Jul 23, 2014
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Monitoring Pasture Condition? UNL Extension has an App for That!

July 4, 2014
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Ranchers are accustomed to checking cattle, wells, and mineral supplements to keep tabs on their operation. But what about the grass?

Monitoring the condition of pastures is just as important, say UNL Extension experts. And now there's an app for that.

UNL Extension has released a mobile application called "GrassSnap" that makes the monitoring process easier. The new app

  • takes ranchers through the monitoring steps;
  • stamps the photographs with the pasture name, GPS location, date, and direction looking;
  • records comments about each pasture;
  • stores the photographs and data in pasture folders; and
  • can quickly download the information to a computer.


The new app is available for Apple and Android operating systems, both for smart phones and tablets. Download GrassSnap for Apple versions at the iTune Store, and Google Play for Android devices.

Reasons to monitor
There are many reasons to monitor rangeland and pastures, Bethany Johnston, UNL Extension Educator, said. She said all managers should monitor to evaluate changes and progress towards their management goals. Others need to document pasture health for carbon credits, wildlife habitat, or compliance with government programs such as the NRCS Conservation Security Program (CSP), which includes a grazing monitoring enhancement opportunity for participating landowners.

"Photo-point and photo-plot monitoring is one of the easier, more repeatable ways to get qualitative info about how pasture looks right now."

A mantra of the method is "look out and look down." First, "look out" and capture a photo-point landscape view. Next, establish a line transact in a given direction, then "look down" at the ground at regular intervals along this line to capture photo-plot views.

Looking down at the ground is likely to reveal a whole host of rangeland health indicators, such as the amount of litter on the soil surface, types of vegetation, and condition of the plants.

"We want to get them to look out (at a pasture) and see what that view looks like - but also drive or walk out into it and look down and see what you see," said Cindy Tusler, former Extension Educator who helped develop the GrassSnap app.

Monitoring pasture condition is not a one-size-fits-all process
"Collect information that works for you," said Johnston. "Your monitoring system can be simple, like a moped, or a higher-end version, like a Cadillac. The ‘moped' version could be as simple as a photo point and a photo plot. More complex monitoring will bring more detailed data. For example, we set up a ‘Cadillac' version for a rancher complete with a transect line, spaced photo plots, a perspective pole, and a data sheet to record our information." GrassSnap is flexible enough to capture data on simple or more complex monitoring systems.

It is recommended that photographs be taken at least once a year, after the growing season when plants have matured. The goal of the new app is to make this process quick, repeatable, and easy.

The app employs Geographical Positioning System (GPS) to make it easier to return to the same spot every year. Once at the site located by a permanent field marker, the app user can use the "overlay" or a ghost image (from the first year) on the screen. This allows the user to hold up the phone or tablet, then move the device until the ghost image lines up with the live image making for more consistent and repeatable pictures.

Decision support tool
The app helps collect and upload data. Then, during late fall and winter, a rancher can review it, make decisions, and be prepared for next year, Johnston said.

"This is a decision support tool. It will give you easily repeatable information that helps you make decisions. It doesn't make the decision," Tusler commented.

Johnston agreed that human judgment is important. "Each person's management goals are different, so monitoring and assessment will flow out of those goals. The app makes it easier to remember and compare conditions from one year to the next at exactly the same site."

Related resources
A new NebGuide, Getting to Know Your Pastures, Techniques to Enhance Monitoring (PDF version), on pasture monitoring techniques complements the app. The NebGuide, was written by Extension Educators Johnston, Tusler and Jay Jenkins of Cherry County, and Jerry Volesky, UNL Range Specialist.

A recent webinar titled "Grass Snap App" shows how the app works and walks through an example.

Questions about the GrassSnap app can be directed to Bethany Johnston at the Central Sandhills Area Extension Office in Thedford, 308-645-2267 or visit the GrassSnap webpage.

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