Upgrade Your Program

 Upgrade your PGR program with Legacy Turf Growth Regulator. 

     The most innovative turf PGR to enter the market since Primo MAXX® (trinexapac-ethyl) in the early 1990s, Legacy incorporates two active ingredients, trinexapac-ethyl and flurprimidol, delivering unmatched turf growth regulation compared to current single ingredient PGRs. With the benefit of two active ingredients, Legacy delivers:

  • Improved turfgrass color and quality
  • Eliminated "rebound effect" and scalping
  • Extended spray intervals
  • More uniform growth regulation of mixed turfgrass species 
  • Stopped encroachment of Poa annua

Improved turfgrass color and quality

     Refined maintenance equipment, fertilizers and cultural practices have improved golf course playing conditions over the years, and Legacy continues this tradition. Providing superior turf density, a darker green color, reduced initial bronzing, reduced discoloration, less scalping and overall improved turf quality, Legacy helps superintendents achieve the results they want. 

Eliminate the "rebound effect"

     A foliar-asborbed PGR, such as Primo MAXX, acts at a single site late in the GA pathway, often leading to a flush of growth near the end of the treatment cycle known as the "rebound effect." This undesirable phenomenon occurs when the plant has completely metabolized the active ingredient and begins actively growing at an increased rate. In addition to excess clippings, the "rebound effect" contributes to increased scalping, whereby more than 1/3 of the top growth of turf is removed through mowing; this often removes the majority of the leaf tissue, exposing the crown of the plant. Other impacts of scalping include reduced root growth, reduced photosynthesis and long-term reduction in turf quality and health. Fortunately, Legacy's root absorbed component helps eliminate this effect, leading to a slower release of treated turfgrass, allowing more time for subsequent applications without dealing with scalping or excess clippings.   

Reduced scalping with Legacy

 Reduce scalping with Legacy Turf Growth Regulator. 

     Multiple replicated trials have confirmed that Legacy demonstrates little to no "rebound effect," whereas Primo MAXX consistently rebounds. Legacy provides longer growth suppression and the confidence that treated turf won't scalp upon coming out of regulation.

 Creeping bentgrass clipping reduction, Legacy and Primo MAXX.
 Bermudagrass clipping reduction, Legacy and Primo MAXX.
 Zoysiagrass Clipping Reduction, Legacy and Primo MAXX.

Uniform growth regulation on mixed turfgrass species

     Golf course fairways and tees can often consist of a mixture of turfgrass species. Northern golf courses may have mixtures containing Kentucky bluegrass, perennial ryegrass, Poa annua and even creeping bentgrass. Southern golf courses will have combinations of hybrid bermudagrass and common bermudagrass. Applications of turf PGRs that impact the GA pathway at only one site can often result in non-uniform regulation due to differences in PGR tolerance and sensitivity among the various turfgrass species. Legacy combines two active ingredients with two sites of action along the GA pathway; this, alongside multiple sites of uptake within the plant, provides enhanced, more uniform growth regulation in mixed turfgrass species. 

Stop Poa annua with Legacy

     A growth regulation program using Legacy suppresses Poa annua in cool-season turfgrass. Research has demonstrated that programmed applications of Legacy are effective at suppressing Poa annua populations in cool-season turfgrass species when compared to formulations of trinexapac-ethyl alone, which have shown little efficacy in reducing Poa annua populations. Some research has shown programmed applications of trinexepac-ethyl actually increase Poa annua populations compared to untreated turf. If creeping bentgrass is the desired turfgrass species, then the use of trinexapac-ethyl alone should not be considered a dependable option.

Discourage Poa annua with Legacy

 Programmed applications of Cutless 50W at 8 oz./A reduced  Poa annua  populations by 68% over a two year period.
 Applications of Primo MAXX at 12 oz./A resulted in a 23% increase in  Poa annua  populations.
 Applications of Legacy at 14.7 oz./A on creeping bentgrass fairways prevented  Poa annua  populations from increasing.
 A chart displaying the percentage of  Poa annua  coverage throughout a year in untreated, Legacy-treated, Cutless-treated and Primo MAXX-treated creeping bentgrass.

     The Legacy program provides a gradual increase in cool-season turfgrass populations while reducing Poa annua populations over one to several growing seasons. Temporary initial discoloration of Poa annua is possible with aggressive rates of Legacy, especially during temperature extremes. To maximize seedling establishment during interseeding or overseeding practices, applications of Legacy should be delayed 10 to 14 days prior to and/or after the date of seeding. For more aggressive Poa annua conversion, users should consider programmed applications of Cutless at labeled rates and timings for the desired turfgrass species. 

Dollar spot (sclerotinia homeocarpa) suppression in creeping bentgrass with Legacy 

     One of the active ingredients in Legacy is from the pyrimidine class of chemistry, which is structurally similar to pyrimidine fungicides that provide Dollar Spot control. Programmed applications of Legacy for turf growth suppression or for slowing the encroachment of Poa annua have also shown to suppress Dollar Spot incidence in creeping bentgrass fairways, greens and tees. Research results show that Legacy applications at labeled rates and application intervals can significantly reduce Dollar Spot incidence and populations when compared to untreated control plots. Legacy should not be used to replace labeled fungicides for the control of Dollar Spot; rather, programmed use of Legacy may result in longer or improved control of Dollar Spot in conjunction with conventional fungicides, or delays in the appearance of Dollar Spot disease, thus leading to the potential for an overall reduction in annual fungicide use. 

*Primo MAXX is a registered trademark of Syngenta Group Company

Legacy in Depth