Tuesday, 26 September 2017

Maintenance week Autumn 2017

Our Autumn maintenance week concluded 22/09/2017 and we were blessed with fine conditions, all scheduled  operations to greens and approaches have been successfully carried out by our dedicated green staff.

 A chemical application was made to greens two weeks prior to maintenance week. This application will kill the Rye grass, Yorkshire fog and weaken the coarse Bent grasses within our greens. The surface of the greens will yellow and patches of grass will die off, this is a normal reaction to the graminicide that has been applied.

Discolouring of coarse grasses
The greens are scarified in two directions at least 5mm below the surface using vertical cutting blades with tungsten tips. This will remove a proportion of organic matter from the thatch layer and rake through the dying coarse grasses.

Material removed through scarifying
Greens surface after scarification

This year we used two separate solid tine operations to aerate the greens. 8mm x 200mm tines and 6mm x 100mm tines punched small diameter holes into the soil profile at different depths. Aeration plays an important part in helping air and water move through the soil, air spaces between the soil particles will create gas exchanges to help break down thatch and provide space for root development.
200mm Verti-drain aeration
100mm Procore aeration
Again two different methods and seed were used to over-seed our greens. Shallow holes were made by a sorel roller in which 5Kg of  brown top bent seed was distributed per green. Fescue seed was inter-seeded behind the bent at 20g/m2. Persisting with this blend of grass species will provide us with the optimum putting surfaces year round.

Sorel rolling with bent seed
Inter-seeding with fescue seed
Greens, surrounds and approaches have all been sand-dressed and worked into the surface. In all around 60 tons of straight sand has been applied to the greens complex's to restore levels following the invasive work already carried out. Dressing not only aids us in the reinstatement of the surface but also dilutes thatch, improves water infiltration, firmness and trueness. Further light dressings will be applied as necessary.

Straight sand dressing
Working in dressings
All through these processes the greens complex's were cleared of debris, cut and ironed to ensure we could provide the best surfaces possible following the invasive procedures. The use of hole stabilizing rings will be used temporarily to aid the initial instability around the hole, these will not be used in qualifying competitions and will be removed completely following re-establishment of the surface. 

Hole stabilization
In addition to our normal routine maintenance work the surrounds and approaches of 10, 11 and 12 needed extra attention this year. Thatch and Rye grass infestation has become problematic leading to poor surfaces. The Rye grass had been sprayed prior to maintenance week then we set about removing as much thatch as possible by taking cores from the soil profile using a hollow tine. These cores were left to dry before being broken up with the scarifier, the thatch material removed through this process was blown to the sides and picked up. Straight fescue was inter-seeded and cyclone spread over the tine holes with 12 tons of sand dressing applied and further sand dressing scheduled to reinstate the surfaces.

Hollow tine
Cores on surface
Breaking up cores
Thatch material removed

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