Hi Hiroshi,

It will also be helpful if you can collect
1) dates to different vegetative and reproductive stages
2) LAI and SLA values

Please have a look at soybean genetic coefficients described in Vol. 2 on
pages 218-219. This would give you more insight into what data you need to
collect.

Regards
Gopal

Vijaya Gopal Kakani,
Plant Environment Laboratory,Cutbush Lane, Shinfield, Reading RG2 9AD, UK
125, Sibly Hall, Redhatch Drive, Earley, Reading RG6 5QW
Tel : +44-(0)118-9883000
Mob : +44-(0)774-7636732
E-mail: [log in to unmask]
URL : http://www.reading.ac.uk/~aar97vgk

----- Original Message -----
From: "Hiroshi HASEGAWA" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, November 15, 2000 3:43 AM
Subject: Field observations for soybean cultivar coefficients


> Dear DSSAT users:
>
> I plan to determine coefficients of Japanese soybean cultivars. According
to
> the DSSAT manual Vol. 3 (version 3.0, page 206), required field
observations
> are flowering and maturity dates, grain yield, biomass at maturity, grain
> number m-2, grain number per pod, and grain wt.
>
> Is that all, or is there any other type of field observation required or
> desirable to determine soybean cultivar coefficients?
>
> Best wishes,
>
> Hiroshi Hasegawa
>
> Division of Upland Farming
> Tohoku National Agricultural Experiment Station
>   960-2156
>   Fukushima-shi, Arai, Aza harajuku-minami 50
>   JAPAN
>   Phone; 81-24-593-6177
>   FAX  ; 81-24-593-2155
>   Email; [log in to unmask]
>