimine) and three of its metabolites, 1-[(6-chloro-3-pyridinyl)methyl]-2-imidazolidinone (imidacloprid-urea), 1-[(6-chloro-3-pyridinyl)methyl]-4,5-dihydro-1H-imidazol-2-amine (imidaclopridguanidine), and 1-[(6-chloro-3-pyridinyl)methyl]-1H-imidazol-2-amine (imidacloprid-guanidine-olefin), as a function of changing soil properties with depth in two profiles extending from the surface to a depth of 1.8 or 8 m. Sorption of each compound was highly variable and hysteretic in all cases. Normalizing the sorption coefficients (Kf) …
Canopy-Tree Influences Along A Soil Parent Material Gradient In Pinus-Ponderosa-Quercus Gambelii Forests, Northern Arizona, Scott R. Abella, Judith D. Springer
Canopy-Tree Influences Along A Soil Parent Material Gradient In Pinus-Ponderosa-Quercus Gambelii Forests, Northern Arizona, Scott R. Abella, Judith D. Springer
Public Policy and Leadership Faculty Publications
ABELLA, S. R. (Public Lands Institute and School of Life Sciences, University of Nevada, Las Vegas, Las Vegas, NV 89154-2040) AND J. D. SPRINGER (Ecological Restoration Institute, Northern Arizona University, Flagstaff, AZ 86011-5017). Canopy-tree influences along a soil parent material gradient in Pinus ponderosa- Quercus gambelii forests, northern Arizona. J. Torrey Bot. Soc. 135: 26–36. 2008.—The distribution of canopy trees can impose within-site patterns of soil properties and understory plant composition. At ten sites spanning a soil parent material gradient in northern Arizona Pinus ponderosa-Quercus gambelii forests, we compared soils and plant composition among five canopy types: openings, Pinus ponderosa …
Terpenes And Carbohydrate Source Influence Rumen Fermentation, Digestibility, Intake, And Preference In Sheep, J. J. Villalba, F. D. Provenza, K. C. Olson
Terpenes And Carbohydrate Source Influence Rumen Fermentation, Digestibility, Intake, And Preference In Sheep, J. J. Villalba, F. D. Provenza, K. C. Olson
Green Canyon Environmental Research Area, Logan Utah
We hypothesized that toxins and nutrients in foods interact to influence foraging behavior by herbivores. Based on this hypothesis we predicted that 1) terpenes in big sagebrush (Artemisia tridentata) influence intake and preference in sheep for diets varying in sources of nonstructural (barley grain) and structural (sugar beet pulp) carbohydrates, and 2) these effects are due to the differential effects of terpenes on fermentation products and apparent digestibility of each class of carbohydrates. Lambs were fed 2 isoenergetic and isonitrogenous diets with varying proportions of the same ingredients (beet pulp- and barley grain-based diet) or offered a choice between the …
The Abundance Of Different Dragonfly Species At Furman Lake - 2006, Wade Worthen
The Abundance Of Different Dragonfly Species At Furman Lake - 2006, Wade Worthen
Furman Lake Restoration Book Gallery
A line graph showing the abundance of fifteen different species of dragonflies spotted over a five month period at Furman Lake in 2006.
Study Of Metals In Leached Soils Of A Municipal Dumpsite In Tampico, Tamaulipas, Mexico: Preliminary Results, P. F. Rodríguez-Espinosa, D. Chazaro Mendoza, J. A. Montes De Oca, G. Sánchez Torres E., Alejandro Fierro-Cabo
Study Of Metals In Leached Soils Of A Municipal Dumpsite In Tampico, Tamaulipas, Mexico: Preliminary Results, P. F. Rodríguez-Espinosa, D. Chazaro Mendoza, J. A. Montes De Oca, G. Sánchez Torres E., Alejandro Fierro-Cabo
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
The Zapote dumpsite measures 420000 m 2 and is 28 years old; an estimated 2.5 millions tons of waste have accumulated on the site (household waste, clinical waste, commercial waste). The thickness of the waste is 3 to 9 meters. Since operations began, no control regulations have existed on the residues received. The Zapote dumpsite is located within a salt-marsh between a system of channels and river lagoons of brackish water, located in a tropical sedimentary environment in the urban zone of Tampico, Tamaulipas, Mexico. Recently, the Zapote has been closed and work is presently underway in its rehabilitation since …
Phytophthora Diseases Of Cutflower Crops, Department Of Agriculture And Food, Western Australia
Phytophthora Diseases Of Cutflower Crops, Department Of Agriculture And Food, Western Australia
Bulletins 4000 -
Phytophthora root rot is the most common soil borne disease causing plant death in native cut flower production. It is also a pathogen of exotic cutflower crops such as rose, lily, carnation, proteas and gerbera. The fungus, Phytophthora cinnamomi, the cause of jarrah dieback is the pathogen that first comes to mind when Phytophthora is mentioned. This has one of the widest host ranges of all Phytophthora species, particularly amongst native Australia species. P.nicotianae also has a wide host range, infecting a wide range of exotic, as well as Australian native flower crops. There are also a number of …