The First Step Toward Better Grazing: Understanding Rest

The First Step Toward Better Grazing: Understanding Rest

Most of us can feel the difference between rest and true recovery. We sit down at the end of a long day, scroll on the phone for 20 minutes and stand back up feeling as worn out as when we sat. Or we can rest in a way that actually rejuvenates our bodies and spirits — a quiet cup of coffee, a good conversation, a reflective walk through our livestock, a small power nap.  Same amount of time. Very different result.

Hugh Aljoe, director of ranches, outreach and partnerships at Noble Research Institute, says this experience translates to our land, too.

“Rest is just the time period that a pasture doesn’t have livestock in it,” Aljoe says. “It’s the absence of grazing. Recovery only occurs when the forages and plants are actively growing.”

We can look at our grazing plan and say we gave a pasture plenty of “rest” on paper — and still not see recovery. True recovery is a restoration of plant health and vigor.

Read Your Leaves To Time Re-grazing

One of the best ways to observe recovery is to watch individual plant performance. “We have a habit of looking out across the pasture and saying there’s a lot of grass or there’s not enough grass,” Aljoe says. “But what we need to do is look down and look closely at what the grass species we want to manage for are actually doing.”

He suggests starting by identifying a few key indicator plants of ecosystem health — likely the native grasses that will provide essential nutrition for livestock and soil cover — and get a good picture of what “ideal” looks like for that plant at different stages of growth. Pay close attention to the leaves, Aljoe says.

In general, broader, wider, more robust and abundant leaf structure signals healthy photosynthetic opportunity. As leaves mature, the tips — the oldest part of the plant — will begin to brown and senesce. This is the signal that plants have fully recovered and are ready to be grazed again.

“If we top them off at that stage during good growing conditions, grazing just the top 20%-30% (less than 50%) of the leaf structure, we’re leaving the plant at full operation for recovery,” Aljoe says. “There remains enough leaf material to keep the entire root system functioning. When we remove more than half the leaf area, the roots stop growing and slows recovery.”

The Noble team aims to think and plan at least 30 days ahead in terms of growth and recovery during the growing season. When the dormant season approaches, we begin plans to manage our grazing so that the grass will last 30 days into spring.

“We can’t graze everything off completely. We’ve got to leave enough residual matter to protect the crown of the plant through the dormant season,” Aljoe says. “That’s what gets them to start the next growing season, and it’s what protects the land.”

If pastures didn’t make a full recovery before frost, give them time to finish the process before a spring graze.

Why Overgrazing Happens, Even With Plenty Of Acres

Overgrazing occurs on a plant-by-plant basis when an animal takes a second bite before the plant has fully recovered. This is a function of time, rather than space or intensity.

Still, getting an accurate reading on your stocking rate and carrying capacity offers the surest bet to aid in proper recovery. The challenge is these numbers are constantly changing.

“We all want to stock for the average year, but the average year never happens,” Aljoe says.

That’s where a ”rest rotation” grazing system without adjusting stocking rates with rainfall patterns often falls short, and adaptive management  where stocking rate is actively adjusted with carrying capacity has an advantage. If rainfall — and therefore, carrying capacity — falls short, but the stocking rate isn’t adjusted to meet that flux, it’s unlikely to allow plants to achieve a reasonable recovery.

“For every year that you’re overstocked, you can expect to need two years of understocking or abundant rainfall to rebound,” Aljoe says.

Even in an ideal year, overgrazing occurs due to distribution issues — livestock allowed to loiter in high-use areas and re-graze the grasses or forbs they like best.

This is where the number of paddocks or pastures you have available comes into play. Most think of this as their grazing plan, but the true aim of increasing the number of pastures is about a recovery plan. 

Calculating True Recovery Into Every Acre

Consider the simple math in this sliding scale: One pasture with 365 days of livestock access has zero chances of any rest or recovery. Split that pasture in half, and you can automatically grant each pasture 182 or 183 days of rest. Break that same amount of land into 32 paddocks, and each one gets 354 potential days of rest, which means you’re now able to grant rest during the growing season and allow for active recovery.

He’s seen the power of true recovery at work. On Coffey Ranch when Noble first took possession, Noble implemented rangeland restoration through adaptive, multi-paddock grazing. Over the course of ten years, the ranch transitioned from eight pastures to 42, allowing true recovery throughout the growing season and adjusting stocking rate with carrying capacity. Along the way, he witnessed a 350% increase in animal unit days (animal unit day is 26 pounds of dry matter) through increased forage capacity.

“Recovery accelerates everything,” Aljoe says.

Just like people need more from downtime than a mindless scroll, land becomes more resilient when rest is more than the absence of livestock. Real recovery makes room for growth, and it’s a quietly powerful process. “When we do the right things right — stocking within carry capacity, allowing full recovery when possible, maintaining residual — we’re well on our way,” he says. n

Simple Stocking Rate Assessment

Simple Stocking Rate Assessment as You Begin Regenerative Ranching

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How do you know how many heads of grazing livestock your ranch can support while still taking good care of your land? Hugh Aljoe of Noble Research Institute discusses overstocking, overgrazing, and a quick way to determine carrying capacity.

During Noble’s courses on regenerative ranching and regenerative grazing, our facilitators often get questions about knowing the proper stocking rate. What’s the correct number of livestock on your property for a given time? How do you know if you’re overstocked?

Let’s start by understanding the concepts involved. Then, we have a suggested method that can supply a ballpark answer on stocking rate to help ranchers get a good start with regenerative ranching and grazing.

Being “overstocked” is not the same as “overgrazing.” Neither is desirable.

When it comes to grazing-land stewardship on a ranch, two concepts need to be fully understood and managed: “overstocking” and “overgrazing.” These two terms are often used interchangeably, but they refer to two very different conditions.

Overstock is the condition of carrying more livestock than the land resource can sustain, either short-term or long-term. The term applies to the property or land resource under grazing management.

Overgrazing pertains to the plants being grazed. It is the repeated grazing of a plant before fully recovering from a previous grazing event. Overgrazing occurs one plant at a time, and overstocking occurs one management unit (pasture or ranch) at a time.

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There are situations where pastures are both overstocked and overgrazed – no surprise. However, contrary to conventional thought, pastures can be understocked and overgrazed simultaneously. This is often the case when a rancher sets a conservative stocking rate for a ranch. Yet, the grazing approach is either continuous or rotational, with only a few pastures. Pastures will have under-grazed and overgrazed plants present in these cases. The more-preferred plants are repeatedly grazed, while the less-preferred plants are left ungrazed until the livestock are out of the more-preferred plants. Over time, the preferred, heavily grazed plants have reduced energy resources and vigor and eventually die because they never had the opportunity to recover.

Stock appropriately for your land resource

When we approach regenerative grazing, our objective is to be stocked appropriately for the weather events and conditions of the land resource. We also need to graze the pastures appropriately, allowing them periods to rest. Proper stocking and grazing management allow for more uniform utilization of all the plants, minimizes repeated grazing of plants during a grazing event, and allows complete recovery of more-preferred plants (which usually require more extended recovery periods than the less-preferred plants).

The first step in regenerative grazing is to ensure that we are not overstocked—that our initial stocking rate is not greater than the current carrying capacity. In this context, carrying capacity is the total forage produced over time that can be comfortably allocated to grazing livestock in a specific area.

Determining an accurate carrying capacity can appear complicated due to the number of variables involved. These variables include assessing total forage production based on:
  • total number of grazeable acres
  • estimates of actual forage production by pasture and soil type
  • forage type
  • forage management
  • precipitation and weather conditions
  • distance from water, etc.,

and then allocating a percentage of the total production for grazing (for example, 25% grazing utilization for native range, 50% grazing utilization for introduced pasture). While doing this thorough assessment at some point is important, we don’t want it to impede our efforts to succeed at regenerative ranching.

Feeding Hay

To assess overstocking, look at how much hay you feed

The good news is there is a simple assessment you can use to determine if you are stocked at a level greater than your carrying capacity based on current management and current weather conditions. The amount of substitute hay you feed per year can indicate your grazing management and stocking situation.

Hay feeding to increase carrying capacity means a producer is supplying forage, usually purchased, to substitute for the lack of enough natural forage production on the ranch. We need to examine this closely.

For every month of hay that is fed above what is planned (assuming the economic feasibility of the hay), the ranch is overstocked by at least 8.3%. By the same token, for every one-month livestock are made to “hustle” for forage on range or pasture (hustle being defined as livestock grazing behavior to find the next bite of forage after most of the leaf material has been removed from a pasture), you’re also overstocked by at least 8.3%. The 8.3% is simply one month divided by 12 months times 100%.

 

Build resiliency and profitability for your ranching operation in your land.

If a ranch is stocked correctly, there would be enough grazeable forage at the end of the growing season to last until spring green-up. Grazeable forage ideally should last 30 days into spring. That way, livestock can graze last year’s forage (with some new growth within the stand), while the already grazed pastures recover or regrow at the beginning of the growing season.

For most producers, there will likely be a need to feed some hay for extreme conditions or occasional situations where hay is required or desired. In some climates, hay is needed during the winter due to the depth of snow cover; elsewhere, bale grazing is used for desired hoof impact. However, for many producers, especially in the South, hay is expensive to increase the carrying capacity. That is why producers should carefully evaluate the cost of hay and minimize the need for substitute hay feeding.

Overstocking can take a toll on ROI and your land resource

Substitute hay feeding does not apply only to the additional livestock numbers stocked above carrying capacity. It applies to ALL the livestock on the ranch.

Consider a ranch with a carrying capacity of 100 cows, but the current herd consists of 120 cows fed hay for 1.5 months. No substitute hay feeding is required at a stocking rate – the number of livestock present on a property for a given amount of time — of 100 cows. However, at the actual herd size of 120 cows, it is not just the extra 20 cows that require hay; all 120 cows will need to be fed hay.

Let’s generalize and assume one round bale of hay per month of hay feeding. Then, realize that the extra 20 cows cost the ranch 20 cows x 1.5 months of hay and 120 cows x 1.5 months of hay, which equals an extra 180 bales. At $100/bale delivered and fed, that is an additional $18,000 direct cost to the cow enterprise, or $900 for each of those 20 cows over carrying capacity.

Assessing the Costs

Will the calf production of the additional 20 cows cover all their other direct costs plus the additional $900? Not likely, even in a good cattle market. There is an argument that one can prorate the cost of the hay across all the cows as one examines the enterprise. But take a critical look at the incremental increase in costs relative to the increase in revenue as well as the implications for the land resource of overgrazing—the whole picture.

In regenerative ranching, we assess both the direct cost and the cost to the land and ecosystem. There is a point of diminishing returns for both economic and ecological outcomes where the additional production units cannibalize the returns to the resource. Unfortunately, it is usually after we ascertain that we have passed that point of diminishing returns.

Start regenerative ranching with a stocking rate below carrying capacity

When you begin regenerative ranching and practicing regenerative grazing, you should give yourself the best opportunity to succeed. A great place to start is to ensure that the stocking rate on the ranch is below the carrying capacity of your pastures and other growing forage.

Use this simple assessment of fed hay and “hustle” to quickly determine your carrying capacity and adjust your ranch’s stocking rate as needed. It can also help you determine a safe place to begin regenerative management on your grazing lands.

Hugh Aljoe

Hugh Aljoe serves as the director of ranches, outreach, and partnerships. He has been associated with Noble Research Institute since 1995. Before coming to Noble, he managed a 3,000-acre, 1,500-head cattle operation in Texas. Hugh received his master’s degree in range science from Texas A&M University with an emphasis in grazing management.

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