SCANGREEN : Turfgrass species and varieties for integrated pest management of Scandinavian putting greens, 2019-2022

Summary

Since 2003, STERF has tested species and varieties in realistic green conditions. SCANGREEN 2019-2022 is being carried out at NIBIO Apelsvoll, Norway (62°N) and Reykjavik GC, Iceland (64°N) (northern zone, NZ), and NIBIO Landvik, Norway (58°N) and (since 2021) Smørum GC (55°N) (southern zone, SZ). There are extra trial sites in Massachusetts and Minnesota, USA.

In ongoing trials, 30 new varieties and 24 controls (8 species) are being tested. Seed mixtures of 85% Festuca rubra + 15% Agrostis stolonifera, 85% F.rubra + 15% A.capillaris and 85% F.rubra + 7.5% A.stolonifera + 7.5% A.capillaris (designated varieties) are being tested in SZ.

Winter 2020-21 was relatively mild in NZ, but Apelsvoll had stable snow cover JanuaryApril. There was no ice. At both NZ sites, April and May were cold and dry, resulting in very slow green-up and winter damage. Reseeding was done for Poa trivialis (Dark Horse), A.capillaris (‘PPG AT 104’, ‘Jorvik’ and ‘Heritage’) and A.canina (‘Villa’). In Iceland, Lolium perenne (‘Clementine’) was also reseeded. At Apelsvoll, all Agrostis varieties were reseeded again after winter damage. September-November was warm and microdochium started to appear, first in Festuca in September and then in Festuca and Agrostis in October.

In SZ (Landvik), severe frost and very little/no snow cover in January, a very dry April and a cold May reduced turfgrass quality in spring. Reseeding was done in P.trivialis, L.perenne and mixed L.perenne/A.stolonifera. Warm and moist weather in June resulted in some fungi in Agrostis species. Botanical analyses of the mixtures was done in October.

A new trial was established at Smørum GC (SZ) in May. After problems with germination in Agrostis, the whole trial looked good and measurements were as planned. SZ also had warm weather in September/October. In September the Festuca plots were infected by dollar spot. The USA trials in survived winter with no need for reseeding, though there was snow mould in Agrostis in Minnesota. Both sites had a very hot, dry season. Poa trivialis turned colour (purple) early.

Halfway through testing, in F.rubra ssp. commutata, the control variety ‘Barlineus’ and new varieties ‘Orionette’, ‘Euro Carina’ and ‘Gima’ show the best general impression. In F.rubra ssp. littoralis, ‘Absolom’, ‘Barswilcan’ and the control variety ‘Cezanne’ are best overall. In A.stolonifera, the two new varieties ‘Matchplay’ and ‘777’ (‘Tripleseven’) are promising, with low incidence of microdochium patch.

FACTS
Category: Turfgrass
Status: Ongoing
Project period: 2019 - 2022

Fundings (kSEK)

 

2019

2020

2021

2022

Total

STERF

500

375

500

500

1875

Other sources

 153

 0

 264

153

570

Total

653

375

764

653

2445

 

Project objectives

• To screen in the field and clarify which varieties of Agrostis, Festuca, Poa and Lolium are
most winter-hardy, most stress-tolerant and most disease-resistant on putting greens
at four experimental sites representing the two major climate zones in the Nordic
countries.
• To create meeting places for discussions between plant breeders, seed companies and
greenkeepers in order to encourage variety awareness, integrated pest management and
continued efforts into turfgrass breeding for northern environments.