Knowing when to make a Legacy application is important for a successful growth regulation program. Traditionally, Legacy applications have been made on a calendar based interval. Calendar based intervals do not take into account seasonal fluctuations in environmental conditions.
Growing degree day models are a convenient way of understanding how ambient air temperatures impact the efficacy and longevity of a Legacy application. Currently a model has been developed for creeping bentgrass putting green turf and suggests applications should be made every 270-300 GDD based on application rate. To track your Legacy application intervals and GDD accumulation visit: greenkeeperapp.com
Development of growing degree day models for turfgrass areas in addition to creeping bentgrass putting greens and additional turf types are in development. For specific application interval recommendations, contact your SePRO Technical Specialist.
Application rate takes into account turfgrass species, environmental conditions, intended use site, and other agronomic practices. In general, higher application rates will extend the duration of regulation following an application. For specific application rate recommendations, contact your SePRO Technical Specialist.
Legacy applications should be made only to actively growing turfgrass. Spring applications should be made after resumption of active seasonal growth. Applications should be timed a minimum of 4 weeks before the onset of inactive turf growth or winter dormancy. Applications to overseeded turf in dormant bermudagrass stands should not be made within 4 weeks prior to expected bermudagrass green-up.
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For more information about Legacy Turf Growth Regulator or assistance in designing a treatment prescription, contact a SePRO Technical Specialist. Legacy may not be registered in all states. Always read and follow label directions.