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Georgia

I attached my soil report to my diary. Here is the link:http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=329424. I know my numbers are high, but there is high and then really high. I was hoping that someone facing the same type of report or worse managed to get in a season.

I am leaning towards dividing my patch in to two. Shutting one side down, and planting mustard now then solarization during July/August, then backing it up with another planting of Mustard in the fall. Then, trying to grow something in the other patch using an assortment of fungicides to try and keep things at bay.

3/14/2022 1:04:47 PM

On a cliff in the desert

Rick J. and Joe Ailts have used an expensive chemical to treat disease in their patches.

3/14/2022 3:05:44 PM

Plymouth, MN

How many years have you been growing in the same spot? I think there was a conversation in the chat the other day about a pH based disease treatment, but I don't recall what the product was. Could look into the Paton steam sterilization method if you've got the $ to burn.

3/14/2022 4:21:17 PM

Watlington, UK

I think your plan sounds good, I'd try something similar in your position. Make sure you till the mustard in as soon as you cut it, and you have to really smash it up to break open the cells which releases the fumigant gas. Adding water completes the reaction.
Spanish tomato growers use solarization to good effect during the summer months.

3/14/2022 5:03:12 PM

Bethlehem CT

This might be worth a shot, I had never heard of it before doing a little research for you.
https://blog-fruit-vegetable-ipm.extension.umn.edu/2018/12/managing-soil-borne-diseases-with-asd.html

3/14/2022 5:11:45 PM

http://www.bigpumpkins.com/msgboard/ViewThread.asp?b=27&p=716515

Take a look at the link I posted in this thread and also look up "beneficial anaerobic microbes". To me it seems to be along the lines of the link big moon posted. Organic growers are using anaerobic germs as long as they are the good anaerobic germs. You can buy the mother culture and make gallons of it yourself. DYDD first.

3/14/2022 6:51:34 PM

Georgia

I know one of the products that Rick used was Miravis which he got a hold of from a fellow grower. The stuff literally only comes in 2 gallon bottles and retails for 1k. I like the hobby, not that much. lol

3/14/2022 8:10:56 PM

Prestonsburg,ky

Orange are you coming to the southern growers meeting?

3/14/2022 9:57:10 PM

stoughton WI

miravis neo, its about $450 for 2.5 gals. or try rhyme fungicide.

3/14/2022 10:18:31 PM

Grittyville, WA

I'd want to know if any of the disease was related to something I was doing or something I was adding to the patch. I would try Rootshield and a phosphite product.

Something else you could try, I dont know if it would work, but maybe you can try planting a few more seedlings and check to see which handles your soil best. Use the range of genetics you can throw at it to your favor. Thats part of the reason I sometimes use unsterilized garden dirt in my seedling mix... I want to plant out something that can perform in the real world.

3/15/2022 12:24:10 AM

Grittyville, WA

^ This is a great way to draft some pumpkins up from the minor leagues... use some seeds that wouldnt otherwise see dirt, it gives them a chance to show they deserve to be on the roster with the Major League seeds. In other words, you could put the best of a bunch of minor league seed planted in garden dirt vs your big league seed planted in fancy potting mix. Plant them both and run them side by side for as long as possible and see if the Major Leagues seed was worth what you paid or if the minor leagues seed has what it takes. You dont really risk more than necessary by doing it this way.

3/15/2022 12:38:26 AM

Ireland

Im sure you can get a cheaper product with the same active ingredients as miravis neo at a much cheaper price. Azoxystrobins and propiconazole are widely used active ingredients in lots of fungicides used by cereal growers over here.

3/15/2022 8:17:31 AM

Kutztown, PA

Ok - I've been reviewing lab reports of all kinds for over 30 years. Whenever I see a result that is extreme in any direction I have the substance retested. The labs are not "God" and often make mistakes due to bad math, inexperienced analysts, equipment issues, and other reasons. I would get the soil tested again for that particular parameter. I would also send one sample to the same lab and one to a different lab for confirmation. When levels seem extremely high or low, often times the laboratory analysis results are wrong. Don't hang your hat on one test.

3/15/2022 10:31:41 AM

Georgia

Each disease test is $145, Garwolf. I am going to trust western. Twinnie, strobins are relatively generic with many cheaper options like Heritage. However, Miravis adds Pydiflumetofen, which is still controlled by Syngenta and there is no cheaper version. There was a great article recently about Pydiflumetofen being fantastic on controlling fusarium in watermelons.

3/15/2022 10:46:21 AM

Georgia

Dwight had not planned on going to the growers meeting. I did receive a nice hand written invitation to attend with a recent seed purchase. I will look into it.

3/15/2022 10:50:19 AM

Grittyville, WA

Rmen's latest post is relevant. I didnt know this was possible on a patch-size scale. Watch out though because that high strength H2O2 is basically the same thing as rocket fuel. His greenhouse could do the Hindenburg thing with that much oxygen in it.

http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=329431

3/15/2022 1:59:02 PM

valtierra/spain

Yes, I have been using peroxide for a long time, during the season, at low doses. To oxygenate the soil somewhat. Also last year I used peroxide in winter, but only 4 bottles, it was insufficient. Keep in mind that peroxide, if the treatment is correct, eliminates all fungi, both bad and good. Then you have to let it act for a while, until the ground dries, and then begin to colonize the soil with beneficial fungi. I have read several studies, perhaps the most relevant is this (It is in Spanish, but you can use the translator). The peroxide in greenhouses of strawberry cultivation in Spain, was 100% effective with high dose treatment. If a lower dose is used, it may not be 100% effective, but the colonies of pathogens are eliminated.
http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0187-73802014000400012

3/15/2022 2:35:37 PM

Lymington UK

I've talked to Ruben Mendip for you and he will post the use of hydrogen peroxide.
The European growers are having very good success with the chemical. Before we dug our patch we used it to help clear the fusarium problem but I hadn't managed to get it on my diary
Ian

3/15/2022 2:49:09 PM

Georgia

Thank you for the posts Rueben and Ian about the peroxide posts. It it my understanding that Jeff Theil had good results with Terra Clean 5.0 which claims to use an oxygenation process. I wonder the Terra Clean 5.0 is just a commercial form of what Ruben does?

I look forward to studying your article Ruben.

3/15/2022 8:22:22 PM

Glen Allen, VA

I will chime in with my recent experience with propiconazole since I saw it mentioned above. I will never use it again. I was using it last year in granular form as a preventative for soil borne diseases. The plant never grew and the following cover crop would not grow where I used it. A google search after the damage was done showed that is also a plant growth regulator. I think other fungicides in this same group (3) are also growth regulators so be careful.

3/15/2022 8:39:48 PM

Lymington UK

Yes. I totally agree, you do have to be careful as several fungicides are actually used in the trade as PGR’s (Plant Growth regulators) but they are not sold as such.

3/16/2022 3:16:58 PM

Georgia

Just found the research that dpriceute and IanP mentioned and they are spot on:

Demethylation inhibitor fungicides [also known as sterol inhibitor fungicides, belonging to the Fungicide Resistance Action Committee (FRAC) Code Group #3 (FRAC, 2012)] are widely used.

Unfortunately, DMI fungicides have long been known to cause unintentional PGR effects when applied to foliage or applied as a soil drench that is ultimately translocated upward to plant crowns and leaves.

FRAC Group #3 active ingredients that are currently registered for use in the United States include: fenarimol, myclobutanil, metconazole, propiconazole, tebuconazole, triadimefon, and triticonazole.

3/16/2022 11:33:33 PM

Mission Viejo, CA

I likewise have a patch full of disease. Had a great conversation with the agronomist from BioSafe yesterday. Terra Clean 5.0 and Zerotol sound similar to the Hydrogen Peroxide treatment that Ruben is doing. Zerotol has been used for spot treating rot by the giant pumpkin community for years. Terraclean is the commercial grade version; Zerotol is for smaller operations. Gennerally, the same ingredients in different concentrations. Apparently, it is also used as a soil drench to treat disease. I am going to give this a shot this year. Like Ruben says, this kills the good stuff and the bad stuff. The good news is the waiting period for starting inoculation after application of the Hydrogen Peroxide treatment is very short as it doesn't stay in the soil. I am going to try Biosafe Terragrow as the first step to restoring the beneficial microbes.

I did a disease test at the end of last season and will do it again after treatment and post the results to my diary.

3/17/2022 11:27:25 AM

Torrance, Ca.

I like what KC Kevin said.:)

And if Ruben is doing it, it must work!

3/21/2022 7:53:46 PM

Torrance, Ca.

I like what KC Kevin said.:)

And if Ruben is doing it, it must work!

3/21/2022 7:53:46 PM