Try reposting the photos....I see that my photos above have disappeared...
Plants are smart, but not real smart. They "know" they are being attacked. They have "learned" that loss of leaf is usually due to insect herbivore predation. Their chosen defense to loss of leaf is to increase nicotine production. Since nicotine is produced exclusively in the roots, the root growth is stimulated, which in turn increases the thickness of the stalk.So that must regard upward growth and let the roots continue?
Here's my oft repeated image of clipped seedlings.
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Note that the growing tips are not clipped.
Bob
Sorry to mislead. The photo of the clipped plants is from several years ago. My current season's seedlings are wee little things.
Bob
Ah. The photo was taken on May 11. (I seem to recall a prediction of a late frost that May.) From the time that they are started, until they go into the ground, they grow on wire shelves in my enclosed back porch, which differs by only a few degrees from indoor temp. As you can see from the photo, the 1020 trays are supported right at window height. They get about 1/2 day of sun, through a layer of glass and a thin sheet of plastic stretched over the windows for insulation....where are these plants situated - is this during the warm season, is there heat where they are, good sun, etc. And they are rather large, yet appear to still be in flats...???
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