Plant Sciences Commons^™

In-Field Optimization Of Soil Water Parameters For Irrigation Scheduling, Ishani Lal

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Several precision technologies are being developed to assist farmers in informed irrigation decision-making. These technologies aim to enhance irrigation water efficiency, check overirrigation, boost crop water productivity, and promote the sustainable utilization of water resources. We hypothesize that soil moisture parameters used in irrigation decision tools need to be validated to best represent the correct state of soil moisture in the field. This is an important factor that affects the accuracy of the irrigation recommendations forecasted by the decision support tools. In this research, we evaluated different methods of estimating field capacity (FC) and wilting point (WP) to optimize soil …

Arkansas Soybean Research Studies 2022, Jeremy Ross

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading soybean-producing state in the mid-southern United States. Arkansas ranked 11th in soybean production in 2022 when compared to the other soybean-producing states in the U.S. The state represented 3.04% of the total U.S. soybean production and 3.64% of the total acres planted in soybean in 2022. The 2022 state soybean average yield was 52.0 bushels per acre, tying the previous state yield record of 52 bushels per acre set in 2021. The top five soybean-producing counties in 2022 were Mississippi, Crittenden, Phillips, Poinsett, and Arkansas (Table 1). These five counties accounted for over 35.7% of the …

Irrigation Increases On-Farm Soybean Yields In Water-Limited Environments Without A Trade-Off In Seed Protein Concentration, Walter D. Carciochi, Patricio Grassini, Seth Naeve, James E. Specht, Mitiku Mamo, Ron Seymour, Aaron Nygren, Nathan Mueller, Sarah Sivits, Christopher A. Proctor, Jenny Rees, Todd Whitney, N. Cafaro La Menza

Department of Agronomy and Horticulture: Faculty Publications

Context or problem: A trade-off between seed protein concentration (SPC) and yield has been reported for soybean. Therefore, assessing management practices that can nullify this trade-off is relevant to avoid further declines in SPC in the future as yield continues to increase. While the positive effect of irrigation on yield is well documented, only a few studies have assessed the impact of irrigation on SPC, showing conflicting results.

Objective or research question: The objective was to determine if the trade-off between seed yield and SPC persists when irrigation is applied and how management, soil, and weather factors influence the trade-off. …

Arkansas Soybean Performance Tests 2022, J. F. Carlin, R. B. Mulloy, R. D. Bond

Arkansas Agricultural Experiment Station Research Series

Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/ or marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.

Arkansas Soybean Research Studies 2021, Jeremy Ross

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading soybean-producing state in the mid-southern United States. Arkansas ranked 11th in soybean production in 2021 compared to the other soybean-producing states in the U.S. The state represented 3.49% of the total U.S. soybean production and 3.49% of the total acres planted in soybean in 2021. The 2021 state soybean average yield was 52.0 bushels per acre, setting a new state record and surpassing the previous yield record of 51.5 bushels per acre set in 2020. The top five soybean-producing counties in 2021 were Mississippi, Phillips, Crittenden, Poinsett, and Arkansas (Table 1). These five counties accounted for …

Arkansas Soybean Research Studies 2020, Jeremy Ross

Arkansas Agricultural Experiment Station Research Series

The 2020 Arkansas Soybean Research Studies includes research reports on topics pertaining to soybean across several disciplines from breeding to post-harvest processing. Research reports contained in this publication may represent preliminary or only data from a single year or limited results; therefore, these results should not be used as a basis for long-term recommendations. Several research reports in this publication will appear in other University of Arkansas System Division of Agriculture’s Arkansas Agricultural Experiment Station publications. This duplication is the result of the overlap in research coverage between disciplines and our effort to inform Arkansas soybean producers of the research …

Evaluation Of Soil Moisture Sensing Technologies In Silt Loam And Loamy Sand Soils: Assessment Of Performance, Temperature Sensitivity, And Site- And Sensor-Specific Calibration Functions, K. Sharma, Sibel Irmak, M. S. Kukal, M. C. Vuran, Amit J. Jhala, Xia Qiao

Department of Agronomy and Horticulture: Faculty Publications

Reliable soil moisture information is vital for optimal irrigation management, farm-level agronomic decision-making, hydrologic studies, and cropping systems modeling. A wide range of soil moisture sensing technologies is commercially available, but their performance must be evaluated for diverse conditions of use. In this research, we investigated nine soil moisture sensors based on time-domain reflectometry, capacitance, and electrical resistance principles in production field conditions with two installation orientations, i.e., vertical (V) and horizontal (H), in two soils (silt loam and loamy sand) and two growing seasons (2017 and 2018). Performance parameters deduced from the 2017 datasets revealed that sensor type and …

Effects Of Different Water And Nitrogen Regimens On Yield Of Winter Wheat Produced In Nebraska, Joseph Emory Davis

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Wheat is the 3rd most prominent crop in the USA and approximately 50% is exported annually. Nebraska wheat production is 11^th in the country, and it plays a major role in the state's agricultural economy, especially in western NE. Generally, wheat is grown under dryland conditions and the region grows much more wheat on unirrigated land than it does on irrigated. However, deficit irrigation has shown great value in producing high yielding wheat with much less water than needed for other crops. Finding new ways to leverage irrigation in wheat production may help address the need to produce food …

Benchmarking Irrigation Water Use In Producer Fields In The Us Central Great Plains, Katherine E. B. Gibson, Justin E. Gibson, Patricio Grassini

Department of Agronomy and Horticulture: Faculty Publications

Efficient use of freshwater resources is necessary to balance food production and long-term sustainability of irrigated agricultural systems. Here we developed a framework to benchmark irrigation water use relative to crop yield for individual fields based on site-specific weather and soil. Subsequently, we used the framework to diagnose on-farm irrigation management, in relation to crop production, in maize and soybean producer fields in Nebraska (USA).We found actual irrigation to be similar to estimated irrigation water requirement in about half of the fields (i.e. small water surplus). Remarkably, these fields attained yields similar to fields where actual irrigation exceeded water requirements …

Crop Water Stress Index Of An Irrigated Vineyard In The Central Valley Of California, John H. Prueger, Christopher K. Parry, William P. Kustas, Joseph G. Alfieri, Maria M. Alsina, Héctor Nieto, Tiffany G. Wilson, Lawrence E. Hipps, Martha C. Anderson, Jerry L. Hatfield, Fen Gao, Lynn G. Mckee, Andrew Mcelrone, Nurit Agam, Sebastian A. Los

Plants, Soils, and Climate Faculty Publications

Water-limiting conditions in many California vineyards necessitate assessment of vine water stress to aid irrigation management strategies and decisions. This study was designed to evaluate the utility of a Crop Water Stress Index (CWSI) using multiple canopy temperature sensors and to study the diurnal signature in the stress index of an irrigated vineyard. A detailed instrumentation package comprised of eddy covariance instrumentation, ancillary surface energy balance components, soil water content sensors and a unique multi-canopy temperature sensor array were deployed in a production vineyard near Lodi, CA. The instrument package was designed to measure and monitor hourly growing season turbulent …

Empowerment And Tech Adoption: Introducing The Treadle Pump Triggers Farmers’ Innovation In Eastern Ethiopia, Shimelis Beyene, Teshome H. Regassa, Belaineh Legesse, Martha Mamo, Tsegaye Tadesse

Department of Agronomy and Horticulture: Faculty Publications

In 2013, thirty-eight treadle pumps (TPs) were installed as low-cost technology introduction for small-scale irrigation in eastern Ethiopia. This pilot project also trained six farmers on tube well excavation, as well as the installation and maintenance of pumps. In June 2015, researchers visited nine of the thirty-eight TP villages and found only two TPs functioning as originally installed. The rest were replaced with a new technology developed by the trained farmers. Farmers, empowered by training, gained more control in developing technology options tailored to local needs and conditions of their communities. Adopters of the new technology stated that the limited …

Long-Term Winter Wheat (Triticum Aestivum L.) Seasonal Irrigation Amount, Evapotranspiration, Yield, And Water Productivity Under Semiarid Climate, Koffi Djaman, Michael O'Neill, Curtis K. Owen, Daniel Smeal, Margaret West, Dallen Begay, Samuel Allen, Komlan Koudahe, Suat Irmak, Kevin Lombard

Department of Agronomy and Horticulture: Faculty Publications

A long-term field experiment was conducted from 2002 to 2014 for the evaluation of yield and water productivity of three winter wheat varieties—Kharkof, Scout 66, and TAM107—under sprinkler irrigation at New Mexico State University Agricultural Science Center at Farmington, NM. Winter wheat daily evapotranspiration was estimated following the United Nations Food and Agriculture Organization FAO crop coefficient approach (ETc = Kc ETo), and crop water use efficiency (CWUE), evapotranspiration water use efficiency (ETWUE), and irrigation water use efficiency (IWUE) were estimated for each growing season. There was inter-annual variation in seasonal precipitation and irrigation amounts. Seasonal irrigation amounts varied from …

Assessing Explanatory Factors For Variation In On-Farm Irrigation In Us Maize-Soybean Systems, Katherine E.B. Gibson, Haishun S. Yang, Trenton E. Franz, Dean E. Eisenhauer, John B. Gates, Paolo Nasta, Bhupinder S. Farmaha, Patricio Grassini

Department of Agronomy and Horticulture: Faculty Publications

Irrigation exhibits large variation across producer fields, even within same region and year. A knowledge gap exists relative to factors that explain this variation, in part due to lack of availability of high-quality irrigation data from multiple field-years. This study assessed sources of variation in irrigation using a large database collected during 9 years (2005–2013) from ca. 1400 maize and soybean producer fields in Nebraska, central USA (total of 12,750 field-year observations). The study area is representative of ca. 4.5 million ha of irrigated land sown with maize and soybean. Influence of biophysical (weather, soil, and crop type) and behavioral …

Nitrogen And Water Effects On Canopy Sensor Measurements For Site-Specific Management Of Crops, Nicholas C. Ward

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Water and nitrogen (N) are undoubtedly the two largest agricultural inputs globally. Coupled with advances in site-specific management technology their integration into production agriculture will allow for the most efficient use these crop input resources. Active canopy sensors offer the ability to measure biophysical plant traits rapidly and make assessments about plant status. Specifically, optical sensor measurements of light reflectance assess plant N status allowing for in-season and on-the-go N recommendations and applications; while infrared thermometers (IRT) measurement of canopy temperature can be used a tool for irrigation management. To evaluate how these technologies work among different plant stress environments …

Soil And Crop Response To Stover Removal From Rainfed And Irrigated Corn, Ian Kenney, Humberto Blanco-Canqui, Deann R. Presley, Charles W. Rice, Keith Janssen, Brian Olson

Department of Agronomy and Horticulture: Faculty Publications

Excessive corn (Zea mays L.) stover removal for biofuel and other uses may adversely impact soil and crop production. We assessed the effects of stover removal at 0, 25, 50, 75, and 100% from continuous corn on water erosion, corn yield, and related soil properties during a 3-year study under irrigated and no-tillage management practice on a Ulysses silt loam at Colby, irrigated and strip till management practice on a Hugoton loam at Hugoton, and rainfed and no-tillage management practice on a Woodson silt loam at Ottawa in Kansas, USA. The slope of each soil was <1%. One year after removal, complete (100%) stover removal resulted in increased losses of sediment by 0.36–0.47 Mg ha-1 at the irrigated sites, but, at the rainfed site, removal at rates as low as 50% resulted in increased sediment loss by 0.30 Mg ha-1 and sediment-associated carbon (C) by 0.29 kg ha-1. Complete stover removal reduced wet aggregate stability of the soil at the irrigated sites in the first year after removal, but, at the rainfed site, wet aggregate stability was reduced in all years. Stover removal at rates ≥ 50%resulted in reduced soil water content, increased soil temperature in summer by 3.5–6.8 °C, and reduced tem-perature in winter by about 0.5 °C. Soil C pool tended to decrease and crop yields tended to increase with an increase in stover removal, but 3 years after removal, differences were not significant. Overall, stover removal at rates ≥50% may enhance grain yield but may increase risks of water erosion and negatively affect soil water and temperature regimes in this region.

Drivers Of Spatial And Temporal Variation In Soybean Yield And Irrigation Requirements In The Western Us Corn Belt, Patricio Grassini, Jessica A. Torrion, Kenneth Cassman, Haishun Yang, James Specht

Department of Agronomy and Horticulture: Faculty Publications

Both rainfed and irrigated soybean production are important in Nebraska (western US Corn Belt), accounting for a respective 48 and 52% of the state’s soybean production of 7 Mt on a respective 55 and 45% share of the state soybean area of 1.9 Mha. To date, no assessment of factors that may account for regional and inter-annual variation in yield and irrigation amount has been performed. To accomplish that objective, we evaluated a database containing on-farm field yields and total irrigation amount used in those fields. These data have been collected annually from ca. 1000 soybean fields in six regions …

W283 Should Tennessee Tobacco Growers Invest In Irrigation, Fertigation Or Plastic Mulch?, Brian G. Leib, Eric F. Caldwell, Hubert J. Savoy, John R. Buchanan

Field & Commercial Crops

Version 2.0

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 …

Crop Updates 2007 - Lupins, Pulses And Oilseeds, Mark Seymour, Jacinta Falconer, Ian Pritchard, Rodger Beermier, Wayne Parker, Martin Harries, Kedar Adhikari, Geoff Thomas, Peter White, Bevan Burichell, Mike Baker, Bob French, Jo Walker, Laurie Maiolo, Leigh Smith, Mark Sweetingham, Lorne Mills, Harmohinder Dhammu, Ben Tang, Qifu Ma, Zed Rengel, Bill Bowden, Ross Brennan, Reg Lunt, Tim Hilder, Tim Maling, A. Diggle, D. Thackray, R. A.C. Jones, K. H.M. Siddique, Vijay Jayasena, Leonardus Kardono, Ken Quail, Ranil Coorey, Hannah Williams, Don Elani Jayawardena, Kerry Regan, Rod Hunter, Tanveer Khan, Jenny Garlinge, Heather Clarke, W. Macleod, S. Morgan, A. Harris, Alan Meldrum, Helen Bowers, A. Bakr, Phillip Chambers, Chris Veitch, Tony Leonforte, Pam Burgess, Leanne Young, Brenda Coutts, Donna O'Keefe, Rhonda Pearce, Monica Kehoe, Terri Jasper, Tim Pope, Michael Materne, Ping Si, Mike Walsh, H. H. T. Phan, S. R. Ellwood, J. Hane, A. Williams, R. Ford, S. Thomas, R. Oliver, Katie Robinson, Mohammad Amjad, Graham Walton, Pat Fels, Andy Sutherland, Imma Farre, Michael Robertson, Senthold Asseng3, Ravjit Khangura, Moin Salam

Crop Updates

This session covers forty eight papers from different authors:

2006 REGIONAL ROUNDUP

1. South east agricultural region, Mark Seymour¹ and Jacinta Falconer², ¹Department of Agriculture and Food, ²Cooperative Bulk Handling Group

2. Central agricultural region, Ian Pritchard, Department of Agriculture and Food

3. Great Southern and Lakes region, Rodger Beermier, Department of Agriculture and Food

4. Northern agricultural region, Wayne Parker and Martin Harries, Department of Agriculture and Food

LUPINS

5. Development of anthracnose resistant and early flowering albus lupins (Lupinus albus L) in Western Australia, Kedar Adhikari and Geoff Thomas, Department of …

2006 Lowbush Blueberry Project Reports, Kristi Crowe, Alfred A. Bushway, Rodney J. Bushway, Vivian Ch Wu, Brian Perkins, Pam Small, Darrell Donahue, Frank Drummond, Judith Collins, Floyd Dowell, Dorothy J. Klimis-Zacas, Mary Ellen Camire, Gordon Starr, David E. Yarborough, S Hoffmann, Daniel J. Bell, Seanna L. Annis, Tamara Levitsky, Loretta Kreider, Kristen Mcgovern, K Frost, John M. Smagula, Qian Wang, Kerry Fl Guiseppe

Wild Blueberry Research Reports

The 2006 edition of the Lowbush Blueberry Project Reports was prepared for the Wild Blueberry Commission of Maine and the Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:

1. Evaluation of Emerging Disinfection Technologies for Wild Blueberry Processing

2. Incorporation of wild blueberry puree into a soy-based burger and its effect on sensory and chemical properties of the broiled burgers

3. Infestation Detection using NIRS

4. Mechanism of Action through which Wild Blueberries affect Arterial Functional Properties in Normotensive and Spontaneously Hypertensive Rats

5. Practical Microbial Control Approach for Wild Blueberries …

2003 Wild Blueberry Project Reports, Alfred A. Bushway, Rodney J. Bushway, Kristi Crowe, Brian Perkins, Mary Ellen Camire, Kathy Davis-Dentici, Michael Dougherty, Beth Bernier, Darrell Donahue, Frank Drummond, Judith Collins, Floyd Dowell, Dorothy J. Klimis-Zacas, Gordon C. Starr, David E. Yarborough, Constance S. Stubbs, Seanna L. Annis, John M. Smagula, Ilse W. Fastook, Kerry F. Lough

Wild Blueberry Research Reports

The 2003 edition of the Wild Blueberry Project Reports was prepared for the Wild Blueberry Commission of Maine and the Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:

1. Factors Affecting the Microbial and Pesticide Residues Levels on Lowbush Blueberries

2. Effect of Blueberry Products on Oxidation in Ground Beef Patties

3. Infestation Detection using Near-Infrared Spectroscopy

4. Whole Wild Blueberries and Arterial Functional Properties

5. Irrigation Water use in Wild Blueberry Production

7. Control Tactics for Blueberry Pest Insects

8. IPM Strategies

9. Biology and Ecology of Blueberry Pest Insects, …

Crop Updates 2003 - Geraldton, David Stephens, James Fisher, Ian Edwards, Dennis Wise, Andrew Young, Robert Loughman, Ciara Beard, Greg Shea, Blakely Paynter, Roslyn Jettner, Kevin Young, Kevin Walden, Geoff Thomas, Robin Wilson, Iain Barclay, Robyn Mclean, Jenny Garlinge, Bill Lambe, Neil Venn, Peter Clarke, Martin Harries, Bob French, Wayne Parker, Murray Blyth, Peter Norris, Greg Lyle, Katheryn Steadman, Amanda Ellery, Sally C. Peltzer, Kari-Lee Falconer, Russell Speed, Terry Piper, Harmohinder Dhammu, Bindi Webb, Paul Blackwell, Phil Logue, Nigel Moffat, Rohan Ford, Miles Obst, Frances Hoyle, Leanne Schulz, Judith Devenish, Peter Newman, Grant Morrow, Ian Foster, Darshan Sharma, Marnie Thomas, Graham Walton, Hasan Zaheer, Paul Carmody, Mike Clarke, Paul Raper

Crop Updates

This session covers twenty eight papers from different authors

1. Seasonal Outlook: What is in store for 2003, David Stephens, Department of Agriculture

2. Examining The Management Options For Wheat Crops In The Coming Season, James Fisher, Department of Agriculture

3. GMO’s – what do they offer? Ian Edwards, Grain Bio Tech Australia Pty Ltd

4. The Big Gamble – Wheat prices for 2003, Dennis Wise, Profarmer

5. Market outlook for other grains, Andrew Young, General Manager Agricorp

6. Stripe rust – where to now for the WA wheat industry? Robert Loughman, Ciara Beard and Greg Shea, Department of Agriculture

7. Baudin …

   ---

   Go to article

Pb1721 Irrigation Cost Analysis Handbook, The University Of Tennessee Agricultural Extension

Field & Commercial Crops

Irrigation is a risk management tool. The risk of yield reduction due to drought is minimized with irrigation, because moisture can be added to the soil to match the water requirements of the crop. Irrigation is also a major capital investment. The yield produced under irrigation must be sufÞ cient to produce a positive return on the investment.

This handbook is intended to assist users in determining the economics of investing in irrigation at their location. All irrigation systems are unique. Many factors are used to estimate the cost of irrigation, and each of these factors will vary with location. …

2001 Wild Blueberry Csrees Project Reports, Alfred A. Bushway, Mary Ellen Camire, Kathy Davis-Dentici, Michael Dougherty, Kathleen Buzzard, Rodney J. Bushway, Kristi Crowe, Brian Perkins, Darrell W. Donahue, Frank Drummond, Judy Collins, Rose Mary Seymour, Maya Panangadan, Maribeth Haines, Heather Mclaughlin, S L. Annis, C S. Stubbs, John M. Smagula, Walter Litten, Karen Loennecker, Adam Nielsen, David E. Yarborough, Timothy M. Hess, John Jemison

Wild Blueberry Research Reports

The 2001 edition of the Wild Blueberry CSREES Progress Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:

1. Effect of Wild Blueberry Products on Oxidation in Meat Based Food Systems

2. Factors Affecting the Microbial and Pesticide Residues Levels on Wild Blueberries

3. Determination of Pesticide Residue Levels in Fresh and Processed Wild Blueberries

4. Separation of Maggot-Infested Wild Blueberries in the IQF Processing Line

5. Water Use of Wild Blueberries and the Impact of Plant Water …

Proceedings Of Carrot Conference Australia, Perth, Western Australia, Figaro Natoli, Sam Calameri, Albert Grubelich, Allan Mckay, Elaine Davison, David Ellement

Conference papers and presentations

No abstract provided.

Agricultural Water Management In The Missippi Delta Region Of Arkansas, H. Don Scott, James A. Ferguson, Linda Hanson, Todd Fugitt, Earl Smith

Research Reports and Research Bulletins

Agriculture is the largest use of soil and water resources in eastern Arkansas. This bulletin summarized the recent historical use of soil and water by agriculture and the impact of irrigation on yields of rice, soybeans and cotton. The experiments conducted in the field to quantitatively schedule irrigations of crops are summarized. The results show the close relationship between the irrigation of crops and the extraction of water from the Alluvial Aquifer. The implications of this relationaship for the future are discussed.

1995 Csrees Reports, Alfred A. Bushway, Therese M. Work, Huanli Zhang, Raoul Pelletier, Rodney J. Bushway, Brian Perkins, Mary Ellen Camire, Michael Dougherty, H Y. Forsythe Jr, Judith A. Collins, Frank A. Drummond, Constance S. Stubbs, Paul E. Capiello, John M. Smagula, Youzhi Chen, Scott Dunham, Walter Litten, David E. Yarborough, Timothy M. Hess, John Jemison

Wild Blueberry Research Reports

The 1995 edition of the CSREES Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:

1. Factors Affecting the Quality of IQF Blueberries

2. Preventing the Bleeding of Blueberry Fruit in Bakery Products

3. Removing Water from Blueberries Before Freezing

4. Determination of Pesticide Residue Levels in Freshly Harvested and Processed Lowbush Blueberries

5. Industrial Ingredients from Cull Blueberries

6. Application of Heat as a Method of Controlling Secondary Pest Insects on Lowbush Blueberries

7. The Phenology and …

Crop Irrigation Requirement Program, P M. Aylmore, G J. Luke, E J. Hauck

Resource management technical reports

This program was written as an aid for predicting the irrigation requirements of annual and perennial crops grown in different regions of Western Australia. The program can also be used as a guide for estimating irrigation requirements under different management strategies or for groundwater allocation.

Maine Blueberry Advisory Committee Research Report, H Y. Forsythe Jr, Judith A. Collins, J Riley, David H. Lambert, David E. Yarborough, E A. Osgood, Frank A. Drummond, John M. Smagula, Delmont Emerson, Warren Hedstrom, Alfred A. Bushway, Mary Ellen Camire, Rodney J. Bushway, Susan A. Ismail, Therese M. Work, Linda J. Irvine, Craig J. Schroeder, Jasotha Kugabalasooriar, Richard J. Rowe, Gilles H. Lemieux, Rene Verrault, Paul E. Cappiello, James D. Leiby, Michele C. Marra, Willem Brutsaert, David Brooks, E R. Huff

Wild Blueberry Research Reports

The 1990 edition of the Maine Blueberry Advisory Committee Research Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers with the Maine Agricultural Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include:

1. Biology and action thresholds of secondary blueberry pests

2. Control of blueberry maggot

3. Control of secondary blueberry pests

4. Application of steam as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study

5. Pollination of the lowbush blueberry by native bees

6. …

Influence Of Prestress Environment On Annual Bluegrass Heat Tolerance, Dennis L. Martin, David J. Wehner

Office of the Dean (CAFES) Scholarship

Annual bluegrass (Poa annua L.) turf quality is reduced during periods of high temperature. To predict heat stress injury and develop improved prestress maintenance practices, an understanding of the seasonal variation in annual bluegrass heat tolerance and the influence of soil moisture on heat tolerance is crucial. Annual bluegrass growing in the field on a Drummer silty clay loam (fine silty, mixed, mesic Typic Haplaquolls) was sampled on 23 dates over two growing seasons and brought to a laboratory for exposure to high temperature. Prestress environmental conditions (air and soil temperature, soil matric potential, plant water potential, daylength, rainfall and …