Fighting weeds in a hay field or pasture is a top priority. A weed can include anything from shrubs and trees to brambles. Reducing weeds in hay fields is the key to producing a high-yield hay crop. Weeds in a hay field can be reduced and the crop increased by spraying the field with a targeted weed-and-feed product, which is designed to be genetically harmless to crops but will kill weeds.
- Skill level:
- Moderately Easy
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Things you need
- Spraying truck
- Chemical herbicide and fertiliser
Determine the nature of the weed crop. The type of weed will determine the type of spray needed. For example, a broadleaved weed spray product will kill weeds such as clover and leave hay crops such as Bermuda or other grasses intact.
Determine the nature of the hay crop, which will determine which spray to use. For example, alfalfa is a broadleaved plant. The use of broadleaved herbicides will kill the weeds but may kill the hay crop as well. A product containing a pre-emergent herbicide that blocks the development of weeds but allows existing hay to grow is a better choice.
Consult a county extension service agent for help in choosing a product that combines selective herbicides with fertilisers. Weed-and-feed products that contain corn gluten or chemicals such as triazolinone as the active ingredient are effective against weeds but will leave certain types of grass plants alone. Read the label of each product carefully to determine if it is the right choice for your pasture.
Obtain a spraying truck for spraying weed and feed over a large pasture. Rent a spray truck from an rental company or a farm and feed supply. Combine the chemicals, according to the instructions, in the truck's tank.
Apply the chemicals by turning on the spray and driving the truck in a grid pattern over the field. Chemicals should be applied at the proper time each year to kill and prevent weeds. Pre-emergent herbicides should be applied before weed seeds can germinate in spring. Post-emergent herbicides, such as broadleaved types, should be sprayed midmorning in spring or early summer while the weeds are absorbing sunlight and after the dew has evaporated off of the plants.
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- University of Florida IFAS Extension: Weed Management in Pastures and Rangeland - 2010
- Grounds Maintenance Magazine: Research Update: New Broadleaf Herbicide on the Way
- University of Minnesota Extension: Weed Control In Pastures
- Aggieturf: Welcome to the Broadleaf Weed Index
- University of Georgia Extension: Weed Control in Grass Pastures and Hayfields
- University of Kentucky: Weed Management in Grass Pastures, Hayfields, and Fencerows