1). Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. It grows well in quart and gallon containers, but also thrives in hanging baskets as part of Trixi® combos. An early-to-finish, medium-compact calibrachoa with uniform flower timing across the series. Attempts to inoculate petunia have not been successful. Pre-rinse and disinfest benches and potting lines with 1:50 dilution of ZeroTol, Use new trays and pots if possible; avoid using old flats unless they’ve been steamed or disinfested by pre-rinsing in water and then soaking in fresh 10% bleach or 1:50 dilution ZeroTol for a minimum of 10 minutes, Maintain substrate pH within the range of 5.4 to 5.8, which is optimum for growing calibrachoa, Monitor fertility to avoid stressing plants; a stressed plant is a more susceptible plant, Control fungus gnats, which can move the pathogen around the greenhouse, lRoot rots can look similar: get a lab diagnosis for confirmation, Rooting stations: Drench rooted cuttings about 18 days after sticking when roots are well-developed, Finish growers: Drench transplants immediately after transplanting, Thielaviopsis control: Drench with thiophanate-methyl, lPythium and Phytophthora control: Drench with etridiazole, Daconil Weatherstik (chlorothalonil) = Daconil 2787 in Candada (FRAC code M5 protectant), Eagle (myclobutanil) = Nova in Canada (FRAC code 3), Trinity (triticonazole) in U.S. only (FRAC code 3), Terraguard (triflumizole) in U.S. only (FRAC code 3), Trigo (triadimefon+trifloxystrobin) in U.S. only (FRAC code 3+11), Pageant (boscalid + pyraclostrobin) = Pristine WG in Canada (FRAC code 11+7), Compass (trifloxystrobin) = Compass 50 WG in Canada (FRAC code 11). This series has the most diversity on the market, featuring classic core colors, doubles and stars! In Canada: Senator 70WP apply 850 g/1,000 L; retreat in 21 to 28 days, Terrazole 35WP apply 10 oz./100gal; retreat in 28 days. Attempts to inoculate petunia have not been successful. 2). The site may not look or function as expected. Do we see unusual or unexplainable symptoms? Podosphaera xanthii is also known to infect verbena and petunia. oz./100gal; retreat in six weeks, In Canada: Truban 30WP apply 900 g/1200L, retreat in 28 days, List of Fungicides and FRAC codes for Powdery Mildew fungicides. While I’ve encountered Tomato chlorotic dwarf viroid (appears to be symptomless), Tomato mosaic virus (causes a mosaic/mottling) and Calibrachoa mottle virus (mottled leaf) in the industry, the diseases I diagnose most frequently on calibrachoa are powdery mildew and black root rot. Incipient symptoms of yellowing and blotchiness on a mid-level leaf. Check out this video! May only be used if a Pythium or Phytophthora metalaxyl-or mefenoxam-resistant isolate is documented. It was made by the American Phytopathologycal Society and it highlights what you can do as a plant pathologist and what it takes to get you there. This means that fungicide-resistant populations pose a similar threat to successful control of powdery mildew on calibrachoa in the greenhouse. Sometimes I even sense the inquirer actually hopes that I’ll have some fascinating new disease to tell them about. 4). 2. These diseases may not be new, they may not be exciting, but they can still ruin the salability of your crop in 2018. Yes, but most of the time they fall into the “undetermined or suspected cultural problem” category that really means “I don’t have a clue, but I can’t find any evidence of a pathogen.”. However, there are two additional powdery mildew species that have been identified on calibrachoa in Germany (one that also infects tomato, and one that can also infect petunia and verbena). Plant Disease Diagnostician for Commercial Ornamentals, Extension Associate, Vegetable and Herbaceous Ornamental Pathology, You will automatically get notified when we post news and tag it, Assistant Professor & Extension Specialist, Associate Professor, Plant Pathology (Cucurbits and Sweetpotato), Director, Plant Disease and Insect Clinic, N.C.

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