Key Tasks for March
With this cold spell forecast, keep off the green if it is frozen or if there is heavy frost. The following advice is applicable when the cold snap has passed.
During March and early April, spring renovations can be carried out to prepare the greens for the forthcoming playing season:
- Roll the greens
- Daily brushing and switching of greens
- Worm control. It may be necessary to apply an approved carbendazim based product to control worm activity.
Mowing. Weekly or as required. Soil and air temperatures will begin to rise in March and this will stimulate grass growth. Begin cutting when weather conditions allow. Regular mowing will now be implemented to develop an even sward and to keep the surface uniform. It is important to lower the height of cut gradually until reaching the optimum height for match play at the start of the bowling season.
Keep at 10-12mm at the start of the month and gradually reducing to 8mm by the end of the month.
Aeration: When conditions allow. Do not carry out aeration when there is the likelihood of smearing or damaging the surface. Aeration is important to improve surface and subsurface drainage of the green.
Scarifying: Pre-season scarifying should be carried out to remove moss, thatch and decaying matter that may have formed during the winter.
Fertilising: Ideally, you should have conducted a soil analysis of your soil profile to ascertain the nutrient status of your green. This will help you decide on what fertiliser products to buy and apply. Ensure you apply at the recommended rates and do not overdose the green or overlap when applying the products. There are plenty of spring fertiliser products available to meet your needs.
At the time of writing, the fast moving current of air which races high above us, known as the jet stream, is sitting lower than would be expected. As a result, the British Isles lie above its path rather than their typical position above. Consequently, this allows cold arctic air to move in from the north and east, bringing with it low temperatures. The meteorologists estimate that this pattern of weather is likely to extend into the middle of March.
Despite all the modern methods we are able to employ to regulate grass plant growth, the one thing we cannot control is the temperature. This means then tricky times for turf managers who would have been hoping for warmer air to raise soil temperatures and, in turn, stimulate recovery growth after the long winter. The good news, of course, is that disease pressure is likely to be low.
Managers across all disciplines will be under pressure when it comes to members and players expectation of Spring. Forcing growth in such conditions, however, is simply not feasible nor sensible. The plant and soil biology know what they need and no amount of fertiliser will force them to respond when they are not ready and warm enough.
The onset of colder weather is, of course, often accompanied by sunshine, which will provide two benefits on areas which receive direct sunlight.
Firstly, photosynthesis and, secondly, localised warming. Plants will use the combination of solar energy and localised warming from the sunlight to produce sugars and start metabolic function. However, the problem with cool air at this time of the year is two fold:
- Warming and photosynthesis happen in short lived concentrated blocks of time.
- Cold night-time temperatures mean the daily base line soil temperature drops as the soil does not build up any warming momentum.
The result is patchy and inconsistent growth. A useful analogy is to think of it rather like a cyclist trying to get up to sprinting speed as quickly as possible, when every tenth rotation of the pedals his foot slips off.
In relation to inputs, it is a time to concentrate on maximising the windows when the plant and soil biology is active, as well as assisting the plant to withstand desiccation and drought from cold winds. The means to do that is with little and often liquid or soluble applications aimed at the leaf, with the intention of maximising rapid uptake and assimilation. Tools to achieve in this outcome are:
Nitrate nitrogen – research shows it is absorbed into the leaf over 48 hours where it then resides in the spaces between cells ready and waiting to be assimilated when the plant requests it.
Humic Substances – in particular, micronised formulations containing a percentage of Fulvic Acid which acts to pull fertilisers into the plant more efficiently.
Carbon – the foundation energy source of plant and soil life; providing carbon increases utilisation efficiency of fertilisers and props up the soil food web.
Seaweed – plant stress hormones prime the plant by eliciting metabolic functions which allow it to better withstand environmental (abiotic) and pathogenic (biotic) stress.
Calcium – strengthens cell walls, creating a more resilient plant.
Micro nutrients – anyone looking to make informed decisions on their soil health will have had a full chemical analysis undertaken. Foliar applications of deficient nutrients in the tank mix will allow you to overcome a lack of supply of the soil, and provide the plant with everything it needs to maximise those concentrated blocks of light energy and warmth.
Two other important factors with regards to nutrition in a cold dry spring are:
Patience – understand what the plant needs and when; don’t be tempted to plough in nutrient that cannot be consumed. It will either leach into water courses or sit, slowly degrading, forcing a disease susceptible and mower demanding flush when conditions turn warm and wet.
Preparation – get a conventional release Ammonium sulphate based granular fertiliser on the shelf, ready to go down as soon as you see and hear the forecasters confidently predicting a consistent upturn in temperatures and available moisture. Preferably one containing a little calcium for cell division and magnesium for chlorophyll production.
March is an excellent time to treat moss; however, beware too much sulphate of iron if desiccating winds are prevalent, and most certainly hold back scarifying until strong consistent grass growth is there to repair the sward.
As areas dry out from the winter, getting on the ground with machinery and aerating will be possible. Little and often in multiple different ways is a good mantra, but beware desiccating winds leading to too much drying of the surface; especially on poa annua dominated swards
March is the time to start applying polymer wetting agents, such that you have enough time for the chemistry to build up in the soil ahead of summer. Prevention is absolutely better than cure when it comes to dry patch, and planning and preparation now prevents poor surfaces later in the year.
March is a good time to prevent the effects from type two fair rings in the summer. A combination of aeration, surfactants and azoxystrobin fungicide will allow water and active ingredient to move into hydrophobic regions occupied by the fungal mycelium.
You should have had your mower serviced and sharpened ready for the new season; it is well worth the money investing in a proper service.
Keep all machines overhauled and clean.
Inspect and repair any watering or irrigation systems; many bowling clubs now have pop-up irrigation systems. Organise an inspection, re-commissioning and calibration of the system.
Our Lantra Accredited Bowls Green Maintenance Course is now available as an online course.
You can learn about maintaining a bowls green in the comfort of your own home and in your own time. This newly developed course consists of a number of videos with assessment questions, and an accompanying hard copy Course Manual. The Online Course is Lantra accredited and provides you with all the basic knowledge required to maintain a green over a 12 month period.
Pitchcare is the only provider of LANTRA accredited training courses in the maintenance of Bowls Greens. More information
We can also arrange Lantra accredited training on site to groups of 6 – 10 people. Email Carol Smith for information.
The Course Manual at just £30 is available for purchase separately.
- Check and service 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.