Providing you were able to keep your pitches irrigated during the recent hot spell, your grass should be growing strongly now. These hotter temperatures, plenty of daylight and the addition of water makes for perfect growing condirtions.
July is forecast to be unsettled to start off with, but with average temperatures for the month, so that will be helpful as some clubs prepare for the first of their pre-season friendlies.
For those of you experiencing some dry conditions, ensure that your surface is open. Surface spiking in a dry spell will help what rain you receive, or water you put on, to move quickly down through the profile to reach the new roots.
Key Tasks for July
Continue cutting regularly to ensure a good sward density. It may sometimes be helpful on newly established grass to lightly roll the surface before cutting to ensure that the does not get pulled out by the action of the mower. Also, ensure that any mowing equipment used is keenly set to cut without tearing. Let the clippings fly to assist nutrient levels and retain water in the surface.
The soil can dry out quickly in any periods of sunny conditions, so make sure that your irrigation systems are functioning correctly as, once soils become hydrophobic and dry patch sets in, it becomes very difficult to get water back into the surface.
You may choose to use wetting agents to ensure uniform wetting, particularly on soils prone to dry patch.
Continue the work of brushing to keep the air circulating around the base of the plant, particularly important for removing early morning dew and controlling disease.
Spike when the conditions allow, but keep your regime flexible.
Apply a summer NPK fertiliser, something like a 12:0:9 or 9:7:7, to maintain grass colour and vigour. Liquid fertilisers and biostimulants have become popular, primarily due the fact they can be often mixed and taken in by the plant more readily. A slow release fertiliser could be applied to see you through July and August. The choice of materials and how well they work will depend on factors such as soil type and weather, with moisture and air temperature being the catalyst for growth.
Do not apply fertiliser during periods of drought, unless you have the means to water in.
Avoid the use of fertilisers with a high salt content, as this will exacerbate the stress factors in the grass as it draws moisture from the plant. Use of liquid fertilisers are less likely to scorch grass, but may still need to be watered in.
Consider, as an alternative, applications of seaweed or amino biostimulants to help your grass through stressful periods. Another consideration is the use of calcium, an important ingredient for giving the plant rigidity and regulating root and shoot growth.
From one stress to another
As the climate lurches from blazing sunshine, intense heat and high evapotranspiration to low light levels, high humidity and potential waterlogging, so the plant is exposed to abiotic (environmental) stress one week and biotic (organism) induced stress the next.
Accordingly, a turf surface may enter wilt and dormancy one week or it may come under attack from fungal diseases the next. The key thing to understand is this; as the extremes are more intense and unpredictable, the buffer zone of tolerance before the onset of plant, and ergo surface damage, comes under increasing pressure. Turf surfaces which do not conform to good agronomic standards and are not being maintained with sound agronomic principles will have a very narrow buffer zone of tolerance, and will be toppled over the edge into damage far quicker than those which are.
So, theory aside, what practical steps can turf managers take through throughout July to help mitigate against stress damage?
- Use weather windows wisely
Time waits for no man and the British weather is no exception. Make sure you have stocks of feed and treatment on the shelf; in this way, you can make applications at the very best time to maximise positive effect on the plant and soil ecosystem, thus maximising turf quality and value for money.
- Monitor climactic patterns and gain an awareness of triggers
5-7 day forecast is hot and sunny – foliar apply seaweed to trigger plant systemic-acquired resistance mechanisms, tank mix with a little potassium to better regulate stomatal function and thus water loss, add a little calcium to compensate for its lack of mobility in dry conditions by shortcutting it straight into the plant where it can be utilised for the growth of cells.
5-7 day forecast is warm and humid – foliar apply some seaweed and a carbon sugar, again to trigger plant systemic-acquired resistance but also to boost plant beneficial rhizobacteria in the soil, add some phosphite and calcium to guard against fungal pathogen penetration of the leaf.
The key factor for determining success with these strategies is three fold: Monitor the upcoming climate > Understand what the prevailing climate will trigger > Understand the mechanisms by which products have an effect on the plant and in the soil.
The number one rule which applies to both - undertake these operations proactively prior to the stress, aim to prevent not cure.
- Look after the physics
Coming into or out of a wet period – soft ground means opportunity for deeper vertical aeration which will allow the soil to breathe assisting soil microorganisms and encourage deeper vertical rooting, increasing the plant’s tolerance to dry periods.
Coming into or experiencing a hot period – undertake sarel or star tine aeration to break through a high percentage of the soil surface, increase the ability of irrigation or water to penetrate, thus increasing the surface’s tolerance to dry periods.
General agronomic jobs for July
- Maintain wetting agent programmes.
- Maintain plant growth inhibitor programmes.
- As a rule of thumb, apply granular feeds when rain is prevalent and look more toward foliar or liquids when experiencing dry spells.
- Don’t apply herbicides when experiencing hot weather, as the plant will have shut down its systems, massively reducing uptake, transportation and thus efficacy.
- Continue to monitor the life cycle of insect pathogens such as leatherjacket and chafer beetles in readiness to apply entomopathogenic nematodes, as per the seasonal application periods.
- Monitor for anthracnose activity - the spores will have been activated by high temperatures at the end of the May and again the end of June, incubation takes around 6 weeks. Chemical treatments are an option, as are weekly small doses of nitrogen.
Please note: More information on diseases and many others can be found here: www.pitchcare.com/useful/diseases.php
It is important that your mower blades are set properly and are kept sharp. Blunt blades can tear the grass and leave it susceptible to disease.
You are now able to obtain the basic knowledge of how to maintain a football pitch online:
Our LANTRA accredited Winter Sports Pitch Maintenance Course (Rugby & Football) is now available in an online format.
Like our one day course, it is designed to provide a basic knowledge of rugby and football pitch maintenance. The course enables the Groundsman to grasp the basic needs of a winter sports surface throughout a 12 month period. As an online version, it means you can learn at your own pace and at home. The Course Manual is included as part of the online course.
Delegates attending the one day course or using the online version, and using the accompanying manual, will be able to develop their own skills, working knowledge and expertise, by understanding the method of instruction and the maintenance principles it sets out.
Included in the Course Manual, there are working diaries showing the range of tasks needed to be accomplished each month. The Course Manual is available for purchase separately.
Our next one day course is being held:
Tuesday 22nd August, Basingstoke RG21 3DR. More information
If preferred, we are able to arrange courses to be delivered on site to groups of 6 – 10 people. Email Chris Johnson for information.
Other training courses available include:
Safe Use of Pesticides (PA courses)
Pedestrian operated mowers
During this month: Please ensure that all goalposts meet health and safety standards. Now is a good time to thoroughly check them over. If you have stored them away, give them a thorough once over to ensure that they will be fit for purpose for the new season. If you find any defects, these must be reported to your management/committee, with appropriate remedies being sought – ahead of the season!
It would be prudent to thoroughly clean out your linemarking kit. If the forecasted showers appear, what better time to do this mundane but important job? Regardless of the type of machine you use, you’ll be pleasantly surprised by how much better your lines will look for the start of the season.
Other areas should also be checked over, such as fences and dugouts.
If you have not already done so, get your machinery serviced.
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