Spring aerification was completed on all 27 holes last week. I was speaking with one of the grounds committee members after we wrapped up, and he asked how many steps it took to accomplish aerification on greens. Thinking about it, I realized that there were 14 separate steps to aerification on greens alone. Although for a small time it is unfortunate to affect their playability, we will be better off in the long run and especially during the heat of the summer for the work we have put in last week. Aerification of the course involves a lot of planning, preparation and execution. Greens were aerified using a 14 step process.
1) Topdress greens heavily with a 90-10 USGA and Dakota peat blend
2) Deep solid tining then took place. It is important to topdress before the solid tine, this helps work the sand deeper into the holes we have made. We used 3/4"by 14" tines and went to a depth of 10"
3) Once the sand was allowed to dry, the greens were dragged using a heavy steel mat dragged by a cart driven slowly on the green, which worked sand into the holes.
4) This steel mat was then followed by a "coco mat" which is essentially a stiff bristled mat that is dragged behind another cart to ensure that as much of our sand/peat blend was worked in as possible.
5) We then applied a heavy irrigation cycle in order to knock in any remaining sand as well as to relieve the stress from the plants due to all of the mechanical wear they were taking
6) We followed this by using our hollow tine pro-core, we used 1/4" hollow tines and 3/4" spacing at a depth of 4" to remove plugs from the greens. This allows us to remove excessive organic matter at the surface as well as giving much needed space in the greens to allow gas exchange for our modified push up greens
7) After they were allowed to dry, these plugs were then picked up with scoop shovels and hauled away. The cleaning up of these cores actually helps work even more sand into the aerification holes and off of the surface of the green
8) I had the soil tested by a laboratory 2 weeks prior to aerification so that during this period we could help balance our soils inside the rootzone and help grow the strongest turf system possible on greens. We added our soil amendments and the amendments were then watered into the soil profile.
Myself and the rest of the staff put in a very long first day of aerification, and we were able to accomplish these 8 steps last Monday, while still working on aerifying the rest of the course. Here is day 2:
9) Greens were then sprayed with a combined calcium and quickly released nitrogen source.
10) This was then watered into the rootzone using a heavy irrigation cycle. This irrigation cycle helps the turf recover from the stress of aerification as well as grow new roots.
Greens were then permitted to recover for the remainder of the day while we worked on coring, topdressing and cleaning the other areas of the golf course. The aggressive nature of what we put the greens through resulted in small undulations and unevenness on greens. On the third day:
11) Greens were spiked using a "TIP" seeder, opening up small and very shallow new holes to give these small undulations room to be pushed into.
12) Greens were then rolled with our speed roller to help work down these undulations. Greens were once again permitted to heal through the weekend, and although they played slow and soft they will be better off in the long run for everyone
13) On Monday we once again spiked greens with our "TIP" seeder, and greens were seeded at a rate of 1.5lbs/M of T1 Creeping Bentgrass.
14) Greens were then topdressed, the sand dragged in and watered.
So that is it for spring aerification, I am very proud of our staff and the job they did during aerification to not only accomplish greens, but tees, approaches/bail outs and fairways as well. The entire course is healing very quickly, we are currently working the cutting heights back down on greens and we are well on our way to healthier, happier greens here at BCC.