Re: A possible solution to fusarium wilt


Title: Re: A possible solution to fusarium wilt
on 11/30/01 3:28 PM, John Failor at buckeye5@bright.net wrote:

Hello to all,

   I have been signed off the group for some time but my love of pumpkin growing couldn't keep me away for two long. For the past 3 years my pumpkin plants have been devastated by fusarium wilt which is a fungus that attacks and kills pumpkin roots. I tried many new products this year with no change whatever. I had pretty much given up on the idea of growing pumpkins in this infected soil utill a few weeks ago when I was walking through my orchard. I noticed that some of the older fruit trees show pronounced marks on their lower trunks where they were grafted when young seedlings. They are commonly grafted onto roots of more hardy or disease resistant trees. Then I thought why couldn't I do this with pumpkins??? maybe it would avoid fusarium???

   Even though all Atlantic giants I planted in my soil this year died from fusarium not a single regular pumpkin, butternut squash had died. And only 15% of my prizewinners and old heirloom giant pumpkins had died from the disease. So why couldn't I graft the AG's on these or other rootstocks?? I looked it up on the internet and the technique is possible at less than a week old. Now that I know it is possible I have a few questions left that some of you out there may be able to help me with:

1. Are AG's(C. maxima) graft compatible with regular pumpkins and butternuts(C.Pepo and C. moshata)?
2. And if they are would their rootstocks have a dwarfing effect on the plants or would the vine roots compensate for this?
3. Would the disease also attack the vine roots?(I have never seen the disease attack vine roots only up from the main stump)
4. What root stocks would anyone recommend?   Which C. maxima plant gets the biggest? Would banana squash or maybe hubbard work??

Thanks for any advice!!
John
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Boy is this uncharted waters...i can't think of any annuals that have been grafted but sure there are some.

I would imagine that you would have to use a  C. Maxima.

I also think that  any vine roots  would be infected  and it might appear they don't because they haven't been in the ground as long as the main root.

Seems that alot of the cultural tendancies that we have used in growing AGs also promote the populations of fusarium, wet soils , excess ferts......poor drainage...etc...

Root stocks are choosen for aggressive rooting and resistance to desease.  Resistant to desease is based on survivors.  Plants are infected on purpose then chosen.  Seems like you have a good ground to look for resistant AG'S...............I have a very limited supply of seed that i think has shown some resistaince you might try.

Also you have to really look at how you treat your AGs different than your other pumpkins that seem to make it.  Are your AG practices enhancing the fusarium population.........

just some thoughts

MB




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