Expected weather for this month:

A continuation of February's unsettled weather is forecast, with the west getting more of the rain.

Key Tasks for March

General Maintenance

All maintenance work will be determined by your local soil and weather conditions. Many courts will be waterlogged, with some of the artificial surfaces becoming damaged by the torrential rain and standing water.

Mowing should be delayed until surfaces have dried out, and hopefully becoming more frequent as the grass begins to grow, aiming for 2-3 cuts per week in April. Any increased mowing regime helps stimulate the grass plant and helps thicken up the sward.

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.

Usually, these renovation revolve around some light scarification work, which helps remove any dead moss and unwanted thatch, aeration, topdressing and overseeding.

Moss is generally the main problem at this time of year. Mosses are primitive non-flowering plants that have no root structure and rely on there being sufficient moisture in the environment for reproduction and survival. The majority of mosses are tolerant of acidic conditions and are stimulated by wet humid conditions. Rapid colonisation of moss and algaes usually occur during autumn and winter months when turf surfaces are lying wet and saturated for long periods of time, particularly when little or no aeration has been undertaken.

Remember, moss is the symptom of poor grass growth, and not the cause of it. If you make sure you have a tightly knit sward next year, and have maximised drainage with plenty of regular aeration, you should not have to deal with moss at all.

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.

It is also important to try to 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.

With regard to aeration practices, any deep aeration of the courts should have been completed in January, so as not to incur problems later in the year. Deep aeration carried out in late March can lead to the tine holes/slits remaining in the soil profile well into the playing season, which can cause some surface deterioration when the clay soils begin to dry out.

Sarel rollers can still be used to keep the top 20-45mm open to aid surface water drainage.

There may still be some bare or thin sward areas; these can be oversown when weather conditions improve; the use of germination sheets will greatly improve success rates.

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.

Artificial Surfaces

Artificial tennis surfaces also need attention. Regular brushing is essential to keep them clean and free from contaminations. Sand filled/dressed carpet systems also require regular brushing to keep them clean and to redistribute sand infill materials.

American Fast Dry courts: Keep surface clean, rolling to consolidate surface, levelling and brushing of fast dry materials, brushing to clean lines.

Tarmac Courts: Now is a good time to clean your tarmacadam playing surfaces. Ideally, it pays to power wash the courts surface to remove any debris, moss and algae that will have accumulated and deposited itself on the courts during the winter months. Be careful when washing, using a too powerful washer can result in surface damage.

Keep surfaces clean, regular sweeping and brushing. Repair any hollows or damaged areas. Repaint lines.

Moss and algae can be a serious problem on tarmac tennis courts, especially if the courts are situated next to trees and hedges, the shading and damp conditions create a favourable environment for moss and algae to grow. Regular brushing and cleaning of the courts helps disturb the moss preventing it from taking hold. However, once established, the best methods of control are by a combination of chemical and washing activities. You should use approved chemical products when treating algae problems - Moss and Algae treatment

Clay courts: Keep surface clean, regular sweeping and brushing to restore playing levels using SISIS Trulute or similar equipment. Topdress any hollows or damaged areas. Repaint lines.

Research has shown that a series of complex chemical signals are triggered in plants as soon as it starts raining. Myc2 is a protein which, when activated, causes thousands of genes to spring into action to prepare the plant’s defences. These warning signals travel from leaf to leaf and induce a range of protective effects. Why would plants panic when it rains? Rain is the leading cause of disease spreading between plants.

When a raindrop splashes across a leaf, tiny droplets of water ricochet in all directions. These droplets can contain bacteria, viruses or fungal spores which have evolved to utilise this means of transmission to a new host. A single droplet can spread these up to 10 metres to surrounding plants. Evidence also suggests that when it rains, the same signals spreading across leaves are transmitted to nearby plants through the air.

One of the chemicals produced is a hormone called jasmonic acid that is used to send signals between plants. If a plant’s neighbours have their defence mechanisms turned on, they are less likely to spread disease, so it’s in their best interest to spread the warning to nearby plants. When danger occurs, plants are not able to move out of the way, so instead they rely on complex signalling systems to protect themselves (Moerkercke et al. 2019).

It’s a good time of the year to undertake training updates, and during a recent education session that was provided to some members of our internal teams, I was reminded that the most diverse ecosystem that exists is in the environment immediately around the plant’s root system. The impact upon playing surfaces, of the volumes of water that we’re experiencing, is as direct consequence of the affect that saturated soils have upon the plant’s capacity to cope with inundation.

Apart from increased levels of disease, the disruption caused to the plant in the form of appreciably reduced populations of micro and meso-organisms, apparent in the amount of worms floating about on the surface trying to obtain respite from a saturated environment.

It would appear that the intervals, or opportunities to undertake the timely operations necessary to maintain sports surfaces to a good standard, appear to be diminishing – speaking to managers over the winter, for some renovations were incomplete or lacking at the end of the season and the start of this period is proving to be troublesome.

As I get older, I appreciate my capacity to forget, and I can say with confidence that once the sun shines and the grass is growing vigorously, thoughts of this water will evaporate and more pressing problems will emerge for our attention.

John Handley
Technical Manager

References
Alex Van Moerkercke, Owen Duncan, Mark Zander, Jan Šimura, Martyna Broda, Robin Vanden Bossche, Mathew G. Lewsey, Sbatie Lama, Karam B. Singh, Karin Ljung, Joseph R. Ecker, Alain Goossens, A. Harvey Millar, Olivier Van Aken (2019) 'A MYC2/MYC3/MYC4-dependent transcription factor network regulates water spray-responsive gene expression and jasmonate levels', Proceedings of the National Academy of Sciences , 116(46).

  • Check and service any floodlighting systems; ensuring they are ready for the new playing season.
  • It also important to replace any worn tines on your aeration equipment.
  • Clean out the shed, sell off any old machinery and dispose of any junk that’s clogging up the shed.