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Simulation of Crop Growth: CROPGRO Model
Published in Robert M. Peart, R. Bruce Curry, Agricultural Systems Modeling and Simulation, 2018
Kenneth J. Boote, James W. Jones, Gerrit Hoogenboom
Growth and maintenance respiration are handled similarly to SOYGRO V5.42 (Jones et al., 1989; Wilkerson et al., 1983) and PNUTGRO V1.01 (Boote et al., 1986). Maintenance respiration depends on temperature, gross photosynthesis rate, and current crop biomass (minus oil and protein stored in the seed). The relative sensitivity of maintenance respiration is similar to the Q10 response (1.85) reported by McCree (1974).
Co-simulating a greenhouse in a building to quantify co-benefits of different coupled configurations
Published in Journal of Building Performance Simulation, 2021
Melanie Jans-Singh, Rebecca Ward, Ruchi Choudhary
The change in CO concentration is attributed to the difference between carbon assimilation through photosynthesis and maintenance respiration of the plants (Equation (6)). The rate of change of CO is calculated as a function of mass flow rate of carbohydrates MC in the plant system (kg/m/s), between the buffer , leaf and stem and the internal air (all in kg/m). The crop growth model is based on Farquhar, von Caemmerer, and Berry (1980); Von Caemmerer (2013); Bonan (2015), where the carbon assimilation rate varies with three limiting states: atmospheric CO and the enzyme Rubisco which catalyses CO fixation (Equation (B23)), light and electron transport (Equation (B24)), and starch accumulation (Equation (B26)). Detailed model equations are described in the appendix. where and are the molar mass of CO and carbohydrates, respectively.
Radiological Impact Assessment of Acute Tritium Releases in Environment – A Soil Dynamic Model
Published in Fusion Science and Technology, 2023
The upgraded model CROPTRIT (including OBT formation at night)[3] has been successfully tested with experimental data for the key crops of interest. The protein turnover as a part of maintenance respiration was also recently included in the model,[4] but the topic is still subject to further studies and needs well-designed dedicated experiments. The model application in field conditions for normal releases demonstrates the importance of night processes, the dependence of crop type, and the receptor site.[3,4]