So i tried posting this from my phone, which was a really dumb idea considering i've never posted on this forum before, so sorry if this is a repost! Basically, I was given a job to take care of a massive green house and outdoor raised-bed garden. (i'm an herb gardner, and have never worked with vegetables, EVER.) I'm pretty sure i've just managed to kill an entire crop of potatoes. I don't know how, or why, or which god I angered, but i'm pretty sure it'll cost me my job.

I've tried everything, but the bottom line is, i don't know anything about vegetable diseases. Basically, my potatoes were doing great. Big, green, upright foliage, flowers, little tiny fruit on the upper part of the plant and big honkin' taters on the bottom. Then one day, after a couple weeks of steady afternoon rains (unusual for this region,) I came out to a couple yellowed leaves on the bottom of the plants. I pulled the leaves, checked for parasites on the stalk and leaf, found nothing, and thought "Must've just been all that rain." I started a round of anti-fungals, and didn't think anything of it. Well, two weeks later, the plants are completely yellow and falling over. I've completely pulled half the crop at this point to try and keep whatever it is from spreading, but i think it's too late.

I've done some frantic googling (on more than one occasion. Despite this being my first post, you guys have already helped me save a whole boatload of tomato plants,) and it kind of looks like RKN, but there aren't any actual knots on the ROOTS, just the ugly stuff on the potatoes themselves.

Please give me your opinions about it. I've attached photos for you guys to check out. Are the potatoes even edible? They're ugly as sin, and i don't know if i can salvage any of the rest of the plants.

Here are the links to the photos:

http://i44.tinypic.com/iyo6iw.jpg

http://i43.tinypic.com/2zi3fpt.jpg

http://i39.tinypic.com/6pcbar.jpg