Evaluation of acibenzolar-S-methyl and other low-toxicity products for control of rose powdery mildew (Podosphaera pannosa) in greenhouses |
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Authors: | María-Luz Herrero Brita Toppe Håvard Eikemo |
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Affiliation: | 1. Plant Health and Plant Protection Division , Bioforsk – Norwegian Institute for Agricultural and Environmental Research , ?s , Norway maria.herrero@bioforsk.no;3. Plant Health and Plant Protection Division , Bioforsk – Norwegian Institute for Agricultural and Environmental Research , ?s , Norway |
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Abstract: | Abstract In an attempt to find alternative products to classical fungicides, several products with low toxicity were tested against powdery mildew of roses. These products included resistance inducers (Bion, BABA, and ROS), potassium salts (Resistim, monopotassium phosphate), and seed extracts. The best results were obtained with acibenzolar-S-methyl (Bion). The utilization of Bion as prophylactic treatment, watered at a concentration 0.1–0.2 mg/ml, together with good cultural practices can be enough to effectively control powdery mildew on roses. Treatments with Resistim reduced the disease incidence, but not always significantly compared to the controls. None of the other products had effect on powdery mildew. |
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Keywords: | ASM BABA Bion BTH grapefruit (C-pro) induced resistance Neemazal potassium phosphate Resistim ROS |
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