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Old July 15, 2017   #2
NathanP
Tomatovillian™
 
Join Date: May 2013
Location: RI
Posts: 183
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It is a product of the environmental factors. Factors such as nutrient availability, soil porosity and type, and rainfall can influence pigmentation. Mostly likely, the sandy soils is the main factor in your case.

See the image below. These are Papa Chonca tubers grown in 3 types of soil. On the left are tubers grown in the normal sandy loam that I have at my home, in the center are tubers grown in very sandy soil, and on the right are tubers grown in soil that has a good amount of clay content. You can see the differences. All of these are clones from the same plant, so they are genetically clones, just varying because of the environmental factors.

Quote:
The skin is rather rough- almost flaky or slight cracking. Would this be caused from letting the soil dry out too much?
Regarding skin, many blues really should be harvested slightly before ful senescence. Waiting longer than that tends to cause skin problems




Last edited by NathanP; July 15, 2017 at 12:26 AM.
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