Saturday Feb 04, 2012
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Precision Gene Technology Stops Cotton Pests

Clemson University entomologists created a nice visual demo field that shows the value of Bt cotton compared to non-Bt.

The furry-looking insects start their development smaller than the head of a pin, but the caterpillars soon develop an appetite for cotton as big as the crop.

To demonstrate the insects’ destructive power, Clemson University entomologist Jeremy Greene planted two cotton varieties — one genetically modified to provide protection from caterpillars, one not — in a demonstration field at the Edisto Research and Education Center.

The non-protected cotton was planted in a pattern that spelled the word “Tigers.” Aerial photographs taken near harvest show that while the genetically modified crop survived intact, the unprotected plants provided three square meals a day for the crop-hungry herbivores.

The demonstration crop was planted in late May last year and grew through the summer.

“We wanted to show the kind of damage caterpillars can do when they’re allowed to eat unprotected cotton freely,” Greene said.

Cotton is a multimillion dollar crop in the Palmetto State involving hundreds of farms and thousands of jobs.

Nearly all cotton varieties planted in South Carolina contain genes found in the naturally occurring Bacillus thuringiensis, or Bt, that help the plant make its own insecticide.

Bt cotton is genetically modified with specific genes from Bacillus thuringiensis. Think of it as in-plant insecticide, Greene said. This technology has been commercially available since 1996, but improvements over the years have enhanced the control of major pests.

The plant makes the proteins just like the bacterium does. The particular strain of Bacillus thuringiensis available in cotton, which was planted for the demonstration, works only on immature lepidopterans, or caterpillars. Lepidoptera is the insect order for moths and butterflies. The toxic proteins have no ill effects on other organisms.

“During 2010, we had a very high population of bollworm that infested cotton acres at the Edisto research center,” Greene said. “We planted a non-Bt variety where you see the word ‘Tigers’ and a two-gene Bt cotton where you see the fluffy white cotton lint.”

The striking difference in appearance is due to bollworms eating all of the green cotton bolls in the non-Bt variety that did not have protection from the insects.

Greene applied no insecticides to control caterpillars in this field, so the difference between the Bt and non-Bt varieties is illustrated clearly.

A color-coded yield map, produced by precision agriculture specialist Will Henderson at the Edisto center, illustrates the crop after harvest using one of the center’s pickers that is equipped with a yield monitor. The map shows “good” yields in green and “bad” yields in red.

The damage potential of important lepidopteran species, such as bollworm, is not new, Greene said. Moths have flown into fields, laid eggs and hatched as injurious caterpillars for decades.

Transgenic Bt technology and its improvement over the years are relatively recent advances that represent effective, economical and environmentally friendly control of these insects in agriculture, he said.

“We know what they can do to non-Bt cotton versus Bt cotton — the photographs speak for themselves,” Greene said.

Missouri Researchers Reduce Greenhouse Gases, Raise Yields

Researchers with the University of Missouri have found a way to reduce the amount of greenhouse gases emitted by agricultural operations, while increasing the yields of the crops. And precision agriculture equipment is playing a key role.

Research agronomist at MU’s Greenley Research Center in northeast Missouri Kelly Nelson says that ag operations in the U.S. create 58 percent of the world’s nitrous oxide, a greenhouse gas that contributes 300 times more to global warming than carbon dioxide. His work is focusing on the placement and source of fertilizers to reduce that nitrous oxide number.

“The fertilizer placement for a no-till system would be, for dry fertilizers, would be broadcast applied over the soil surface. We thought with a strip-till system we can till a small area, usually about 12 inches wide, usually less than 30 percent of the field, and maintain good soil cover, and apply that fertilizer in a band right under the plant so it has easy access to the fertilizer.”

He says using an enhanced-efficiency polymer coated urea and non-coated urea, they were able to test in a clay pan soil, where there is very poor internal drainage and fertilizer loss can be substantial.

“We saw that over the entire growing season, we were emitting about 2.4 to 3.8 percent of the nitrogen applied as nitrous oxide.” Nelson says that while it doesn’t seem like a big number, it shows how much greenhouse gas can be emitted into the atmosphere. Plus, he says this system was able to increase yields. “We were seeing that our strip-till system was increasing yields by about 50 bushels to the acre (in corn), compared to our no-till system.” And it reduced greenhouse gas emissions by about 25 percent, compared to no-till systems.

Nelson admits that they didn’t compare the amount of emissions for running the extra equipment in the strip-till versus no-till operation, but that would be a comparison of CO2 emissions, and as stated earlier, much less impactful when you are considering greenhouse gases. Plus, the increased yields should help make up any differences by increasing the amount of carbon sequestration going on in the higher yielding strip-till operations.

He credits new, advanced precision agriculture equipment and practices for even making this kind of work possible.

“Getting the right product at the right time in the right place, that’s what we’re working toward. Precision ag is moving us in that direction.”

Listen to my interview with Kelly here: Kelly Nelson, MU research agronomist

Nebraska Ag Tech Conference Gears Up

Don’t miss the upcoming February 9-10 NeATA conference in Grand Island, Neb., as it promises a technology extravaganza, along with other valuable topics such as precision Nitrogen management, social media, building consumer trust and much more.

The Nebraska Agricultural Technologies Association (NeATA), founded in 2001 by innovative Nebraska farmers, ranchers, agribusiness representatives and the University of Nebraska Extension, has compiled another great conference.

Need a technology makeover? How about using Nitrogen more wisely? Do you want to learn how to tell your story and share your values with consumers? How about learning a better way to select crop genetics? Check out the upcoming program, and book your trip now.

For Facebook users, find NeATA here and add them as a favorite.

Wireless Irrigation Sensor Workshops

If you irrigate and have not considered wireless sensors, the time is now to save money and improve yields.

The University of Missouri will sponsor three free breakfast workshops on wireless soil-moisture monitoring for timing irrigation. The workshops will feature representatives from six leading manufacturers of wireless sensors.

The workshops will take place Jan. 18 in Kennett, Jan. 19 in Sikeston and Jan. 20 in Columbia.

“The price of wireless technology has decreased so much in recent years that the annual cost for complete wireless systems can be as low as three to six dollars per acre,” said Joe Henggeler of MU’s Commercial Agriculture Program and workshop coordinator. “It won’t take too much extra cotton, corn or soybeans to pay for that investment.”

MU specialists and others will provide information on types of sensors, how far they can transmit signals and their usefulness to farmers. Company representatives will briefly explain their products.
Use of wireless sensors by 500 farmers in Nebraska has shown an average pump savings of $25 per acre for corn and $19 per acre for soybeans. Missouri survey results show that irrigators who use sensors have yields that are much higher than irrigators who do not use the wireless technology, Henggeler said.

Computer workstations linked to Google Earth will be available for use by farmers and company representatives. Farmers will be able to zoom to aerial views of their farms to see where to place sensors, measure the distances involved and observe if there are obstructions that may block signals.

The companies to be represented at the workshops are Campbell Scientific, Decagon Devices, Irrometer Company, John Deere Water, Onset Computer Corporation and Smartfield. Smartfield manufactures an infrared canopy temperature sensor that can determine when a crop needs to be watered.

Data is gathered 24/7 on the crop’s moisture conditions and is displayed on the computer as graphs. Almost all of the products can be set up to text-message an irrigator when a crop needs water.
Henggeler said he is pleased with the companies that will be represented at the workshops and with the personnel they will be sending. “Companies are not just sending regular sales staff but their vice presidents, product managers and other higher-echelon staff. They are eager to meet Midwestern irrigators because they feel they have products that will help them and they want to start partnerships here.”

Workshops are free of charge, but attendees are asked to preregister at http://agebb.missouri.edu/irrigate/bhconf/2011/prereg.htm.
Workshops begin 7 a.m. with a hot breakfast and conclude at 10 a.m. Dealers will be available later in the day to make site visits. Special workshop discounts will be awarded to attendees.

Dates and locations of the workshops:
-Tuesday, Jan. 18: American Legion Building, Kennett, Mo.
-Wednesday, Jan. 19: Clinton Building, Sikeston, Mo.
-Thursday, Jan. 20: MU Bradford Farm, Columbia, Mo.

For more information, see http://agebb.missouri.edu/irrigate/bhconf/2011/agenda.htm, or contact Joe Henggeler at 573- 225-7986 or henggelerj@missouri.edu.

New Publications on Auto Section Control

The Alabama Precision Ag team has compiled three good publications on automatic section control (ASC) for sprayers, planters and spreaders.

Automatic section control (ASC) has been one of the most adopted precision ag technologies in recent years. This technology has the ability to save producers on input costs by minimizing application overlap at headlands, point rows, or other odd-shaped areas of fields. Our research suggests a 2% to nearly 30% savings in fields when using ASC and guidance technology. Further, ASC can improve on-farm environmental stewardship by eliminating application in environmentally sensitive areas (e.g. grassed waterways, buffer strips, etc) or outside field boundaries. Frequent comments by those who have adopted ASC is that they want to implement on all their application technology (sprayer, planter, side-dress unit, etc.) and it reduces fatigue over long work days by automating the on and off of sections.

To help producers and others interested in ASC, the Alabama Precision Ag Team has put together 3 publications providing a general overview of ASC, needed components, and company information for planters, sprayers and spinner spreaders. Many times the expense to purchase ASC for a machine is relatively small compared to the savings it provides on crop inputs. We hope this information can help those looking to purchase ASC during this off season. Please let us know if you have any questions or we can assist in anyway.

The following provides direct links to each of these publications.

ASC for Sprayers
ASC for Planters
ASC for Spreaders

For more information, please visit www.alabamaprecisionagonline.com.

Excellent Ohio Technology and Conservation Conference

Corn and soybean growers in Ohio and surrounding states should definitely attend an excellent late-February conference to pick up great information that can improve their farm operation.

The Conservation Tillage and Technology Conference is the largest, most comprehensive program of conservation tillage techniques in the Midwest. About 60 presenters (farmers, industry professionals, and university specialists) from around the country focus on cost-saving, production management topics. The conference is broken down into tracks covering soil and water; nutrient and manure management; advanced scouting techniques; cover crops; crop management; and planters and precision agriculture.

This will be the third year for Corn University and the second year for the Soybean School, both of which cover the latest in corn and soybean management from the top researchers and industry specialists across the Midwest.

“Both programs are a main draw,” said Randall Reeder, an Ohio State University Extension agricultural engineer and an organizer of the conference. “Last year, we had about 300 to 400 in attendance at each program interested in learning the latest in crop production techniques to get the most economic yields with conservation tillage.”

Corn University will take place on Feb. 24 from 11 a.m. until 5:50 p.m. and will feature Peter Thomison, an OSU Extension corn agronomist; Bob Nielsen, a Purdue Extension corn specialist; Fred Below and Laura Overstreet, University of Illinois; and Chad Lee, University of Kentucky.

The theme will focus on achieving 300 bushels per acre using a variety of production management techniques from strip-till to nutrient management to fungicide use. Corn University is supported by Dekalb/Asgrow.

Soybean School will be held on Feb. 25 from 8:30 a.m. until 4:50 p.m. and will feature OSU Extension Specialists; Missouri farmer Kip Cullers, who set the world soybean production record this year of 160.6 bushels per acre; Shaun Casteel of Purdue University; Vince Davis of University of Illinois; and Shawn Conley, University of Wisconsin. Pioneer and Seed Consultants support Soybean School.

Other sessions taking place at the Conservation Tillage and Technology Conference include a daylong session on cover crops on Feb. 24, a daylong session on nutrient management on Feb. 25, and a half-day session on Feb. 25 on soil and water, which will include discussions of phosphorus and nitrogen management related water quality, including algal blooms.

Crop Certified Advisor credits be will offered during the Conservation Tillage and Technology Conference, including coveted nutrient management and soil and water credits.

“CCAs can get all the credits they need in both of these areas in just two days,” said Reeder.

Elwynn Taylor, Iowa State University agricultural climatologist, will be the speaker for the opening general session at 9:30 a.m. on Feb. 24.

The Conservation Tillage and Technology Conference broke an attendance record in 2010 with 966 farmers, crop consultants and industry representatives attending the event. Farmers valued the education they received at $13 per acre, roughly a $7 million value. Crop consultants placed a value on their educational experiences at $16 per acre for the land they influence.

The event will be held Feb. 24-25 at the McIntosh Center of Ohio Northern University in Ada. Sponsors include Ohio State University Extension, the Ohio Agricultural Research and Development Center, Northwest Ohio Soil and Water Conservation Districts, USDA Natural Resources Conservation Service, USDA Farm Service Agency, and the Ohio No-Till Council.

Early registration is $50 for one day or $75 for both days. At the door, registration is $60 for one day and $85 for both days. Complete registration and program information will be available after Jan. 1, 2011 at http://ctc.osu.edu.

Sensor-based Variable-Rate Application on Cotton

A new publication for cotton growers offer insight and details into sensor-based variable-rate application and equipment, written by Oklahoma State University Ag Engineer Randy Taylor and Auburn University Precision Ag Extension Specialist John Fulton, funded by Cotton Incorporated.

There are great opportunities for this technology in cotton production for varying the application of plant growth regulators, harvest aids, and nitrogen. However, the users must understand the limitations of their equipment and the sensors being used in order to maximize the benefits.

Users should understand the agronomy behind prescriptions and be comfortable with the recommendations. Familiarity with these prescriptions can allow users to fine tune them for their environment or to develop their own prescription algorithms. They should also understand their equipment and know how to tune their controller for optimum response. As with all new technologies, users should seek advice from experts and those who are already implementing sensor–based variable rate application.

Learn more here.

And check out the Oklahoma State University Precision Ag Technology webpages.

Mapping & More Resource Help Guides

Who has time to read the Owner’s Manual anymore? Well, there are the winter months for some who care to take on that light and fun reading task. If not, check out this information that Auburn University has compiled — some good info sources on their Precision Ag Blog.

How to Choose GPS/GNSS Accuracy

If you’re just starting to look at more advanced precision agriculture practices on your farm such as auto steer, take a look at your operation to see which signal is right for you. Jonathan Hall, a grad assistant at Auburn University, offers some tips on the Precision Ag Blog.

After exploring all of the equipment that can be purchased, you will find that there are three basic options for GPS accuracy:

1. A free signal, known as Wide Area Augmentation System (WAAS), provides pass-to-pass accuracy of about ±6 to 13 inches and has a potential GPS drift of ±4 to ±7 ft. WAAS is managed by the Federal Aviation Administration (FAA).

2. A “corrected” signal that requires a paid subscription can provide a pass-to-pass accuracy between ±2 and ±13 inches and has a potential GPS drift of ±1.7 to ±3 ft depending on the correction service.

3. A real-time kinematic (RTK) system that provides pass-to-pass accuracy of ±1 inch and a potential GPS drift of ±1 inch. This system requires the purchase of an RTK base station if an RTK network, such as CORS, does not already exist in your area. The Continually Operation Reference Station (CORS) network is a free RTK signal operated and monitored by the National Geodetic Survey (NGS). If CORS is not available in your area an annual subscription for a proprietary RTK network can be purchased.

It is important to keep in mind two terms relating to GPS/GNSS accuracy when evaluating signal options. Pass-to-pass accuracy is the accuracy of the GPS/GNSS receiver over a 15 minute time-frame and pertains to short-term operations such as spraying or fertilizing fields. GPS drift is the accuracy of the GPS/GNSS receiver over an extended period of time. GPS drift is more long-term and becomes important when planting or harvesting.

Check out his piece to learn more.

Check Out Nebraska Precision Farming Session Aug. 31-Sept. 2

The debut of the University of Nebraska-Lincoln Precision Ag Practicum is next week at the Ag Research and Development Center near Mead.  There is still time to enroll if you are looking for an opportunity to sharpen your Precision Agriculture skills and learn about the latest developments with this technology including irrigation applications.

This new program offered by University of Nebraska-Lincoln Extension is designed for:

  • Farm operators wishing to get more return on their precision ag dollar investment
  • Crop consultants and industry agronomists who desire to provide more accurate information and better service to their customers
  • Corporate industry and government agency personnel needing to know and understand the technology being used in today’s production agriculture.
  • Precision ag instructors

Learn more at http://ardc.unl.edu/precisionagpracticum/.

Nebraska Extension Launches Precision Ag Course

Are you navigating your precision agriculture technologies and using data to their fullest extent? A new three-day program offered by University of Nebraska-Lincoln Extension, Precision Agriculture Practicum, is designed to help participants gain practical experience using their own field data in hands-on exercises. And you’ll have the opportunity to network with each other while collaborating on team projects.

Who should attend?
- Farmer operators wishing to get more return on their precision ag dollar investment.
- Crop consultants and industry agronomists who desire to provide more accurate information and better service to their customers.
- Corporate industry and government agency personnel needing to know and understand the technology being used in today’s production agriculture.
- Precision ag instructors.

The inaugural Late Season Session is scheduled for August 31 through September 2 at the UNL Ag Research & Development Center near Mead, Neb. Curriculum includes:
• Introduction to equipment used at UNL’s Agricultural
Research and Development Center and site-specific
management capacity; introduction to case study
fields
• Entry points to GPS auto-guidance, yield monitoring
progressing to yield mapping, Google Earth, aerial
imagery, county soil survey, Web Soil Survey, recordkeeping
• GPS principles
• Yield monitoring/mapping principles; data filtering
• Variable rate technology and control systems
optimizing autosteer and swath control.
• On-the-go soil sensing
• Collection of active crop canopy sensor data
• Develop N recommendations
• Aerial and satellite imagery
• Group exercises

Winter Session is scheduled for December 2010, with date and location yet to be determined.

Learn more at http://ardc.unl.edu/precisionagpracticum/

Enrollment is limited so act soon!

More Agriculture Crop Scientists Needed

Job opportunities in crop sciences are booming. Why? More than half of all crop scientists in industry and in government jobs will retire over the next decade.

A recent report by Purdue University and the U.S. Department of Agriculture’s National Institute of Food and Agriculture predicts more than 54,000 agriculture-related job openings annually between 2010 and 2015.

“There isn’t a better business to be in right now,” says Randy Smith, a member of the Weed Science Society of America and a field research and development leader for Dow AgroSciences. “Agricultural scientists have an opportunity to feed a hungry world and to write the next chapter in the ‘Green Revolution.’ It’s a cutting-edge profession and a noble calling.”

But despite the promising employment outlook, there is a talent shortage in the applied agricultural sciences. Data from the National Academies shows 4,010 baccalaureate degrees awarded in agriculture business and management in 2007 – but only 177 in crop production. A 2008 USDA review shows Bachelor’s degrees awarded in agronomy and the crop sciences decreased by almost a third between 1984 and 2003. Several universities have dropped or consolidated programs in the agricultural sciences because of low enrollment and dwindling funds.

“The issue of talent development in the agricultural sciences is a topic of paramount concern within higher education and industry circles,” says Emilio Oyarzabal, technology development manager, Monsanto. “There are many students pursuing degrees in the marketing, sales and business side of agriculture, but the number in the applied agricultural sciences is declining steadily.”

Oyarzabal and other experts say a number of intersecting trends are contributing to the dwindling talent pool. Publicly funded graduate assistantships have evaporated. Budget cuts, retirements and competition from higher-paying industry jobs have resulted in the steady drain of agricultural sciences faculty – the very individuals responsible for recruiting and training. Grant monies are pouring into molecular biology and other basic sciences – not into applied sciences like agriculture. One possible reason:

“There is a misperception that the agricultural sciences have matured and aren’t as exciting as some of the newer, emerging sciences, such as biotechnology and molecular biology,” says Roger Gast, product development leader, Dow AgroSciences. “But nothing could be further from the truth.”

Don Wyse, Ph.D., a professor of agronomy and plant genetics and director of the Center for Natural Resources and Agricultural Management at the University of Minnesota, says changing demographics also play a role.

“The number of students raised on a farm has plummeted, and we haven’t yet figured out how to engage and recruit students from urban communities,” he says. “The link between their lives and how their food is produced is really remote at best.”

Initiatives to build a sustainable agricultural workforce

What’s the solution? The Weed Science Society of America and nearly 30 other scientific societies and agricultural industry partners have begun to collaborate on ideas for building a sustainable agricultural workforce. Some of the proposed initiatives include:

• Promoting an awareness of career opportunities in the crop sciences.
• Building a pipeline of students in middle and high schools who are interested in pursuing degrees in applied and basic agricultural sciences.
• Generating awareness of the importance of sustainable agro-ecosystems and the crucial role of the agricultural sciences in feeding a growing world population.
• Funding scholarships to attract the best students into agricultural science studies and to support applied learning programs.
• Developing innovative recruitment and training programs to attract high-quality graduate students with leadership potential.

Most agree it will take a sustained investment of resources to reverse the talent shortage. And the need has never been more critical.

“To feed a growing population, experts predict we will need to produce more food over the next 40 years than we’ve produced over the past 10,000 years combined – and with diminishing land and water resources,” says Lee Van Wychen, Ph.D., science policy director of the Weed Science Society of America. “The stakes couldn’t be higher.”

Precision Agriculture Workshop in California

UC Davis has prepared a great all-day workshop on Site-Specific Management to help increase widespread adoption of this valuable tool. It will be held July 14 in the UC Davis conference center (the day before Weed Day). Here’s a look at the program:

Workshop Goal: Present and discuss SSM concepts and applied research in order to provide the audience with a comprehensive understanding of how to identify and manage within-field variability to improve crop management.

Target Audience: Soils and crop management professionals, including UCCE Farm Advisors and Specialists, Pest Control Advisors, Certified Crop Advisers, Growers and others having an interest in improving their knowledge of SSM techniques.

Session I (8:30 AM to Noon) - Theory of SSM: Overview of concepts and techniques used to identify and manage within-field variability, Jose P. Molin, Biosystems Engineering, University of Sao Paulo, Brazil. Integrating geospatial technology with agronomic practices, GPS/GIS overview, methods for detecting soil and crop variability, use of sensors and yield monitors, creation of maps and variable rate input recommendations.

Noon to 1:00 PM – Lunch break

Session II (1:00 to 5:00 PM) - Applied research findings and examples illustrating the practical benefits of this technology

  • Use of Precision Agriculture in the West - Rob Mikkelsen, Director, Western North America IPNI
  • Site-specific methods for reclaiming salt-affected soil using electrical conductivity; and Use of Remote sensing on cotton fields for irrigation management, planning defoliation and its relationship with cotton growth and yield. Richard E. Plant, Department of Plant Sciences, UC Davis
  • Site-specific nutrient management in California orchards – identifying almond yield and fertility variability and its implication on fertility management. Patrick Brown, Department of Plant Sciences, UC Davis

3:00 to 3:15 PM – Break

  • Site-specific herbicide applications based on weed maps provide effective control. Tom Lanini, Department of Plant Sciences, UC Davis
  • Site-specific management at Bowles Farming Company – Cannon Michael, Vice President Bowles Farming Company
  • Knowledge Acquired, Intelligence Applied: Tomorrow’s Technology for Today’s CropsJason Ellsworth, Regional Technology Specialist, Wilbur-Ellis Company

5:00 PM – Adjourn

Please contact Andre Biscaro for details: asbiscaro@ucdavis.edu  (661) 974-8825

Click here to register: http://ucanr.org/sites/paica/Registration/

Click here for flier: http://ucanr.org/sites/paica/files/13632.pdf

Precision Farming Investment Tool for Cotton Growers

Cotton growers looking at precision farming investments should check out the Cotton Precision Agriculture Investment Decision Aid (CPAIDA), created by University of Tennessee Production Economics Analysis Group.

The Cotton Precision Agriculture Investment Decision Aid (CPAIDA) is a stand alone, computerized decision tool for analyzing investments in precision agriculture technologies. It was developed to meet the need for better educational information about the returns required to pay for investments in precision agriculture technologies used by cotton farmers.

Currently available “payback” modules include map- and sensor-based variable rate application of sprayer-applied chemicals, sensor-based liquid nitrogen application, and sensor-based weed control. Additional modules for calculating the cost of gathering spatial information via electrical conductivity, yield monitor, and remote sensing are also provided. A distinctive sensitivity analysis feature allows users to evaluate a variety of “what if” scenarios for these technologies based on their particular farm characteristics.

The decision aid guides users through a systematic analysis of the precision farming investment decision via a set of clickable tabs and expandable menu options. The equipment information tab allows the user to select equipment components and enter purchase price.

Default equipment complements are set for each module, and users can click on cells to change equipment manufacturers or modify prices. The farm data tab lets users personalize the decision aid based on their unique farm situation, information gathering costs, and payback parameters which can include input cost savings, lint yield gain, and reduced equipment operating and ownership costs. The profitability summary tab displays results in the form of enterprise budgets that compare cost and return estimates with and without precision farming.

A final column indicates how individual cost items vary based on the precision farming investment decision and summarizes the expected profitability from adoption of the selected equipment complement.

Finally, a sensitivity analysis tab displays the results graphically. The main figure summarizes the profitability of the proposed equipment complement and provides an estimate of the payback period in years. Here, users can change key cost and return parameters, such as farm size or input savings, and evaluate how changes in these values influence the profitability of the investment decision.

The CPAIDA decision aid is also available at http://economics.ag.utk.edu/cpaida.html. Copies of CPAIDA on a CD ROM may also be obtained by writing James Larson, Department of Agricultural and Resource Economics, 2621 Morgan Circle, 302 Morgan Hall, Knoxville, TN 37996. This decision aid was funded by Cotton Incorporated.

Ag Camera on Space Station to Watch Crops

University of North Dakota students and faculty designed and built the ISSAC camera to watch growing crops from space beginning in 2011.

“ISSAC is a space-related research project that will result in the delivery of direct benefits from space to the general public,” said Doug Olsen, ISSAC project manager. “The ISSAC project is in the midst of developing an upgrade to its camera sensor, which is expected to be launched in April 2011. It will resume operations during the 2011 growing season.”

ISSAC is designed to take frequent images, in visible and infrared light, of vegetated areas on the Earth, principally of growing crops, rangeland, grasslands, forests, and wetlands in the northern Great Plains and Rocky Mountain regions of the United States. Images will be delivered within two days directly to requesting farmers, ranchers, foresters, natural resource managers and tribal officials to help improve their environmental stewardship of the land. Images will also be shared with educators for classroom use.

The system allows users to select specific geographical areas of interest over which to request collection of imagery in both red and near-infrared bandpasses, and at medium-high spatial resolution. Farmers using variable-rate application and other precision agriculture techniques will be able to dynamically delineate management zones as the crop vegetation canopy changes during the growing season; this can result in more effective use of fertilizer and other chemical inputs and reduce negative environmental effects.

“The UND interdisciplinary effort that has produced this camera is a remarkable story,” said UND President Robert O. Kelley. “Faculty and students from several colleges and centers on campus have produced an instrument that will analyze the composition of agricultural and other natural resources on the surface of the earth from the International Space Station.”

“The consolidation of multiple technologies into a single instrument will add tremendous economic value to the agricultural industry in North Dakota and around the world,” Kelley said. “UND and NASA have forged a very productive partnership in this initiative.”

ISSAC is operated from the Science Operations Center (SOC) on the UND campus, staffed by students from across the campus, including from the John D. Odegard School of Aerospace Sciences and the School of Engineering and Mines. From the SOC, students will send commands to ISSAC to take images and transmit them to SOC, where they’ll be processed and delivered to end users. Images captured by the camera will be made available to the public through UMAC’s Web page (see http://www.umac.org/).