We are pleased to announce the release of the 
CSM-CROPGRO-Perennial-Forage model in DSSAT Version 4.7, complete with 
species adaptations and data files for three perennial forages:  
Brachiaria brizantha Stapf cv. Marandu, ‘Tifton 85’ bermudagrass 
(Cynodon spp.), and alfalfa (Medicago sativa L.) cv. Aragón.

The CROPGRO Perennial Forage Model (CROPGRO-PFM) was developed from the 
annual crop version of CROPGRO by Rymph (2004) in order to allow 
simulations with periodic partial to complete defoliation and subsequent 
regrowth using newly added state variables for storage of carbohydrate 
and nitrogen reserves in a new storage tissue type (stolon, rhizome, 
crown, taproot), along with rules for use and re-fill of those reserves 
for re-growth even after complete defoliation or surface winter-kill. In 
2017, the CROPGRO-PFM was brought into the Cropping System Model code 
and the DSSAT Version 4.7 release, with species parameterization and 
data files for Brachiaria brizantha Stapf cv. Marandu and ‘Tifton 85’ 
bermudagrass (Cynodon spp.) from Pequeno et al. (2017), and alfalfa 
(Medicago sativa L.) cv. Aragón dormancy group 7 (Malik et al., 2018).

For further information and complete references, see the main page for 
CSM-CROPGRO-Perennial-Forage: https://urldefense.proofpoint.com/v2/url?u=https-3A__dssat.net_cropgro-2Dperennial-2Dforage&d=DwIDaQ&c=pZJPUDQ3SB9JplYbifm4nt2lEVG5pWx2KikqINpWlZM&r=g4TWv2PYGfXnyiJ67nLkVzT5B6KZupnWUoneaPNuleo&m=IosnJuJ87SbiSAZL71y8YhRhFoPEMlXXBJbs1x-35VI&s=6twaxBt2pp8FoXnBjwZkpHLb-dAR5OISm-WD3WptQPY&e=.

If you are interested in adding another perennial forage crop to DSSAT, 
please contact Professor Ken Boote.


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Gerrit Hoogenboom
Preeminent Scholar, Institute for Sustainable Food Systems
Professor, Agricultural and Biological Engineering

184 Frazier Rogers Hall
PO Box 110570
University of Florida
Gainesville, Florida 32611-0570, USA
+1 352-294-1036; Fax: +1 352-392-4092
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www.GerritHoogenboom.com
http://isfs.institute.ifas.ufl.edu