Life Sciences Commons^™

Forage News [2004-10], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• 5^TH Kentucky Grazing Conference Almost Here
• Kentucky Agricultural Cash Receipts
• Stockpiled Tall Fescue Quality
• How Much Is a Big Bale Worth?
• New Clover Shows Excellent Gains
• Forage Production and Forage Mixture Complexity
• Storage Losses and Nutritive Value of Warm-Season Forages Conserved as Baleage
• Utilizing Poultry Litter in a Fertility Program for Orchardgrass Hayfields
• Upcoming Events

Growth Of Stygobitic (Orconectes Australis Packardi) And Epigean (Orconectes Cristavarius) Crayfishes Maintained In Laboratory Conditions, Ann-Simone Cooper, Robin L. Cooper

Biology Faculty Publications

This study reports on maintenance and growth of the cave crayfish, Orconectes australis packardi, and the epigean crayfish, Orconectes cristavarius, with laboratory conditions for 1 and 2 years. The O. a. packardi survived well compared to the O. cristavarius in captivity. The poor survival of the epigean species was probably due to unsuitable conditions. The epigean as well as the cave crayfish molted and grew in captivity, but without any significant difference in molt frequency between species. In the first year, total body length was obtained to assay growth, whereas in the second year the more accurate measure …

Forage News [2004-09], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Forage Spokesman Nominations
• Kentucky Grazing Conference
• Forages at KCA
• Switchgrass and Horses
• Cutting Alfalfa in Autumn Increases Annual Yield, Doesn’t Hurt Stands, but Is Unlikely to Increase Profits
• Nitrogen Rate and Source Effects on the Yield and Nutritive Value of Stockpiled Tall Fescue
• Stewardship for the 21^ST Century: A Report on America’s Forage and Resources and Needs - Executive Summary
• Upcoming Events

Vertical Wall Loads In A Model Grain Bin With Non-Axial Internal Inserts, Marek Molenda, Michael D. Montross, Jozef Horabik, Sidney A. Thompson

Biosystems and Agricultural Engineering Faculty Publications

A study was conducted to estimate the degree of load asymmetry in a bin with non-axial internal inserts. Internal inserts in the form of an annulus segment were attached to the wall, and their influence on vertical wall loads during centric filling and discharge in a model bin were measured. Wall and floor loads were measured in a corrugated-wall model grain bin with a diameter of 2.44 m and a height of 7.3 m filled with soft red winter wheat to a depth of 6.7 m (height-to-diameter ratio of 2.75). Tests were conducted with inserts that extended circumferentially 30°, 60°, …

Seasonal Aeration Rates For The Eastern United States Based On Long-Term Weather Patterns, Michael D. Montross, Samuel G. Mcneill, Thomas C. Bridges

Biosystems and Agricultural Engineering Faculty Publications

Most aeration fans are sized to produce a minimum airflow rate of 0.1 m³/min/t (0.1 cfm/bu) in on-farm grain storage structures. At this airflow rate a significant amount of time is required to move a cooling front completely through a bin. The desired grain temperature and prevailing weather conditions will have a significant effect on required fan size. Thirty years of weather data were analyzed for the eastern United States to determine the amount of time available in temperature windows between 0 to 15.C and 0 to 17.C. Contour maps were generated with ArcMap 8.3 for the percentage …

From Biomedicine To Natural History Research: Est Resources For Ambystomatid Aalamanders, Srikrishna Putta, Jeramiah J. Smith, John A. Walker, Mathieu Rondet, David W. Weisrock, James Monaghan, Amy K. Samuels, D. Kevin Kump, David C. King, Nicholas J. Maness, Bianca Habermann, Elly Tanaka, Susan V. Bryant, David M. Gardiner, David M. Parichy, S. Randal Voss

Biology Faculty Publications

BACKGROUND: Establishing genomic resources for closely related species will provide comparative insights that are crucial for understanding diversity and variability at multiple levels of biological organization. We developed ESTs for Mexican axolotl (Ambystoma mexicanum) and Eastern tiger salamander (A. tigrinum tigrinum), species with deep and diverse research histories.

RESULTS: Approximately 40,000 quality cDNA sequences were isolated for these species from various tissues, including regenerating limb and tail. These sequences and an existing set of 16,030 cDNA sequences for A. mexicanum were processed to yield 35,413 and 20,599 high quality ESTs for A. mexicanum and A. t. tigrinum, respectively. Because the …

Forage News [2004-08], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Warren Thompson Receives International Recognition
• Forage Website
• 5^TH Kentucky Grazing Conference
• Forage Spokesman Needed
• Advances in Forage-Beef Programs Resulting from Agriculture Development Funds
• Alfalfa Acreage Up Other Hay Down
• Transition from Toxic Tall Fescue to Non-Toxic Novel Endophyte Tall Fescue
• Effect of Alfalfa Seeding Rate on Stand Longevity
• Forage Yield and Quality of Winter Hardy Cereals and Winter Sensitive Species for Grazing
• Forage Production and Forage Mixture Complexity
• Upcoming Events

Forage News [2004-07], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Warren Thompson Retires From ABI
• Seeded Bermudagrass: Filling in the Summer Slump
• Bill Talley Receives AFGC Merit Award
• Kentucky Students Win First AFGC Forage Bowl
• KFGC Field Day
• Yield and Persistence of Bolting-Resistant Cultivars of Chicory in Forage Plots
• Management of Beef Cattle to Alleviate Fescue Toxicosis
• Comparison of Three Tall Fescues Containing Novel Endophytes for Stocker Cattle Weight Gain
• Persistence of HiMag Tall Fescue Inoculated with Nontoxic Endophytes
• Upcoming Events

Suitability Of A Gps Collar For Grazing Studies, Carmen T. Agouridis, Timothy S. Stombaugh, Stephen R. Workman, Benjamin K. Koostra, Dwayne R. Edwards, Eric S. Vanzant

Biosystems and Agricultural Engineering Faculty Publications

The traditional means of tracking animal location in a field is by visual observation. Not only is this method labor intensive, it is also prone to error as the observer can alter cattle movement, observation periods are often too short to obtain confidence in general daily behavior patterns, and observer fatigue becomes an issue. In the 1990s, the University of Kentucky began using GPS collars on cattle to track their position with the goal of incorporating this information into cattle management practices. One of the key unanswered questions regarding the GPS collars is the accuracy of the position data recorded …

Effect Of Moisture Content And Broken Kernels On The Bulk Density And Packing Of Corn, Samuel G. Mcneill, Sidney A. Thompson, Michael D. Montross

Biosystems and Agricultural Engineering Faculty Publications

Shelled yellow dent corn samples were conditioned to three moisture content levels (12%, 15%, and 18% w.b.) and mixed with a prescribed amount of broken corn particles of known size (geometric mean diameter of 1.0, 1.4, 2.0, 2.8, and 4.0 mm) and concentration (2.5%, 5.0%, and 7.5% by weight) levels. The initial bulk density and grain compaction under simulated overburden pressure tests were determined for each sample. Uniaxial compression tests were performed for seven vertical pressure levels (3.4, 6.9, 14, 28, 55, 110, and 165 kPa) with a minimum of three replications each. Tests were performed at two locations with …

Compositions And Methods For Enhancing Fiber Digestion, Juan Tricárico, Karl A. Dawson

Animal and Food Sciences Faculty Patents

Methods and enzyme supplements for enhancing fiber digestion in mammals and birds are described. The supplement comprises an effective amount of acetyl esterase, formulated for feeding to animals consuming significant percentages of forages in the diet. The compositions of this invention improve dry matter and neutral detergent fiber disappearance rates, and are useful dietary supplements for improving fiber digestion. The compositions of this invention may be utilized alone or in combination with known exogenous fibrolytic enzyme supplement to improve fiber digestion in mammals and birds. The acetyl esterase advantageously used in the compositions and methods of the present invention is …

Forage News [2004-06], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• KFGC Field Day
• AFGC to Meet In Roanoke, Virginia June 12-16
• Forage Species and Spatial Effects on the Dietary Intake of Goats
• Kentucky Ranks High in Beef
• Forage-Animal Production Research Unit: Most Recent Agriculture Research Service Location
• Calibrating Seeders
• Upcoming Events

Inhibitor Of Plant Peptide Deformylase For Use As Broad-Spectrum Herbicides And Method For Identifying The Same, Robert L. Houtz, Lynnette M. A. Dirk, Mark Allan Williams

Horticulture Faculty Patents

The invention relates to a method of identifying herbicides and to the use of inhibitors of plant peptide deformylase as broad spectrum herbicides.

Plant Trichome Gland Specific Promoter Sequence, George J. Wagner, Sushen Gan, Erming Wang, Rui Wang

Kentucky Tobacco Research and Development Center Faculty Patents

The present invention relates to a trichome specific regulatory sequence.

Forage News [2004-05], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• KFGC Field Day
• American Forage & Grassland Council to Meet in Virginia
• Red Meat Production in 2003
• Alfalfa
• Baling Forage Crops for Silage
• Upcoming Events

The Influence Of Environmental Temperature And Substrate Initial Moisture Content On Aspergillus Niger Growth And Phytase Production In Solid−State Cultivation, Seaborn B. Carter, Sue E. Nokes, Czarena L. Crofcheck

Biosystems and Agricultural Engineering Faculty Publications

Aspergillus niger is being used commercially for phytase production utilizing solid-state cultivation; however, no studies have been published that investigated the optimal environmental temperature and initial substrate water content to maximize fungal growth and/or phytase production. Solid-state cultivations of Aspergillus niger on wheat bran and soybean meal were conducted at three temperatures (25°C, 30°C, and 35°C) and three initial moisture contents (50%, 55%, and 60% wet basis) in a split-plot full-factorial experimental design. Fermentations were conducted for 0, 24, 48, 72, and 120 h. The containers were sampled destructively and assayed for phytase activity and glucosamine concentration as an estimate …

Forage News [2004-04], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Spring Grazing School – Final Call
• Forage Extension Website
• Dr. Mike Collins Accepts Position at Mississippi State University
• Mr. Allen Johnson Accepts Position with Montgomery County Regional Marketing Association
• Hay Contest Winners
• Rotational Grazing’s Efficient
• Emergence and Survival of Legumes Seeded into Pastures
• Does Fertilizer Harm Soil Microbes?
• Kentucky Farm Numbers
• Upcoming Events

Forage News [2004-03], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• UK Forage Extension Website
• Alfalfa Award Winners
• Heart of America Grazing Conference
• Native Grasses
• Broomsedge in Pastures
• How Can Quality Analyses Be Different Between Labs?
• Extending the Grazing Season with Corn
• AFGC in Virginia
• Upcoming Events

Photos Of The 24th Kentucky Alfalfa Conference Award Winners, Kentucky Alfalfa Conference

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.

Moisture--Temperature Management During Alfalfa Hay And Silage Making & Storing, Michael Collins

Kentucky Alfalfa and Stored Forage Conference

In some areas of the country, producers store a substantial portion of their forage for winter feeding as silage or haylage. However, hay remains the most popular storage method for forage. Hay stores well for long periods and is better suited to cash sale and transportation than silage. Mechanical conditioning, which gained acceptance during the 1950's is probably still the greatest single change in hay harvesting and storage technology during this century. However, a number of other noteworthy changes and innovations have occurred in recent years which have helped to reduce the extent of losses during hay harvesting and storage.

Marketing Kentucky Alfalfa, Nicky Baker

Kentucky Alfalfa and Stored Forage Conference

The main key to marketing hay over the years is flexibility. Don’t gear up too heavy for the one specific market. Keep your options open and remember there aren’t any government payments.

Marketing Kentucky Alfalfa, Tom Keene

Kentucky Alfalfa and Stored Forage Conference

In order to market Kentucky produced alfalfa, we need to go back and look at our operation to see if we can produce high quality alfalfa. We can start doing this by determining what the best land use is given the particular soils and typography that makes up your farm layout. There are other things we need to be aware of after we determine our ability to grow alfalfa; is the terrain suitable for harvesting alfalfa using different types of harvesting equipment? Also do we have the equipment necessary to produce alfalfa, either as a grazing tool, grass hay or …

Balancing Agronomics And Economics Of Alfalfa Hay Production, Brian Lacefield, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Alfalfa has high-yielding, high-quality, persistent, and profitable potential if given adequate management and a balance of several agronomic and economic considerations. How can we account for the differences among producers who have the average alfalfa yields of 3.0 tons/A with the top hay producers who average approximately 5.0 tons/acre and the producer who has achieved the record yield of 10.13 tons/acre? Is the answer “luck”, better soils, moisture and growing conditions? The answer may certainly be yes, but. Yes, the factors above are important and can explain some differences; however, we believe the overall difference is the management of research-based …

Hybrid Alfalfa: Reality Or Pipe Dream? Dairyland Seed Company, Michael Velde

Kentucky Alfalfa and Stored Forage Conference

Progress in increasing alfalfa forage yield has been minimal over the past 20 years. This is due primarily to lack of pollen control in open pollinated synthetic varieties. All alfalfa varieties to date have been open pollinated synthetic varieties. New alfalfa hybridization technology provides the tools to overcome the forage yield barriers that have been hindering alfalfa breeders from making progress

Roundup Ready Alfalfa Update, Daniel O. Foor

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.

Establishing Alfalfa Using No-Till Techniques, Gary Bates

Kentucky Alfalfa and Stored Forage Conference

There have been many changes in agriculture over the last 50 years. One of the greatest has been the use of no-till planting methods. The development of drill and herbicides has made no-till seedings as successful as seeding into prepared land.

Measuring Hay Temperatures, Doug Overhults

Kentucky Alfalfa and Stored Forage Conference

It is well known that baling hay at the right moisture content is the key to preventing excessive heating in the bale. It can be quite a challenge, though, to get all of the hay baled without some of it being a bit wetter than is desirable. That’s when trouble can begin, and we have to be concerned about heating that could damage the hay or even lead to spontaneous combustion. Fortunately, the heating process does take some time to develop and we do know what temperatures signal that a critical situation may be developing. So, monitoring bale or stack …

Fertilizing Alfalfa For Profit, Monroe Rasnake

Kentucky Alfalfa and Stored Forage Conference

Alfalfa has a high yield potential in relation to most other forages. However, this potential can only be realized on a long-term basis if the nutrient needs of the plant are adequately provided for. In addition, the ability of alfalfa plants to survive the heat and drought of summer and the cold of winter depends on an abundant supply of plant nutrients.

Grazing Alfalfa, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Over the past decade we have had several people address “Alfalfa as a Grazing Crop” including Warren Thompson, Gary Bates, Ken Johnson, Jason Sandefur, Byron Sleugh, and myself. Each has done an excellent job discussing the merits of this remarkable crop and the opportunities it offers for grazing. At the end of the Conference last year, I (as I always do) asked for your suggestions concerning topics for this years’ conference. As it has been for the past decade, “Grazing” was the most requested topic. In today’s presentation, let’s go back and revisit the question, “Is Grazing Alfalfa Right for …

Foreword And Recipients Of Kentucky Alfalfa Awards [2004], Garry D. Lacefield, Christi L. Forsythe

Kentucky Alfalfa and Stored Forage Conference

No abstract provided.