Sports Turf Agronomy Advice - July 2026
The halfway point of the year has arrived once again and, as seems to be becoming the norm, the season has presented plenty of challenges before the main summer period has really begun.
June delivered a wide range of weather across the UK, with prolonged dry spells interrupted by localised heavy rainfall and some thunderstorms. Whilst some areas welcomed much-needed moisture, others saw little meaningful rainfall, leaving soil moisture deficits continuing to influence turf performance.
From a turf management perspective, this has created significant variation between sites. Irrigated surfaces have generally maintained good quality, although water efficiency continues to be a key consideration. Non-irrigated areas have relied heavily on careful moisture management and making the most of any rainfall received. The inconsistency of weather has also resulted in uneven growth patterns, with some sites experiencing flushes of growth following rainfall while others continue to report relatively slow recovery and reduced density.
As temperatures remained favourable throughout much of June, growth potential stayed consistently high where there was moisture available. Nitrogen demand has remained moderate, but applications should continue to be based on growth rather than calendar dates, ensuring nutrition supports recovery without encouraging unnecessary stress or excessive soft growth. Plant Growth Regulator programmes should also continue to follow accumulated growth rather than fixed intervals where possible, particularly where temperatures fluctuate between warm spells and cooler periods.
Looking ahead to July, long range forecasts suggest temperatures are likely to remain close to seasonal averages, with periods of settled hot weather interspersed with showers and the occasional thunderstorm. Whilst this should provide opportunities for recovery, rainfall is still expected to be highly variable across the country, making regular monitoring of soil moisture essential. The pattern now seems to be that rainfall is extremely localised, even within regions. Wetting agent programmes remain an important tool to maximise infiltration, reduce the risk of localised dry patch and improve irrigation efficiency where water resources are limited.
For many winter sports venues, renovation programmes will now be well underway or recently completed. Establishment conditions should generally remain favourable provided adequate moisture is maintained through germination and early seedling development. Attention should focus on maintaining consistent moisture levels rather than allowing surfaces to repeatedly dry and re-wet, which can slow establishment and create variability across renovated areas.
Plant health should remain the primary focus throughout July. Following the environmental stresses experienced during late spring and early summer, turf may still be vulnerable to opportunistic diseases, particularly anthracnose (Colletotrichum cereale). High light intensity, periods of elevated temperature and any nutritional or moisture stress continue to favour disease development. Although prolonged periods of leaf wetness may be less frequent during settled weather, isolated thunderstorms and humid overnight conditions can still provide suitable infection opportunities.
Maintaining consistent plant health through balanced nutrition, minimising stress and promoting steady growth remains the most effective preventative strategy. Little and often nitrogen applications continue to demonstrate good suppression of anthracnose development, while sound cultural practices help reduce plant stress throughout the season. Where disease pressure is historically high, preventative fungicide applications may still form part of an effective integrated management programme.
Biostimulants
July often represents one of the most demanding periods for turfgrass, particularly where moisture availability becomes limiting and heat can be intense. Biostimulant programmes should continue to support plant resilience during periods of environmental stress. Seaweed extracts, particularly those derived from Ascophyllum nodosum, continue to provide valuable support by stimulating natural defence responses and improving stress tolerance.
Amino acid products may also assist during periods of high temperature or moisture deficit by supporting metabolic function and improving nutrient utilisation. Potassium and calcium remain important components of summer nutrition programmes, contributing to water regulation, cell wall strength and overall plant resilience during periods of environmental pressure.
Pests
Monitoring remains essential as chafer activity continues through July in many areas. Adult flight periods can vary significantly between regions and seasons, so recording local observations remains the best guide for determining treatment timing where control measures are planned. Where biological control using entomopathogenic nematodes is being considered, ensuring adequate soil moisture before and after application will be critical to achieving good levels of efficacy.
Regular inspections should also continue for leatherjackets and any secondary damage caused by birds or mammals feeding on developing larvae. Integrated pest management principles remain central to achieving successful long-term control while making best use of the available control options.
As we move further into the summer, successful turf management continues to rely on flexibility. Monitoring environmental conditions, responding to plant requirements and adapting programmes accordingly will remain the key to producing consistent, high-quality playing surfaces throughout July and into the remainder of the growing season.
Tom Wood
B.Sc (Hons) | MBPR | FQA
