Agriculture: Strawberry Pest Management Guidelines

Fungicide Efficacy

Fungicide Resistance risk (FRAC)1 Powdery mildew Gray mold Anthracnose Angular leaf spot Common leaf spot Mucor rot Rhizopus rot Leather rot Crown rot Red stele
Bumper/Tilt8 high (3) ++++ ---- ++ ---- +++ ---- ---- ---- ---- ----
Luna Privilege high (7) ++++ ++++ ND ---- ND ND ND ND ND ND
Luna Sensation medium (7/11)2 ++++ ++++ ND ---- ND ND ND ND ND ND
Luna Tranquility medium (7/9)2 ++++ ++++ ND ---- ND ND ND ND ND ND
Mettle high (3) ++++ NR ND ND ND ND ND ---- ---- ----
Procure high (3) ++++ ---- + ---- ---- ---- ---- ---- ---- ----
Quadris Top8 Medium (3/11) ++++ ++ +++ ---- ---- ND + ND ND ND
Quilt Xcel,Avaris 2XS8 medium (3/11) ++++ ++ +++ ---- ---- ND + ND ND ND
Quintec high (13) ++++ ---- ---- ---- ---- ---- ---- ---- ---- ----
Rally high (3) ++++ ----

++

---- ++++** ---- ---- ---- ---- ----
Rhyme high (3) ++++ ----

NR

---- NR NR NR NR NR NR
Torino high (U6) ++++ ---- ---- ---- ---- ---- ---- ---- ---- ----
Abound7,8 medium (11)2 +++ ++ +++ ---- ---- ND ND ND ND ND
Cabrio medium (11)2 +++ ++ ++ ---- ---- ND ND ND ND ND
Evito medium (11)2 +++ ++ ++ ---- ---- ND ND ND ND ND
Fontelis high (7) +++ ++++ ND ND ND ND ND ND ND ND
Kenja high (7) +++ ++++ ND ND ND ND ND ND ND ND
Merivon8 medium (7/11)2 +++ ++++ ND ---- ---- ND ND ND ND ND
Ph-D,Oso medium (19) +++ ++ ++ ND ND ---- ---- ---- ---- ----
Pristine8 medium (7/11)2 +++ ++++ ND ---- ---- ND ND ND ND ND
Sulfur low (M2) +++ ---- ---- ---- ---- ---- ---- ---- ---- ----
Topsin-M,T-Methyl,Incognito very high (1)2 +++ +++ ---- ---- ++ ---- ---- ---- ---- ----
Velum One10 high (7) ++ + ND ---- ND ND ND ND ND ND
Captan very low (M4) +/- ++++ +++ ---- ---- + ---- ---- ---- ----
Elevate high (17)2,6 +/- ++++6 + ---- ---- ---- ---- ---- ---- ----
Aliette3, 7,Legion** low (33) ---- ---- ---- ---- ---- ---- ---- +++ ++ ++
Bravo low (M5) ---- NR ++ NR +++ NR NR NR NR NR
Captevate medium (M4/17)2 ---- +++ +++ ---- ---- + ---- ---- ---- ----
Copper low (M1) ---- ---- ---- +++5 ---- ---- ---- ---- ---- ----
Fungi-Phite, K-Phite, Prophyt low (33) ---- ---- ---- ---- ---- ---- ---- +++ ++ ++
Ridomil Gold SL4 high (4)2 ---- ---- ---- ---- ---- ---- ---- +++4 ++ ++
Rovral,Ipro-dione,Nevado low (2) ---- +++ ---- ---- ---- ++ ---- ---- ---- ----
Switch7 high (9/12) ---- ++++ +++ ---- ---- + +++ ---- ---- ----
Thiram low (M3) ---- ++ ++ ---- ---- ---- ---- ---- ---- ----
Biologicals/ Natural Products
Fracture low ++ + ---- ---- ---- ---- ---- ---- ---- ----
Serenade ASO, Serenade Opti low ++ + ---- ---- ---- ---- ---- ---- ---- ----
Actinovate7 low + ---- + ---- ---- ---- ---- ---- ---- ----
Cinnacure low + ---- ---- ---- ---- ---- ---- ---- ---- ----
Double Nickel low + ---- ---- ---- ---- ---- ---- ---- ---- ----
M-Pede low + ---- ---- ---- ---- ---- ---- ---- ---- ----

Rating: ++++ = excellent and consistent; +++ = good and reliable; ++ = moderate and variable; + = limited and/or erratic; +/- = minimal and often ineffective; ---- = ineffective; NR = not registered; and ND = no data.
** Not registered, label withdrawn or inactive in California.
1Group numbers are assigned by the Fungicide Resistance Action Committee (FRAC) according to different modes of actions (for more information, see http://www.frac.info/). Fungicides with a different group number are suitable to alternate in a resistance management program. In California, make no more than one application of fungicides with mode-of-action group numbers 1, 4, 9, 11, or 17 before rotating to a fungicide with a different mode-of-action group number; for fungicides with other group numbers, make no more than two consecutive applications before rotating to fungicide with a different mode-of-action group number.
2To reduce the risk of resistance development, start treatments with a fungicide with a multi-site mode of action; rotate or mix fungicides with different mode of action FRAC numbers for subsequent applications, use labeled rates (preferably the upper range), and limit the total number of applications/season.
3 Foliar applications provide systemic treatment.
4Ridomil Gold SL is the only formulation registered. If the GR formulation is applied to a previous crop that must be removed, it has a 0-day plantback interval.
5More than 4 applications causes severe stunting.
6Nonpersistent resistant populations of Botrytis cinerea to fenhexamid occur with repeated use of FRAC group 17 fungicides.
7Plant dip (nurseries) or foliar spray (field use).
8Not for use in nurseries, on nursery transplants, or greenhouses (check label for details).
9 Bravo is registered under a 24c special local needs for nursery use only on non-bearing plants. It is used as a dip treatment of transplants.
10 Velum One is a fluopyram formulation for chemigation. Soil applications are designed for nematode management but may also suppress powdery mildew.

Acknowledgment: Adaskaveg et al., 2017. Efficacy and Timing of Fungicides, Bactericides, and Biologicals for Deciduous Tree Fruit, Nut, Strawberry, and Vine Crops.(PDF)

Text Updated: 07/18