You dont know that it works, youve described two independent events without any proof that one is the causative agent of the other. I have been reading these thresds with interest. Don't paint or dress the wound on the tree; it will heal best on its own. Its a Catch-22: outside money is absolutely required to carry out substantial field research at universities, but when someone donates the money then scientists are often accused of being in the pockets of whomever funded the work. Also, other oak health issues can mask oak wilt, such as delayed drought effects and the two-lined chestnut borer. A barrier should be at least four, and prefer- ably five feet deep. In most areas, these are free. It mentions oxysporum specifically. Seriously, I read a great many of the comments and I thoroughly enjoyed watching how Dr Scott has stayed on point! It wouldnt be patentable and it wouldnt be able to compete with grocery store/costco corn meal in most places. 2010). A note: we do very few injections for Oak Wilt, so this is not much of a survey. The oak wilt fungus requires live tissue to survive. 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. Your claim is that their anecdotal evidence is false. We have documented single-pass treatments on heavier soils in hilly terrain, but we need to capture how effective the single-pass is on sandy soils in flat terrain, and then compare it to the double-pass system," said . a research university. Angela: I will be very interested in the results of your trial. Corn *gluten* meal has about 10% nitrogen. Advancing the science of gardening and other stuff since 2009. I dont object to your arrogant untested (by you) ranting, but you would have a lot more credibility if you started the rant with, I just completed a test which shows (And believe me this is an easy test to conduct.) I happen to use corn meal in my lawn in the spring and have found it to be effective for me. Hi, always i used to check weblog posts here early in the morning, because i like to What the heck? It can be found in MN, NY, Tx, IL, OH all together 21 states are infected. I dont need a scientific study to tell me if this works or not. So unless theres a big conspiracy among all the plant and soil scientists in the world to somehow hide the fungicidal wonders of cornmeal, thats where the science currently stands, and thats what informs my recommendations. The susceptible fungi included Phytophthora infestans, Candida albicans, Neurospora crass, Trichoderma reesei, Trichoderma viride, Verticilium albo-atrum, Verticillium dahliae, Cercospora beticola, Fusarium Oxysporum, and Alternaria solani and included fungi belonging to the classes Oomycetes, Hyphomycetes, and Ascomycetes. Fertilization is the most expensive cultural practice for the increasing numbers of organic vegetable growers in the United States. I would encourage you to read the Wikipedia entry on it: http://en.wikipedia.org/wiki/Pseudoscience. Ill ask you to stay off my grass after that. Ron, if youve read this thread then youve seen my numerous references to pseudoscience. The document says This enhanced, natural biological control process is almost identical to the processes that occur when crop rotation is practiced. Applying yellow corn meal to peanut crops is clearly not the same thing as rotating corn and peanut plantings each year. 4, p. 431-441. However, it is expensive either way. Trenching as a Root-Graft Disruption Treatment for Oak Wilt bySteven Pregler To prevent the spread of oak wilt, it is recommended that severing the roots between infected and healthy trees be part of the overall management plan. University of New Hampshire Extension Office. So all we have is hearsay and old adages to rely on in our organically orientated world. thats better than horse manure NPK of 0.44 / 0.17 / 0.35. 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. Red oaks often die within four weeks of the first symptoms. 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. Yet, there are some who swear it works. Everyone trying to do the environmentally friendly-to-a-fault thing have been wasting their money. Does that mean, for example, that prior to the study of physics and the effects of gravity on the earth air bubbles actually sank in water while rocks were buoyant? Even Einstein has been trumped on occasion , Now Im on to researching tea-tree oil for my toenails! I have tried a lot to get rid of those spots with no avail. An oak wilt contamination can be more easily contained when treatment begins early. I followed a discussion on gardenweb and a test someone carried out, using cornmeal and granulated sugar. Plus, the shill accusation is hardly a credible argument for your case. Nancy, thanks for reporting back on this. Materials evaluated include seabird guano, liquid fish, feather meal, corn meal (Zea mays), blood meal, and liquid soybean meal (Glycine max) among others. Success with therapeutic treatments is better when less infection is present. Fungal mats will form under the bark and force outwards, cracking the bark of the tree. WTG. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. (Keep in mind Genes experience about a single treatment being effective and all that is needed). Since youre a well respected researcher in this field why not reach out directly to the person that did the study instead of Dr. Parsons? Theres no publication on the species you mention and zeamatin. Following the vibratory plowing, all the oaks within the perimeter must be removed. Then wed head over to the bunny hutches, scoop up a couple shovels of poo and spread it in the garden! Linda Im pretty sure something is wrong with you! Any new wound can be an entry point for infection including those produced by pruning, construction activities, livestock, land or cedar clearing, lawnmowers, string trimmers and storms. By the way, you stumbled upon a very good way of controlling the rust by growing your lilies in biologically diverse groups of plants. The first time I used it I was blown away. It sounds like theres some really bad root knot nematodes in the south and the mixture of cornmeal helps treat those areas. You might be able to get the local Tree guys to give you wood chips assuming they are small enough to work into the lawn. Avoid wounding oaks during vulnerable seasons. In response to those who believe that corn meal is a fertillizer: there is only one paper published on this topic. He also frequently comments that he uses cornmeal on his lawn as well as to control black spot on roses and it seemed you were talking about him in part of your article. Wish me luck . Lab tests related to that later discovered the beneficial organisms in cornmeal were as effective or more than chemical fungicides at shutting down fungal diseases. BTW, cornmeal is really great for feeding snails, so if you want healthy snails in your garden or greenhouse, just try Tbsp. Oaks in the white oak group (those with rounded leaf lobes) such as white, bur, post, and swamp white oak are less susceptible. . Oak wilt is a vascular disease of oak trees, caused by the fungus Bretziella fagacearum*. Some new stuff from Garden Web June 2014 about cornmeal: http://forums.gardenweb.com/forums/load/rosesorg/msg06133133411.html?22. In 2018 Linda was featured in a video series The Science of Gardening produced by The Great Courses. I am quoting someone else. Sound good? Oak wilt is one of the most destructive tree diseases in the U.S., killing millions of trees in 76 counties of Central, North and West Texas. Stop fungi from ruining trees on your property with Alamo Fungicide, a preventative and treatment option with lasting results. There are over 23K members, many of them with professional expertise in pesticide science. All inventions/discoveries are first ridiculed. Posted by Strawberryhill 5a IL (My Page) on We also used Nutri-Cote fertilizer. How about people used to take mercury & kids played with it in school. Ill report back in 6-12 months. For more information on ice damage and oak wilt, visit Ice Damage and Oak Wild. It wouldnt be profitable for someone to spend money to research if corn meal would be profitable or not in many cases. The SM is supposed to build upon and improve itself, but that isnt possible if it denies a flurry of anecdotal evidence that something claimed is viable. In each lot, you will have a control lot without cornmeal , and cornmeal application of 1 oz , 2 oz, 3 oz,.9 oz to each of the remaining 10-sq-feet-lot. Although you can prune at any time of year, the best time to prune oaks is July through January. should be growing in the soil. The fungus disappeared from the soil within 120 days when associated with wheat, oats, barley, or maize replanted every 21 days, but persisted for 170 days or longer in soils planted with potatoes, beans, or peas. Cleaner air, carbon sequestration, habitat for wildlife, erosion preventionthe list of environmental benefits an oak tree boasts may surprise some. In my opinion, just using the Trichoderma is not reliable. Im sorry to report that the combination of corn meal juice and cornmeal worked into the soil was not effective against the daylily rust. You cant sell compost as a pesticide/fungicide or market it as such but most people understand that using compost can solve these problems. Her latest effort is an update of Art Kruckebergs Gardening with Native Plants of the Pacific Northwest from UW Press (2019). http://ps.oxfordjournals.org/content/63/8/1516.abstract, Jaymee, that article simply reports on the types of fungi in cornmeal. I am planning on doing an update on this topic tomorrow, if for no other reason than to stop adding to this thread! The triazole fungicide Propiconazole is effective in management of the oak wilt disease; it possesses systemic and some curative properties against certain fungal diseases. Fungicide injections are available to protect healthy trees. With one exception, I do not find in your replies in this thread any encouragement to field research; however crude and well intended (and ultimately, worthwhile) it might be. Respectfully, gardening has a long history of traditional practices being debunked by scientists only to be later validated by other scientists. sized heaps of cornmeal in the pots or on the ground. Russsell, Matthew. At the 2017 ITC in Columbus OH, Dr. Glen Percival presented another study in which Trichoderma suppressed Armillaria. My fix for cutwormswasps. Risk Level: Red oaks are most susceptible and often die within a few months after symptoms appear. When yellow corn meal is applied to fields in the presence of moist surface soil, Trichoderma builds up very rapidly over 5 to 10 days. You dont have to do anything special to encourage its growth, other than to provide sufficient organic matter. So far, we have not had to do a second injection on any Live Oaks that have been treated this way. And the Wikipedia defense lame. The pancreatic cells that produce insulin may also do hundreds of other things we have no understanding of yet, The DEBATE is over for global warming!!! Good luck and if it does not work for you, then that will be valuable info also! The good news is that oak wilt is preventable and treatable. It develops under the bark, and, in advanced stages, causes a white rot decay that contributes to tree mortality, compromises the structural integrity of the tree, and makes it a danger to life and property. In the following you might also notice sap beetles. This morning, I ordered 150 pounds of agricultural cornmeal, which I will apply to my brown St. Augustine grass every few weeks. When maize meal was added to the soil, the growth of C. solani was practically suppressed by T. viride for several days. 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. *ahem* All the bickering does not matter. While red oaks play a key role in the establishment of new disease centers, live oaks and white oaks can also move the oak wilt through root grafts. I would need to apply products that would suppress or eliminate rust. ), (Another footnote: I discussed this myth more in 2012. That is why the research that is done is coming out of Europe and Great Britain where agrochemical use is so restricted. Be sure to check this link out too.). If an oak gets injured during that time period, you should support the tree in its healing by minimizing stress wherever possible. One thing I would bet is that Food as eaten by Americans kills a LOT MORE than tobacco. There is still no published evidence supporting a fungicidal role for cornmeal.. It works because the mulch prevents rain from splashing dirt (laden with leaf spot spores) onto the leaves and causing infection. Damage to oaks from residential activity should be avoided during this time period, especially pruning. The scientific method might have its flaws, but like it or not, thats what weve got. As additional precautions, do not store fresh firewood near your oak trees, and cover the firewood tightly with tarps. Nothing Ive seen has refuted the TAMU study and the Iowa study that led to the discovery of pre-emergent herbicidal properties has a bit in it to suggest that cornmeal might have prevented the establishment of a different lawn pathogen. Oak Wilt is not known to occur in Oregon. My goodness Linda how pompous, whether you are right or wrong. From my reading, including an EPA document about compost and its use in bioremediation and control of plant pathogens compost can be tailored in different ways based on the needs. I have also used cornmeal in the garden with excellent results and I have been gardening for 30 years. Corn gluten meal, yes. The nice thing is that it costs almost nothing. I so appreciate the rant you give for the myths that is so commonly spread around the use of cornmeal as a fungicide! 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. Just tabulating the data from the replies here, it looks like corn meal works every time. 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. Mielke, Manfred. Because the roots of oak trees are often grafted together and can extend hundreds of feet, oak tree diseases can spread quickly. You mean like you not correcting where you said the experiments with cornmeal also involved crop rotation? That means no pruning during those months, and careful maneuvering around oak trees with your lawnmower and other power tools. Very interested in the morning, i ordered 150 pounds of agricultural cornmeal, which will...: http: //en.wikipedia.org/wiki/Pseudoscience, using cornmeal and granulated sugar the other 0.35... Symptoms appear give for the increasing numbers of organic vegetable growers in the south and the two-lined borer... 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