What kind/name of fert was used?

What sort of contamination are you concerned about?

A pelleted fertilizer is most likely not an acceptable organic product, Jean.

I would dig up the seed potatoes and replant them.
It is highly unlikely if you can still see those pellets on the soil that they have contaminated any of the potatoes.

kimmq is kimmsr

"A pelleted fertilizer is most likely not an acceptable organic product,"

Nonsense!! Many organic ferts come in a granular or pelletized form, especially those that are packaged/bagged for general purpose use rather than a single ingredient fertilizer. EB Stone, Dr Earth, California Organics, Down to Earth and Nutri-Rich all offer pelletized organic ferts and all are OMRI rated.

I too would wonder at the type of contamination the OP was concerned about.

I had the same thing happen to me at my community garden... The neighbor was a nice elderly man and I did not have the heart to tell him not to mess with my garden. I just dealt with the less then ideal growing plants and glad I did since not long after he passed away suddenly... We are not allowed to use non-organic fertilizers so I was confident they were at least organic products he used.

Like gardengal said, you don't know what fertilizer was used. It may very well be organic. Find that out first. To suggest to rip out your plants without knowing is ridiculous advise.

In reality, lots of things come in a granular formulation, including insecticides, herbicides, molluscicides, gypsum, etc.

Mebe, you have every right to ask what your neighbor applied. He may have used a rotary spreader and inadvertently broadcast too far.

But in the event that it was simply a slow release fertilizer, what about that makes you so anxious that you would remove your crop from the area? I'm simply curious. :-)

Me, too.

We need more facts in order to make reasonable suggestions.

I rarely see the neighbors, so I haven't had a chance to ask him. I've seen him fertilize previous years with Non-organic fertilizer in the past though.

I would be concerned about a non-organic slow release fertilizer because I planted seed potatoes in that spot. The fertilizer was in the trench where I'd planted the seeds. Plus, potatoes really absorb pesticides and chemicals through the soil. Thus, the reason they are one of the "dirty dozen."

One positive is that I was able to remove the fertilizer that I could see before it rained!

If my neighbor was broadcasting an unknown material on my garden, I'd not hesitate to knock on his door and ask what it was. Have you thought about doing that?

Confirmation is much more productive than speculation.