Agriculture: Strawberry Pest Management Guidelines

Most Effective Treatment Timings for Key Diseases

Note: Not all indicated timings may be necessary for disease control.

  Fungicide At Planting Fungicide Preharvest1
Disease Preplant fumigation2 Clean nursery stock Dips or water washing Before overhead irrigation Foliar Fruit
Angular leaf spot + +++ + +++ +
Anthracnose3 +++ +++ +++ + + +++
Botrytis fruit rot3 + ++ +++
Common leaf spot3 + +++ +++ +++ +++ +
Fusarium wilt +++ ++
Leather rot4 +++ ++ ++
Macrophomina crown rot +++ ++
Mucor fruit rot + + +++
Powdery mildew3 +++ +++ +
Phytophthora crown rot4 ++ ++ ++ (dip) ++ +
Red stele4 ++ ++ + ++
Rhizopus rot (Leak) +++
Verticillium wilt +++ ++

Rating: +++ = most effective; ++ = moderately effective; + = least effective; — = ineffective
1 Preharvest treatments include applications of fungicides before heavy fog, dews, or rain.
2 Preplant fumigation includes chloropicrin, 1,3-dichloropropene/chloropicrin, or chloropicrin; followed by metam sodium or metam potassium. Alternatively, make solitary applications of 1,3-dichloropropene/chloropicrin or chloropicrin.
3 To reduce risk of fungicide resistance development, use an integrated program that includes a rotation of fungicides with different modes of action.

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