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AERATION ARTIFICIAL


Bowling Greens


THE MYTH - cut it short, roll it flat


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Over many years in the amenity sector, David H. Bates has come up close to the commonest problems associated with bowling greens - the generally accepted theory that, if you ‘cut it short and roll it flat’ you produce quick true surfaces that are fast and uniform. Here, he says, that regime can, and will, lead to disastrous results


Tel: 01207 270 316 email: admin@huntergrinders.com


www.huntergrinders.com DRAINAGE


heavy surface. Unfortunately, many bowlers still believe that the solution to this is a straightforward one and can be rectified by simply mowing very close and by the repeated use of a heavy roller. Whilst a shaving and rolling


I courts clean & safe Making sports DRAINAGE SPECIALISTS


We offer a comprehensive cleaning and maintenance programme for all your artificial surfaces.


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Draining and Gravel Banding


Why not visit our on-line Buyers Guide for direct links to suppliers websites


www.pitchcare.com 124


also Vertidraining, Hollow Coring, Overseeding, Field Top Maker, Deep Scarifying


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programme will sometimes produce an immediate improvement in the pace of the surface, the longer term side effects of these operations can be, and often are, next to disastrous. Excessively close cutting only serves to weaken even the finer turf grasses and, ultimately, leads to the appearance of moss, bare thin swards and weak grass growth, resulting in stressed sward with low wear tolerance, which lacks colour, vigour and appearance. The players and members want immediate rectification and the greenkeeper needs to act quickly. So, he feeds with inorganic fertilisers to change the appearance, i.e. a quick fix mentality. Heavy rolling compacts the soil and leads to drainage difficulties. In wet and compacted soils the grass sward has real difficulty in producing adequate root growth. This can make the sward prone to drought in the summer and generally makes growth weaker than it should be. More salt based inorganic feeds are added to improve the aesthetical value of the green. Compact soil conditions also encourage undesirable weeds


t is true to say that one of the commonest problems on bowling greens is a slow and


and weed grasses, particularly our common enemy Poa annua (Annual Meadow Grass). In order to determine the exact pace of a particular bowling green, it is only necessary to roll woods across its surface roughly from ditch to ditch, with the aim of getting the bowl to stop before it falls in the ditch. If this is repeated several times in different directions, and each wood timed with a stop watch, then an average can be obtained. If each wood takes roughly 18 seconds to cross the green, then the surface can be classified as fast. For greens of average pace, the woods will take 14 seconds. If a figure below 14 seconds is recorded then woods are having to be bowled too hard and too fast, and the classification is excessively slow. In order to effectively deal with


a slow green it is essential to appreciate exactly what is causing the slowness of the surface and not simply turn to the myth that if you cut short and roll, it will sort it out.


excessively slow bowling greens is the presence of thatch. This is found just below the surface and is created by the accumulation of matted grass stems. It is easily detectable when you simply walk across the green as the surface feels soft and spongy, rather like a mattress, and one sinks slightly into it leaving behind a distinct footprint.


It can be useful to cut a slice The most common cause of


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CYLINDER GRINDERS


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