As a farmer who has moved into sports pitch and golf course work l have read this string with interest.
Farming is catching up with the amenity industry!!
Aeration is one of the key features of good grass growth, together with fertility and pH.
On sports pitchs and golf courses we use slitters, spikers and power operated bladed machines to creat the air voids needed in the soil profile to help good root growth.
ln the past we have used drop seeders to overseed, but have found that too much seed did not germinate as it does need a bit of soil cover.
On large areas we now use tined seeders, an Opico with a pneumatic seeder and an Amazone with power operated tines and a drop seeder behind, they both work well if you can creat a small amount of tilth.
The problem with all these machines is they do not place the seed into the soil, the only way you can really ensure a good germination.
This week we are trying a disc drill on 40mm spacings to overseed greens and teeing areas on a golf course.
This machine should put the seed about 5mm into the ground, be interesting to see how it performs.
Both industry's are after much the same result, improved growth, better resistance to drought and wear, and the requirement to improve the grass species present in the sward,
We can learn from each other!