Agriculture: Almond Pest Management Guidelines

Fungicide Efficacy—Biocontrols and Natural Products

Fungicide Biological or natural product
(FRAC group)1, 2, 3
Brown rot Jacket rot Anthrac-nose Shot hole Scab Rust Alternaria leaf spot4 Hull rot5 PM-like6 Silver leaf Bacterial spot
Botector Aureobasidium pullulans (BM 02) 3 2 NL NL NL NL NL NL NL NL NL
Double Nickel 55 Bacillus amyloliquefaciens D747 (BM 02) 2 2 ND 2 NL NL NL NL NL NL 2
Serifel B. amyloliquefaciens MBI600 (BM 02) 2 2 NL 2 2 1 1 1 ND ND 2
Sonata B. pumilis QST2808 (BM 02) 2 NL NL NL NL NL NL NL NL NL NL
Theia B. subtilis AFS03232 (BM 02) ND ND ND ND ND ND ND ND ND ND ND
Aviv B. subtilis IAB/BS03 (BM 02) ND ND ND ND ND ND ND ND ND ND ND
Serenade B. subtilis QST 713 (BM 02) 3 3 2 2 1 1 1 NL ND NL 3
Dart capric and caprylic acids (BM 01) 3 2 ND 2 1 1 2 2 ND 0 3
Cinnacure, Seican, Cinnerate Cinnamaldehyde/Cinnamon oil (BM 03) 1 1 NL NL NL NL NL NL NL NL 2
Procidic citric acid (NC) ND ND ND NL NL NL ND NL NL NL NL
Vectorite Clonostachys rosea CR-7 (BM 02) 4 2 ND 2 ND ND ND ND ND ND ND
EF400 clove, rosemary, peppermint oils (BM 01) 1 2 1 NL ND NL NL NL NL NL NL
Employ harpin (P unspecified) NL 1 NL NL NL NL NL NL NL NL NL
Kasumin* kasugamycin (24)1 Section 18 0 0 0 0 0 0 0 0 0 0 4
ProBLAD Verde Lupinus albus (BM 01) 3 2 NL NL NL NL NL NL NL NL NL
Timorex (Act, Gold) natural oil (BM 01) 1 1 2 1 2 2 1 ND 2 NL NL
Trilogy, Rango neem oil (BM 01) 1 1 1 1 1 2 1 ND 2 NL NL
Oxidate 5.0 peroxyacetic acid (NC) 1 2 1 1 NL NL 1 ND ND NL 2
Milstop potassium bicarbonate (NC) NL NL NL NL 1 NL NL ND 3 NL NL
All Phase potassium sorbate (NC) NL NL NL NL 2 NL NL NL NL NL NL
Howler Pseudomonas chlororaphis strain AFS009 (BM 02) 2 1 NL NL NL NL NL NL NL NL 3
BacStop-OPL,-XL quaternary ammonia (NC-sanitizer) 1 1 1 NL ND NL NL NL NL NL 3
Regalia Reynoutria sachalinensis (P 05) 2 2 1 1 1 1 1 ND 2 NL 3
Actinovate AG Streptomyces lydicus (BM 02) 1 1 NL NL NL NL NL NL 1 NL 2
EcoSwing Swinglea glutinosa (BM 01) 3 2 NL NL 1 NL 1 NL ND NL ND
Vintec Trichoderma atroviride (BM 02)7 NL NL NL NL NL NL NL NL NL 4 0
PlantShield** Trichoderma harzianum (BM 02) NL NL NL NL NL NL NL NL NL 4 0

Rating: 5 = excellent and consistent, 4 = good and reliable, 3 = moderate and variable, 2 = limited and/or erratic, 1 = minimal and often ineffective,
0 = ineffective, NL = not on label, and ND = no data.

* Registration pending in California.
** Not registered, label withdrawn or inactive in California.
1 Alphabetically arranged organic treatments. Note that kasugamycin is a fermentation (natural) product, but not an organic treatment.
2 FRAC group numbers are also provided as BM- or P-number codes (NC = not coded in FRAC). In general, sulfur compounds are fungicidal and may affect applications of fungal biocontrols (e.g., Botector); whereas copper may affect applications of bacterial biocontrols (e.g., Actinovate, Double Nickel 55, and Serenade). Rotations must consider these factors.
3 Sodium lauryl sulfate is not organically approved for crop production (synthetic substance approved for noncrop areas); All Phase is not organic. Cinnacure, PlantShield and Vintec do not have OMRI/WSDA certification and do not claim to be compliant, but their active ingredients are allowed for organic production.
4 Alternaria leaf spot caused by Alternaria alternata and A. arborescens.
5 Hull rot ratings are for the disease caused by Rhizopus stolonifer.
6 PM refers to a powdery mildew disease.
7 Labeled for Eutypa sp., Botryosphaeria sp., Cytospora sp., and other trunk diseases of almond.

Acknowledgment: Adaskaveg et al., 2025. Fungicides, Bactericides, Biocontrols, and Natural Products for Deciduous Tree Fruit and Nut, Citrus, Strawberry, and Vine Crops in California.

Text Updated: 07/24
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