January Tennis Diary 2012

Laurence Gale MScin Tennis

Probably the worst time of the year for natural grass tennis courts, the recent wet weather will have certainly saturated the courts. While they are in this state, it is best to leave them alone; clay soils, when in a plastic wet state, are unstable and easily smear.

Ideally, you will have aerated in November with a suitable solid tine spiker achieving a depth of penetration between 100-150mm. This operation will have helped increase the porosity of your soil profile and will have aided surface drainage.

There is still a chance of snow falling in some parts of the country. Prolonged snow cover on turf often results in an outbreak of turf diseases with snow mould being one of the most prevalent. In most cases, a dose of fungicide should help control and clear up the disease.

Early in the Month 1st - 15th January

With soil temperatures hovering and remaining around 5-8 degrees C, there will be little or no likelihood of any grass growth until the spring.

However, climatic conditions will vary during January, possibly initiating outbreaks of disease.

Later in the Month 16th January - onwards

January is a good time, whilst it is quiet, to plan and get yourself organised. What are your targets for this year? What do you want to achieve? Have you organised your spring renovation works? Have you ordered materials and machinery for the forthcoming season?

Key Tasks for January

Daily brushing will help disperse early morning dews and help dry out the sward, thus reducing the amount of surface leaf moisture content that can initiate an outbreak of fungal disease. Brushing also helps stand the sward upright and increase air flow around the grass plant.

Useful Information for Brushing

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It is important to try and keep the the top 50mm of the soil profile free draining, this is achieved by keeping the surface open to allow gaseous exchange, thus preventing anaerobic conditions prevailing. The surface is kept open by a programme of aeration techniques, varying the type and size of tines used.

For shallow aeration, the use of a sarrell roller is sufficient, however you may need to go deeper by using either pedestrian or tractor mounted aerators fitted with longer tines, which can be selected to achieve depths of aeration from 100-300mm.

Care should be taken when undertaking these task; trying to aerate when the soil is wet or saturated can cause greater problems such as smearing and compaction.

Useful Information for Aeration

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The sward should be maintained at its winter height of cut between 12-18mm. The use of a rotary mower can be ideal for topping off and, at the same time, cleaning up any surface debris.

Useful Information for Mowing

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Inspect drainage outfalls, channels and ditches. Ensure that they are working. Renew or repair any damaged or problematic drainage systems.

Useful Information for Drainage

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Keep an eye on fungal disease attack, and use approved fungicides to treat infected areas. Any mild and wet weather will certainly provide the ideal climatic conditions for diseases. Regular brushing or switching off the dew in the mornings will reduce the chance of fungal attack.

Useful Information for Disease

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Other Tasks for the Month
  • Tennis structures: Inspect stored posts, nets, seating and notice/score boards. Replace with new equipment if required. Repair any damaged fencing.

  • Litter: Inspect and remove debris from playing surface - litter or any wind blown tree debris, twigs and leaves. Leaf debris can be a problem during the winter months. It is important to sweep and clear the leaves off the courts as an accumulation of wet leaves will damage the grass surface.

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