Dealing with unprecedented disease pressure

Mark Sandersonin Industry News

Bangor disease risk
Turf plants have been under unprecedented levels of disease pressure this winter, compounded by wet and windy weather conditions that have too often prevented timely fungicide applications.

Disease records from the GreenCast website have shown a high risk of Microdochium (Fusarium) Patch infection on more than 85% of days, from October to the end of February.

Syngenta Turf Technical Manager, Dr Simon Watson, highlighted the conditions had presented an incredible challenge for greenkeepers, to prevent infections spreading and to maintain turf quality.

"High disease risk has been almost relentless, apart from a short-lived respite at the end of November," he recalled.

"Fungicide programmes have been severely stretched, especially with growing conditions limiting the duration of contact only treatments," he reported. "Under these conditions, we have seen very good results from Instrata treatments to tackle disease outbreaks and to continue to protect uninfected plants."

The experience of Bangor Golf Club Superintendent, Iain Harrison, has typified the risks and pressures faced by many this season. The intensively-played 18-hole Championship parkland course in County Down, Northern Ireland, has been subjected to the repeated onslaught of wind and rain right through the winter.

"We aim to spray our annual meadow grass and bent greens preventatively, which has normally given me peace of mind through periods of high disease pressure. But no matter how good your skills as a turf manager, there are times when you will be prevented from spraying by adverse weather conditions.

"When disease pressure is high, outbreaks can be inevitable. This winter, Instrata has proved absolutely invaluable for us," he reported.

"At the very first sign of Fusarium outbreak, Instrata had stopped it dead; no other fungicide I know would do that. With the continual pressure for play, recovery time is important and I also get good rapid infill of treated areas."

Although Mr Harrison typically uses around four fungicide applications a year, he believed Instrata remained a great tool to keep in the shed as a vital safeguard. "I use Instrata as part of an Integrated Turf Management programme, rotating actives as part of a resistance management approach," he said.

Supporting Iain Harrison's agronomy decisions at Bangor, Colman Warde of Everris added that Instrata had been used in precisely the right way, utilising the f

Iain Harrison Bangor Golf Club mr
ast-acting multi-active treatment to supplement proactive preventative treatments and target disease outbreaks.

"Only Instrata contains the activity necessary to cover all season conditions - including systemic uptake and movement for long lasting protection whilst turf is growing, contact activity to protect leaf during slow or zero growth and contact+ activity to target pathogens on the leaf and in the thatch," advised Mr Warde.

"Each of the three carefully selected active ingredients work in a different way and on a different point of the disease pathogen's life-cycle. Using Instrata is an essential element of a disease control programme that will minimise the risk of pathogens developing resistance," he added.

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