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Sender:	DSSAT - Crop Models and Applications <[log in to unmask]>
Subject:	variable XSTAGE
From:	Aris Gerakis <[log in to unmask]>
Date:	Mon, 14 Jun 1999 12:36:50 -0400
Content-Type:	text/plain; charset="us-ascii"
Reply-To:	DSSAT - Crop Models and Applications <[log in to unmask]>
Parts/Attachments:	text/plain (21 lines)

Dear List,

A programmer's question:  What exactly is variable XSTAGE in subroutine
PHENOL?  According to the Jones & Kiniry book, XSTAGE is "non-integer
growth stage indicator ranging from zero to six."  For example, during
ISTAGE 3, XSTAGE takes values 3.1, 3.2, 3.5, etc.  But this relationship
breaks down in the millet model.  During ISTAGE 4, XSTAGE takes values
higher than 5, up to 8.1:

   XSTAGE = 5.0 + SUMDTT/PFLOWR

Thanks for any reply,

Aris Gerakis
Dept. of Crop and Soil Sciences                 Voice: (517) 353 8537
Plant  and  Soil Sciences Bldg.                 F a x: (517) 353 8538
Michigan    State    University
East Lansing,   MI 48824 - 1325
E-mail:   [log in to unmask]
http://nowlin.css.msu.edu/aris/

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