Moisture content can be determined using a moisture meter specifically designed for crops. Samples of the harvested crop are taken and tested using the moisture meter. Additionally, some crops have visual indicators such as seed color changes or weight loss that can give an estimate of moisture content.
Use a resistance-type moisture meter that gives quick results and only uses small samples. Delmhorst’s agriculture moisture meters help farmer manage the moisture content of different crops to ensure better yields and quality.
I think it is a common method that first the sample is weighed and its fresh weight is recorded, then it is placed in the oven and dried at 50-60 degrees Celsius, and then the sample is weighed again and the weight is Its dry weight is measured. The amount of moisture is determined from the difference of two numbers, fresh weight and dry weight.