Showing posts with label weather-based irrigation controllers. Show all posts
Showing posts with label weather-based irrigation controllers. Show all posts

Tuesday, April 18, 2017

From Field Technician to Hydrologist

Last week Eliza Breder successfully defended her MSc thesis on irrigation patterns as influenced by smart irrigation technology. Ms. Breder first joined ABE and the Dukes research group as a field technician in 2013. We worked together on everything from frost protection irrigation, distribution uniformity sprinkler nozzle trials, and the Orange County-based smart irrigation study which would eventually move her out of the field and back into the classroom. As she prepares for the next chapter in her water-use focused career, Ms. Breder agreed to speak with IrriGator about her ABE experience.

Eliza Breder - Master of Science and future Hydrologist
What has been the focus of your research as a Masters student with the Dukes group?
EB: I’ve worked on the OCU (Orange County Utilities) project where we look at smart irrigation technology and the water savings from different technologies and optimized treatments. Specifically what I’ve looked at with that data is the hourly irrigation patterns of each treatment. This means looking at the irrigation applied over the week, in addition to the irrigation applied per event, and the number of events that occur per week on average for each treatment.  
Residential soil moisture sensor

Something else that we look at that ties into these objectives is the comparison homes. These homes have no technology and are not exempt from watering restrictions. They still irrigate once or twice a week depending on the time of the year. That data has been separated by even and odd address and time period to see whether or not they violate watering restrictions. We’ve found that about 20% violate two day restrictions and about 40% violate one day restrictions. What’s interesting about that is they’re supposed to irrigate on specific days of the week, so violation means they may be irrigating more, or just irrigating on the wrong days.

Where all this really ties together is that the smart irrigation technology overall applies less weekly irrigation on average than the comparison homes. However, some of the technologies will irrigate more frequently over the week, this is true for the weather based timers. The soil moisture sensor homes tend to irrigate at the same frequency as comparison, but not as much water is applied.  
Stand alone weather-based irrigation controller

For high irrigators (comparison homes), while some of them do abide by watering restrictions they still apply a lot of irrigation. Maybe there is a better solution for this type of homeowner.

Is water-use research something you were always interested in as an undergrad?
EB: Towards the end of undergrad I was interested in learning more about water use and water conservation. This was a really great opportunity for me, especially for work in Florida. This is an ag-based state, especially in North Florida. We also have a lot of really important water resources here.

My general interest has always been about the environment and water. I went abroad for a year in Brazil and I had a really interesting internship. It wasn’t necessarily about irrigation but it was about water supply. It was under a different context - different country, different issues. But it became important to me to learn about what’s going on with water where I’m from.  

Do you feel your experience as a graduate student has prepared you for the working world?
EB: Yes. Coming across a problem in my data, or in my research, or trying to understand what the objective is - trying to make sure it makes sense, but also answering to someone. Answering to Orange County or Dr. Dukes to make sure it’s in line with their vision and making that work in the statistics and the code I’ve written for the data - so problem solving definitely.

Field days - Eliza Breder calibrates frost protection impact spray heads
Also I can manage data. I can use R and Excel and this was a big selling point. Even if it’s new data that I’m not familiar with, the ability to learn new things and do it on your own was extremely valuable when applying for jobs.

What can you tell us about the next chapter of your water-use research career?
EB: I’ve accepted a job offer to work as a hydrologist with Suwannee River Water Management District (SRWMD). There are general hydrology and irrigation principles but sometimes it’s helpful to know about specific issues in a specific area – the way groundwater resources work and the way the industry deals with it. It was advantageous for me to stay in the same area given my knowledge.

Maria Zamora and Eliza Breder at strawberry plot in Citra
On a personal level, while I mainly deal with irrigation data, the SRWMD area does have a lot of agriculture. I’m looking forward to learning more about hydrology in that area and going out for field work visits to see how they actually collect the data I’ll be managing. I look at it as an overall learning experience - a place where I can bring the skills that I have to use to get things done.   

You created and maintained a digital presence on Twitter as a graduate student. Can you speak to why and if you’ll continue to develop this as a professional?
EB: It was a great move for getting my name out and learning a little bit about what other people are doing. It was fun even tweeting about some of the challenges I had overcome in my research. It got me some attention. And the people that are looking at you are people you might be interested in learning about, or brands or water management districts. It’s great for getting the word out about yourself and for expressing your professional interests, and also for learning about colleagues, or potential colleagues.

Eliza on catch can detail (image: Gainesville Sun)
I’ll still be active on it to talk about current water resource issues or great things we’re doing at the district or something interesting that happened in the field. It’s definitely a great tool.

The Dukes program consistently develops/prepares top-notch water-use research personnel. What would you attribute this to?
EB: I’ve definitely improved on my skills being here. There is an element where Dr. Dukes has this expectation that you’ll be able to figure it out for yourself, that you’re capable of putting things together on your own. He doesn’t need to hold your hand. You become independent in that way. Sometimes if you can figure one thing out it’s sort of a domino effect. The sky is the limit. For me that was R. When I first started working with R in different classes it was definitely a challenge. But I got over that peak and that was my own motivation. You have to be self-motivated.

Dukes research team 
Of course, there is also taking good classes. And Dr. Dukes making sure you have a solid literature review, and that we have solid objectives, and a solid project behind you. For me, coming in with a project already in progress – there was a huge management side of it, but there was a lot of data there and not a lot of waiting. Ultimately, he expects you to be independent and a go-getter, and in that space I was able to figure a lot out for myself, and what did and did not work, which was a really great learning experience.

Eliza Breder and Sara Wynn help us learn irrigation basics

Tuesday, November 15, 2016

Smarten Up for 2017: A SWAT Training in Southwest Florida

Last week the Dukes research group conducted its third smart irrigation technology training of 2016. This collaboration with Tampa Bay Water and Florida Irrigation Society packed the Brooker Creek Preserve’s auditorium with area contractors, municipal reps, Extension faculty and local water management district staff eager to learn about water-saving technology.  


Best Practices
Following proper design and regular system maintenance, irrigation best practices also include using smart water application technology to avoid unnecessary irrigation. 
During the training, presenters covered types of smart technology and proper installation and programming. They also drew lessons from recent field experiences to underscore the importance of correct wiring to maximize device effectiveness.

Hands-on station with water-use expert Bernard Cardenas (courtesy: Dave Bracciano)
Frank Galdo explains it all
Guest presenter Frank Galdo of Pasco County Utilities (pictured above) stepped in during the latter section to discuss how two types of sensors (rain and soil moisture) can be used on one irrigation timer – a scenario his team encountered and diagnosed this summer.

In the Clouds
Seven vendors were also in attendance last week. Despite the growing popularity of the cloud-based irrigation timer sector, trainers kept the focus on soil moisture sensor and weather-based irrigation controller basics.

Fresh from Denver: team Rachio talks cloud-based tech
Vendors, however, had plenty to present on their unique interpretations of cloud-based irrigation technology – which allows for WiFi-enabled weather-based programming as well as remote access to your timer from any mobile device.

...without whom none of this would be possible
Looking Ahead
For anyone attending this year’s Irrigation Show and Education Conference (next month in Las Vegas), you know that smart water technology is continually improving. And the Dukes research team will continue to train irrigation professionals throughout Florida on these proven water-saving devices. See you in the new year!

Wednesday, August 31, 2016

Smart Moves to Save Water in Orange County, Florida

By Michael Dukes

It’s fitting that I compose this post when rain has delayed my afternoon plans to mow and reminded me that I can turn off my irrigation timer until the weather conditions dry out. That said, for most people it isn't convenient to monitor their timer on a daily basis. New irrigation technology affords us the option of automated, weather-based irrigation.

Properly installed weather-based irrigation controller
Real World Testing
For several years now, we’ve been putting these new irrigation controllers to the test in Orange County. Last year we highlighted the progress of the project discussing the success of the technology with irrigation reductions. 

OCU study data manager/masters student Eliza Breder and the Dukes research group
This year we’re marking the publication of the project’s final report via the Water Research FoundationIn a nutshell, using smart irrigation technology we have measured irrigation reductions of 18% to 42% over more than a three year period. 

Soil moisture sensor in use in Orange County research sites
Seal of Approval
Recently the Orange County Board of County Commissioners passed a resolution in support of smart irrigation controllers reducing excessive irrigation (i.e. saving water) based on our study. The Board recognizes that fast growing areas of the county will present a tremendous demand on the water supply infrastructure. 


New developments afoot: water supply must meet new demand 
Incentivizing these technologies is a cost effective way to reduce water demand. Further, the majority of customers using these devices during the study were satisfied or extremely satisfied.

Wither Watering Restrictions?
What does this mean for Orange County residents? In our study, smart controllers reduced irrigation when exempted from standard watering restrictionsBased on this success, plans are in the works to seek an exemption from watering restrictions for irrigation systems using smart irrigation technology. 

Some soil moisture sensor options: the potential for water-savings is boundless
Will these changes result in a full-fledged rebate program to encourage wide adoption of smart irrigation devices? Watch this space and stay tuned!

Wednesday, August 26, 2015

From Data to Action: Orange County and Smart Irrigation Technology

Following a little over three years of quiet research, the UF-managed smart irrigation study based in Orange County recently enjoyed some time in the spotlight. In July, Orange County Utilities (OCU), confident in the water saving data documented during the project’s lifespan, revealed the next steps for promoting water efficient technology to Central Florida.

Textbook installation of a stand-alone weather-based irrigation controller
A Study Intro
The smart irrigation technology study in Orange County is assessing the water saving potential of two devices in real-world locations:

a) weather-based (ET) irrigation controllers
b) soil moisture sensors (SMS)

167 homes around the county participate in the research - outfitted with one of these devices and a data-logging water meter. Treatments vary by soil type (flatwood or sand) and whether or not UF personnel engaged the study participant with educational material for using the device properly. A group of homes with time-based irrigation systems scattered among all the research areas is used as a control.

Figure 1: water use among treatments and different soil types (courtesy OCU)
The Good News
The study numbers are in (Figure 1) and the water savings are clear, with flatwood soil homes showing less irrigation than sandy homes, and participants that engaged UF personnel showing better savings all around. Michael Dukes, lead researcher and professor of Agricultural and Biological Engineering, said: “The original objectives were to determine if smart controllers in Orange County could save water. We have shown that they do. Also, most of the customers with this technology indicate they are satisfied or very satisfied with it.”

Textbook soil moisture sensor installation
Is there a difference between the savings achieved by the soil sensor and the weather-based timer? According to researcher/graduate student Eliza Breder the smart irrigation technologies that have site specific programming result in greater water savings. “The soil moisture sensors with site specific programming, on average, across all locations, are shown to apply the least amount of irrigation over the three year study when compared to all other treatments,” Ms. Breder said.

The Future
According to the Orlando Sentinel, Orange County Utilities is working with the St. Johns River Water Management District to establish a water restriction variance for homeowners installing smart irrigation devices. What will this mean? If you have a weather-based timer or soil moisture sensor scheduling your irrigation for you, one or two day a week restrictions no longer apply.
A smart irrigation technology workshop slated for September
What else is in the works? Mr. Dukes would like to see these water efficient devices integrated into housing developments from inception.

“Our monitoring data show average savings 12-45% using these devices for customers that have been verified as having potential savings,” said Mr. Dukes. “We’d like to investigate whether these devices have water savings on a wide scale, say development wide. We are in discussions currently to gauge builder interest in using these technologies widely.”

Monday, July 20, 2015

Taking Its Talents North: Smartirrigation Turf App Under Study in Gainesville

Following successful trials in South Florida that established its water saving potential at between 30 and 40 percent, the Smartirrigation turf app begins testing on the UF campus in Gainesville this week. 

Part of a suite of weather data-informed irrigation apps, the turf app was released in fall 2013. The app works with user location and irrigation system specifics to recommend an appropriate irrigation schedule while also sending notifications about incoming or recent rain events. 

Turf app scheduling will be compared to that of weather-based irrigation controllers 
Trials in 2014 at a test site on the IFAS Tropical REC campus in Homestead compared app scheduling to that of widely available time-based and weather-based controllers. The app demonstrated water savings between 30 and 40 percent.

Dr. Kati Migliaccio is leading the North Florida turf app trial
Why North FL?
“The differences in North Florida and South Florida have to do with rainfall and temperature,” said lead researcher Kati Migliaccio, associate professor of Agricultural and Biological Engineering (ABE). “The variation in temperature is greater in North Florida, and the variation in precipitation is greater in South Florida.”

The turf app’s water saving potential will also be compared to timers controlled by three different brands of soil moisture sensors.

Right in the root zone: installing a soil moisture sensor at the research site
Study Site
The app trial is taking place on an irrigation plot on the UF campus. In preparation for this study, the Bermudagrass in the plot was rehabilitated during most of 2014. More recently, the research team has replaced older, worn parts on the irrigation system there and determined the distribution uniformity (DU) of the sprinkler heads in use in the plot.

Dr. Jason Kruse leads the Bermudagrass sprig application during summer 2014
Day to day research tasks will be executed by ABE graduate student Ian Hahus. “In contrast to my other work related to large-scale water conservation through water supply with municipalities, this project is more about what each homeowner can do to manage their water,” Mr. Hahus said. “All those little incremental savings can add up to big changes hopefully.”

Graduate student Ian Hahus assists with setting up catch can grids during DU testing
Try It Yourself
While the Smartirrigation turf app proves its mettle under trial in Gainesville, it’s also available now for download on Android and iOS devices. Any Florida or Georgia resident can use this informative guide to learn about the app and begin making weather-based turf watering decisions today.

“A lot of times when you’re setting a controller you aren’t exactly sure how many minutes to program,” Ms. Migliaccio said. “What the app does is it tells you based on evapotranspiration how many minutes you should set your controller to get the best water-use efficiency out of that water and also to keep your plants healthy.”