Dynamic analysis of stomata characteristics in red chili plants using plant factories

This research aimed to develop a dynamic model to simulate the stomata behavior of red chili plants (Capsicum annuum) in response to environmental factors such as light intensity, temperature, and humidity in a plant factory setting. The methodology involved utilizing Vensim PLE 7.35 software to create a dynamic system model with a causal loop diagram (CLD) to describe the relationships among the influencing variables. Data was collected from chili plants cultivated in a controlled growth chamber, and various climate-related factors were analyzed, including light intensity, temperature, and humidity. Stomata behavior was simulated using a flow diagram, followed by applying equations to each variable to generate a dynamic model representing stomata opening and closing under different light conditions. The model was validated against real-world data using the Mean Absolute Percentage Error (MAPE) method, revealing error rates of 6.86 for stomata pore area and higher rates for other variables like light intensity. Despite achieving high accuracy in modeling stomata behavior, the model's elevated MAPE values indicate the need for further refinement to enhance its predictive capabilities in practical applications. This methodology optimized environmental control for sustainable crop production in plant factories. © Published under licence by IOP Publishing Ltd.