Calculates the chilling and heat accumulation for studies of the temperate fruit trees.
The models in this package are:
- Utah (Richardson et al., 1974)
- Positive Chill Units - PCU (Linsley-Noaks et al., 1995)
- GDH-A (Growing Degree Hours by Anderson et al., 1986)
- GDH-R (Growing Degree Hours by Richardson, 1975)
- North Carolina (Shaltout e Unrath, 1983)
- Landsberg Model (Landsberg, 1974)
- Q10 Model (Bidabe, 1967)
- Jones Model (Jones et al., 2013 <DOI:10.1111/j.1438-8677.2012.00590.x>)
- Low-Chill Model (Gilreath and Buchanan, 1981)
- Model for Cherry "Sweetheart" (Guak and Nielsen, 2013 <DOI:10.1007/s13580-013-0140-9>)
- Model for apple "Gala" (Guak and Nielsen, 2013 DOI:<10.1007/s13580-013-0140-9>)
- Taiwan Model (Lu et al., 2012 <DOI:10.17660/ActaHortic.2012.962.35>)
- Dynamic Model (Fishman et al., 1987) adapted from the function Dynamic_Model() of the 'chillR' package (Luedeling, 2018)
- Unified Model (Chuine et al., 2016 <DOI:10.1111/gcb.13383>)
- Heat Restriction model.

To install this package run:
install.packages("ChillModels")
library(ChillModels)

The release version of `ChillModels` package is hosted in GitHub. You can download it from GitHub using devtools package.

install.packages("devtools")
devtools::install_github("RPertille/ChillModels")
library(ChillModels)