Wednesday, July 19, 2017

A Look at Water in South Central Florida

If you stay abreast of water media you may be familiar with Dr. Mary Lusk from handy insight on reclaimed water in Florida and topical research on septic system pollutants. You may also recognize Dr. Lusk as the UF/IFAS Water Regional Specialized Agent for the South Central District. This spring during the Urban Landscape Summit, Dr. Lusk agreed to speak with IrriGator for our on-going series featuring Water RSAs and their districts.


What drew you to the Water RSA position?
ML: I really like that it combines science with communication to the public. To me Extension is just the perfect job because you’re taking scientific information and you’re conveying that to the public. I love that combination. It’s the best of all worlds to me: science and communication.

What are the critical water issues in the South Central District?
ML: My district is a mixed bag. We definitely have a lot of urban land with the Tampa/St. Pete area, and the Sarasota, Port Charlotte and Naples areas. We also have huge amounts of ag in this district. We have strawberry and vegetable row crops in the Hillsborough County area - all the row crops in the Immokalee area. I really have to wear two hats between the urban and ag world.

If you had to focus on one issue as being most important, it’s probably nutrient storage. We have a lot of water bodies that are impaired because of excess nutrients. What I focus a lot on is ways to get the message out of things we can do to reduce our nutrient footprint, reduce that transport of nutrients from land, whether it’s urban or agricultural, to the water.

Do you consider your first year as an RSA a success?
ML: I feel like this past year has been a success. I’ve seen firsthand the issues. I know who the players are. I’ve met so many people at agencies like DEP, FDACS, the water management districts. I’ve learned who the people are and what they’re working on, what’s important to them and by default learned what’s important to Florida. Now that I have this information I feel that I’m ready to go, ready to start tackling some of those problems.

How do you feel having a digital presence on Twitter benefits you and your work?
ML: I really was looking for ways to just expand my reach, reach those folks that I don’t see face to face, perhaps I’ve never met, but folks who are out there looking for this information. Expand my reach. That to me is great. The more people we can get in touch with, all the better.


Read about Water RSAs Charles Barrett, James Fletcher and Lisa Krimsky.

Tuesday, July 11, 2017

Next Stop: Spokane, WA

Next week students, researchers and industry members from across the globe will gather in Spokane, WA, for ASABE’s Annual International Meeting. I will be attending as well, once again collaborating with ASABE to bring the digital audience inside the goings-on during the event’s four days. Here’s a preview of some of what will happen next week.


Gainesville Presente
There will be a sizeable UF contingent in Spokane. UF-ABE researchers will be presenting in a host of technical sessions from Monday to Wednesday. Our ABE graduate students are exhibiting work in poster sessions ranging from Natural Resources and Environmental Systems to Machinery Systems. Several will also present in technical sessions, including the imminently graduating Natalie Nelson (PhD) who will also moderate the Leveraging Big Data session. 

How heated was Robotics Design Competition at AIM 2016? Take a look!

The UF-ABE robotics team returns to AIM to put their precision ag skills to the test in the robotics competition. In addition, Dr. Michael Dukes, CLCE Director and UF/IFAS irrigation specialist will be officially inducted as a 2017 ASABE Fellow in Spokane.


#ASABEaim17
One of the more exciting aspects of AIM is the professional development opportunities afforded to students. I’ll be working to showcase as many of those as I can – namely in the design competitions like Fountain Wars, where student teams complete tasks with water and engineering (this year beach balls and eggs are afoot) and Robotics Design, where autonomous robots simulate tasks with props on a board (for 2017, the raspberry farm is where we lay our scene). I’ll also move among the poster and technical sessions to highlight exciting graduate student research.

Tune In
Get an inside look at AIM events with IrriGator and ASABE on Twitter on the #ASABEaim17 tag. And if you’re attending AIM make sure to download the event app (iOs or Android) to keep your schedule organized. See you in Spokane! 

Tuesday, June 20, 2017

A UF/IFAS Water School Near You

Water Schools are an expanding priority for UF/IFAS. The concept was originally conceived in Polk County in the 90s and then caught on throughout neighboring Southwest FL. Currently there are plans to develop water schools in Marion, Brevard, Citrus and Lake/Sumter Counties. On June 27th the Lake/Sumter Water School is set to debut. Event co-organizer Lloyd Singleton (of Sumter County Extension) recently communicated with IrriGator to offer further insight into the Lake/Sumter County effort.

Lloyd Singleton (left) and Steve Turnipseed inspect a FL native (image FANN)
What do you feel is the most pressing water issue in your area of FL?
LS: Rapid planned residential development in the south part of Lake County (Clermont, Minneola, Groveland) and the north part of Sumter County (The Villages) are increasing the demands for water. Lots of new lawns and landscapes with irrigation, so water quantity is of great concern. Given its namesake, Lake County has water quality concerns for the beautiful chains of lakes in the region.

How often are water schools conducted in your counties?
LS: We conducted a water school for local community leaders last summer (2016), and this is our first one open to the general public. One of the outcomes of that water school, where we used Dr. Borisova’s evaluation, was that they suggested the same information be provided to the general public. So that’s what we decided to do this summer. Some of the information may be over the heads of the general public, but I’m not a big believer in dumbing stuff down. Sometimes you need to challenge critical thinking with a little bit of higher level information. 

We are grateful to our sponsors, the Lake County Soil & Water Conservation District and the Southwest Florida Water Management District for providing the resources to share this event with the general public. If it is well received and the word spreads, I’m confident we can do more.

The water school program includes quite an array of expertise, who is the intended audience?
LS: The program is open to anyone; we are seeing interest from a wide variety of folks, including Master Gardeners, the environmentally-minded, early adopters of all sorts. We’ve assembled experts in numerous fields related to water, ready to share their expertise and answer your questions about this precious, limited natural resource.

There is a water school goodie bag to entice attendees. What kind of useful items are included?
LS: The gift bag itself is a reusable grocery bag in beautiful UF blue, labeled Water School. We will also provide a flash drive with all of the presenter’s presentations included as .pdfs, a personal water bottle, hose end spray nozzle, a fertilizer guide, bookmark, and lots of Florida-Friendly Landscaping information is included, too.

All of the above and information straight from the experts
Co-organized by Juanita Popenoe, PhD., and Lloyd Singleton, the Lake/Sumter County Water School takes place Tuesday, June 27th. Register here.

Tuesday, June 6, 2017

Just in Time: Center for Landscape Conservation and Ecology Releases a Drought Toolkit

Recently the Center for Landscape Conservation and Ecology (CLCE) released an information package including some of the best IFAS expertise on water-use in a drought context. With municipalities and water management districts in Central and Southwest Florida declaring Phase III water restrictions, this is timely insight to have on hand. Prior to the info release Center Director Dr. Michael Dukes granted IrriGator a brief interview to discuss the CLCE’s role in drought and easy ways to address water-waste in your irrigation system.

What does CLCE hope to achieve with the release of all this drought relevant information/insight?
MD: We’re really trying to promoting awareness of the drought. It has been ten years since we’ve had a drought here this widespread. There have been many pockets of dryness (South Florida for example) in between. But really to promote awareness and get people thinking about that our water resources are limited.
U.S. Drought Monitor stats for FL as of late May. (via USDM)
What role do you feel IFAS and CLCE can play in this kind of context?
MD: Our role right now is the awareness part. What can you do about it. And if you’re faced with drought what are some of your options. But I think the building of the awareness part is one of the most important parts because every day when we’re not in a drought we’re conducting research and education on best practices, use of smart irrigation technologies, efficient irrigation, Florida-Friendly Landscaping – we’re doing all those things year round. If you do implement these things you’ll be better prepared for a drought.

This season I know many of the water management districts have stepped up their messaging about drought. Are there opportunities for collaboration with these entities?
MD: Short answer is I think so. The longer answer is there is not a formal mechanism for it. We don’t have a regular meeting with all five water management districts. However, we do have informal relationships and once we get our drought information package together St. Johns River Water Management District has asked us for it. We’ll help them by providing the best science that we have.
What are some easy, fast ways to implement best practices to reduce water use in a drought context?
MD: Well, the irony of a drought is you need to water. It’s not the best time to cut your water back. If you have a maintained landscape you’re going to be watering it right now, probably quite a bit. But the practices, the research and education that we conduct all will set you up better for a drought. But it’s stuff you have to do before you get there. Putting in a smart controller right now is probably not going to save any water unless you’re ridiculously overwatering. But from the utility data that we’ve seen people tend to underwater a little bit during this time of year. So people are probably struggling to put enough water on to maintain an aesthetic value of their landscape. The need of the landscapes are very high right now.

The low hanging fruit from an irrigation standpoint, drought or not: adjust the throw on your sprinklers so you’re not watering the road, fix breaks, and check for other obvious issues like clogged heads. The more advanced stuff like smart controllers, they may not save you water right now, certainly rain sensors won’t since it’s not raining. But these things will save you water once we do get to that rainy season.

Dive into the CLCE’s Drought Toolkit here.

Tuesday, May 23, 2017

Making Sense of Landscape Fertilizer Ordinances in Florida

Water quality is a hot topic in Florida. If you follow water media you’ll know that in the wake of 2016’s algal blooms along some of the state’s finest coastlines, putting policy in place to lessen the possibility of future recurrences was a top priority during the Legislative Session. During debates therein everything from Ag, to septic tanks to landscape fertilizer were mentioned as factors contributing to poor water quality. While IFAS research suggests landscape fertilizer does not play as significant a role as its often assigned, the reality is that much of the state has crafted ordinances on when it should/should not be applied (some vigorously contested).

What part of Florida has enacted which landscape fertilizer ordinance? Good question! Enter turfgrass specialist Dr. J. Bryan Unruh. Earlier this year Dr. Unruh tweeted a preview of a mobile website/app he is developing about landscape fertilizer ordinances throughout Florida. IrriGator caught up with Dr. Unruh during the recent Urban Landscape Summit and he was kind enough to answer a few questions about this exciting project.

How did the idea for the fertilizer ordinance app come about?
JBU: Working with the landscape industry in Florida – with now over 100 landscape ordinances, there’s a lot of confusion, especially in the larger urban areas (Orlando and Tampa) where you have multiple counties. So the idea was conceived that if you have a GPS-enabled smart phone you can hit a button and it will tell you exactly what ordinance is in place at that particular point. Nobody has really kept a very accurate compilation of all of these ordinances. My masters student, Christopher Ryan, through some of his work had created ArcGIS maps that show where all these ordinances are. So we’re merging this information into a handy app.
A screenshot preview of app interface (via Dr. Unruh)

Who is the intended audience for this product?
JBU: The primary audience would be the landscape industry. There’s an estimated 70,000 fertilizer applicators out there. Extension faculty as well might find it useful. I don’t presume to think an average homeowner would purchase this app, but they might.

Is this a stand-alone app or is it web-based?
JBU: We’re using app and mobile-website interchangeably. A mobile-website links into the database that is housed on a server. Whereas an app, your updates are tied to app stores. If they don’t push down an update as soon as we would like, then we have a problem.

There is a functional component, too. As we’ve compiled these databases, a lot of it is reactive. You’ll hear about an ordinance and then you have to go vet it out. But with 70,000 landscapers out there, this app has functionality in it where an industry person may hear about something happening in their municipality or their county, they can actually upload information into the tool that then comes back to us and then we can vet for accuracy. They won’t be able to change the database or maps, but they can provide us their ears on the ground.

Will this be a free service?
JBU: The app is a for sale product. You pay a fee for access. We have partial funding from Center for Landscape Conservation and Ecology, FNGLA, and internal program funds. It may not have thousands and thousands of users, but I think that those users that do have it will find it to be very helpful.
Detailed ordinance info at your fingertips (via Dr. Unruh)
The Florida Fertilizer Ordinances web app is now available for use on mobile devices. Access it here.

Wednesday, May 10, 2017

Water Need and Water Use in Landscape Irrigation

By Michael Dukes

“Turf grasses need irrigation systems. Some grasses listed as Florida-Friendly need tremendous volumes of water. The homeowner also needs to fertilize and quickly address diseases and pests that will be present. Despite the homeowner's best efforts, all or part of the turf will need to be replaced every 4 to 5 years.”
- email from master gardener

A Need Benchmark
People often work under the assumption that turfgrass needs a lot of water. What is the definition of a lot? Normally, turfgrass is irrigated far more than it needs to be and this reinforces the perception that it needs a lot. There are lots of misconceptions about how much is used and how much is needed. If people knew how much is really needed, there would be a benchmark and you would have an idea of where you are relative to what is needed.

Michael Dukes and Bernard Cardenas in the research plots
An example is the comparison homes treatment (no technology, monitor-only) used in our Orange County smart irrigation study. We’re in our 6th year of data collection. Over that whole time period, the average application for those homes has been more than an inch per week – that’s over 52 inches a year, no matter how much rainfall. And we’re getting about 40+ inches of rainfall in a year. That’s 90 inches of water being applied to the landscape. But ET (evapotranspiration) of turfgrass is only maybe 30 inches in Orlando.

A properly installed weather-based irrigation controller
Timing is everything - for turfgrass in particular, with shallow root zones. In theory, if we get 40 inches of rainfall and ET is 30 inches, the amount of rainfall far exceeds the amount of water that plant needs. But it’s not timed perfectly. There are dry times and there are times when you get excess water. That’s where irrigation comes in. If you time that irrigation perfectly you’re in the mid-20 inches of water needed.

Ideally if you’re applying at the right time at the right amount, which a smart irrigation controller allows you to do automatically, you should be in that mid-20 inches of water applied. The comparison home treatments are applying over 50 inches. That’s why smart technology is a viable way of getting irrigation in the right ball park. They are not perfect, but when the problem is 2x and you have a solution that gets you to 1.3x or 1.5x you’ve made a huge dramatic improvement by doing one thing.

A Use Percentage
Image via Ewing
I often am asked how much water is used for irrigation, usually referring to single family homes. Often we see a mysteriously even number of 50% cited. The truth is that irrigation water use varies in time and space. In areas with more irrigation systems, there will necessarily be more irrigation water use. In drier years, irrigation water use will be higher. I believe the 50% number is a very convenient number to cite but here’s what we know based on data from Florida.

The reality is that in a given utility there will be a spectrum of users with most not over irrigating or perhaps irrigating at all. In Mackenzie Boyer’s recent work in Southwest FL we showed this for the Tampa Bay region, (Mining for water: Using billing data to characterize residential irrigation demand). That said, other utilities in the east and southeast part of the state have higher irrigation demand since their conservation programs typically aren’t as developed as in the SW region.


Additional research informing on water-use estimates:
Romero & Dukes (2016): A Method to Estimate Residential Irrigation from Potable Meter Data – Metered data from Orlando (1,781 homes) showed that irrigation accounted for 64% of total use.  The first paragraph also gives a good summary of several other studies that reported Florida residential irrigation use (ranging from 25-75% of total use).

Boyer et. al (2014): Irrigation Conservation of Florida-Friendly Landscaping Based on Water Billing Data – Again, the introduction summarizes key statistics from Florida studies.  For example, Haley et al. (2007) estimated 64% in central Florida, and Romero and Dukes (2014) estimated 32-63% in central Florida.

A good resource for how much to water your landscape depending on region in Florida, time of year and irrigation system can be found here.

Tuesday, May 2, 2017

Charles Barrett and Understanding the Importance of Water in Florida

This month marks a year for Dr. Charles Barrett as water regional specialized agent (RSA) for UF/IFAS Northeast District. This district spans Jacksonville, the Suwannee River Valley and the Nature Coast. I caught up with him during Urban Landscape Summit 2017 and he was kind enough to speak with IrriGator about his RSA experience thus far.

Dr. Charles Barrett - Regional Specialized Agent, water resources
What attracted you to the Water RSA position?
CB: I did my PhD research in agriculture (ag) irrigation and best management practices for water and nutrient management. That’s what got me interested in it. And being a Florida resident my whole life I understand the importance of water to Florida. If there’s something I can do to help out I’m excited to do that.

What are the most critical water issues in your district?
CB: We have some new basin management action plans coming into place. My role with IFAS extension is education about what this means for our residents in the district. It’s a very rural area, so I'm getting the message out to farmers and small communities so that they understand what the implication of a basin management action plan is and how they can get prepared for it.

Dr. Barrett (middle) presents at an irrigation demo
Also, out of the 31 listed Outstanding Florida Springs (OFS), we have 17 of them in my district. That’s a large majority. OFS in the new water bill got special attention so if you have an OFS in your basin management action plan you have even more stuff you have to pay attention to. There’s a lot coming down the pike and I feel there’s not a whole lot of education going on about that. This is where we step in and give the science and information. I feel we have to do a much better job of getting information out to people.

Being almost a year into this position are you satisfied with how the work is coming along?
CB: I feel like I’m starting to get the lay of the land which is the most critical part in any job. There was nobody before me to tell me what I needed to do - which is exciting but sometimes a challenge because you’re kind of making up your own road map as you go. You’ve got to do a needs assessment and figure out where the big fires are and start working on putting those fires out first. In my area, being that it’s predominantly ag, a lot of the identification of the nutrient loads in the rivers and in the springs has been identified as ag-related. That’s the big fire right now, to get those guys to understand how important best management practices are. How it’s not only important to enroll, but the rule has now changed that you have to verify your implementation of it. That means good record-keeping. It’s a lot of education on that.

Read Dr. Barrett's article on soil sensors & irrigation scheduling
If I can say anything is a success, it’s just making relationships right now – working with the water management district, working with FDACS, working with DEP and the Suwannee River Partnership has been huge up there. We meet regularly and we talk about these issues. We have a really tight-knit group. So I think the biggest success so far is that I’ve been able to get on board with those guys and to work hand-in-hand with the guys that are trying to get this information out. We’re all working together. I’d like to see more success on the side of getting things done, but that comes with time.

Before I met you I knew you from Twitter. Can you talk about why you joined Twitter and some benefits of maintaining a digital presence?
CB: I created an account on Twitter right when I first started as a water RSA. I went through the professional development academy, or new agent training, and it was brought to my attention how that media stream could be useful in your career. I figured like-minded people might find some of the stuff that I find interesting interesting to them. That’s why I got on it. I didn’t think anybody was looking at it! I see you on there with IrriGator and you’re always picking up stuff that I miss so it’s awesome. If I find something, or you guys find something, we can all share it along. I thought I’d never be on Twitter, I’m not a social media type of person. But it’s kind of cool.


Read profiles on Water RSAs James Fletcher and Dr. Lisa Krimsky.