Life Sciences Commons^™

Gardening In Sandy Soils, Katie Wagner, Michael R. Kuhns, Grant Cardon

All Current Publications

This fact sheet covers the basics of clay, silt and sand soils with an emphasis on gardening in soils with a high sand content. It includes information on the composition of sandy soils, gardening tips for managing sandy soils, and the types of plants that grow best in sandy soils.

Gardening In Clay Soils, Katie Wagner, Michael R. Kuhns, Grant Cardon

All Current Publications

This fact sheet covers the basics of clay, silt and sand soils with an emphasis on gardening in soils with a high clay content. It includes information on the composition of clay soils, gardening tips for managing clay soils, and the types of plants that grow best in clay soils.

Tillage Depth Effects On Soil Physical Properties, Sugarbeet Yield, And Sugarbeet Quality, J. D. Jabro, W. B. Stevens, W. M. Iversen, R. G. Evans

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

Tillage depth influences the soil–water–plant ecosystem, thereby affecting crop yield and quality. The effects of tillage depth on soil physical properties and sugarbeet (Beta vulgaris L.) yield and quality were evaluated. A field study composed of two tillage depths [10 cm, referred to as shallow (ST), and 20 cm, referred to as deep (DT)] was conducted on a Lihen sandy loam soil in spring 2007 at the Agricultural Research Service (ARS) irrigated research farm near Williston, North Dakota. Soil bulk density (ρb), gravimetric water content (θw), and saturated hydraulic conductivity (Ks) were measured three times during the growing season …

Crop Updates 2008 - Farming Systems, John De Majnik, Paul Meibusch, Vince Logan, Louise Barton, Wahid Biswas, Daniel Carter, Nicolyn Short, Jodie Bowling, Glen Riethmuller, James Fisher, Moin Salam, Stephen Davies, Jim Dixon, Dennis Van Gool, Alison Slade, Bob Gilkes, Megan Abrahams, Caroline Peek, Daniel Gardiner, Kari-Lee Falconer, David Hall, Jeromy Lemon, Harvey Jones, Yvette Oliver, Tania Butler, Michael Robertson, Stephen Carr, Chris Gazey, David York, Joel Andrews, Michael Simeoni, G. Peter Mangano, Svetlana Micic, Dave Gartner, Adam Clune, Matthew Morell, Adam Umbers, Angelo Loi, Brad Nutt, Clinton Revell, Geoff Kew, Vivien Vanstone, Ali Bhatti, Ming Pei You, Imma Farre, Bill Bowden, Henry Smolinski, Jane Speijers, John Bruce, David Mccarthy, Gary Lang, David Rees, Rob Grima, John Young, Ross Kingwell, Chris Oldham, Derk Bakker, Ian Foster, David Beard, Wen Chen, Richard Bell, Ross Brennan, Art Diggle, Reg Lunt, Qifu Ma, Zed Rengel, Tim Hilder, Dusty Severtson, Shahajahan Miyan, Sam Clune, Barb Sage, Tenielle Martin, Chris Newman, Neal Dalgliesh, Caroline Peak, Andrew Blake, Megan Ryan, Richard Bennett, Tim Colmer, Daniel Real, Jiyan Pang, Lori Kroiss, Dion Nicol, Tammy Edmonds-Tibbett, Ron Mctaggart, Sean Kelly, Helen Hunter

Crop Updates

This session covers thirty nine papers from different authors:

PLENARY

1. Developments in grain end use, Dr John de Majnik, New Grain Products, GRDC, Mr Paul Meibusch, New Farm Products and Services, GRDC, Mr Vince Logan, New Products Executive Manager, GRDC

PRESENTATIONS

2. Global warming potential of wheat production in Western Australia: A life cycle assessment, Louise Barton1, Wahid Biswas2 and Daniel Carter3, 1School of Earth & Geographical Sciences, The University of Western Australia, 2Centre of Excellence in Cleaner Production, Division of Science and Engineering, Curtin University of Technology, 3Department of Agriculture and …

Airflow Resistance Of Wheat Bedding As Influenced By The Filling Method, J. Łukaszuk, M. Molenda, J. Horabik, B. Szot, Michael D. Montross

Biosystems and Agricultural Engineering Faculty Publications

A study was conducted to estimate the degree of variability of the airflow resistance in wheat caused by the filling method, compaction of the sample, and airflow direction. Two types of grain chambers were used: a cylindrical column 0.95 m high and 0.196 m in diameter, and a cubical box of 0.35 m side. All factors examined were found to influence considerably the airflow resistance. Gravitational axial filling of the grain column from three heights (0.0, 0.95 and 1.8 m) resulted in the pressure drops of 1.0, 1.3, and 1.5 kPa at the airflow velocity of 0.3 m/s. Consolidation of …

Airflow Resistance Of Seeds At Different Bulk Densities Using Ergun's Equation, Marek Molenda, Michael D. Montross, Samuel G. Mcneill, Jozef Horabik

Biosystems and Agricultural Engineering Faculty Publications

Airflow resistance of grains and oilseeds has been extensively studied. Traditionally the data has been presented using Shedd’s curves. However, this assumes that airflow resistance is independent of grain depth. Grain undergoes compaction during storage that changes the bulk density, porosity, and therefore the airflow resistance. Ergun’s equation is a function of particle size and porosity of the granular material. Airflow resistance by Ergun’s equation was used to predict the pressure drop across a column of corn, soft white winter wheat, soft red winter wheat, and soybeans at three moisture content levels and two bulk densities. The maximum root mean …

Aeration Strategies And Fan Cost Comparisons For Wheat In Mid-South Production Regions, Thomas C. Bridges, Michael D. Montross, Samuel G. Mcneill

Biosystems and Agricultural Engineering Faculty Publications

Numerous factors influence the sizing of aeration fans for summer-harvested crops. Thirty years of weather data for Lexington, Kentucky, were analyzed and the cost of aeration was compared for two axial fans (afan1, afan2) and one centrifugal fan (cfan1). Aeration costs were defined as the sum of the following components: the cost of owning the fan, the cost of electricity for operating the fan, a cost for wheat shrinkage during aeration, and a cost for dry matter loss (DML). The fans were selected to deliver airflow rates of approximately one, two, and three times the recommended aeration rate of 0.11 …

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 Salam, Megan Collins, Art Diggle, Blakely Paynter, Roslyn Jetter, 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 …

G1507 Summer Patch And Necrotic Ring Spot, John E. Watkins

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide describes the causes, predisposing conditions, and symptoms of summer patch and necrotic ring spot, and provides recommendations for their control.

Introduction

Two of the most destructive turfgrass patch diseases are summer patch and necrotic ring spot, both of which are present in Nebraska. The symptoms of necrotic ring spot and summer patch are essentially identical, making it difficult to distinguish the two apart in an affected turf. If the symptoms begin in May, necrotic ring spot is probably the cause; if they begin in July and August, then summer patch is suspect. In Nebraska summer patch is probably …

Validation Of A Finite-Element Stored Grain Ecosystem Model, Michael D. Montross, Dirk E. Maier, Kamyar Haghighi

Biosystems and Agricultural Engineering Faculty Publications

An axisymmetric finite–element model was validated with respect to predicting the heat, mass, and momentum transfer that occurred in upright corrugated–steel storage bins due to conduction, diffusion, and natural convection using realistic boundary conditions. Hourly weather data that included hourly total solar radiation, wind speed, ambient temperature, and relative humidity were used to model the corn temperature and moisture content during storage with no aeration, and with ambient and chilled aeration. Periods of aeration were simulated assuming a uniform airflow rate through the grain mass. Sixteen bins with a capacity of 11.7 t each and instrumented with temperature cables were …

Development Of A Finite-Element Stored Grain Ecosystem Model, Michael D. Montross, Dirk E. Maier, Kamyar Haghighi

Biosystems and Agricultural Engineering Faculty Publications

An axisymmetric finite–element model was developed that predicts the heat, mass, and momentum transfer that occurred in upright corrugated steel storage structures due to conduction, diffusion, and natural convection using realistic boundary conditions. Weather data that included hourly total solar radiation, wind speed, ambient temperature, and relative humidity were used to model the temperature, moisture content, dry matter loss, and maize weevil development during storage with no aeration, and with ambient and chilled aeration. Periods of aeration were simulated assuming a uniform airflow rate through the grain mass. Heat and mass balances were used to calculate the temperature and absolute …

Crop Updates 2002 - Cereals, Peter Burgess, Gary Fawell, Dean 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, …

What Can I Do Now To Care For My Lawn?, Jerry Goodspeed

All Archived Publications

No abstract provided.

Reconditioning Corn And Soybeans To Optimal Processing Moisture Contents, Michael D. Montross, Dirk E. Maier

Biosystems and Agricultural Engineering Faculty Publications

Experimental trials were carried out to evaluate the technical feasibility of reconditioning overly dry corn and soybeans to optimal market and processing moisture contents. Data obtained from experimental trials were used to validate an aeration simulation model. This model was used to evaluate the feasibility of reconditioning soybeans and corn. Reconditioning of grain was feasible at low airflow rates (0.11 m³ min^–1 t^–1) over a six-month period when an automatic aeration controller was used. Using downflow aeration and monthly unloading of the bin allowed for the greatest net economic gain. Predicted reconditioning in Des Moines, Iowa, …

Forage News [2000-09], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• Variety Testing Results are Available
• Fall Grazing School is On for October 16-18 in Princeton
• Grazing Conference Set for November
• Forage Symposium to Kick-Off KCA Meeting
• WKU Professor Wins AFGC Emerging Scientist Contest
• Does Aeration of Pastures and Hayfields Pay?
• Quality Cover Seed: Impact in Tennessee
• Upcoming Events

Forage News [2000-03], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• KFGC President’s Corner
• Kentucky Alfalfa Conference Celebrates 20 Years
• Sign Up Now for the Spring Kentucky Grazing School
• All Forage Variety Reports Are Available
• KFGC Beef and Forage Field Day is June 8 at Eden Shale
• Does Aeration of Pastures and Hayfields Pay?
• College of Agriculture Field Day
• Upcoming Events

Crop Updates 2000 Cereals - Part 4, C. Tang, Z. Rengel, E. Diatloff, B. Mcgann, Mehmet Cakir, Nick Galwey, David Poulsen, M. Carter, A. Briney, R. Wilson, R. H. Potter, M. G. K. Jones, Ian Barclay, Robyn Mclean, Dean Diepeveen, Robert Loughman, Ross Kingwell, Michael O'Connell, Simone Blennerhasset, Benjamin Michael Tiller, Senthold Asseng, Holger Meinke, Bill Bowden, Jeff Russell, Ivan Lee, Clare Johnson, Chris Newman, Robert Emery, Romolo Tassone, Ernestos Kostas, Graeme Ralph, Robert Sudmeyer, David Hall, Harvey Jones

Crop Updates

This session covers twelve papers from different authors:

BREEDING

1.Response to subsoil acidity of wheat genotypes differing in Al-tolerance, C. Tang, Z. Rengel, E. Diatloff and B. McGann, Soil Science and Plant Nutrition/CLIMA, University of Western Australia

2. Application of molecular markers in Barley Improvement, Mehmet Cakir¹, Nick Galwey¹ and David Poulsen^{2, 1}Plant Sciences, Faculty of Agriculture, University of Western Australia, ²Queensland Department of Primary Industries, Hermitage Research Station, Queensland

3. Implementation of molecular markers for wheat improvement in the Western Region, M. Carter¹, A. Briney¹, …

Optimization Of Solid-State Fermentation Parameters For The Production Of Xylanase By Trichoderma Longibrachiatum On Wheat Bran In A Forced Aeration System, Elizabeth R. Ridder, Sue E. Nokes, Barbara L. Knutson

Biosystems and Agricultural Engineering Faculty Publications

The effect of aeration on the production of xylanase by Trichoderma longibrachiatum on wheat bran in a solid-state fermentation (SSF) system has not been investigated. This study was conducted to investigate the interactive effects of aeration, initial moisture content of the substrate, and depth of the substrate on xylanase activity produced in a tray fermenter. The experiment was conducted as a split plot experiment with factorial treatments and three replications of each treatment combination. The whole plot treatment was aeration rate (0, 2.9, 5.7 L/min/kg bran). Initial moisture content (45, 55, 65% w.b.) and depth of substrate (1.0 and 2.5 …

Ec99-794 On-Farm Storage Of Dry Edible Beans: A Survey Of Nebraka Growers And Storage Guidelines, Thomas L. Holman, John A. Smith

University of Nebraska-Lincoln Extension: Historical Materials

Dry edible bean producers in Nebraska typically deliver their crop to local bean dealers directly from the field, for either immediate sale or storage. Estimates are that less than 5 percent of Nebraska growers store part or all of their dry edible bean harvest in on-farm storage. In contrast, a much higher percentage of dry edible bean producers in other growing regions, particularly North Dakota and Michigan, use on-farm storage in their management plan. In Nebraska, corn and wheat producers are most likely to store all or part of their harvested grain on-farm. Why do so few Nebraska dry edible …

Toxicity Of Aspen Wood Leachate To Aquatic Life: Laboratory Studies, Barry R. Taylor, J. Stephen Goudey, N. Bruce Carmichael

Aspen Bibliography

Trembling aspen (Populus tremuloides Michx.), a common hardwood tree throughout Canada, is being harvested at increasing rates for use in paper and building materials. Piles of aspen logs have been observed to produce a dark, watery, acutely toxic leachate. A laboratory study was undertaken to elucidate the nature, strength, and persistence of aspen leachate toxicity and the chemical composition of the leachate. Leaching from aspen chips in the laboratory was rapid, with 1% mass loss in the first 24 h. Another 2 weeks of immersion was necessary to remove all remaining leachable material (3% total)> Fresh aspen leachate derived …

G90-970 Summer Patch And Necrotic Ring Spot, John E. Watkins, Robert C. Shearman, Terrance P. Riordan

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide describes the causes, predisposing conditions, and symptoms of summer patch and necrotic ring spot, and provides recommendations for their control.

Research since 1980 has resulted in considerable progress in identifying causes of the "patch"-type disease of turfgrass. Two of the most destructive patch diseases of turfgrasses are summer patch and necrotic ring spot.

Both summer patch and necrotic ring spot are present in Nebraska turfs. Unfortunately, necrotic ring spot and summer patch cause identical symptoms and cannot be distinguished in the field, and identification in the laboratory is time-consuming (3-6 months) and laborious.

An Aeration Duct Design Model For Flat Grain Storage, Thomas C. Bridges, Douglas G. Overhults, Samuel G. Mcneill, G. M. White

Biosystems and Agricultural Engineering Faculty Publications

Traditionally most grain is stored in circular type bins which provide a convenient means for handling and management. With the excess grain production and government loan programs of the past few years, some producers have used rectangular structures and covered piles to complement their round storages. The recommended management practices used with round bins are still required in those alternative storages and may be more critical in obtaining a quality end product.

One such recommended practice used with round bins is aeration. This practice is used to maintain a uniform temperature in the grain mass, preventing condensation and "hot" spots …

G84-692 Aeration Of Stored Grain (Revised April 1993), David P. Shelton, Thomas L. Thompson

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide discusses the role of aeration as part of a comprehensive management program for maintaining the quality of stored grain.

Grain is stored for a variety of reasons including expectations of higher prices and for use as animal feed. Regardless of the reason, a comprehensive management program is required to maintain grain quality. This includes: 1) making sure that the grain going into storage is dry, clean and in good condition; 2) regularly inspecting the grain to locate temperature, moisture, or insect problems; and 3) aerating the grain to maintain uniform temperature and moisture conditions, prevent localized hot spot …

Microorganisms And Their Effects On Crops And Soils, T. M. Mccalla, T. H. Goodding

Nebraska Agricultural Experiment Station: Historical Circulars

Many of the cropping and tillage practices that a farmer uses are effective in crop productivity because of their influence on microbial activity.

The Influence Of Various Soil Factors Upon Potato Scab Caused By Actinomyces Scabies, R. W. Goss

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

Scab, caused by Actinomyces scabies (Thaxt.) Giiss., is a potato disease of major importance in western Nebraska. Seed treatments are effective in controlling seed-borne scab, but it has been shown that even when healthy or treated seed potatoes are used the disease may be very severe because of infection from the soil. Crop rotation will reduce the incidence of the disease, but the fact that potato scab may cause serious loss in soils never before planted to potatoes indicates that there are numerous factors other than the time interval between potato crops which affect the occurrence of the disease. A …