Summer Sports - Tennis
agronomist, and these showed a reasonable level of clay loam which would provide a reasonable bounce, but allow good drainage as well. Once cultivated, the courts would be
re-graded to much better levels. The soil analysis also showed that the pH was quite acidic too and this was also to be rectified during the works. We obtained quotes from contractors but, even with our saved funds, the prices were over and above what we had available. Fortunately, one of the members is a local farmer, and so we agreed with him that he would strip off and cultivate the tennis courts first, and then the contractor could work the levels, consolidate the ground, seed and fertilise. Work commenced on the 14th September 2011. We took the gate and panel out of the surrounding fencing and removed the tennis net posts on the courts. The sockets were marked to avoid them being hit and disturbed by the heavy machinery. The surface was stripped off using a Hymac and the spoil removed to infill a field somewhere locally. Next came a very large tractor and a 3m wide power harrow. On the instruction of the contractor, this machine was set to a depth of 75mm and we went over the two courts four times to break up the soil. There never seems to be a perfect state of play with the weather; whilst the ground was dry, making it easy to cultivate, it was so dry that the soil just turned into powder. The contractor arrived two days later and applied powdered lime to bring up the pH, and a slow release fertiliser to help provide longer term nutrients to the establishing grass. The tractor- mounted stone rake was then used to grade and consolidate the surface levels and mix in the lime and basal feed. Being so dry, the soil wouldn't compact so, with the levels adjusted, the contractor decided to apply the seed, followed by a light rake before 25kg's of pre-seed fertiliser was also applied. With the early autumn weather staying hot and dry, it was then up to me to try and get the prepared courts saturated. This involved daily visits to the club, to turn the water on and then move the sprinkler around the courts periodically. I spent a lot of time watering and worrying. It took quite a lot of watering to get the penetration I needed. The grass seed was a dwarf perennial rye mix and the contractor had said that
the seed would be up in seven days. I remember looking at the courts on the Friday afternoon the following week and not seeing any grass germinating. The next morning, as I drove onto the recreation ground and around the cricket outfield, I noticed a green hue on the tennis courts. As I got up close, I could see the shoots of grass standing tall at about 5mm above the ground. By the middle of October, the grass was establishing nicely across the courts, and I gave them their first cut using a rotary mower. With the unusually warm and dry autumn, the grass grew quickly and I ended up cutting the courts six times before Christmas at a height of 25mm. We had a small outbreak of fusarium, and the grass started to show signs that the fertiliser was coming to an end in December, so I applied a turf hardener and the grass over wintered very well.
In April, the contractor came back to vertidrain the courts, a job that he'd been unable to carry out during the renovation due to the dryness of the surface. The vertidrain not only helped decompact the subsoil, it also took out the slight bumpiness that was evident in the surface when I mowed.
It was planned to open the courts on the 19th May this year; normally we would aim to open at the beginning of May, but had allowed a little extra time for the courts to recover. That said, we could have opened at least a week earlier, but I decided that the extra time for the grass wouldn't hurt given that members were already resigned to a later start.
The last couple of weeks before the start of the season, I worked the mower height down to 12.5mm. It’s our playing height and, whilst a little longer than say, Wimbledon, it helps protect the grass.
As I write, we are two weeks into the season and there are no visible signs of wear yet on any of the base lines. I will keep this height of cut unless I get a lot of complaints. So far, everyone has expressed their delight at the far improved quality and consistency of bounce, as well as the firmness of the ground. The root growth is down to around 150mm and, apart from some worm cast damage, the courts look like new. As a volunteer, I'm very happy to
recieve all the praise; it may be a while before I hear members moaning again!
“There was no appetite to move away from natural grass.
Despite the fact that members had to play elsewhere in the winter, they loved playing on grass during the summer months”
Grass establishing
Courts in mid May
Courts in early June JUNE/JULY 2012 PC 55
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