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....Potato tubers are just thick bits of root.Potatoes grow up from the seed sending just a few fine roots downwards. As the shoots head for the surface they send out side roots, it's on these that the tubers form...Phil
Quote from: philcooper on December 07, 2005, 11:12:07....Potato tubers are just thick bits of root.Potatoes grow up from the seed sending just a few fine roots downwards. As the shoots head for the surface they send out side roots, it's on these that the tubers form...PhilI think potatoes are stem tubers, not root tubers, and also have found that it is important, if growing in this way, to let the stem grow to about 12", then earth up only to the leaves, then when it's grown another 12", earth up again and so on. The other thing that affects the quantity of tubers produced is potassium - research shows that a equal rate of both potassium and nitrogen gives the best results for large yields.