Thursday, August 25, 2011

Conditioning the soil

The goals for fall aerification were to remove as much of the top organic matter as possible, give the roots oxygen to breath /create a gas exchange, relieve compaction, and create sand channels to increase water infiltration to the rootzone. The turf is very worn down at the end of the season and precaution must be taken with the turf to ensure proper recovery, therefore we perform a portion in-house and have a contractor bring in their less aggressive machines to finish it off. We began by pulling smaller cores from the top 4" on a very tight spacing, allowing the top layer to breath and dry out from all of the rain. The plugs were pulled to the side, hauled away, and any remaining debris blown off. We topdressed heavily with sand and brushed over the green two times to fill most of the holes. On Tuesday we rolled the greens after they were dry to eliminate sand sticking to the drums and creating a mess. This set us up for Dryject to bring in their machines on Wednesday. These sand injection machines are the best at punching a straight sand channel through the profile. We adjusted the pressure way down for our greens to aggressively attack the top layer with a fat channel. This procedure is very labor intensive as the machine needs to be filled with buckets (we used nearly 40 tons of sand for three machines). We followed that process with a brush and another roll before we added the organic fertilizer as the finishing touch. All goals were accomplished and the healing process has already begun. Below are a few pictures of our three day adventure:
The core aerifier pulling plugs from the green with the box attachment dragging them to the side, reducing foot traffic before the holes are filled.
This is the Dryject machine adding more sand to the profile


This is a picture taken last season after the spring aerification. You can see the distinct layer at the top that we have targeted with our agronomic practices
The top layer is not nearly as evident and a perfect sand channel was added from the dryject machines on the right. All of the small punctures on the playing surface are from our machines, while the larger ones are from the sand injection.

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