Hugh Once again thanks a lot for the help. I am sure he should be able to help me in this matter.
Regards Jose ----- > >Dear List members. > > > >I wonder if anyone of you would have some handy > >reference showing that plants do exudate protein > >as stated in Dr Ingham CD material and many lectures > >that I have seen. > >I have been questioned by a researcher down here and > >standing at Dr Ingham�s side have put my reputation at > >stake since this questioning was done in the middle of > >a lecture I was doing for a group of organic growers. > > > >I thank in advance any help I can get > > > >Regards > > > > > >Jose Luiz > > Dear Jose, > > At a workshop I attended in Australia by Ward Penwarn > ([EMAIL PROTECTED]) he presented a fairly comprehensive list from what > appeared to be a highly authoritative source of what root exudates were > known to be made up of. Maybe you could contact him. I'm sure he knows > Elaine. > > Proteins definitely figured importantly in the list, which included > virtually everything from simple sugars and polysaccarides to complex > allelopathic chemicals. Dr. Ingham likes to refer to this as "carbon > shedding" at the roots since the mix is so complex. I often refer to giving > off sugars at the roots, since the sugars figure importantly in feeding the > soil food web, but that is for simplicity of speech. The picture is really > far more complex. And for each species of plant it is different--unique. So > each plant feeds a different complex of soil food web organisms, due to the > differences in the mix of root exudates. This is one of the important > reasons we need far more diversity in our cropping schemes and in our crop > rotations. I find, for instance, that market gardening in 40 inch wide beds > with grassy/clover paths surrounding the beds ups my diversity of plants > many fold and does wonderous things for the land. But you can figure that a > plant's root exudates are a form of excreta and normally any species avoids > its own excreta after a while. > > Best, > Hugh > Visit our website at: www.unionag.org >
