Modeling growth, development and yield of cassava: A review

Abstract

Highlights The majority (14) of the reviewed cassava models are dynamic. Detailed dynamic models tend to be less accurate in determining final yield. Only one of the four static models includes environmental variables. Cassava models do not represent the dynamics of starch content in fresh weight.

Evaluation of DSSAT‐MANIHOT‐Cassava model to determine potential irrigation benefits for cassava in Jamaica

“…The RMSE n ranged from 4.35 to 14.92% at Wallen and from 7.44 to 15.08% at Bernard Lodge for all varieties. Similar values were reported in calibration for genotypes in Thailand by Phoncharoen, Banterng, Moreno-Cadena, et al (2021). In general, the model simulated earlier forking at Bernard Lodge for all varieties except the CM 6119-5.…”

“…Harvest index measures the proportion of total biomass accounted by the economic portion of the crop, in this case, the storage roots. It usually reflects the correlation that commonly occurs between total biomass and yield (Ramanujam, 1990; Alvez, 2002; Moreno‐Cadena et al., 2020, 2021; Phoncharoen, Banterng, Moreno‐Cadena, et al., 2021). The model predicted the end‐of‐season HI at both sites, with deviation percentages ranging from −27.8 to +28.1%.…”

“…The model uses 10 ecotype parameters and 21 cultivar-specific parameters. A comprehensive review of these cassava models is given in Moreno-Cadena et al (2021). The CSM-MANIHOT-Cassava model (referred to as MANIHOT-Cassava in the remainder of the paper) was developed as an improved version of the CSM-CROPSIM.…”

“…Eighteen crop models have been developed for cassava (Moreno‐Cadena et al., 2021). Listed among these are the following models: the Simple and Universal CRop growth Simulation Model (SUCROS) (Penning de Vries & Laar, 1982; Gijzen et al., 1990), the Light Interception and Utilization Model (LINTUL) (Adiele et al., 2021; Ezui et al., 2018), GUMCAS (Matthews & Hunt, 1994), Cropping System Model (CSM)‐CROPSIM (Hoogenboom, Porter, Boote, et al., 2019; Hoogenboom, Porter, Shelia, et al., 2019), and CSM‐MANIHOT (Hoogenboom, Porter, Boote, et al., 2019; Hoogenboom, Porter, Shelia, et al., 2019; Moreno‐Cadena, 2018; Moreno‐Cadena et al., 2020).…”

“…The SUCROS model simulates plant growth based on total photosynthesis and accounts for respiration losses. The allocation of assimilates to different plant organs varies with development stage and tuber growth (Moreno‐Cadena et al., 2021). However, the model was calibrated using data from one location (Colombia), which limits its application to other regions (Moreno‐Cadena et al., 2021; Veltkamp, 1986).…”