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Old September 17, 2018   #16
svalli's Avatar
Join Date: Feb 2006
Location: Vaasa, Finland, latitude N 63°
Posts: 778

I dug up one more variety yesterday. The leaves had a bit green on them, but the potatoes were already so large, that they do not need to grow anymore. Week ago I dug up couple varieties from he field, where we have no mulch and the potatoes were much smaller than the ones grown with plastic mulch.
The plastic mulch definitely helps retaining moisture and made a big difference in a dry summer like we had. I do not look forward to wet summers, but it will be a good test to see how this method works in our typical rainy summer.

Picture below shows what I got from 29 seed potatoes of Mozart. When all were picked up we got two full 45 liter vegetable crates. Biggest spud weighed almost 700 g (1½ lb) and there are quite many which are over a pound. This variety is excellent yellow flesh baking potato. Mozart on the field was planted couple of weeks later than these and are still growing, so it will interesting to compare the size of those to these. Now we are getting the typical autumn rains and hopefully the potatoes will keep growing until the first frost.

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File Type: jpg Mozart under plastic.jpg (528.9 KB, 57 views)
File Type: jpg Giant potato.jpg (90.3 KB, 58 views)
"I only want to live in peace, plant potatoes and dream."
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Old September 17, 2018   #17
bower's Avatar
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,076

That spud is huge! Your father-in-law should be impressed with that one, enough to feed a family!
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Old 3 Days Ago   #18
Join Date: Jun 2016
Location: wales uk
Posts: 65

Works very well with strawberry plants also, so much so that commercial operations use it on a very large scale
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Old 3 Days Ago   #19
GoDawgs's Avatar
Join Date: Feb 2018
Location: Georgia, 8a/7b
Posts: 573

Wonderful, Svalli! How hot does it get in the summer where you are? I might have to try just three or four potatoes under plastic next year and plant next to the traditionally planted and hilled ones.
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Old 2 Days Ago   #20
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Join Date: Nov 2011
Location: ohio
Posts: 4,079

OH MY! that is awesome. I don't know how I missed this last year, but I did. this is fantastic to see. I don't grow potatoes as they are are too much work and yield too little for the space I am giving up but this makes it looks too easy. and I do have a spot I can try this method on and fingerlings left over from last year to do it with. I bought them at a farmers market and "lost" them and when I finally found them (hanging behind the door in the pantry... it was too late to eat them as they had sprouts all over them....
carolyn k
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