ORYZA_Model_RTOOLS: Tools for Rice Crop Simulation with ORYZA V3.0

Rodriguez-Espinoza J.

International Center for Tropical Agriculture

Contact: Email - LinkedIn

Repository: GitHub

Description

Project with many tools to use ORYZA crop model. It Includes functions to create input files (weather *.WTH, soil *.SOL, experimental *.EXP), estimate parameters (crop, weather and soil), import and visualize outputs. It will conect with ORYZA_AUTO_PARAM tool to compute diferent parameters required in the crop model parametrization and calibration.

For more information about the ORYZA Crop Model:

• Official ORYZA Model website

• Book about ORYZA2000: modeling lowland rice.

• Research paper about ORYZA V3.0

Make_WTH_ORYZA.R

Function to create ORYZA-model weather files.

Usage

require(tidyverse)
require(lubridate)
Make_WTH_ORYZA(data, path, local, lat, lon, alt, stn=1)

Arguments

• data: csv file name or data.frame of daily values. View Weather Template

Var_Name	Description	Class	Unit
DATE	Date in "mm/dd/yyyy"	Date	MM/DD/YYYY
TMAX	Maximum temperature	num	(oC)
TMIN	Minimun temperature	num	(oC)
RAIN	Rain or Precipitation	num	(mm)
SRAD	Solar Radiation	num	(MJ)
RHUM	Relative humidity (opcional)	num	(%)

• path: path folder or working directory
• local: 4 letters string of locality name. "AIHU"--> Aipe, Huila
• lat: latitud (decimal degrees)
• lon: longitud (decimal degrees)
• alt: altitude (meters above sea level)
• stn: Station number. default=1

Make_SOIL_ORYZA.R

Function to create ORYZA-model soil files. Default PADDY model

Usage

require(tidyverse)
Make_SOIL_ORYZA(data, path, ZRTMS = 0.50, WL0I = 0, WCLI='FC' , RIWCLI = 'NO', SATAV=20)

Arguments

• data: csv file name or data.frame. View Soil Template

Var_Name	Description	Class	Unit
ID	Trial ID	character	XXXX
SAMPLING_DATE	Sampling date	date	MM/DD/YYYY
DEPTH	Soil depth (Thickness)	numeric	cm
PH	pH in water	numeric	units
SCARBON	Total soil carbon	numeric	g/kg
SCEC	Cation exchange capacity	numeric	cmol/kg
SNH4	Ammonium, KCl, g elemental N	numeric	mg/kg
SNO3	Nitrate, KCl, g elemental N	numeric	mg/kg
SLNI	Total nitrogen	numeric	mg/kg
SLON	Organic nitrogen	numeric	mg/kg
SBDM	Bulk density, moist	numeric	g/cm³
SRD	Real density	numeric	g/cm³
SPOR	Total soil porosity	numeric	%
WCF	Water content at field	numeric	%
SSKS	Saturated hydraulic conductivity	numeric	cm/day
WCST	Saturated volumetric water content	numeric	%
WCFC	Volumetric water content at field capacity	numeric	%
WC1B	Volumetric water content at 1 bar	numeric	%
WCWP	Volumetric water content at wilting point	numeric	%
SAND	Soil sand content	numeric	%
SILT	Soil silt content	numeric	%
CLAY	Soil clay content	numeric	%
STC	Soil texture class (USDA)	character	name

• path: path folder or working directory
• ZRTMS: Maximum rooting depth in the soil (m),
• WL0I: Initial ponded water depth at start of simulation (mm)"
• WCLI: can take 3 values: Field Capacity ('FC'), 50% of Soil Saturation ('ST50'), Fraction of water content ('0.0'- '1.0')
• RIWCLI: Re-initialize switch RIWCLI is YES or NO
• SATAV: Soil annual average temperature of the first layers