Give the price reduction rate associated with the infection on the (grapevine) fruits
price_reduction(
I_host,
N_host,
Nhost,
Nyears,
nTSpY,
severity_thresh = 0.075,
price_penalty = 0.3
)A matrix with the price reduction rate per cultivar and per year of simulation
number of infected individuals for each cultivar and timestep
total number of individuals for each cultivar and timestep
total number of cultivars considered in the simulation
number of simulated cropping seasons
number of timesteps (e.g. days) per cropping season
disease severity threshold above which the price reduction is applied
percentage of price reduction
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.