fairy ring: biology and ecology
TRANSCRIPT
Fairy Ring: Biology and Ecology
FBasidiomycete (“mushroom”) fungi
F> 60 species of soil inhabiting fungi have been associated with fairy ring
FColonize soil, thatch, mat, and organic matter
Agaricus arvensis
Agaricus campestris
Agrocybe pediades
Bovista dermoxantha
Bovista plumbea
Calocybe carnea
Calvatia cyathiformis
Camarophyllus pratensis
Campanella subdendrophora
Chlorophyllum molybdites
Clarulinopsis corniculata
Clitocybe infundibuliformis
Clitocybe rivulosa
Collybia butryacea
Coprinus comatus
Coprinus kubickae
Cyathus stercoreus
Dentinum repandum
Hebeloma crustuliniforme
Hydnellum suaveolens
Hydnum compactum
Hygrocybe coccinea
Hygrocybe psittacina
Hygrocybe reae
Hygrophoropsis aurantiaca
Lactarius insulsus
Lactarius piperatus
Lactarius torminosus
Lepista nuda
Lepista personata
Lepista sordida
Leucoagaricus naucinus
Leucopaxillus giganteus
Lycoperdon marginatum
Lycoperdon perlatum
Lycoperdon pusillum
Lycoperdon spp.
Macrolepiota procera
Marasmius graminum
Marasmius oreades
Marasmius siccus
Marasmius rotula
Marasmius urens
Melanoleuca melaleuca
Melanolueca grarmopodia
Nolanea staurospora
Panaeolina foenisecii
Panaeolus campanulatus
Paxillus involutus
Scleroderma verrucosum
Suillus grevillei
Trechispora alnicola
Tricholoma columbetta
Tricholoma panoeolum
Tricholoma terreum
Vascellum curtisii
Vascellum pratense
Agaricus arvensis
Bovista dermoxantha
Clitocybe caespitosa
Clitocybe dealbata
Leucopaxillus giganteus
Lycoperdon perlatum
Lycoperdon pusillum
Lepista sordida
Marasmius oreades
Vascellum curtisii
Vascellum pratense
Lycoperdon perlatumLycoperdon pusillum
Marasmius oreades
Vascellum curtisiiVascellum pratense
Lycoperdon perlatum
Marasmius oreades)
Conditions Favoring Fairy Ring
FSandy soils, newly constructed greens
FExcessive thatch accumulation
FExtremes in soil moisture
FNutrient deficiency, especially nitrogen
Fairy Rings
l Symptoms/Signs: Fairy rings have been classified in several ways, depending on the symptoms and conditions induced. Couch described them as belonging to 2 basic types: edaphic or lectophilic.
l Edaphic fairy rings are those induced by fungi that are soil inhabitants.
l Lectophilic fairy rings are those that are inhabitants of the thatch and upper soil surfaces.
Fairy Ring TypesØType I rings - These have a zone of dead grass
just inside a zone of dark green grass. These are more prevalent on new greens than on established ones. The dead grass may form from mushroom mycelia accumulating below the soil surface and causing the soil to become hydrophobic (water ‘hating’). ØType II rings - These have only a band of dark
green turf, with or without mushrooms present in the band.Ø Type III rings - These do not exhibit a dead
zone or a dark green zone, but simply have a ring of mushrooms present.
Symptoms associated with Lycoperdon perlatum
*Tahama Y. (1980) On the ring of fairy rings on turf grasses. J. Jap.; Turfgrass Res. Assoc., 9(2), 133-6. (Japanese, En. R.A.P.P. 60, 12, 6517 (1981)
Fno green ringFgreen ringFgreen and
necrotic ringFnecrotic ring
Type I fairy ring symptoms
Type II fairy ring symptom
Superficial fairy ring
Fconfined almost entirely to the thatch layer, litter layer and top of the mineral soilFmost are saprophobic and cause little
damageFothers produce unsightly rings & “dry
spots/patch” specifically on sand golf greens
Clamp connection
Nectrotic Fairy Ring/ hydrophobic soil conditions Caused by Lycoperdon sp.
Greening EffectFDue to increased ammonium and
nitrate nitrogen in the soil*FLevels of nitrogen vary depending on:F species of fairy ring causing fungusFmore ammonium nitrogen in soil which had an
abundant myceliumFmost nitrates were found in the zone containing
the dying mycelium of the fungus- In Marasmius oreades – inner stimulated zone
shows more clearly than outer- probably because the nitrate nitrogen is more
available than the ammonium form.
*Moliard (1910), Bayliss-Elliott (1926), & Smith (1957)
Fairy ring symptoms are most evident in under-fertilized turfTredway
§ 0.1 lb N/1000 sq ft appl. 3 Jul 2001.§ 31 Jul 2001 (28 days later).
Masking Symptoms of a Type II Fairy Ring with Nitrogen on a Creeping Bentgrass Putting Green
+N +N-N -N
Fidanza
Pathogenic or Epiphytic?FMarasmius
oreades –hydrogen cyanide which is toxic to grass roots*Fdamaged/dead
roots then colonized by fungusFConfirmed to
produce hydrogen cyanide
Heino Lepp - Australian National BotanicGardens
*Bayliss, J.S. (1911) Observations on Marasmius oreades and Clitocybe gigantea as parasitic fungi causing fairy rings. J. Econ. Biol., 6, 111-32.
Hydrophobic soilassociated with Lycoperdonfairy ring in bentgrass green
Why is fairy ring so difficult to control?
Control of the fungus or the symptoms?
• It is very difficult to eradicate any fungus, especially soil-borne
• In some cases we can suppress the fungus with fungicides
• Sometimes some success with masking symptoms with fertilizer / soil penetrants
• 3 Basic Concepts:– Suppression
• cultural practices, fungicides, • soil surfactants/wetting agents
– Antagonism• mixing soil
– Eradication• fumigation or removal of soil (destructive)
• 2 Basic Strategies:– Preventive --Curative
Fairy Ring: Management
FCurative/Preventive Program:
FCultural practicesFspike or aerify area to be treatedFirrigation - wet soil profile (root zone or depth of 6 in) Fother practices (reduce thatch, proper fertility (N can mask
fairy ring), etc.)FApply soil surfactantFalleviate hydrophobic soil conditions Fsoil surfactants (Primer, Revolution, Surfside…)
FApply a fungicideFfungicides (optimum control w/ 4 to 5 gal water/1000 sq ft)
FDo not allow soil to dry-outFRepeat if necessary
Fairy Ring: Management
PatienceØThe fungus is in the root zone and/or
thatchØkilling the fungus causes desiccation of
the myceliumØthe mycelium must deteriorate/decay for
soil structure to improveØdeath or decay of the mycelium may result in
“release” of nitrogen (“green or ring flaring”)
This process will take time, surely more than 1 or 2 days and quite possibly up to 4 to 6 weeks!
Fungicides for Fairy RingFAzoxystrobin (Heritage)FFlutolanil (Prostar)FPyraclostrobin (Insignia)FFluoaxostrobin (DisArm)FPolyoxin D (Endorse)FSome states with 2 ee label
for Bayleton, preventivelyFTriticonazole (Trinity)F Metconazole (Tourney)
Suppression of Lycoperdon with Prostar
Martin, 1993
Suppression of Lycoperdon with HeritageMartin, 1998
Steve Kammerer
Syngenta Professional Products
1 Aug, 2005
Heritage for Fairy Ring Suppression in Bentgrass - Percent Ring Symptoms
0
10
20
30
40
50
60
70
Percent Ring
CheckSurfactantHerit./0.2Herit./0.2+Surf.Herit./0.4Herit./0.4+Surf.Prostar/3Prostar3+SurfProstar6Prostar6+Surf.
a a
b bb b b b b b
Martin, 1997*surfactant was Primer @ 6 oz/1000 sq.ft.
Fairy ring, % Incidence (Lycoperdon sp.). Myrtle Beach trial site #1. Martin, Clemson Univ.
1998
Test initiated 6/11/98, all materials applied on 28 day intervalirrig=irrigated after application with 0.25”
Fairy ring control w ith Heritage
0 10 20 30 40 50 60 70 80
Untreated
Heritage 0.4oz 28d
Heritage 0.4oz+Primer 28d
Heritage 0.4oz 28d irrig
Heritage 0.4oz+Primer 28d irrig
Prostar 6.0 oz
Prostar 6.0 oz+Primer
% fairy ring
2 wai3 wai6 wai
Irrigated 0.25 in
Not Irrigated
Fairy ring control w ith Heritage
0 10 20 30 40 50 60
Untreated
Heritage 0.4oz 28d
Heritage 0.4oz+Primer 28d
Heritage 0.4oz 28d irrig
Heritage 0.4oz+Primer 28d irrig
Prostar 6.0 oz
Prostar 6.0 oz+Primer
% fairy ring
14 dai19 dai39 dai
Fairy ring, % Incidence (Lycoperdon sp.). Myrtle Beach trial site #2. Martin, Clemson Univ. 1998
Test initiated 6/11/98, all materials applied on 28 day intervalirrig=irrigated after application with 0.25”
Irrigated 0.25 in
Not Irrigated
0
10
20
30
40
Heritage Heritage+ Rev
Heritage Heritage+ Rev
Prostar Prostar+ Rev
Prostar Prostar+ Rev
Check% P
lot
Are
a wi
th T
ype-
I Fa
iry
Ring
88 gpa 176 gpa 88 gpa 176 gpa
Products/1000 sq ft: Heritage 0.4 oz; Prostar 4.5 oz; Revolution 6 fl oz - Fidanza
Fairy Ring Control on Perennial Ryegrass Fairway – PA, 2006.
0
10
20
30
40
Endorse Endorse+ Rev
Endorse Endorse+ Rev
Insignia Insignia+ Rev
Insignia Insignia+ Rev
Check% P
lot
Are
a wi
th T
ype-
I Fa
iry
Ring
88 gpa 176 gpa 88 gpa 176 gpa
Products/1000 sq ft: Endorse 4 oz, Insignia 0.9 oz; Revolution 6 fl oz Fidanz
Fairy Ring Control on Perennial Ryegrass Fairway – PA, 2006.
Lycoperdon Fairy Ring Control 2005
0
5
10
15
20
25
No Fungicide/no penetrant
Revolution
Cascade
Insignia
Heritage TL
Prostar
Insignia+Revolution
Prostar + Revolution
Heritage+Revolution
Insignia+Cascade
Prostar +Cascade
Heritage+Cascade
Martin, Sept.2005
Heritage TL/CascadeRevolution
Heritage/no surfactant
Heritage/Revolution
DMIs for Fairy Ring Control: Background
FFairy ring activity observed during development of triadimefon (Bayleton)
FSuperintendents in Gulf Coast states have been using Bayleton for preventative fairy ring control
FBayleton received 2(ee) label for fairy ring control in 16 states in Feb. 2006
FHow do DMIs compare to other chemistries for preventative control?
FDo soil surfactants influence preventative control?
Prevention of fairy ring caused by Lycoperdonperlatum in creeping bentgrass (June 22, 2006): DMIs
Fairy
Rin
g S
ever
ity (0
to 9
)
All treatments applied twice in March and AprilTreatments were watered in immediately with 0.25” of irrigationRevolution applied at 6 fl oz/M
Miller and Tredway, 2006
Prevention of fairy ring caused by Lycoperdonperlatum in creeping bentgrass (July 11, 2006)
Fairy
Rin
g S
ever
ity (0
to 9
)
All treatments applied twice in March and AprilTreatments were watered in immediately with 0.25” of irrigationRevolution applied at 6 fl oz/M
Miller and Tredway, 2006
Untreated ControlMiller and Tredway, 2007
Bayleton (2 oz) applied 3/22 and 4/19
Miller and Tredway, 2007
Bayleton and Lynx for LycoperdonFairy Ring Control 2006
0123456789
10%
Fai
ry R
in
No Fungicide/no penetra
Bayleton SC, 1 oz, 2@1
Bayleton SC, 2 oz, 2@2
Lynx SC, 1 oz, 2@1
Lynx SC, 2 oz, 2@2
Prostar 70, 2.2oz, 2@ 2
Prostar + Bayleton, 2.2+1, 2@
21 Martin, October 2006
a
bb
aa
b b
Conclusions: Preventative Fairy Ring Control with Bayleton
F Spring applications of DMI fungicides can provide long-term control of fairy ring
F Other fungicides require tank-mixing with a soil surfactant and re-application during the season
F Some injury noted from Bayleton applications – ensure that bentgrass is growing and risk of hard frost is minimal before application
Preventative Control of Turf Root Diseases: Timing
Application Timing is Based on Soil Temperature
✓ Spring Dead Spot: apply in fall when soil temperatures are between 60°F and 80°F
✓ Summer Patch: inititate applications in spring when soil temperatures are above 65°F
✓ Take-all Patch: apply in fall and spring when soil temperatures are between 40°F and 60°F
✓ Fairy Ring: ??????
Rate and Timing of DMIs for Fairy Ring PreventionMiller and Tredway, 2007Fungicide / Rate
F Bayleton - 1 oz/1000 ft2
F Bayleton - 2 oz/1000 ft2
F Lynx - 1 fl oz/1000 ft2
F Lynx - 2 fl oz/1000 ft2
Soil temperature at initiation F(5-day average) - 50°F, 55°F. 60°F, 65°F, 70°F, 75°F
• USGA putting green established in 2004 with ‘A-1’ creeping bent
• All treatments watered-in immediately with 0.25” of irrigation• Cascade soil surfactant (8 fl oz/1000 ft2) applied on 3/20, 5/2,
and 7/25
Five-day Average Soil Temperature, 2007
Aver
age
5-da
y av
erag
e so
il te
mpe
ratu
re (º
F) May 29th:Fairy ring
start
A: Mar 14
B: Mar 25
C: Mar 28D: Mar 30
E: May 2
F: May 30
Lynx, D, 1 fl oz
Bayleton, D, 2 oz
Miller and Tredway, 2007
UntreatedBayleton, D, 1 oz
June 22, 2007
Miller and Tredway, 2007
Prevention of fairy ring caused by Lycoperdonperlatum in ‘A-1’ creeping bentgrass with DMIs,
2007
**Data is averaged across all application timings
a
b
cc c
a
bb
bb
a
ab
b b
b
Fairy
Rin
g S
ever
ity (0
to 9
)
Miller and Tredway, 2007
Prevention of fairy ring caused by Lycoperdonperlatum in ‘A-1’ creeping bentgrass, 2007
Fairy
Rin
g S
ever
ity (0
to 9
)
a
ab
bb
b
b
a
b
bcc c c
a
bbbbb
**Data is averaged across all fungicides and rates Miller and Tredway, 2007
Conclusions: Fairy Ring Prevention with DMIs
FOne spring applic of Bayleton or Lynx will not control fairy ring throughout the summer.
F 1 fl oz of Lynx controlled fairy ring just as well as 2 fl oz.
FExcept at the earliest application timing (50ºF), 1 oz of Bayleton also controlled fairy ring just as well as 2 oz.
F Preventive applications most effective when made in late March, when 5-day average soil temperatures were between 55ºF and 65ºF.
Current Recommendations for Fairy Ring Prevention
FInitiate applications when 5-day average soil temps reach 55ºF.
FMake two applic of triadimefon (Bayleton) at 1 oz/1000 ft2 on a 21 to 30 day interval.
FOnce released, tebuconazole (Lynx) may also be applied at 1 fl oz/1000 ft2
FWater in the application immediately with 0.25” of irrigation.
Miller and Tredway