Grass Over-Seeding

There are huge benefits to reseeding (see http://www.agritrading.ie/Reseeding-Benefits) and while it will deliver you a strong return where managed correctly, it is expensive-costing circa €250 per acre for a conventional reseed. For this reason, there is growing interest in over-seeding either as:
A full reseed where all vegetation is burnt off with glyphosate (but not ploughed)
A rejuvenation of  a current pasture that is open or has low levels of perennial ryegrass
Cronin Agri in Dripsey are one of a handful of contractors to invest in a specialised drill (in their case the Moore Uni Drill) for this type of operation. Derry Cronin of Cronin Agri believes the method is very successful, provided the job is done in appropriate situations and suitable conditions. Key success factors as he sees them are:
Adequate moisture in the ground when carrying out the task and subsequently for successful establishment of the grass
Rejuvenation is not possible where scutch grass is present-this has to be killed off with glyphosate
Existing swards need to be open (graze tightly) to allow germinating seeds to compete
Use specialist over-seeding mixtures (tetraploids are best as larger seed and quicker to establish)
Don’t skimp on seeding rates-use full reseeding rates i.e. circa 14Kg per acre
Soil test and apply lime, P and K as appropriate. If burning off with glyphosate use a couple of bags/acre granulated lime even if the pH from the soil test is ok (as dying vegetation tends to create acidic conditions at the soil surface)
Applying dirty water/watery slurry after sowing is beneficial
  
Front (notice the heavy duty disks) and back (heavy roller) views of Moore Uni Drill
For more technical information and to see the Moore Uni Drill in action, check out the following YouTube clip: https://www.youtube.com/watch?v=BXkBbgmImWo 

There are huge benefits to reseeding (see http://www.agritrading.ie/Reseeding-Benefits) and while it will deliver you a strong return where managed correctly, it is expensive-costing circa €250 per acre for a conventional reseed. For this reason, there is growing interest in over-seeding either as:
A full reseed where all vegetation is burnt off with glyphosate (but not ploughed)
A rejuvenation of  a current pasture that is open or has low levels of perennial ryegrass
Cronin Agri in Dripsey are one of a handful of contractors to invest in a specialised drill (in their case the Moore Uni Drill) for this type of operation. Derry Cronin of Cronin Agri believes the method is very successful, provided the job is done in appropriate situations and suitable conditions. Key success factors as he sees them are:
Adequate moisture in the ground when carrying out the task and subsequently for successful establishment of the grass
Rejuvenation is not possible where scutch grass is present-this has to be killed off with glyphosate• Existing swards need to be open (graze tightly) to allow germinating seeds to compete
Use specialist over-seeding mixtures (tetraploids are best as larger seed and quicker to establish)
Don’t skimp on seeding rates-use full reseeding rates i.e. circa 14Kg per acre
Soil test and apply lime, P and K as appropriate. If burning off with glyphosate use a couple of bags/acre granulated lime even if the pH from the soil test is ok (as dying vegetation tends to create acidic conditions at the soil surface)
Applying dirty water/watery slurry after sowing is beneficial
  
For more technical information and to see the Moore Uni Drill in action, check out the following YouTube clip: https://www.youtube.com/watch?v=BXkBbgmImWo

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