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Why must harvested rice be dried before storage?
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Cereal farming
Combine harvesting wheat.
Harvested rice must be dried to approximately 14 percent moisture content before storage to prevent deterioration.1
Maintaining a low moisture level is critical for several reasons:
- Inhibition of Spoilage: High moisture content creates an environment that promotes the growth of yeast, bacteria, and molds, all of which cause spoilage.23
- Control of Respiration: Grain naturally undergoes respiration, a process that generates heat. If the moisture content is high (typically over 16 percent), this heat cannot dissipate effectively, leading to a temperature rise that further accelerates respiration and risks damaging the grain.3
- Pest Prevention: Excessive heat and moisture provide a favorable environment for various insects and mites that feed on stored cereal grains, such as the grain weevil.3
By drying the grain, farmers ensure the stability of the crop, preventing significant losses in weight, milling quality, and nutritional value during storage.13