Modeling growth, development and yield of cassava: A review
| Autor: | Julian Ramirez-Villegas, Luis Augusto Becerra Lopez-Lavalle, Christine Kreye, James H. Cock, Senthold Asseng, Meklit Tariku, Pieter Pypers, K.S. Ezui, Patricia Moreno-Cadena, Gerrit Hoogenboom |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Process (engineering) Yield (finance) Soil Science Biomass Regression analysis Food security 04 agricultural and veterinary sciences Agricultural engineering Storage roots Decision support systems 01 natural sciences Article ddc Growth development Dynamic models Crop simulation models 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Dry matter content Crop simulation model Agronomy and Crop Science 010606 plant biology & botany Mathematics |
| Zdroj: | Field Crops Research |
| ISSN: | 0378-4290 |
| DOI: | 10.1016/j.fcr.2021.108140 |
| Popis: | 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. Cassava is an important crop in the developing world. The goal of this study was to review published cassava models (18) for their capability to simulate storage root biomass and to categorize them into static and dynamic models. The majority (14) are dynamic and capture within season growth dynamics. Most (13) of the dynamic models consider environmental factors such as temperature, solar radiation, soil water and nutrient restrictions. More than half (10) have been calibrated for a distinct genotype. Only one of the four static models includes environmental variables. While the static regression models are useful to estimate final yield, their application is limited to the locations or varieties used for their development unless recalibrated for distinct conditions. Dynamic models simulate growth process and provide estimates of yield over time with, in most cases, no fixed maturity date. The dynamic models that simulate the detailed development of nodal units tend to be less accurate in determining final yield compared to the simpler dynamic and statistic models. However, they can be more safely applied to novel environmental conditions that can be explored in silico. Deficiencies in the current models are highlighted including suggestions on how they can be improved. None of the current dynamic cassava models adequately simulates the starch content of fresh cassava roots with almost all models based on dry biomass simulations. Further studies are necessary to develop a new module for existing cassava models to simulate cassava quality. |
| Databáze: | OpenAIRE |
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