Reseeding turf areas rejuvenates worn playing surfaces, improving appearance and playability and is an important task for turf managers aiming to maintain the quality of their facilities. Yet it remains a challenge as the unpredictable British climate and the need to work to a budget can make choosing the right seed difficult.
Much is made of grasses bred for specific characteristics or treated with coatings designed to improve germination, but British Seed Houses’ Richard Brown suggests that turf managers would be better going back to basics.
“We work closely with the Institute of Biological, Environmental and Rural Sciences (IBERS) and our cultivars are selected from UK grasses, which means that they are ideally suited to UK conditions,” he explains. “Thus they are already adapted to tolerate mild, wet autumns which can predispose other cultivars to disease, and they can readily germinate and grow at low temperatures.”
The relationship between British Seed Houses and IBERS goes back to 1987, when the company invested in the Aberystwyth based research institute, and since then all of its seed breeding has been carried out in the UK. It is still the only amenity seed breeding programme in this country. AberElf, launched onto the market by British Seed Houses in 1997, was the first British bred perennial ryegrass, and the process of selecting for UK conditions has proved highly successful right up to the latest varieties favoured by the industry.
Leading Browntop Bent AberRoyal, for example, was produced using selections from North Wales. “These cultivars are adapted to wet autumns, and have given AberRoyal its high tolerance to disease. It is also suited to a low nutrient, drought prone environment due to the light sandy soils in this part of the country. Thus AberRoyal makes best use of water and nutrients for excellent performance in difficult conditions.”
Local factors have also been influential in the development of AberRegal, a new Browntop Bent due to be launched in 2012, Richard explains. “Selections from Kent were chosen for their high levels of fusarium resistance, which will make it a useful option to combat disease pressure.”
The approach can also be applied to cultivars used in mixtures – Sheep’s fescue is an important component of mixtures for landscaping and golf roughs and here, IBERS looked to the South Downs to select grasses that are tolerant to low nutrient and drought conditions.
Nothing is left to chance during the seed breeding process, which can be 10-15 years from conception to market launch. The selections are assessed in breeding plots for the attributes required, such as disease resistance or ability to withstand close mowing. Back crossing develops the desirable traits and ensures that the grass grows true to type ahead of testing for Distinct Uniform Stable (DUS) type. It is then entered onto the recommended list and goes for STRI trials before being marketed. Richard comments: “The most influential factors in successful germination are actually correct cultural practice and the use of fresh seed. Turf managers should ask their supplier for an up to date germination test, to ensure that the seed is fresh.”
To thrive and offer the best possible results on your turf, the grasses themselves also need to be carefully chosen, he points out.
“The ability to survive temperature fluctuations during establishment and exhibit good disease resistance comes from making the breeding selection in the UK, ensuring that the seed is naturally adapted to handle challenging UK conditions,” he says.
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