low_chill_model: Low-chill model

In EduardoFernandezC/dormancyR: Functions to Compute Chill Metrics

Low-chill model

Description

Function to compute winter chill for deciduous trees according to the Low-chill model proposed by Gilreath and Buchanan (1981). This function is compatible with some chillR functions (i.e tempResponse) to estimate metrics from hourly temperature records.

Usage

low_chill_model(HourTemp, summ = TRUE)

Arguments

HourTemp	Vector of hourly temperatures
summ	Boolean parameter indicating whether the computed metric should be provided as cumulative values over the period or as the actual accumulation for each hour

References

Gilreath P. and Buchanan D. 1981. Rest prediction model for low-chilling sungold nectarine. J. Am. Soc. Hort. Sci. 106(4): 426 - 429

Examples

library(chillR) 

#Example 1

data <- stack_hourly_temps(KA_weather, latitude = 50.62)
low_chill_model(data$hourtemps$Temp, summ = TRUE)

#Example 2

tempResponse(data, Start_JDay = 345, End_JDay = 58,
models = list(Low_Chill = low_chill_model))

EduardoFernandezC/dormancyR documentation built on Aug. 24, 2022, 7:21 a.m.