Gerrit Hoogenboom wrote:
>
> Theodorus :
>
> Bushels is a volume measure and varies from crop to crop.
>
> The models write out bushels for documentation purposes only.  We use
> biomass for model evaluation, including crop biomass and yield.  Please note
> that the models also do NOT account for seed moisture and assume that seeds
> are ovendry.  Yield trials and USDA reports normally include seed moisture
> at 14 or 15 %.
>
> I was unable to locate the conversion from bushels to lbs or kg for our
> variety trial reports.
>
> Gerrit
>
> At , DSSAT - Crop Models and Applications wrote:
> >At 12:45 PM 2/11/98 -0700, Theodoros Mavromatis wrote:
> >>Dear DSSAT users,
> >>
> >>working on the evaluation of CERES-Sorghum using experimental data from
> >>southeastern USA I face the problem of conversion of bushels of sorghum
> >>to lb. It seems that CERES-Sorghum assumes that 1bu = 60 lb while from
> >>the experimental data 1 bu ranges from 45 to 55 lb with a mean round 52.
> >>>From reports regarding agriculture at Kansas I found 56 to be the
> >>conversion number.
> >>
> >>I would really appreciate If someone out there can tell me how this
> >>number varies and how this affect the model validation taking into
> >>account that my experiemntal yields are expressed in bu.
> >>
> >>Thank you in advance
Dear DSSAT users,
 
I am working on the validation of CERES-Maize at Louisiana and I am
wondering if anyone could recommend me how many days on average after
the physiological maturity harvest takes place for the medium and early
corn varieties ?
 
Thanks in advance,
 
Theodoros
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Theodoros Mavromatis                           tel: +303-497-8127
National Center for Atmospheric Research       fax: +303-497-8125
ESIG, P.O. Box 3000
Boulder, Colorado, 80307
USA