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ROLLERS
Poa annua ingression into dark-type perennial ryegrass
originated in Europe, where selections are made more for winter-active growth. In a breeder’s trial subject to wear through the winter, those varieties that are still growing, and are able to recover during this time, will tend to fair best. They are simply better adapted to grow in low light levels and seem to be more efficient at using available light, particularly during the winter.
New material from the South of France has recently emerged via our breeding programmes and has proved particularly successful in UK trials. These varieties show good winter activity, with two having an added benefit of a very rich bright green colour for all but the coldest periods of the year (see table).
These trials clearly point to the benefits of the predominant use of bright green cultivars in winter sports pitches in the UK, particularly in stadia
environments where light levels are low. The use of a minor percentage of a dark type within a mix can be beneficial for certain reasons (eg, to help underpin a nice year-round mid-green colour), but an over- reliance of dark green material in a blend would be likely to have detrimental effects on winter performance under wear.
Poa annua ingression
An additional point of caution to make to anyone adopting a high proportion of dark types within their seed mixture, is to consider the aesthetic value of a sward with a proportion of Poa annua in it.
The ubiquitous annual
meadowgrass will visually blend far better with bright green ryegrass varieties than dark cultivars. This may be of minor concern to high-end football pitches that have the luxury of a full annual renovation but, for anyone managing a more permanent grass pitch, golf course or turf crop, this is a very important consideration. Regular viewers of US tour golf coverage will no doubt be familiar with the ensuing mottled green appearance of fairways and surrounds (see image above).
So, is this grass truly greener on the other side? The temptation to turn over a new leaf may be strong, but, in conclusion, it may not be the best course of action for turf managers in the UK, where the ability to withstand winter wear is paramount.
For more information call 01359 272000, email
info@baruk.co.uk or visit
www.barenbrug.co.uk.
OUTSTANDING GRASS MANY POSSIBILITIES.
SEED SUPPLIERS
Replacement cylinders and bottom blades and much more...
barenbrug.co.uk 01359 272000
• Catering for all sectors of the industry • Standard amenity grass mixtures • Special mixture formulation service • Expert advice • Nationwide delivery For further information contact: Simon Taylor
Tel: 01522 868946 Mob: 07824 601471 Email:
simon.taylor@eurograss.com www.eurograssseed.co.uk
Cricket Renovation Seed Mixes CR1 & CR2 WASP coated seed also available 24 hour delivery
Hurrells Specialist Seeds, Beverley Road Cranswick Driffield East Yorkshire YO25 9PF Tel: 01377 271400 Fax: 01377 271500 Email:
nick@hmseeds.com
www.hmseeds.com SOIL ANALYSIS
NEW ROLLER Designed and built by Swillington Rollers
Data from the Turfgrass Seed 2013 guide's Table S1 - Barenbrug cultivars in ranking order. Note dark green winter colour of North American-bred Barlennium (dark-green type) and outstanding summer colour of Barorlando and Barcristalla (bright green type, bred in South of France)
Key: L Grd Cov = live ground cover; VM = visual merit; W-green = winter green colour intensity; S-green = summer green colour intensity
For use on cricket/sports fields. Hydraulic drive, Hydraulic steer,
Fitted with 9hp electric start Honda
This roller can push, pull, carry load, and roll.
FROM £4200 Part exchange considered
Tel: 0113 287 5318 Mobile: 07946 622748
www.pitchcare.com FEBRUARY/MARCH 2013 PC 137
A2LA Accredited & USGA Approved physical soil testing laboratory for the analysis of construction materials for the sportsturf industry
Contact ETL on 01786 449195 email:
europeanturf@aol.com www.etl-ltd.com
RANGE
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