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Spring forage management

For pasture and hay producers, spring can be the busiest and most important season in determining this year’s plans for sustainable and profitable production. The key ingredients to your spring forage management are fertilization and weed control.

Spring growth sets the stage for your overall forage production, and applying the right amount of plant nutrients at the right time is critical. Nitrogen will boost grasses at green-up, but applications can be risky in the spring no matter what type of forage you are raising. Will it be too dry or too wet at application time? After application, will we receive rain and how much will we get? It’s hard to make decisions around these factors.

One way to manage your risk is to use nitrogen stabilizers. Products such as SuperU and Agrotain are good tools to minimize losses any time you apply nitrogen.

Soil testing should always be part of your program. Without knowing what we have, it is hard to plan for the future. MFA can handle your sampling needs with either grid or composite samples. If you are looking at increasing your stocking rates, a grid sample program will help put you on track to a profitable future.

Weed control is essential to good pasture management. Weeds compete with desirable plants. They’re generally low in feed quality, and some can be toxic to livestock. Identify and plan a control program best for your farming practice. There are many herbicides available for use on grass. This list is not exhaustive, but does include most of the frequently used products:

GrazonNext HL: This potent broadleaf weed killer is my top choice for general weed control in pastures and hay ground. No license is required to buy or use it. It is safe to use on all grasses. There are no grazing restrictions, and it has 45-90 days of residual activity.

Chaparral: This is the strongest broadleaf weed control available and has the longest list of controlled weeds. No license is required to buy or use it. Fescue is sensitive to this product, but it will recover soon after application. Chaparral has 45-90 days of residual activity. This is a dry product that mixes easily with water. It’s safe to use on all grasses, keeping the caution about fescue in mind, and there are no grazing restrictions.

Graslan L: This broadleaf herbicide is a high-load version of Grazon P+D. It requires a license. Brome is sensitive to this product, and it’s toxic to fish. Leave a buffer strip of 40 feet when approaching any waterway, pond or lake. It’s safe to use on all grasses, with the caution about brome in mind. This is the first year for Graslan L, which will replace Grazon P+D.

Remedy Ultra: This potent broadleaf herbicide also controls certain woody plants. It is often tank-mixed with a Grazon product or Tordon 22K for more broad-spectrum control. No license is required. Remedy Ultra is toxic to fish. Leave a buffer strip of 40 feet when approaching any waterway, pond or lake. It has little to no residual activity and is safe to use on all grasses.

PastureGard HL: This should be your “go to” product for fencerow and spot treatments of brush. This potent broadleaf herbicide and brush killer may cost more per gallon than similar products, but it costs less per acre. There is no license required. PastureGard HL is toxic to fish. Leave a buffer strip of 40 feet when spraying near any waterway, pond or lake. It has very little or no residual activity and is safe for use on all grasses.

Tordon 22K: This potent brush herbicide is effective on many species and controls a large number of broadleaf weeds. It requires a license to buy or use it. Use caution when spraying near any body of water. Tordon 22K has 45-90 days of residual activity and is safe for use on all grasses, although it can stunt brome.

Tordon RTU: This ready-to-use product is primarily a cut-stump treatment. Do not dilute. Tordon RTU does a good job of killing the root system and preventing resprouting of most tree species. There are no grazing restrictions for cut-stump treatments using Tordon RTU.

Here are a few other points to consider:

  1. Always read and follow the herbicide label. It trumps anything I’ve written.
  2. Be sure the weeds you want to control are on the label of the product you are using.
  3. Always use Astute or Astute Extra at 1 quart per 100 gallons. This is your “spreader/sticker,” and its use is as important as using the right herbicide.
  4. Spray when the wind is 3-10 miles per hour to avoid unwanted movement via drift.
  5. Spray when weeds are small for best control.
  6. Spray brush that has at least 18 months of growth.
  7. With brush control, don’t bush hog until they are all dead. Bush hogging too early is like starting over.
  8. Consult your local MFA agronomists. They can provide valuable insight to increase your success.

Check MFA’s Agronomy Guide for grazing restrictions and more information. If you have questions, feel free to contact me. I’m the new range and pasture specialist for MFA, taking over for David Moore who has accepted a different position with the company. My wife and I operate a small cattle farm in southwest Missouri, and I have worked for the past 17 years at the Lamar MFA Agri Services location.

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