Effective Powdery Mildew Disease Control and Prevention
Among the most common plant diseases, powdery mildew is easily recognized by white powdery spots on plant leaves and stems, and is known to infect almost all plant types, weakening plants and diminishing the flavor of fruits and vegetables.
One of the most important steps in combating powdery mildew is to regularly apply fungicides such as OxiDate. OxiDate’s breakthrough scientific formula rapidly oxidizes on contact to prevent and control many different plant diseases. It has a zero-hour re-entry interval, and can be used from seed right up to harvest in a variety of applications such as: pre-plant dip, soil drench, foliar treatment, and surface disinfectant. OxiDate is also approved by OMRI, meaning it can be safely used without jeopardizing organic crop status.
OxiDate contains only non-toxic components, is earthly-friendly and EPA approved, and is one of the few fungicides that exceeds the strict environmental standards for use and sale in green-friendly California. OxiDate is also specifically registered for citrus de-contamination, packinghouse, and field applications by the EPA and the state of Florida. OxiDate’s revolutionary oxidation chemistry is also exempt from pesticide controls and regulations and effectively prevents the development of resistant strains of disease.
Not only is OxiDate effective against powdery mildew, it has also proven effective in combating a wide range of plant diseases such as: Downy Mildew, Fusarium, Early Blight, Late Blight, Alternaria, Pythium, Anthracnose, Red Stele, Angular Leaf Spot, Phytophthora, Bacterial Speck, Trichoderma, Bacterial Blotch, Verticillium, Gummy Stem Blight, Bacterial Spot, Wilts, and Rhizoctonia, Greasy Spot, and Brown Rot.
OxiDate is recommended for use with a wide variety of crops such as: fruits, vegetables, cole crops, mushrooms, cucurbit crops, root crops, tomatoes, herbs, peppers, snap and dry beans, grasses, tobacco, spices, and peanuts.
Learn more about OxiDate today.
Powdery mildew treatment – is it working?
We had an inquiry from a customer applying our OxiDate RTS on powdery mildew at a rate of 1:50 and and was not sure if it was killing it. His questions were: should the mildew change color or change visually in any other way? How would he know if it is working or not?
Once powdery mildew sets in, it’s difficult to have an effective control. Hence, preventative applications are recommended early in the season rather than late season applications.
Results Identification
Symptoms of powdery mildew are white powdery mass of spores on the upper side of leaves. In chemical trials, the effect of a chemical treatment is normally measured by calculating the number of active spore colonies (white spore masses on leaves) on the leaves before and after treatment. The difference in number of active colonies are not observed right after first application and are normally measured at the end of the treatment cycle which involve 6-7 applications.
A grower should able to find differences in white spore mass after a few applications. With chemical control, white spore mass will get discolored over time and the number of active colonies should be reduced. This requires sampling of 10-15 leaves from different plants and counting the colonies before and after treatment.
Application
The recommended curative treatment for Powdery Mildew is 3 consecutive daily applications of OxiDate RTS, at a 1:25 rate (This rate should be ok but ensure by spraying on few leaves for 3 consecutive days and observe for any phytotoxicity over a 48 hr period time after the 3rd application). Subsequent sprays should be at 1:50 rate once every 5-7 days. We also recommend adding a spreader-sticker to the OxiDate solution to help it adhere to the leaves. Nufilm P works well (it actually has some fungicidal properties as well) and should be added @ 0.125%. OxiDate can also be tank-mixed with other natural spreader-stickers like molasses or orange oil.
Applications to treat Powdery Mildew with our agricultural concentrate OxiDate should follow the recommended label rates and instructions.
Posted May 22nd 2013 at 6:17 pm by Brady
