Manuel, Luther John R. creator Foliente, Joanne Lu, Mengke Yaptenco, Kevin F. text monographic eng

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pp. 17-34 23cm. by Luther John R. Manuel, Joanne Foliente, Mengke Lu and Kevin F. Yaptenco This study evaluates a simulation model of drying hybrid rice seeds in deep-bed set-up. This model is based on a heterogenous diffusion model for predicting grain moisture at different levels on a deep-bed drying set-up was developed. To evaluate this, hybrid rice seeds were dried in a laboratory dryer with a 50-cm depth test cell. Three drying setups (45 C, 55 C, and stepwise) were used. During drying, moisture content was measured at different levels of cell and at specified time intervals. Around four months after storage, germination percentage of samples from different drying setting and grain locations were obtained. The drying experiment revealed that the fastest drying time is achieved with the 55 C drying temperature. Parameter estimation and model validation of the simulation have revealed that the model used can well predict the moisture content of seeds across the deep-cell drying bin at any given time. This can be further supported by the mean relative error of the model which is below its acceptable values. Germination results have also shown that the drying procedures used have no negative effect on the seed quality. Thus, using simulation model could be an accurate way to predict the moisture content with no effect on its seed quality. hybrid rice deep-bed drying heterogeneous diffusion model germination test variable temperature drying Per/581.4/M319/2023 0119-7312 250130 20250130094001.0