Brief Summary of Minutes of Annual Meeting

Irmak opened the meeting at 8:40 AM and welcomed all participants to Lincoln. Narayanan also welcomed the participants and highlighted the importance of the regional committee and talked briefly about past accomplishments. The minutes from last years meeting in Lake Tahoe was approved. Membership is in a good shape. The first discussion was on the comments received from the reviewers on the new proposal outline that was submitted for WERA 2941. Reviewers made several suggestions and recommended to create subcommittees for each objective. Martin, Alam, and Irmak worked on the revisions of the new project outline and submitted it to Narayanan at the end of the committee meeting. Inputs from various committee members were incorporated into the revised proposal. State reports: Presentations that outlined progress and accomplishments by each state were made. Snyder talked about reference and actual evapotranspiration (ET) for orchards, rice, etc. and talked about ET interactions with surface and microclimate. CIMIS is a good example of adoption of weather data by growers to make irrigation management decisions. In 1986, only 60 people used CIMIS and by 2010 about 30% of growers are using the network. Marek gave an update on Texas weather and ET network and talked about current as well as future research needs, especially for ET and crop physiological dynamics for new drought-tolerant (or water-optimized) crops. Scherer gave an update on NDAWN and ET-related research in N. Dakota. Staggenborg updated the committee about weather network and research progress in Kansas. Martin talked about irrigation management, AZMET, and other research and educational programs in Arizona. Palmer gave a presentation on weather data quality and integrity analyses. Henggeler presented irrigation scheduling, weather data, and crop coefficients in Missouri. Robinson gave an update on current and future NRCS programs related to irrigation management. Irmak presented highlights of research and educational programs related to agricultural water management and evapotranspiration in Nebraska. The committee members participated in a field tour to the South Central Agricultural Laboratory near Clay Center, Nebraska and other research sites near Geneva. Irmak will send a draft of meeting minutes, participants list, state reports, and a summary of accomplishments and impact to Narayanan. The new Chair is Troy Peters and the next meeting will be held in Washington State. Joe Henggeler was elected as the new secretary. Meeting adjourned at 1:15 PM Respectfully submitted. Suat Irmak

Objective 1. Coordinate the standardization/documentation of crop coefficients used in irrigation scheduling. 1) Coordinate development of a list and/or database of available crop coefficient data in the U.S., including information of the time step upon which the data are based (i.e., degree days, time, percent season, etc.) The Excel program KcMod.xls, which stores crop coefficient information and outputs Kc curves to tables and plots was refined. We are still conducting a literature review on crop coefficients. Eventually, this program and the data will be placed on the WERA 202 web page. 2) Work with ASCE Kc task subcommittee on the development of a procedure for standardizing crop coefficient data. As Chair of the ASCE Kc Task subcommittee and current Chair of the WERA 202, we developed the KcMod.xls program described above. We are still working on a program to estimate virtual crop ETc and to estimate crop coefficients. 3) Coordinate development of a list and/or database of available crop coefficient data in the U.S., including information of the time step upon which the data are based (i.e., degree days, time, percent season, etc.) The TXHPET network currently has the following crop coefficients values associated with both hourly and daily ET data disseminated on a daily basis. 4) Work with ASCE Kc task subcommittee on the development of a procedure for standardizing crop coefficient data. Thomas Marek has completed involvement with the Colorado Division of Water Resources State Engineers Office regarding the design, construction, installation and instrumentation of a large weighing lysimeter for crop coefficient determination in the Arkansas River Valley (ARV) region of Colorado. Current crop growth patterns indicate the large lysimeter is reaching stable soil conditions. A newly design reference based lysimeter (12 Mg) has been installed at the AVR research site and has resulted in exceptional performance. It is currently planted to wheat for stabilization purposes. 5) Coordinate development of a list and/or database of available crop coefficient data in the U.S., including information of the time step upon which the data are based (i.e., degree days, time, percent season, etc.) Work continues on the AZSCHED(Arizona Irrigation Scheduling) program. Funding is presently being sought to alter the program to allow for the inclusion of the ASCE Standardize equation and rework the crop coefficient data accordingly. Presently, the program uses a Modified Penman equation. Work also continues on the development of AZSCHED V2, which has been modified to all for the inclusion of tree crops. Using crop coefficient data from New Mexico and other sources, the program utilizes the Effective Canopy Cover (ECC) presented by Wang and Sammis. AZSCHED V2 also gives information in terms of gallons per tree. 6) Coordinate development of a list and/or database of available crop coefficient data in the U.S., including information of the time step upon which the data are based (i.e., degree days, time, percent season, etc.) The High Plains Regional Climate Center (HPRCC) continues to provide weather data, crop coefficients, and evapotranspiration (ET) data to farmers to be used for irrigation management. Presently, the HPRCC uses modified Penman equation to compute reference ET on an hourly and daily basis. Work continues to switch to ASCE standardized Penman-Monteith equation. Objective 2. Coordinate the adoption of irrigation scheduling technology, including computer models, remote sensing or instrumentation that will help growers more efficiently apply irrigation water. 1) Coordinate evaluation of the effectiveness of delivery methods for the adoption of irrigation scheduling technology. Where possible, work with the NRCS to provide useable ET and irrigation scheduling information to producers. We are still working on a project CALSIMETAW to accomplish estimate crop water needs over the entire State of California. The project ends in December 2010, and we should have a huge database of crop and soil information in addition to climate data for assessing crop water requirements. The CALSIMETAW software will compute historical demand, current evaporative demand using the CIMIS-GOES program for a spatial estimate of ETo, and it will also allow for the input of forecast ETo from the National Weather Service. This program will be useful for water demand planning but also for managing current and future water supplies. Because of budget constraints, the State funded Kc Testing project ended in 2009. However, the field equipment are still being used to measure crop ET and to determine crop coefficients. We have developed an extensive database on the ET of almond orchards that we will finish in the 2010 season. This fall, we will write up a new publication of ET and water management for almonds. 2) Evaluation of the effectiveness of irrigation scheduling tools. This will include any information collected to determine the types of irrigation scheduling tools used by growers. We continue to work on an NRCS CIG grant to work with Oregon State University to expand the OSU irrigation scheduling program into California. Three Farm Advisors (Allan Fulton, Dan Munk, and Blake Sanden) are working with OSU to test the scheduling program with California growers. We have developed a subprogram to assess water stress and salinity effects on yield. We recently found a source of funding to begin testing the stress and salinity program. 3) Coordinate with the irrigation industry group (The Irrigation Association) on updating their database on existing agricultural weather networks in the US, their websites, weather data provided (present and historical) and irrigation scheduling information. a) Development of Quality Control procedures for weather data used for irrigation scheduling. The California Irrigation Management Information System (CIMIS) has an extensive quality control program, and the guidelines are available on the CIMIS webpage. b) Development of interpolation programs to fill in missing data from climate networks. Irrigation scheduling programs will not run with any missing data. The mangers of CIMIS in California are investigating the use of CIMIS-GOES as a tool for interpolation between stations and to estimate missing data. 4) Coordinate evaluation of the effectiveness of delivery methods for the adoption of irrigation scheduling technology. Where possible, work with the NRCS to provide useable ET and irrigation scheduling information to producers. Thomas Marek, Dana Porter and Nicholas Kenny continued to conduct grower ET model validation work near the North Plains Research Field in 2009. The assessment of producer utilization of irrigation scheduling in production practice from monitored data on a total of over 20,000 acres has indicated fewer producers utilizing ET based data, but effective acreage has increased due to use by larger producers. The data also continues to reflect that these irrigated producers are using the groundwater resource at a level below that required for maximum yield production. Texas AgriLife and USDA-ARS efforts continued operations of the Texas High Plains ET network (TXHPET- http://txhighplainset.tamu.edu/) in 2009-2010. TXHPET represents the entire Texas High Plains region (and Pecos area in Far West Texas) and currently operates 17 stations. 5) Coordinate the evaluation of the effectiveness of irrigation scheduling tools. This will include conducting surveys to determine what types of irrigation scheduling tools are being used by different producers in each state. User utilization of the TXHPET website continued to increase slightly due to extension support as reflected in the listserv database. Delivery of grant funded enhancement tools to the TXHPET web based system have been postponed in 2009 due to programming personnel recruiting and retention issues. Additional ET and water management educational and technical support materials are also being developed to promote awareness and application. 6) Continue to report all findings and information on the WCC 202 (WERA 202) website located at the New Mexico State University website. (See http://weather.nmsu.edu/wcc202/ .) 7) Coordinate with the irrigation industry group (The Irrigation Association) on updating their database on existing agricultural weather networks in the US, their websites, weather data provided (present and historical) and irrigation scheduling information. A statewide assessment of Evapotranspiration networks is currently underway and should be completed within the next 6 months. The assessment will include identification and evaluation of agricultural and non-agricultural based Texas ET networks; equipment, data quality, operations and management are being assessed. 8) Coordinate evaluation of the effectiveness of delivery methods for the adoption of irrigation scheduling technology. Where possible, work with the NRCS to provide useable ET and irrigation scheduling information to producers. We have worked closely with the Arizona NRCS and attempted to get the use of AZSCHED listed as an acceptable EQIP cost share. This may help increase the use of AZSCHED in the state. To date, this practice has not been listed on the EQIP list for Arizona. 9) Coordinate the evaluation of the effectiveness of irrigation scheduling tools. This will include conducting surveys to determine what types of irrigation scheduling tools are being used by different producers in each state. 10) Continue to report all findings and information on the WCC 202 (WERA 202) website located at the New Mexico State University website. (See http://weather.nmsu.edu/wcc202/ .) 11) Coordinate with the irrigation industry group (The Irrigation Association) on updating their database on existing agricultural weather networks in the US, their websites, weather data provided (present and historical) and irrigation scheduling information. With increasing pressure on availability of water resources, increase in energy costs, and water allocations in various parts of the state, the NAWMDN was formed to establish an effective partnership between growers, crop consultants, Natural Resources Districts (NRDs), Natural Resources Conservation Service (NRCS), irrigation districts, and University of Nebraska-Lincoln Extension to work together to achieve a common goal of increasing crop water use efficiency and conserve water and energy resources in agriculture. The primary goal of the Network is to enable transfer of high quality research-based information to Nebraskans through a robust and extensive series of demonstration projects established in farmers fields and foster adoption of new irrigation management technologies and methods that increase irrigation efficiency and reduce energy consumption. The demonstration projects are supported by the scientifically-based field research and evaluation projects conducted at the Univ. of Nebraska-Lincoln South Central Agricultural Laboratory (SCAL) near Clay Center, Nebraska. As of May 2010, the number of active growers who joined the Network has increased to more than 400. Due to the information and strategies taught in the Network, participants are changing their behavior in terms of how they manage irrigations and Network is having significant impacts in terms of conserving water and energy resources statewide. The following sections provide a brief description of the Networks impacts and summarize the feedback received from our partners. In 2006, Extension Educators sent out a total of 40 surveys with similar questions and the return rate was 75%. Most cooperators were from the Upper Big Blue NRD and a few from the Little Blue NRD. Of those responding, 25 (83.3%) were producers with 5 (16.7%) crop consultants. In the fall of 2007 Extension Educators sent surveys to 89 producers actively involved in the Network. Fifty surveys were completed and returned for a return rate of 56%. Twenty nine cooperators (58%) were from the Upper Big Blue NRD with nineteen cooperators (38%) from the Little Blue NRD. Of those responding, forty five (90%) were producers with five (10%) crop consultants/other. In 2006, the survey participants represented about 60,000 ac of croplands. The water saving that was reported by the network participants ranged from 1.0 to 3.5 for corn and soybeans with an average of 1.7 for both crops. With the diesel fuel prices in 2006, the water saving range of 1.0 and 3.5 is associated with a dollar saving of $10.00/acre and $33.00/acre, respectively, due to reduced irrigation. The average water saving of 1.7 is associated with a $16.00/acre of net benefit to the growers. Producers were asked to estimate their water savings for corn and soybeans in each year. In 2007, estimated water savings for corn ranged from 0 to 7.5 with an average of 2.0 while soybean water savings ranged from 0 to 5.0 with an average of 2.1. With the diesel fuel prices in 2007, the water savings of 2.6 and 2.1 that was achieved with the NAWMDN are associated with average savings of $24.00/ac and $19.40/ac, respectively. More than 200 surveys were sent out in 2008 and 116 surveys (58%) were returned and 12 of the 23 NRDs and a total of 281,000 ac of croplands were represented in the Network. With 2008 diesel fuel prices, the water conservation was an equivalent of $2,814,000 and $2,270,000 for maize and soybean, respectively, in energy costs saved. A total of 320 surveys were sent out in 2009 and 142 were returned (44% return rate). An average of 2 water saving is associated with 10.00/ac for corn and soybean. In multiple surveys, when asked Did using the equipment or the NAWMDN information influence you on the amount of irrigation water to applied?, almost 100% of those that responded indicated YES! When asked What did you like best about the NAWMDN?, representative comments included: " Hands on help on understanding the use of sensors and ETgage. " Witnessing first hand that the technology works and that we saw a significant water savings. " Extension & NRD personnel are very helpful. " This program saves water and energy without compromising yield! Great leadership by UNL Extension and the NRD! " This was my first year and I liked all the support and guidance I received from your staff. There were VERY helpful in helping me understand how to use my equipment. " Network provides tools and resources to improve irrigation scheduling and saves water and pumping costs while maintaining crop fields. " UNL Extension & NRD staff have been very helpful in helping me gain confidence in the technology. " It gave me more education and information than I could have gotten anywhere else - hands on. In 2005, Suat Irmak, Jennifer Rees, Gary Zoubek, and Brandy Van DeWalle and the Upper Big Blue NRD (UBBNRD) developed a partnership to install ETgages and Watermark sensors in producers fields to teach producers strategies for water and energy conservation. Due to the success of the Network, the UBBNRD cost shared with producers and consultants for the equipment in 2006. This became the pattern each successive year as more partners joined with equipment cost-share coming from the local NRDs. A grant was obtained from USDA-NRCS to allow for expansion of the Network statewide. Two primary tools we adopted initially in the Network are ETgages and Watermark sensors. The ETgage is used to estimate crop water use from reference evapotranspiration and crop coefficient information. The Watermark sensors are used to monitor available water in the crop root zone over time. The Network participants learn about how to utilize these tools to make better-informed decisions in their irrigation management operations. In addition to the demonstration projects, the information is shared and delivered to Network participants and others through field days, seminars, workshops, and outreach publications, media reports, etc. More detailed information on the Network goals and objectives and progress can be found at: http://water.unl.edu/cropswater/nawmdn. Objective 3. Coordinate the development of Quality Control procedures for weather data used for irrigation scheduling. 1) Work with WRC-102 in developing standards for QC data in all climate networks. Publish existing QC for all climate networks in each participating state. The statewide Texas AgriLife Research and USDA-ARS cooperative ET Network assessment project will include assessment and recommendations for QA/QC of meteorological data. 2) Coordinate the sharing of QC software developed in an individual state to be used by all states. The aforementioned awarded grant with the Texas Water Development Board is currently addressing this issue and should be completed within 10 months for application with national society (ASABE, ASCE-EWRI) needs and objectives. 3) Coordinate the development of interpolation programs to fill in missing data from climate networks. Irrigation scheduling programs will not run with missing data. 4) Work with WRC-102 in developing standards for QC data in all climate networks. Publish existing QC for all climate networks in each participating state. 5) Coordinate the sharing of QC software developed in an individual state to be used by all states. 6) Coordinate the development of interpolation programs to fill in missing data from climate networks. Irrigation scheduling programs will not run with missing data. AZSCHED currently uses AZMET (Arizona Meteorological Network) data. AZMET contains data using the ASCE Standardized equation. In its present form, AZSCHED uses historical data for days that are missing real-time weather data. The faculty in charge of AZSCHED and AZMET are currently working to standardize the ET method for both applications. Climate data quality and integrity analyses are done by the HPRCC internally. Educational Activities 1) Educational sessions at meetings about different aspects of irrigation scheduling material and software. Special reports and bulletins Porter, Dana. 2009. Subsurface Drip Irrigation Field Day. FOCUS on Entomology, (Weekly electronic newsletter), Volume 48, Number 13. 21 August 2009. Available online at: http://agfax.com/updates/tx/2009/focussp/0821.pdf Invited papers, presentations, and lectures 2009. Howell, T.A., S.R. Evett, S.A. O'Shaughnessy, P.D. Colaizzi, and P.D. Gowda. Advanced Irrigation Engineering: Precision and Precise. Pp. 353-366 in A. Shaviv, D. Broday, S. Cohen, A. Furman, and R. Kanwar (eds.). Crop Production in the 21st Century: Global Climate Change, Environmental Risks and Water Scarcity. Proc. The Dahlia Greidinger International Symp., Haifa, Israel. 2-5 March 2009. Porter, Dana. 2009. Water Conservation in Agriculture. Texas Water Development Board Major Rivers Program teacher training program at the Region 16 Educational Service Center, Lubbock. TX. Porter, Dana. 2010. Irrigation Management in an Integrated Production System. Annual Meeting of the High Plains Association of Crop Consultants. Lubbock, TX. 03/01/10. 2009. Colaizzi, P.D., Kustas, W.P., Evett, S.R., Howell, T.A., Gowda, P. 2009. Daily evapotranspiration estimates by scaling instantaneous latent heat flux derived from a two-source model [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CDROM. 2009. Colaizzi, P.D., Kustas, W.P., Evett, S.R., Howell, T.A. 2009. A dual-temperature-difference approach to estimate daytime sensible and latent heat fluxes under advective conditions during BEAREX08 [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CDROM. 2009. Evett, S.R., Kustas, W.P., Gowda, P. 2009. Overview of BEAREX08, A remote sensing field experiment on ET at field, multi-field and regional scales using measurements and models [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CDROM. 2009. Gowda, P., Chavez, J.L., Colaizzi, P.D., Howell, T.A. 2009. Remote sensing for crop water use management: Present status and challenges [abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America 2009 Annual Meeting Abstracts, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CD ROM. Martin, E. C. 2009. Use of Irrigation Scheduling Program for water conservation in the U.S. Southwest. Presented at the University of Basilicata. Potenza, Italy. 2/26/09. Media Appearances Porter, Dana. 2009. Late season irrigation management for cotton. Southwest Farm Press. August 10, 2009. Accessed Monday, 08/10/09 at: http://southwestfarmpress.com/cotton/water-management-0810/index.html Porter, Dana. 2009. SDI field day slated Aug. 25. Southwest Farm Press. August 18, 2009. Accessed Monday, 08/18/09 at: http://southwestfarmpress.com/irrigation/subsurface-drip-irrigation-0818/. Porter, Dana. 2009. KFYO Radio with Jim Stewart. August 10, 2009.Live talk radio interview during the noon ag program with Jim Stewart. Presentations at meetings Martin, E. C. 2009. Irrigation Management in Arizona. Presented to the Wyoming Growers Association. Maricopa Agricultural Center. Maricopa, AZ. 1/6/09. Martin, E. C. 2009. Gravity Drip Irrigation Systems. Presented at the North Leupp Family Farms 2009 Harvest Festival. Leupp, AZ. 09/19.09 Martin, E. C. 2009. Irrigation Management in Arizona. Presented to Arizona State University Graduate Class on Sustainability. Tempe, AZ. 10/16/09. Martin, E. C. 2009. Irrigation management around the house. Presented at the Maricopa Agricultural Center Farm Day. Maricopa, AZ. 10/24/09. Presentations at Extension meetings Porter, Dana. 2010. Water Conservation. 2010 Terry County Drip Irrigation Workshop. Brownfield, TX. 01/19/10. Porter, Dana. 2010. Irrigation Management in an Integrated Production System. Llano Estacado Cotton Conference. Muleshoe, TX. 01/21/10. Porter, Dana. 2010. Efficient Irrigation Management for Lawns and Landscapes. South Plains Master Gardeners, Lubbock TX. 02/16/10. Porter, Dana. 2010. Irrigation Management for Texas High Plains Peanut Production. West Texas Peanut Production Workshop. Brownfield, TX. 03/02/10. Porter, Dana. 2010. Pre-Season and Early Season Irrigation and Soil Moisture Management. Crosby County Pre-Season Irrigation Meeting, Ralls, TX. 05/05/10. Martin, E. C. 2009. AZSCHED  Arizona Irrigation Scheduling. Presented Water Conservation Workshop, Peach Springs, AZ. 3/18/09. Martin, E. C. 2009. Drip irrigation and water conservation. Presented at Water Conservation Meeting for Small Farms and Kitchen Gardens. Ft. Defiance, AZ. 4/27/09. Martin, E. C. 2009. Drip irrigation and water conservation. Presented at Water Conservation Meeting for Small Farms and Kitchen Gardens. Pinon, AZ. 4/28/09. Martin, E. C. 2009. Drip irrigation and water conservation. Presented at Water Conservation Meeting for Small Farms and Kitchen Gardens. Leupp, AZ. 4/27/09. Martin, E. C. 2009. AZSCHED  Arizona Irrigation Scheduling. Presented Crop Management meeting, Parker, AZ. 12/03/09. Martin, E. C. 2009. Drip irrigation and water conservation. Presented at Water Conservation Meeting for Small Farms and Kitchen Gardens. Yuma, AZ. 12/9/09. Workshops Beltwide Cotton Conference Irrigation Workshop, New Orleans, LA, January 5, 2010. Dana Porter, Coordinator. Concurrent sessions addressed Irrigation Best Management and Advanced Irrigation Technologies. USDA-ARS Ogallala Aquifer Initiative SDI Field Days, Colby, KS and Halfway, TX, August 4 and August 25, respectively. USDA-ARS Ogallala Aquifer Initiative funded collaboration with Kansas State University and USDA-ARS at Bushland. Dana Porter and Freddie Lamm, coordinators. Texas AgriLife Extension Service North Region Agent Training Irrigation Workshop, Lubbock, TX, August 13, 2009. Professional development training for county extension agents in the North Region (Districts 1, 2 and 3), Dana Porter, Coordinator and instructor and Nich Kenny, instructor. Irmak, S. August 18, 2009. Subsurface Drip Irrigation Fundamentals. UNL South Central Agricultural Laboratory field day. Clay Center, NE. 119 people. Irmak, S. August 18, 2009. Water management basics with subsurface drip irrigation. UNL South Central Agricultural Laboratory Subsurface Drip Irrigation Field Day. Clay Center, NE. 119 people. Irmak, S. September 22, 2009. Crop water stress index (CWSI) for irrigation management. Upper Big Blue NRD-UNL Extension Workshop. York, NE. 17 people. Irmak, S. November 16, 2009. Update on Nebraska Agricultural Water Management Demonstration Network (NAWMDN), York, NE, 18 people. Irmak, S. January 4, 2010. Measurement of evapotranspiration for various vegetation surfaces: Implications for developing integrated water management plans by Natural Resources Districts. Grand Island, NE. 18 people. Irmak, S. January 5, 2010. Water management strategies in NAWMDN. Crop Protection Clinic. Hastings, NE. 60 people. Irmak, S. January 5, 2010. Measurement of evapotranspiration, plant physiology, soil temperature, and other surface energy fluxes in relation to tillage practices. Crop Protection Clinic. Hastings, NE. 65 people. Irmak, S. January 13, 2010. Comparison of evapotranspiration, yield, and plant physiology under no-till and disk-till practices. Crop Protection Clinic. Hastings, NE. 60 people. Irmak, S. January 13, 2010. Nebraska Agricultural Water Management Demonstration Network: Update and Future Plans. Crop Protection Clinic. Hastings, NE. 70 people. Irmak, S. January 19, 2010. Evapotranspiration measurement for various vegetation surfaces in Central Platte Valley. Ag. Update Extension Program, Central City, NE. 75 people. Irmak, S. January 19, 2010. Large scale implementation of irrigation management strategies for increasing water use efficiency of corn. Ag. Update Extension Program, Central City, NE. 75 people. Irmak, S. January, 27, 2010. Evapotranspiration, microclimate and plant physiology interactions for different tillage practices. 2010 Annual NEATA (Nebraska Agricultural Technologies Association) conference and Trade Show. Grand Island, NE. 40 people. Irmak, S. January, 27, 2010. Sensor-based irrigation management. 2010 Annual NEATA (Nebraska Agricultural Technologies Association) conference and Trade Show. Grand Island, NE. 40 people. Irmak, S. February 16, 2010. Evapotranspiration for tilled and untilled fields an implications for irrigation management. Holdrege No-Till Conference. Holdrege, NE. 200 people. Irmak, S. February 23, 2010. Evapotranspiration and plant physiology relationships for three invasive species in the Platte River Valey. Central Plains Irrigation Conference, Kearney, NE. 175 people. Irmak, S. February 24, 2010. Remote sensing/satellite estimation of evapotranspiration for invasive species in the North Platte River in Morrill and Scottsbluff Counties in Nebraska. Central Plains Irrigation Conference, Kearney, NE. 175 people. Irmak, S. March 10, 2010. Management of subsurface drip irrigation for corn and soybean production. Grand Island, NE. 52 people. Irmak, S. March 17, 2010. Large scale implementation of research-based irrigation management tools/strategies for maize. Hamilton County NAWMDN program. Aurora, NE. 46 people. Irmak, S. March 19, 2010. Large sacel implementation of irrigation management tools for corn and soybean production. Producer Workshop. York, NE. 40 people. Irmak, S. March 19, 2010. Update on Nebraska Agricultural Water management Demonstration Network. York, NE. 40 people. Irmak S. March 25, 2010. Nebraska Water and Energy Flux Measurement, Modeling and Research Network (NEBFLUX). Grand Island, NE. 55 people. Irmak, S. March 30, 2010. Research and extension projects update. Clay Center, NE. 17 people. Irmak, S. May 4, 2010. Research and educational programs related to agricultural water management: Highlights from Nebraska. Second Annual UNL Water for Food Conference. Lincoln, NE. 320 people. Irmak, S. May 13, 2010. Evapotranspiration measurement network. UNL Road Scholar Tour. Central City, NE. 35 people. Irmak, S. June 15, 2010. Understanding ET: Implications for water management. DNR Modeling Seminar Series. Lincoln, NE, 40 people. 2) Development of effective documentation of irrigation scheduling information available through the web. ASCHED program is available at http://ag.arizona.edu/crops/irrigation/azsched/azsched.html for free download. In 2009, over 150 downloads were recorded. Since its release in 2004, over 700 copies have been downloaded. Additionally, a program called Drip System Flow Conversion Program (DripCon) is available at http://ag.arizona.edu/crops/irrigation/azsched/drip.html. The program allows growers who are more comfortable working in inches of water to better schedule their irrigation applications for drip irrigation systems. Given the tape geometry and flow rate, growers can get estimates of the amount of time a drip systems would need to run in order to develop a set amount (in inches) of water.