Growth

Organ(f = [0.53, 0.25, 0.05, 0.05, 0.06, 0.06],
      te = 100.0, tm = 50.0, tb = 10.0, wmax = 0.1)

Data structure to store all parameters for the growth model of a plant organ.

Arguments

• f: fraction of dry matter allocated to different carbon pools of newly formed material, [carbohydrates, proteins, lipids, lignin, organic acids, minerals]
• te: time at which growth rate extinguishes, [DD]
• tm: time at which growth rate is maximum, [DD]
• tb: base temperature, [°C]
• wmax: maximum weight, [g]

compute_ASRQ(f::Vector{Float64})

Compute assimilate requirement, CO2 production factor and carbon content according to Penning de Vries et al. 1982. These values can be used to compute growth respiration. Different tissues (species/organ) have different composition. Growth costs are computed given the fraction of dry matter allocated to different carbon pools according to specific composition of the tissue: f = [carbohydrates, proteins, lipids, lignin, organic acids, minerals]

The assimilate requirement (ASRQ, g) is the amount of assimilates required to produce 1 g of dry matter.
The CO2 production factor (CO2PFF, g) is the amount of CO2 produced per g of dry matter.
The carbon fraction (CF, %) is the fraction of dry matter that is carbon.

Citations: Penning de Vries, F. W. T., & van Laar, H. H. (1982). Simulation of growth processes and the model BACROS. In F. W. T. Penning de Vries, & H. H. van Laar (Eds.), Simulation of plant growth and crop production (pp. 114-135). (Simulation monographs). Pudoc. https://edepot.wur.nl/172216

compute_potential_GR(par::OrganType)

Compute potential growth rate of the leaf according to thermal time (Yin et al 2003) The potential growth rate is computed as a function of thermal time (tt, DD), and the parameters of the growth model: - time at which growth rate extinguishes (te, DD), - time at which growth rate is maximum (tm, DD) - base thermal time at which growth starts (tb, DD) - maximum weight (wmax, g)

Citations: Yin, Xinyou & Goudriaan, Jan & Lantinga, Egbert & Vos, Jan & Spiertz, Huub. (2003). A Flexible Sigmoid Function of Determinate Growth. Annals of botany. 91. 361-71. 10.1093/aob/mcg029.