The document discusses moisture content in agricultural products and its measurement. It defines moisture content as the percentage of water in a product by weight. Moisture content is important for determining storage and processing suitability. It can be measured directly by oven drying or indirectly using electrical resistance or dielectric methods. Equilibrium moisture content (EMC) is the moisture level a product reaches when exposed to a constant temperature and humidity, and indicates whether it will gain or lose moisture. EMC curves are used to determine drying characteristics and predict drying outcomes. Hysteresis refers to the difference between desorption and adsorption EMC curves.