To obtain a clear image of an agricultural land regardless of an environmental change of the agricultural land. ! A field crop information management system includes: a data collection device 3 for obtaining field crop information in the agricultural land and an information processor 2, to which the field crop information is sent from the data collection apparatus 3. The system includes: an imaging device 50 which the data collection apparatus 3 images a plurality of images in a single operation; an image evaluation instrument 71 which calculates a focus evaluating value in an evaluation region including field crop images among each images; an image selector 72 selecting the image which the most highest focus evaluation value is calculated among from the focus evaluation values of the respective images; and a transmitter 73 which transmits the selected image to the information processor 2. ! (C)2012,JPO&INPIT
