bad soil (tomatoes, vegetable, concrete, yard)

[hulonfam]

I have a question about one spot in my vegetable garden. No matter what I plant in this spot the vegetable comes down with some kind of virus. Tomatoes get early blight, squash get mosaic virus, okra will not grow, and this year my field peas got a leaf virus. The local extension offices said " there must be something in the soil" duh! So I'm wondering if anyone knows how to detox the soil. The extension office did not offer any helpful suggestions .

[Hemlock140]

The best solution is to dig it up, and take to some area of the yard where you have nothing planted (or to the landfill). Then replace with good soil. This is also the easiest method.

You can sterilize it by "cooking" in the over at 180F for 30 minutes, but it will take a long time to do a few pans at a time. Alternatively, you can spread it out on plastic over a concrete patio or driveway, about an inch deep, then cover with clear plastic and leave in the summer sun for 4 weeks.

[Cambium]

Did you do a soil test? Might be worth it. Or do the simple thing. Dig down 6", put dirt aside (maybe don't use it anywhere) and add new soil. (with compost!). See if that helps. Bring a soil sample to your nursery.

[hulonfam]

That's a lot. I was thinking of trying Kodiak mustard seeds. I guess the easiest way is to remove it it it is a 4 ft by 25 ft area . That's 's for the help.