Usually Id delete a personal attack (i.e., I somehow get money for this), but the comment is too hilarious to ignore. I have quoted the section regarding cornmeal and beneficial fungi in an article I recently published as well as other articles and research which strengthens my belief that cornmeal can help control lawn disease. Your soils also contain Phytophthora and other pathogenic species. Based upon the current interpretation of the SM espoused in this thread, all of humanity could bare witness to an event or occurrence but it would only be an apparition or myth without the blessings of the scientific community. 1) Not one works for the chemical companies that get rich of of selling their expensive, polluting, chemical poisons. Do a little homework and find out who we are and what we do. Is it true. You would need a reasonable size of say 10 square feet per lot (for a small garden). . They would have been better off making corn bread and using their garlic for cooking purposes!, Dr. Parsons continues: Let me explain how these University tests and recommendations have been misrepresented in a desperate attempt to find an organic fungicide. If there were a logical hypothesis that could be put forward e.g., corn meal kills fungi by (fill in a known mechanisms here), that could be explored and supported or disproven. I would bet dollars to donuts that some 400 years ago many of the kings most scholarly and well educated wisemen pranced around claiming that they have busted Christopher Columbus myth that the world is round. Unlike cornmeal, both baking soda and milk have shown some fungicidal activity in controlled experiments and these results have been published. Even Einstein has been trumped on occasion , Now Im on to researching tea-tree oil for my toenails! View all posts by Linda Chalker-Scott, So I followed the link to the article. It may take years before other oaks die. Corn has a protein named zeamatin that is a known fungicide. Wounds created by the ice storm are no longer fresh and do not need to be painted; however, any new wounds created during cleanup must be painted immediately, said Texas A&M Forest Service biologist, Robert Edmonson. By then we no longer used the broadcast method because of issues with squirrels, deer, and fire ants. Extremely well said! If not you can say the myth is busted. This morning, I ordered 150 pounds of agricultural cornmeal, which I will apply to my brown St. Augustine grass every few weeks. Corn meal is organic material. As I have read this blog, I see two issues at play: (1) the efficacy of cornmeal as an organic fungicide or preventative and (2)the approach of Mrs. Scott in what has been described repeatedly described in this thread as arrogant, dogmatic and less than user friendly. Before I started mulching my sandy soil had virtually no life in it and now all kinds of soil organisms (including earth worms) now thrive in there. The resulting high Trichoderma population can destroy vast amounts of Sclerotinia, Sclerotium and Rhizoctonia. I pasted the link below, so I hope it works. they are creatures of habit and always sniff the area that they are marking need I say more, we all know what chili in the mouth and nostrils feels like and you will probably get rid of your brown spot on the lawn problem too. I showed other researchers and we had a big laugh at your rant. The articles I mention on my web site are based on scientific research, and baking soda does have some efficacy, as does milk spray. The article is attributed to one Marie Iannotti. Apparently, todays version of the Scientific Method would seem logically to infer that nothing in science is true or factual until it undergoes the rigid filtration processes of testing and scrutiny. Photos courtesy of the author. For me its cheaper and easier to spread cornmeal and its been effective. As we like to stress, extraordinary claims require extraordinary evidence. Because it would be highly unprofessional for professionals to pass out unsupported information in their field of expertise. An oak wilt contamination can be more easily contained when treatment begins early. Research project title: Accurate detection and integrated treatment of oak wilt (Bretziella fagacearum) in Minnesota Taxa: Pathogen Species: Oak wilt (Bretziella fagacearum) Project status: Completed in 2021 Funding: $357,420 Background. The next year (2015) a June inspection discovered all five trees with symptomatic leaves and we recommended re-treatment. I understand this is not the kind of science we need. It requires the ability to follow an undefined number of fungal populations over time, which requires microbial laboratory facilities and equiment that most of us dont have. Prevention is key, but early detection is crucial to limiting the spread of oak wilt. Oak wilt is a very common and serious tree disease in Lakeville. Regarding wood chips any tree service can provide them. Post-treatment in a mixed species forest stand. Linda Chalker-Scott, And since I cant find a single published paper that links those two search terms together, then theres no supporting evidence at this point. thats better than horse manure NPK of 0.44 / 0.17 / 0.35. Who is going to sponsor a study for something this simple that has no chance of being profitable on a large scale. That doesnt mean they dont work mean u need to use more than one method. So published research has demonstrated that corn meal is not a economical organic source of N. There are better choices. Your comments are well founded! You mean like you not correcting where you said the experiments with cornmeal also involved crop rotation? About.com mainly cares about putting keywords on pages, not about accuracy. If so, be sure all other treatments (water, fertilizer, etc.) Most oaks but especially red oaks are susceptible. Dr, Chalker-Scott, His informative (and hilarious) columnon brown spots in lawns states Lately there have been claims made that corn meal and a garlic extract is effective. Pathogenesis-Related Proteins in Plants analyzes the practical aspects of employing PR-proteins for plant protection, in a possible role as the first or last line of defense against pathogens and pests. Not only would this be highly irresponsible, it is also illegal. We would love an opportunity like this for our Southside Grounds Maintenance Conference that is held every January here in our community. stop the oak wilt spread in Hollywood Park. Project information. Do you wonder why further testing in field conditions have not been performed? Me too, it doesnt hurt may help. Last fall I experimented with WHOLE-GRAIN corn meal as fertilizer was impressed at how DARK GREEN plus leaves became shiny and glossy. Remove diseased oaks to stop the above-ground movement of the disease. Under research observation at the research center these crops didn't have fungal diseases when they followed the corn planting in rotation. Self proclaimed experts dont convince me of anything on the subject. I wasnt aware of the anti-fungal property claims of cornmeal but how do you feel about it being an amendment as a slow release nitrogen source? I have no skin in this game; I just ran across your rant when I was doing agricultural research. (As a footnote, let me say how annoying it is when gardening personalities grant themselves advanced degrees or certifications in their titles. As with compost tea or any other untested material, it is up proponents to demonstrate, conclusively, that it works. A single stand will drive-up the unit price. Ironically, whenever a company or other interest group steps up to do so, many people are suspicious of the results. Even the most efficient N-supplying composts, cover crops, or other organic N sources do not release appreciable N to a subsequent crop beyond 6 to 8 weeks from incorporation, and this burst of early N may not synchronize with N requirements for many vegetable crops. See link below for pictures of purplish streaks on corn leaves with bone meal, plus yellowing of young leaves. Silvicide in trench: $1000 first application minimum / $750 second application minimum. I think David is the source for spreading the use of cornmeal to the lawn care community and does a good job of explaining it. I really dont know what else to do. and finally, at least twice in this thread you stated how it is illegal to recommend the application of cornmeal as a fungicide, (Im assuming you are refering to FIFRA regulations and EPA reg. I returned in two months to inspect the treated trees and there were no symptomatic leaves on any of the five Live Oaks, in the tree or on the ground. The disease quickly spreads to nearby oaks. The original document that has been referenced by others is no longer online but many references to it are still around. 1. install a root graft barrier; and 2. remove and properly use trees inside the barrier. Some gardeners apply cornmeal to the soil or create a cornmeal spray to prevent blight. Its not up to skeptics to demonstrate the opposite.. Dr. Percival mentioned in his 2017 talk that Trichoderma was also producing an antibiotic, so we have applied the drench to trees with Crown Gall. Tim and Linda please follow the link in the article by Marie Annotti to find the originator of the idea of using cornmeal as a fungicide in organic circles. White oaks are the least susceptible, but they are not immune to infection. As for me I would alternate neem oil & corn meal I dont need some one to hold my hand and tell me something work test it ur self and know with ur experiance. Angela: I will be very interested in the results of your trial. This article was published by Michigan State University Extension. That's why we now recommend it for use on brown patch in St. Augustine grass, damping off in seedlings, black spot on roses and many other fungal diseases. Perhaps someone might want to begin with spreading cornmeal on newly emerging hollyhock foliage in the spring, repeat treating on the soil once a week throughout the growing season to prevent the common rust problem. Basically what you are saying, is since it is not necessary to disprove the theory, no additional empirical data is necessary from your camp the obligation rests with Camp Cornmeal to prove that it works, because Roberts Rules say so. I was told use cornmeal or milk spores? I am still early to the process but I am noticing some positive results for the areas that I treated. For a few dollars one can perform their own tests and draw their own conclusions. The discovery of cornmeal's fungal disease control came about by noticing the peanut crops. The spores can be anywhere in the plugs, in your garden soil, etc. Some sort of crop (lawn?) In 2016, we again treated all five Live Oaks with a cornmeal drench, but I charged for the treatment, $125 plus tax for 5 trees. Corn meal works! Linda, you have missed an opportunity to be an ambassador for your institution. @OrganicLawnCare: The Discovery Channel has done nothing but lower the bar when it comes to debunking myths, notions, lore, and the like. A barrier should be at least four, and prefer- ably five feet deep. Posted by Strawberryhill 5a IL (My Page) on Oak roots graft to each other, allowing the oak wilt fungus to spread from tree to tree until all the connected oaks are dead. it aint going to happen. But this is a science-based forum, and Howard Garretts advice is anything but scientific. Liquid organic N sources for use in microirrigation systems may have additional disadvantages caused by loss of valuable nutrient N that is removed by filters.. It seems to me there are two themes to this thread. So, consider every cut carefully. You have no evidence of causation. It could cripple the tree, or maybe even kill it. When toxic chemical products are used, the effect of the cornmeal will be lost. That is why the research that is done is coming out of Europe and Great Britain where agrochemical use is so restricted. They refer to Stintzi et al (29), as a reference, but I dont have access to the table of references. You can easily treat against infection and death of trees by oak wilt using DIY trunk injection of the fungicide Propiconazole 14.3 using reloadable Chemjet Tree Injectors. The browned leaves drop to the ground. Spray it with Corn Meal Tea). Cornmeal Juice is a natural fungal control that is made by soaking whole ground cornmeal in water at 1 cup per 5 gallons of water. The client declined. Many consider autumn the finest season of the year. By the way, you stumbled upon a very good way of controlling the rust by growing your lilies in biologically diverse groups of plants. He does a second application of propiconizol only when he has recurring symptoms, which is not often. Even if the wound does become infected, if the tree can successfully compartmentalize, it will starve any pests in the wound of oxygen, thus suffocating them. His talk was on the Use of Biologicals and Their Potential for Soil Borne Disease Management. I see now the first article referenced another article from the Dirt Doctor. The publication I first mentioned, page 114, section 5.4.2 Anti Fungal Activity. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Photo credit: Bill Cook. Oak wilt is a vascular wilt disease caused by a fungus that infects the water-conducting tissues of oak trees and causes them to wilt and die. For general information about oak wilt, please visit the Michigan Invasive Species website at . This systemic fungicide contains propiconazole and manages oak wilt and laurel wilt in the oak tree family. I am a great believer in mixing plantings because what one plant takes out another could put back and thereby prevent a build up of particular pathogens and maintain a balance of microbial activity and nutrients in the soil (working in harmony with nature). We had four other sections that developed a lot of rust. I never use any soil amendments, nor any type of x-icides. A photo monitoring study has been developed to capture the progression of oak wilt symptoms. I had the same aha moment he had when I first applied cornmeal to my lawn. The effects were both at the spore germination level and inhibition of hyphal extension. Another quote about this research: A great deal of research has been focused on the isolation, characterization, and regulation of expression of pathogenesis-related proteins since the discovery that several of the PR-proteins had antimicrobial or insecticidal activity and can delay the progression of diseases caused by several pathogens belonging to diverse genera. Note that he said to nurture the soil with a good layer of organic mulch.Yes, that will work, but not because of nurturing the soil. The oaks that died this year must be handled specially. @Nandina, while I appreciate you may have had success with cornmeal, the fact remains that it does not have repeatable, reliable efficacy (as demonstrated in the scientific literature). What I am trying to say is horses for courses and I dont think that anyone is right or wrong here and yes dont hold your breath for a rigorous scientific study cos! USDA. Trenches more than 4 ft deep may be needed to assure control in . Oak wilt foliar symptoms are different from this seasonal transition in that they affect every leaf. Three: no one has published anything (in the scientific literature) showing that adding cornmeal to soil will control fungal diseases. Cannot be sold in CA or NY. Id encourage you to mix up your lily plantings with plants that arent susceptible to rust. It doesnt take much cornmeal, only about 2 pounds per 100 ft. There is no end to what the public will buy, so long as its correctly packaged and marketed. Didnt realize that whole-grain-corn-meal has 23% iron, 1% calcium, only 2% sodium, plus high in B-complex vitamins that boost plant growth. So far, we have been pleased with the results and clients call asking for an annual re-treatment or ask for direction so they can mix their own. It is a highly systemic sterol So, why not purchase some and give it a try. Instead, I would encourage anyone in the South with a fungus problem to give the experiment a try. More than 266,000 oak trees were infected by oak wilt fungus between 2007 and 2016 in Minnesota, making it the second greatest invasive . I followed a discussion on gardenweb and a test someone carried out, using cornmeal and granulated sugar. Protecting Pruning Cuts or Wounds: Trees near oak wilt centers that are wounded or that must be pruned during the most active insect and fungal mat season, should be protected with a wound paint. It is critical to avoid pruning oaks at this time of year to prevent the spread of oak wilt, and should only be considered if there are immediate safety concerns. My fix for cutwormswasps. You dont need ballistics gel or explosives for this one. Technical Description pg.3 Symptoms and Diagnosis pg.5 NPK of corn meal is 1.6 / 0.65 / 0.4 . Personally, I believe theres not enough money in natural organic methods to justify pursuing scientific results, while there is money to be made in the already established chemical solutions on the market today. Linda also is the award-winning author of five books: the horticultural myth-busting The Informed Gardener (2008) and The Informed Gardener Blooms Again (2010) from the University of Washington Press and Sustainable Landscapes and Gardens: Good Science Practical Application (2009) from GFG Publishing, Inc., and How Plants Work: The Science Behind the Amazing Things Plants Do from Timber Press (2015). I know that my fellow GPs and I would love to conduct research on topics of interest to gardeners but someone has to foot the bill. Learn which species of Oaks are susceptible & which are more tolerant. I sprayed my experimental group with the cornmeal spray daily for three days and also sprayed the ground beneath the plants. Cleaner air, carbon sequestration, habitat for wildlife, erosion preventionthe list of environmental benefits an oak tree boasts may surprise some. Residential treatment applications can be confounded by underground infrastructure, driveways, walks, gardens, property lines and many other factors. Ron, if youve read this thread then youve seen my numerous references to pseudoscience. A book/resource named Pathogenesis-Related Proteins in Plants (CRC Press, Dec 12, 2010) by Swapan Datta and Subbaratnam Muthukrishnan talks about anti-fungal activity from proteins. Notwithstanding the hornets nest you kicked? Oak wilt is complex, with a high degree of variability in distribution, severity, and associated management options. Oak Wilt Disease. However, oak wilt will remain in Michigan. But they should not be worked into soil. I divided my infected plants into two groups less than 3 meters apart. I have now tried this as a spray every three days on my 1/2 of Plumeria and Gardenias. I didnt come here to get in an argument of whether or not corn meal works to control lawn disease I came here to point out that you did not bust the myth. How can Scleratinia be prevented in my petunias? BTW Arborists proper are not that common. All trees were stable but all look like they have battled Oak Wilt. *ahem* The reality is though that the truth ( ie one is better than the other) still exists independent of whether or not the fact is published in a journal. If youre interested, my web site http://www.theinformedgardener.com has a horticultural myth section that presents the evidence on both of these treatments. If you prefer the home remedy approach to gardening, youll have to go to the self-proclaimed experts. Mielke, Manfred. No one in my part of the world gives away free wood chips or free mulch. They are also working with Salicylic Acid (active ingredient in aspirin) for SIR effects and several other products and organisms. When maize meal was added to the soil, the growth of C. solani was practically suppressed by T. viride for several days. Be sure to check this link out too.). You can easily find out by reading the who we are section of this blog or reading my c.v. on my web page. If you buy from a good nursery it will cost $20. Containment treatments included quarantine lines in soil for limiting belowground fungal spread and sanitation cutting of 1-3 mature black oak (Quercus velutina) trees within oak wilt . So, I am going to try the corn meal application on the brown patch in my new sod. Skip to content P.O. The answer is YES! I plan to stop spraying with chemical fungicides altogether, and only fertilize with organic products (i.e. That last part sounds a little bit conspiracy theory-ish but its not. Cornmeal Juice can be mixed with Garrett Juice or any other natural foliar feeding spray. Microbes can grow on cornmeal, and in fact cornmeal agar is commonly used in labs as a growth medium for many species of fungi. Until you do, that your words are your personal opinion. With regard to Cornmeal, I might briefly share my anecdotal report. You can also try using commercially available Trichoderma Fungi (do a web search) on those plants that have rusts. Of course, as a retired Professor, I no longer have the Ivory Tower in which to conduct the Perfect controlled tests. Thank you! Tobacco has not been proven harmful scientifically Because it would be an unethical experiment PERIOD, I suggest that NO ONE smoke it might be bad! Linda, there are many issues I have with some of your comments within this threadRight off the bat you stated that the cornmeal myth has been busted, since you are the one that made that claim you need to prove it. per 1,000 square feet. Count (estimate) the population of trichoderma in control and test soils before application of cornmeal, count the populations each day and see if the population of trichoderma has increased in the cornmeal soil compared to the control and possibly compare population of trichoderma to other fungi for comparison. Once an area oak resource has been killed or successfully treated, oak can be re-introduced. Alamo is the industry standard fungicide for the . So far, we have not had to do a second injection on any Live Oaks that have been treated this way. If other tree species are mixed-in, then the visual impact will be significantly less. A tree with foliar symptoms of oak wilt, as well as any non-symptomatic oak tree immediately adjacent to a tree with symptoms, should receive a therapeutic treatment. Its pretty cool how it clings to itself. There may be a hundred other things that cornmeal does to get results we do not understand right now. Cornmeal only works in an organic program. Maybe there is something else going on that has been overlooked or not considered? Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. Our success has been drenching in conjunction with Alamo injection. I too, tripped over this while doing some general research on Google. That said, severing affected roots is an uncommon treatment for oak wilt. About.com is just a content mill and they dont have much of a review process from what I understand. Is Scleratinia carried in potting containers or only in soil (potting or garden soil)? Screen out the solids and spray without further dilution. Should the trunks or logs of these trees remain until next summer, the fungus will fruit and the disease can then be spread overland, to new locations if the logs or firewood is moved. Anecdotal information can direct further research, but it doesnt replace research. Whether or not it follows appropriate protocol, it would be more informative for amateur gardeners to hear that test plots were tried with cornmeal, a volume of organic material concocted using a replicable recipe , fallow, treated soil, or the susceptible crop planted again, with the results provided.. If some scientist thinks they have demonstrated something, it is not their job to prove they are correct. This reality really gets nasty when the behavior of pharmaceutical companies is studied. Tractor and vibratory plow operating in a forest stand. Lots of home gardeners and other nonacademics have contributed to the field, using the accepted scientific method in which to set up the experiment and analyze the results. Im not going to repeat what Ive said before. The two groups are about 20 ft apart and are both in native soil and get the same amount of sunlight and natural waterfall. Jay, there are a variety of recipes for culturing Trichoderma spp. I did use the baking soda and molasses on this rust-prone plant, but that didnt work either. Diluted with water 2 tablespoons vinegar to a gallon of water it can be used to control black spot. Oak wilt kills thousands of trees each year in forests, woodlots and urban areas. I know from these years of experience that using empirical data to educate the public trumps the philosophical constructs of the scientific method, hands down. Provide habitat for wasps and theyll kill off many pests for you. Its pretty simple to set up. Bill Cook, Michigan State University Extension - Compost carbon to N ratio should be equal to or less than 20:1 to assure net short-term mineralization. Not being an academic in the sciences, I would suggest that cornmeal application probably neutralises the the adverse effects of dog urine in the soil. And talk about expensive! Most people, (scientists included) for example base their idea of what foods and substances are safe for humans to eat, and what are not, purely on anecdotes. an assertion regarding the efficacy of a novel therapeutic technique) is false. The bark swells and eventually ruptures from the pressure created by the growing fungus. I wish it had been. Its virtually impossible to prove a negative, as Im sure you know. Starkey, Dale. healthy soil does away with most plant problems in gardenalong with learning how and when to water plantswith healthy watertks to all. Photo credit: Wisconsin DNR. Just tabulating the data from the replies here, it looks like corn meal works every time. The triazole fungicide Propiconazole is effective in management of the oak wilt disease; it possesses systemic and some curative properties against certain fungal diseases. Cornmeal soaks was the only successful remedy. Risk Level: Red oaks are most susceptible and often die within a few months after symptoms appear. Nevertheless, were informed that a gardening personality has continued the study and finds cornmeal effective on most everything from turf grass to black spot on roses. This is directly refuted by Dr. Jerry Parsons, who by happy coincidence is an extension faculty specialist at Texas A&M. At best, an anecdote might suggest a new hypotheses, but it is never used as validating evidence. I have not found cornmeal tea to be an effective control for tomato fungi or black spot on roses. It shows up in the spring and fall when the nights are cool and days are warm. The original Texas A&M studys statement regarding cornmeal was that it increased the population of beneficial fungi in the soil which helped control disease. I understand you cant recommend cornmeal for lawn disease because of EPA regulations but the EPA itself has published a document concerning compost and how it can control plant disease and even insects. Does Trichoderma really like corn for some reason? WTG. With a fruity smell, these mats attract small, sap-feeding beetles that can later fly to a fresh wound of any oak tree and infect it, starting a new oak wilt center.
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