| price_reduction {landsepi} | R Documentation |
Price reduction function
Description
Give the price reduction rate associated with the infection on the (grapevine) fruits
Usage
price_reduction(
I_host,
N_host,
Nhost,
Nyears,
nTSpY,
severity_thresh = 0.075,
price_penalty = 0.3
)
Arguments
I_host |
number of infected individuals for each cultivar and timestep |
N_host |
total number of individuals for each cultivar and timestep |
Nhost |
total number of cultivars considered in the simulation |
Nyears |
number of simulated cropping seasons |
nTSpY |
number of timesteps (e.g. days) per cropping season |
severity_thresh |
disease severity threshold above which the price reduction is applied |
price_penalty |
percentage of price reduction |
Value
A matrix with the price reduction rate per cultivar and per year of simulation
References
Savary, S., Delbac, L., Rochas, A., Taisant, G., & Willocquet, L. (2009). Analysis of nonlinear relationships in dual epidemics, and its application to the management of grapevine downy and powdery mildews. Phytopathology, 99(8), 930-942.