Within several years from establishing a new ley, ‘weed grasses’ will ingress into a sward especially after a hard winter or if the land has been poached (see chart below).
Compared to modern day ryegrasses, these weed grasses will produce lower yields and lower quality forage. The palatability and digestibility will also be poorer which will all result in a reduction in animal performance and profitability from home grown forage.
Weed Grass Ingression
These weed grasses also don’t respond to nitrogen fertiliser inputs as well as ryegrasses (see chart below).
With on-farm margins being squeezed, making sure your sward has the correct grasses to respond to nitrogen inputs is also vital for a sustainable and profitable business. If you are buying and applying nitrogen fertiliser you want to make sure the crop is responding and utilising the fertiliser applied.
Response to Nitrogen
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