Re: Contractile Roots

Could this be what happens?  

The bulb puts out contractile roots as stablizers, the plant grows, the bulb
wastes away, the weight of the plant causes it to settle into the wasted
bulb's hole, the plant dies then rebuilds it's new bulb at a deeper level
where the next contractile root growth anchors it, and the process begins all
over again. So do the roots actually PULL it down, or does it simply settle
and restablize?   In the case of konjak and titanum, there is a lot of weight
to be born by the bulb.  I'm trying to visualize how roots can pull.

Bill Lanchaster at Humboldt State University has a konjak growing in his
compost pile.  He mentioned that he tried to dig it up once, but gave up.  He
says it PULLS itself further down each year.  It must be 4' to 5' below the
BOTTOM of the compost pile where it began.  That's 10 to 15 years of droppage

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