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Here's a guess:
	The above average rain earlier in the season was responsible for
the very vigorous growth (11 ft stems).  But with the heat and lack of
rain, the plants may be unable to supply enough moisture to all tissues to
maintain the torgor (pressure) of the cells in the stems.  Changes in cell
torgor is what is responsible for wilting, unrolling of leaves, etc., as
well as keeping stems erect. The cells are thus somewhat "flacid",
allowing the stems to droop or lay over.  If you want to test this idea, 
try watering a portion if a hose will reach it, and see if the plants
respond.

> >>> "Ed and Gale" <galed@midwest.net> 09/23/98 05:26pm >>>
> This year the vast majority of our Indian Grass and Big Bluestem is
> laying over. We had hot weather and no rain at all for 5 1/2 weeks
> preceded by 4 months of above average rainfall. We haven't had high
> winds or storms of any significance. Could the weather be a
> contributing factor to this phenomenon? Some of our Big Bluestem is
> over 11' high but it never fell over like it is this year. 
> Ed and Gale
> 
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