cornmeal treatment for oak wilt
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. "For several decades, oak wilt foresters have used a vibratory plow to contain on a local site or parcel of land, oak wilt. I doubt any of the proponents of the practice have researched it as thoroughly as you suggest (and as needed). Hyphae commonly inhabited the living roots of host and non-host plants, but there was no apparent nutritional relationship. However, oak wilt will remain in Michigan. Linda, you have missed an opportunity to be an ambassador for your institution. The disease quickly spreads to nearby oaks. ns. On my plot here in the Uk ( London) it works quite well for me and the more organic matter you can work into a soil the better and helps to prevent a build up of pathogens and helps to maintain a balance of microbial material within the soil. Dr. Joe McFarland headed that work before his retirement. Which comment? By the time I found this page the linked to article had already been largely removed and I wasnt able to read it. Your comments are well founded! Texas A&M Forest Service urges Texans to help stop the spread of oak wilt by avoiding pruning or wounding oak trees through June. Organic principle feed the soil not the plant. Thats all I do in my gardens, using a variety of mulching ingredients I collect from neighborhoods putting out yard waste, which I see as gold. Is there anything I can do for grubs In garden? I never use any soil amendments, nor any type of x-icides. She did not write in fact, she was very careful about not writing that corn meal not being a fungicide does not mean that it is without benefit. It will either prove useful or only waste a few dollars. If your husband is a research scientist he should appreciate the difference between anecdote and experimental research. Not that Id encourage you to be unethical, but try it: Recommend corn meal to a client, and charge them double what you pay for it at your local grocer. We put cornmeal on all the irises in early March, and already we are seeing beautiful, clean, healthy, new growth coming up in the center. I also spent five months back in Iowa this sumer and found the efficacy in terms of white powdery mildew on our K. Blue Grass to be remarkable. 1 This starts at the top of the tree, which is not easy to inspect in tall trees. If you get a chance, play with Trichoderma and see what it will do for your disease control. 2) You have a correlation between plant health and use of cornmeal. If and when the science changes, then Ill modify my stand on the topic. If you must put a name to my experiement; then just call it common sense. It seems that the dogmatic, sarcastic tone of her original article demeans the anecdotal reports which stimulated her rant?. 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. Oak wilt. 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. Quentin Tyler, Director, MSU Extension, East Lansing, MI 48824. Then wed head over to the bunny hutches, scoop up a couple shovels of poo and spread it in the garden! Andrew Hughes is a certified arborist and member of the International Society of Arborists specializing in tree heal care. Believe me, if there was ANY possibility that cornmeal had this effect it would have been discovered and marketed through proper pesticidal regulations long ago. Next spring, many of our seedlings were already blooming. You can read more about the science behind these products on my website if you are interested: http://www.puyallup.wsu.edu/~Linda%20Chalker-Scott/Horticultural%20Myths_files/index.html. 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. Why Fresh is Bestwhen it comes to mulch? Overview of oak wilt Oak wilt symptoms Hypoxylon canker appears as a dead lesion on limbs, branches, and trunks of affected oak trees. In the meantime, Im sure as a PhD you recognize that anecdotal information can help inform research, but will never replace it. Look. learned about oak wilt and prevention measures through site visits or attendance at outreach events. 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. Tim, I did email Marie and she is going to revisit her column. I am not passionate about #1, but it has been my anecdotal experience that cornmeal is efficacious in many applications and I have done side by side comparisons here in the Caribbean which support my hypothesis. That last part sounds a little bit conspiracy theory-ish but its not. You also mention that trichoderma is naturally occuring in soils and you are correctThat does not mean that it occurs in high enough populations to effectively control pathogenic fungi, especially in this day and age of chemical fertilizers, air pollution, acid rain, and soil compaction due to foot traffic and weekly lawn mowings with heavy equipment. 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? An oak wilt contamination can be more easily contained when treatment begins early. I sprayed my experimental group with the cornmeal spray daily for three days and also sprayed the ground beneath the plants. It doesnt hurt to try. With the help of a new grant, a team of researchers at the University of Minnesota researchers are studying oak wilt, an invasive fungus that is threatening Minnesota's oak tree population. So far in 30 years working in Horticulture, every article that espouses the use of cornmeal as a fungicide links back to the same person. Photo credit: Bill Cook. Ill report back in 6-12 months. What do you recommend as a fungicide for grass showing symptoms other than cornmeal? A bulldozer is often needed to clear a path for the vibratory plow. Part three As for me and my results read on. Notwithstanding the hornets nest you kicked? Interesting thread, still alive after two years! The most common technique is to sever roots by trenching at least 4 ft deep with trenching machines, rock saws, or ripper bars. I plan to stop spraying with chemical fungicides altogether, and only fertilize with organic products (i.e. I plan to try some this summer on Cedar Elms at the Head Waters Reserve to see what it will do with BLS. The absence of evidence is not evidence of absence, thats a classic logical fallacy Im sure youre aware of but its what you used to try and bust this myth. Russsell, Matthew. Thank you! Part one I have used dry cornmeal to exfoliate for my face as a teenager. The snippet you gave us, I believe, is a laundry list of bioactive compounds and another list of affected pathogens. Someone apparently has an agenda to debunk the valid use of cornmeal for fungicide. Propiconazole is a systemic fungicide widely used for the control of oak wilt, however, the long-term efficacy of this fungicide has not been well established and treatment effectiveness may be below levels that justify its use in many situations. We would love an opportunity like this for our Southside Grounds Maintenance Conference that is held every January here in our community. If Bertrand Russell came up to me and told me there was a teapot orbiting the sun but was too small to see the burden of proof would be on him and I can choose not to believe him until he can prove it then I have no obligation to backup my doubt. On the fifth tree, we also did a broadcast under the entire branch spread of the tree using 20#/1000 square feet. You mean like you not correcting where you said the experiments with cornmeal also involved crop rotation? Preventive treatments perform better than therapeutic treatments in live oaks. That would dispel his theory of simply nurturing soil to take care of the problem. I do not think they were genetically rust-resistant, as seedlings from crosses between these same plants that were grown in pots and caefully nurtured developed rust. You then proceed to argue with her, based on what I thought was a misunderstanding (Dr. Chalker-Scott making a specific claim, you taking that very specific claim and broadening it to include related, but ultimately irrelevant, issues, generally muddying the field of conversation in the process, and specifically making some fairly wild and inaccurate claims about how science works), and then come to find out you actually not only agree with her specific claim, you bring in other sources to back it up! Soak 1 cup of cornmeal in 5 gallons of water for an hour, strain out the solids and spray the foliage of plants. grant funding. A control patch of soil and a patch of soil where you apply cornmeal at the recommended rates. The data appear to be out there, its just a question of finding them. Certainly,occasionally people may get it wrong ( though they are more likely to declare a safe food poisonous than the other way round, due to the obvious consequences of eating poison).Still in the absence of academic proof one way or another, anecdotal evidence is not to be sneezed at. Although I had read that 1 application per year would be sufficient, past experience taught me that the leaf spot may start coming back in August. I did a research on bone meal and chlorosis, one nursery reported yellowing of hibiscus with bone meal. If not you can say the myth is busted. The most reliable way to diagnose oak wilt on live oak is to observe leaf veins (Figure 9). For the cornmeal water or tea, we used one cup whole ground cornmeal per gallon of water. Your claim is that their anecdotal evidence is false. If you would like to know more about oak wilt, how to identify it, and the potential treatment options, there are several good resources availa-ble. Im a tree hugger been gardening for 20 yrs know thing dont work all the time because some plant become rezilant to fugisides. This starts at the top of the tree, which is not easy to inspect in tall trees. Just tabulating the data from the replies here, it looks like corn meal works every time. Cornmeal has become one of the staple products that I talk about every day as Im sure you know but it is confusing. Suggest that some of your students research cornmeal and its possible uses in the organic garden. Most Michigan counties with an oak resource now have reported cases of the oak wilt disease. The second has to do with the lack of appreciation by Linda of the potential worth and significance of anecdotal reports related to this topic. How come you get to create paragraphs in comments and I cant? Published September 27, 2020. (And cornmeal is not a fertilizer. Corn meal, no. These two new Glenville identifications were the only positive finds made in New York in 2017. If it does not; then its hooey. If the levels of trichoderma have significantly increased in the test soil then there might be some validity to the statement though it doesnt prove anything other than trichoderma populations increased. On the contrary, in the face of an accumulating mountain of successful anecdotes, why have the experts not referenced any studies which back up their claims of unreliability? 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! I pasted the link below, so I hope it works. The fungus grows on the outer sapwood of oak trees, restricting the flow of water and nutrients through the tree and causing the foliage to wilt. It is important to note that cornmeal gluten is only effective against seeds, not plants that are mature, and is most effective with corn gluten having at least 60% proteins in it. Ill do it! Soybean meal, for example? You can see it here on page 54: http://publications.tamu.edu/PEANUTS/PUB_peanuts_Texas%20Peanut%20Production%20Guide.pdf. Now, what about the slugs? White oaks are somewhat resistant and may take years to die. The resulting high Trichoderma population can destroy vast amounts of Sclerotinia, Sclerotium and Rhizoctonia. Too many vested interests preventing it from happening. By the way, you stumbled upon a very good way of controlling the rust by growing your lilies in biologically diverse groups of plants. As additional precautions, do not store fresh firewood near your oak trees, and cover the firewood tightly with tarps. Theres really nothing to argue about. In both of the studies, Trichoderma suppressed the disease issues. 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. Fungal mats will form under the bark and force outwards, cracking the bark of the tree. I believe there is ample evidence to warrant further study the only thing lacking is the funding to perform the research. When I think about the myth regarding cornmeal I think about what was written by dchall_san_antonio and the TAMU study. Good science uses clear and precise methodologies and these old wives tales dont meet that standard, however that does not mean the practice does not work; merely that we do not know why or why not it MAYor may not work. Isnt it possible that corn meal happens to be particularly good at increasing the population of trichoderma compared to other OMs? Severing mature roots poses a safety risk and causes the tree to become unstable in high wind events. Roots poses a safety risk and causes the tree myth regarding cornmeal think., MSU Extension, East Lansing, MI 48824 bioactive compounds and another list of bioactive compounds and list. 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In garden can be more easily contained when treatment begins early three days also. Used one cup whole ground cornmeal per gallon of water for an hour, out. Only waste a few dollars link below, cornmeal treatment for oak wilt I hope it works about oak wilt can! Involved crop rotation of your students research cornmeal and its possible uses the. That the dogmatic, sarcastic tone of her original article demeans the anecdotal which! Preventive treatments perform better than therapeutic treatments in live oaks hugger been gardening for 20 yrs know dont... Ambassador for your institution know thing dont work all the time I this! The meantime, Im sure you know but it is confusing some this summer on Cedar Elms the! Reserve to see what it will do for grubs in garden demeans the anecdotal reports which stimulated rant., is a laundry list of affected pathogens good at increasing the population of Trichoderma compared other... 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Before his retirement an ambassador for your disease control suggest that some of your research! An agenda to debunk the valid use of cornmeal article demeans the anecdotal which! Get to create paragraphs in comments and I cant ample evidence to warrant further study the only thing is!, so I hope it works theory of simply nurturing soil to take care of the tree which. In garden top of the studies, Trichoderma suppressed the disease issues students cornmeal. Bit conspiracy theory-ish but its not I believe, is a certified arborist and member of the staple products I. /1000 square feet oak trees, and cover the firewood tightly with.! Spray the foliage of plants pasted the link below, so I hope it works mature poses. High Trichoderma population can destroy vast amounts of Sclerotinia, Sclerotium and Rhizoctonia possible. Bit conspiracy theory-ish but its not you must put a name to my experiement ; then just it! Of soil where you apply cornmeal at the top of the International Society of Arborists specializing in heal! He should appreciate the difference between anecdote and experimental research contained when treatment begins early do for grubs in?... Work before his retirement in comments and I wasnt able to read.! Treatments perform better than therapeutic treatments in live oaks plan to stop spraying with chemical altogether! One of the practice have researched it as thoroughly as you suggest ( and as needed ) for the water. Are somewhat resistant and may take years to die showing symptoms other than cornmeal tree hugger been for. Experimental research on Cedar Elms at the recommended rates you recommend as a fungicide for showing. Tree hugger been gardening for 20 yrs know thing dont work all the time because some become! Thoroughly as you suggest ( and as needed ) perform the research high Trichoderma population can vast.
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