Sports Turf Agronomy Advice - November 2026

October has once again demonstrated how important the autumn period is for turf managers, with the transition from the growing season into winter bringing both opportunities and challenges.

As we move into November, the focus begins to shift away from promoting growth and recovery towards protecting turf quality, continuing to manage disease pressure and maintaining playable surfaces through increasingly challenging conditions.

November is often one of the most demanding months of the year for turf managers. The combination of falling temperatures, shorter daylight hours, prolonged leaf wetness and reduced growth potential means that the grass plant has less opportunity to recover from wear, disease or mechanical damage. Where there is still high demand for play and main events still taking place. This is particularly significant for golf courses and winter sports pitches, where expectations for surface quality and playability remain high despite increasingly unfavourable growing conditions.

Any opportunity to maintain active growth during the latter stages of autumn provides a valuable window for recovery following renovation work, disease outbreaks and wear from play. However, as we enter November, it becomes increasingly important to recognise that the plant's ability to recover has reduced significantly and will continue to do so, even when temperatures remain relatively mild.

Looking back at October, the UK experienced a changeable month, with periods of Atlantic driven weather bringing rain and strong winds, particularly across northern and western regions. The final week was especially unsettled, with further rain and storm conditions before high pressure began to establish itself towards the end of the month.

Following the exceptionally warm and dry summer experienced across much of the UK, autumn rainfall has been important in replenishing soil moisture reserves. However, the transition from dry summer conditions to wetter autumn weather can present its own challenges. On some sites, moisture levels in the upper rootzone may increase significantly while deeper areas remain relatively dry, particularly where hydrophobic conditions have developed during the summer.

The relatively mild conditions experienced during parts of October have provided opportunities for continued turf growth and recovery. However, the reduction in available daylight and falling soil temperatures mean that growth potential has been declining as we approach November.

Growth potential (GP), becomes particularly useful at this time of year, not just through the summer. A daytime temperature of 12-14°C may still provide an opportunity for growth, but the reduced energy available for photosynthesis, combined with longer periods of leaf wetness, means that growth and recovery are considerably less effective than during September.

The month has highlighted the importance of adapting maintenance programmes to site conditions rather than following fixed calendar dates. Where conditions have remained favourable, turf managers have been able to continue essential maintenance, whereas wetter sites have faced more restricted access and increased potential for surface damage.

The latest long-range forecast indicates that November is likely to begin on a relatively settled note, with high pressure dominating much of the UK through the first week and potentially into the second. This is a welcome development following the unsettled conditions experienced during the latter stages of October.

However, settled weather at this time of year does not necessarily mean ideal growing conditions. Light winds, clear skies and high pressure can encourage overnight frost, mist and fog, with some areas potentially remaining damp throughout the day. This creates a situation where rainfall may be limited, but leaf wetness duration remains high, maintaining favourable conditions for fungal disease development. For turf managers, the early forecast offers a potential opportunity to complete essential maintenance operations before conditions deteriorate later in the month. However, particular attention should be paid to overnight temperatures, surface moisture and the duration of leaf wetness, rather than rainfall totals alone.

Disease management

Disease management remains one of the main priorities throughout November, with Microdochium nivale continuing to present a significant threat to turf quality and performance, particularly on golf greens and other intensively managed surfaces.

The combination of reduced growth potential, prolonged leaf wetness and temperatures favourable for pathogen activity means that disease outbreaks can develop at a time when the plant has limited capacity for recovery.

The predicted settled conditions at the beginning of November do not necessarily mean a reduction in disease risk. High pressure, light winds and persistent morning fog contribute to extended periods of leaf wetness, even in the absence of rainfall. This creates favourable conditions for Microdochium development.

An integrated turf management (ITM) approach is essential. Cultural management practices, including dew removal, improving air movement, managing shade and reducing surface moisture, should form the foundation of a disease management programme. Fungicides should be used as required, with emphasis on preventative treatments based on disease forecasting, site history and prevailing conditions. Selecting appropriate products, understanding their modes of action and rotating FRAC

groups are important considerations in reducing resistance risk. Applications must be made in accordance with current UK authorisations and label requirements. Nutrition also plays a key role, with excessive nitrogen applications potentially encouraging soft, susceptible growth at a time when recovery potential is declining.

Nutrition

Th reduction in growth potential brings a corresponding decline in the plant's nutritional requirements. This is an important consideration when planning fertiliser applications, particularly where the aim is to maintain turf health and colour without encouraging excessive growth. The objective should be to provide sufficient nutrition to support essential plant processes and recovery, while avoiding applications which encourage unnecessary shoot growth and increase disease susceptibility. Micronutrients such as Iron can also play a useful role in maintaining turf colour without the requirement for high nitrogen inputs. However, repeated applications of acidifying iron products should be carefully managed to avoid potential long-term impacts on soil chemistry and plant health.

Water management

Water management will continue to play a major role in maintaining turf quality and playability throughout November. The Environment Agency reported that England received an average of 55 mm of rainfall during the seven days to 27th October, the wettest week for two years. Despite this, drought conditions remained in parts of the country, highlighting the considerable variation in soil moisture reserves and the challenges facing turf managers.

Maintaining an appropriate water-to-air ratio within the rootzone is essential for supporting root function and minimising turf stress. As rainfall increases and evapotranspiration declines, soils can remain wetter for longer, reducing oxygen availability and increasing the potential for surface deterioration.

Aeration programmes should continue where ground conditions allow. Shallow aeration techniques, including sarrel rolling and slitting, can assist water movement and gaseous exchange with relatively little surface disruption. Deeper aeration may also be beneficial where compaction is restricting drainage, although carrying out these operations when soils are excessively wet can cause more damage than benefit. Sometimes less is more, when the more could actually be doing more structural harm than good.

Penetrant wetting agents can also form part of an effective winter water management strategy by aiding the movement of water away from the turf surface. However, it is important to ensure there is an adequate route for water to move through the rootzone

into a drainage system, otherwise you can simply transfer excess moisture deeper into the profile without resolving the overall problem.

Earthworm activity

Earthworm casting continues to be one of the most frustrating challenges for turf managers during the autumn and winter months. Increased soil moisture and relatively mild temperatures provide favourable conditions for earthworm activity, with casts causing significant disruption to playing surfaces. The same conditions promote autumn growth, where cutting is still a requirement to stay on top of growth. This is particularly problematic on golf fairways and winter sports pitches, where regular play and maintenance increase the potential for damage. Where casting is problematic, consideration should be given to an application of PGR following a ‘last’ cut, this would significantly reduce the requirement to go back onto the surface to carry out further cutting when conditions were not suitable.

Looking ahead

The opportunity for active growth and recovery is reducing, while the environmental pressures on the grass plant continue to increase. The key to successful turf management during this period is understanding the relationship between growth potential, nutrition, moisture and disease pressure. Maintaining a balanced approach, avoiding unnecessary inputs and responding to changing environmental conditions will help preserve turf quality through the winter months.

The aim now is to maintain a healthy, resilient grass plant capable of withstanding the stresses of winter while preserving the quality and playability of the surface.

Tom Wood
B.Sc (Hons) | MBPR | FQA

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