[IBC] Glucose and stuff
Theo asked me to repeat this onlist, so:
In most plants, sugars are produced by photosynthesis in green portions of the plant, and transported to the roots. Therefore, the best way to feed sugar to the roots is to provide the plant with plenty of sunlight. But I should explain that sugars are moved in plants according to a "source-sink" system: sugar acts as an osmoticum, and travels from areas of high sugar to areas of low sugar. Roots cleverly convert sugar to starch, so they can continuously grab sugar and store it. Think of a carrot or potato- both are starchy storage roots. Glucose is sometimes used to feed plants in special situations: for instance, in genetics labs, people sometimes have to keep albino corn seedlings alive, and sometimes roots are kept alive in tissue culture for long periods of time. In both instances, however, the plant tissue is kept under axenic conditions, because any microbes in the medium would eat the sugar before the roots ever saw it. Some parasitic plants lack chlorophyll (Indian pipe, dwarf mistletoe, and dodder, for instance), and have to steal sugar from a photosynthetic host. They do this directly, by tapping into the phloem of the host (dodder, mistletoe), or by living in symbiosis with a fungus that is attached to a photosynthetic host. In summary, I can't think of any reason to add sugar to a bonsai. In the soil, it would be rapidly eaten by microbes, and if sprayed on leaves, it would be eaten by phyllosphere organisms (the fungi on leaves aren't called "sugar fungi" for nothing). ************************************************** ****************************** ++++Sponsored, in part, by Mike Page ++++ ************************************************** ****************************** -- The IBC HOME PAGE & FAQ: http://www.internetbonsaiclub.org/ -- +++++ Questions? Help? e-mail +++++ |
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