surface (within one and a half inches, 35mm or so), deep scarification and hollow coring combined will be the best options to choose, with emphasis on scarification.
Scarification has a limited working depth but can, if used correctly, remove much larger amounts of thatch than hollow coring alone (especially with some of the more modern pieces of scarification equipment). If the material lies deeper than one and a half inches, or 35mm, hollow coring will play a bigger part, used in conjunction with scarification. If we didn’t know where the target was, we may choose the wrong options and delay the development process or not move forward at all.
Getting on top of the situation
It is essential to the current and future performance of the green that a curative programme be implemented to solve the problem, if highlighted.
Fact: Increasing preventative maintenance only, such as solid tine aeration, topdressing rate/quantity, and/or verticutting etc., will often not make sufficient headway where thatch amounts are excessive.
They are, however, all-important preventative measures but, if an excess exists, better to tackle it using curative methods and reap the benefits quickly. This could mean contractor assistance owing to the specialised machinery needed to de-thatch effectively. It
should, thankfully, come as much comfort that a lot can be achieved in a short space of time; provided the correct de-thatching methods are used.
Final thoughts
Too much thatch in your green is nothing for you to be embarrassed about. Recent climatic changes, the natural growth of grass and, perhaps in some instances, inappropriate past management, may have collectively led to the current situation where thatch amounts are too great. It is more important that the main threat to achieving firm, fast playing quality - excessive thatch - is recognised, curative measures implemented and the problem overcome, than to continue on the same path with ongoing problems. Two major innovations have occurred that will make the difference here: STRI's thatch/organic matter testing service, and improved de-thatching equipment. The testing service should be used as the starting point to find out what actions are needed at your club regarding thatch, so that you can successfully overcome them and enjoy better playing quality.
Fact: In the author’s experience, excessive thatch is the most common cause of poor performance-related problems for both surface playability and maintenance management, together with its associated costs. Let’s work together to get on top
of it! PROTEA
UNBEATABLE VALUE
Four years on and still growing, thanks to hundreds of satisfied customers
We deliver high quality machines at affordable prices with back-up service second to none. 6, 9 and 12-blade Greensmowers from £1,300 + VAT Outfield Mowers from £3,700 + VAT Scarifiers from £1,300 + VAT
Comprehensive parts and labour warranty. All spares available next day. For information on Mowers, Groomers and Scarifiers, call Rivendell Projects on
01949-851420 or visit
www.Rivendell-Projects.co.uk 109
A profile section taken through a bowling green: note heavy surface thatch
Classic deep surface thatch in desperate need of reduction
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