From

Location

Message

Date Posted

Pumpkintown, SC

I had several this year. Is it genetic or germination related? Thanx, BF

6/11/2005 10:28:26 PM

Indiana

Some sort of environmental control......either that or the wrath of God?

Tom

6/12/2005 1:31:26 AM

Hilpoltstein, Bavaria, Germany

Can someone please post a pic of a "club root"? I don't think I ever had one and would love to see one...

Martin

6/12/2005 5:01:38 AM

Montoursville, PA

Quoting: INSECT DISEASE AND WEED ID

CLUBROOT IS A FUNGUS

CLUBROOT common disease of vegetables. Plants wilt and look stunted, roots have swollen, spindle shaped galls. Plants severly infected, all main roots may be swollen into a mass of large distorted galls.

LIFE CYCLE: Overwinters as resting spores in decomposing roots and the soil. Can remain dormant for at least eighteen years. They germinate in spring into mobile spores that swim in the water found in the soil around susceptible roots. Once inside the root the growing fungus stimulates root cells to grow adnormally.

TRANSMISSION: SOIL, WATER, MECHANICAL

PREVENT AND CONTROL

Avoid importing clubroot by growing your own seedlings in clean soil. Once clubroot is present the key to controlling is maintaining soil PH at 7.0 with adequate levels of calcium and magnesium. Maintain excellent drainage and fertilize with well aged compost to increase populations of beneficial soil microorganisms that supress clubroot. Aerobic tea is a goes with support process. Rotate crops at a minimum of seven years. Dig up stunted plants to check roots: if clubroot is present, dig out and burn as much of the roots as is possible.

6/12/2005 10:41:57 AM

Montoursville, PA

OOPS..........MISSED A DANDY

HOST PLANTS: Cabbage family crops and related weeds; also doc, bentgrass, orghardgrass and ryegrass.

Yep..ryegrass!!!! Change cover crops.

6/12/2005 10:48:18 AM

Montoursville, PA

Martin.......Clubroot gives so many different disconfigured looks I do not know if a picture is better than words, in this case. I have no pix. Maybe someone else will find one or several that will illustrate the knotting and knurling and gall. You may not need to worry as the range stated is US and Southern Canada.

6/12/2005 10:51:15 AM

Ohio

Doc, good reading,I had no idea it was caused by a fungas.

Ps. Hows the plants doing Doc? I sent ya several emails that came back,you change emails?

Brooks

6/12/2005 12:06:19 PM

Montoursville, PA

Brooks.........sending you an E. The addy on that E is in my address and cleared for any incoming use file.

6/12/2005 12:23:57 PM

Ontario, Canada.

doc, that is good evidence. I am not sure it is the only cause of club like roots. Many out there have reported club like roots when the seedlings are still in the pots. It should not happen in freshly sterilized potting soil. if you have any of these above-ground symptoms, stunted plant growth, yellowing of the lower leaves, and wilting and death of the plant. Then I would agree.

Drews case with his 723 Bobier plant may in fact be something hormone(PGR)related.

6/12/2005 12:31:15 PM

Montoursville, PA

I did not say he had clubroot. He did. I trust his experienced eye and report. There is no other cause of clubroot.

Some roots split and run around a stone or other obstruction but without the galls it is just a growing happenstance. Carrots do some pretty funny growing tricks that may be read improperly as clubroot.

In the potting of a seed there is little chance of mechanical movement of spore. However those who do the magic fast germination tricks are in direct contact with the growing living part, of the live seed parts germinating. Transfer, of spore, from hand, to seed and consequently into the pot is a possible factor but seldom seen and rarely reported cause they have'nt the foggiest what is going on. That instance often is called bad seed.

Our hobby juggles seed from all over the world. The hands that touch them are those of just plain dirt farmers. None that I know of have certified fungi clean seed.

It can get sneaky....For instance let's asume my patch is festering with clubroot. I walk through it, go to the house and take of my sneakers. I then send you a bubble pack with seed and the portion, of the bubble pack, you most likely touch just swarming, with clubroot spore. The spore can lay dorment,fifteen years, or longer and then raise their ugly activities. And about all you can think or say is: "Where the heck did that come from"?

6/12/2005 1:41:02 PM

Utah

Brian,
I think the cause is that the tip of the radical is some how damaged. possible causes ... genetic and/or enviroment ... when the seed is formed the radical doesn't form correctly or when it is germinates something happenes to it.


Martin here is a pic ...
http://www.bigpumpkins.com/Diary/DiaryViewOne.asp?eid=32146

6/13/2005 9:27:52 AM

Hilpoltstein, Bavaria, Germany

Thanks, Gordon!

6/13/2005 4:47:21 PM