A system 1 is used for gas and/or volatile organic compound monitoring of an agricultural product 2 in a storeroom, transportation container or bed or field 3 containing a set of gas sensor units 11. Gas sensors 14 may detect gases, vapours and/or volatile organic compounds which may be indicative of a disease, such as bacterial soft rot, or a disorder such as black heart in the agricultural product or to monitor the condition of the agricultural product, such as freshness or ripeness, or track the level of a chemical used to treat the agricultural product, such as a sprouting suppressant. The agricultural product 2 may be a crop such as a potato, onion or other vegetable. The gas sensors 14 are selected from metal-oxide gas sensors, electrochemical gas sensors, conducting/composite polymer gas sensors, photoacoustic gas sensors, piezoelectric gas sensors(s), infrared gas sensors or photoionization detector gas sensors.
