Article Summary: Satellite-based pasture monitoring is helping UK farmers tackle challenges like unpredictable weather and uneven terrain by providing accurate, real-time data on grass biomass. This technology is being embraced by farmers who have reported improved grazing management, healthier livestock, and reduced feed costs. The satellite system provides a whole-farm view, allowing for better decision-making and long-term planning. With these innovations, satellite technology is proving to be a game-changer for sustainable pasture management in the UK.


Efficient pasture management is essential for livestock farming in the UK, where unpredictable weather and hilly landscapes can make it challenging to maintain productive grazing systems. 

British farmers, and farmers worldwide, have long relied on traditional methods like Rising Plate Metres (RPMs) to measure grass height and manage grazing. While RPMs are widely used, there are some limitations, especially in areas with uneven terrain and frequent rain. 

With advancements in technology, satellite-backed solutions are now emerging as a more effective alternative to traditional RPMs. These solutions offer real-time data, greater consistency, and the ability to monitor pasture health even in difficult weather conditions. 

This article discusses the benefits and challenges of traditional RPMs and why upgrading to satellite-based technology may be a smarter choice for UK farmers.

Traditional RPMs in the UK: The current landscape

RPMs have been used in the UK for decades as a practical tool for managing rotational grazing. The device works by measuring the height of grass, helping farmers determine how much pasture is available for their livestock. One of the main reasons RPMs are popular is because they are relatively cheap and easy to use. 

The simplicity of RPMs has made them an attractive option, especially for small and medium-sized farms. They are also widely accepted by farmers across the country because they do not require any special training or technology to operate. With just a few measurements, you can get a basic idea of how much grass is available for your animals.

However, while RPMs have been a valuable tool, they come with certain downsides. One major drawback is that RPMs rely on manual data collection. This means that if measurements are not taken correctly, the data can be inaccurate. 

Additionally, RPMs may give inconsistent results, especially on uneven terrain, which is common in the UK. These inconsistencies can make it harder to manage grazing effectively, especially in hilly regions where grass growth can vary significantly.

Weather and terrain challenges for UK farmers

The UK is known for its unpredictable weather, with frequent rain, cloud cover, and sudden temperature changes. These weather conditions can greatly impact pasture management. For example, heavy rain can cause waterlogging in fields, making it difficult to accurately measure grass height with traditional RPMs. Cloudy weather and high winds can also make it challenging to get reliable data from manual measurements.

Additionally, the UK’s hilly terrain can limit the effectiveness of traditional RPMs. When measuring pasture in uneven areas, RPMs may not provide accurate results because the device measures the grass height at only one spot. 

This can be misleading, as grass growth is often uneven across different parts of a field, especially in regions with slopes and valleys. As a result, farmers may make incorrect decisions about how to rotate their livestock, leading to either overgrazing or undergrazing, both of which can negatively affect the pasture's health and productivity.

Satellite-based pasture monitoring: A better fit for the UK

In response to the challenges faced by UK farmers, satellite-based pasture monitoring has emerged as a better solution for managing grazing. Satellite technology offers several key advantages over traditional RPMs, particularly in terms of accuracy and consistency. 

  1. Real-time updates

One of the biggest benefits of satellite-based monitoring is its ability to provide real-time updates, regardless of weather conditions. Advanced satellite imagery solutions are able to capture detailed information about pasture health and grass growth, even when the sky is cloudy. This is especially helpful in the UK, where cloud cover is common. 

With nearly daily satellite updates, you can get a much clearer picture of what is happening in your fields without having to worry about taking manual measurements in the rain.

  1. Comprehensive pasture views

Satellite technology also offers a more comprehensive view of your pasture. Instead of measuring grass height at just one or two points, satellite data covers the entire field, providing a detailed analysis of grass growth patterns across different areas. 

This can help identify sections of the pasture that are overgrazed or undergrazed, allowing for better management decisions. By using satellite data, you can make more informed choices about when and where to rotate your livestock, leading to healthier pastures and improved productivity.

  1. Monitor pasture health

Another advantage of satellite monitoring is its ability to track changes in pasture health over time. This long-term insight can help you spot trends and make adjustments to your grazing management strategy before any serious problems develop. 

For example, if certain areas of the field are consistently underperforming, you can investigate potential causes, such as soil issues or poor drainage, and take action to address them.

Results on the ground: UK farmer success stories

In the UK, farmers have successfully adopted satellite-based pasture monitoring through the “PASTORAL” project, which integrates satellite data with advanced models to track grass biomass and predict growth. 

James Allen, a livestock farmer from Wiltshire, found the technology particularly useful during periods of unpredictable weather, helping him to better manage grazing rotations and save time by avoiding manual grass measurements. He reported that the tool allowed him to make more informed decisions, ultimately saving both time and money.

Similarly, John Ker, a beef farmer from Somerset, transitioned from set stocking to a hybrid grazing system, using the satellite data to extend his outdoor grazing period by nearly eight weeks. This shift improved livestock health, reduced feed costs, and enhanced his farm's overall productivity.

Both farmers highlighted how the satellite monitoring tool provided a “whole-farm view” that helped optimise their grazing strategies, proving to be an invaluable resource in managing their farms more effectively in the face of climate change.

The next step for UK farmers: embracing satellite technology for grazing success

For UK livestock farmers, managing pasture effectively is key to maintaining a healthy, productive farm. While traditional RPMs have been a useful tool for many years, they are not without their challenges, particularly in the face of the UK’s unpredictable weather and hilly terrain. 

Satellite-based pasture monitoring offers a more advanced, reliable alternative that addresses many of the issues associated with traditional RPMs. By providing real-time updates, greater consistency, and long-term insights, satellite data can help you make better decisions about your grazing management, leading to healthier pastures and more productive livestock.

If you are looking to upgrade your farm’s pasture management system, consider learning how satellite technology can transform the way you manage grazing. That’s where pasture.io comes in — our Pio app puts the power of satellite readings and real-time decision-making in your hands!

With the right tools and technology, you can ensure that your farm is well-equipped to handle the unique challenges of the British landscape.

Contact the team today to learn more about how Pasture.io can help you step into the next phase of your agribusiness: growth!

Until we meet again, Happy Measuring!

- The Dedicated Team of Pasture.io, 2024-09-10