Abstract: An improved system and method for evaluating stored agricultural or horticultural commodities is provided. The system and method generally include performing atmospheric measurements within multiple controlled atmosphere rooms, or sampling enclosures coupled to controlled atmosphere rooms, and determining a change over time of a respiratory value of the commodities stored therein. Based on the change over time of the respiratory value, the system and method selects commodities from among at least one of the controlled atmosphere rooms for delivery, marketing, storage, or other disposition.

Abstract: An improved system and method for evaluating stored agricultural or horticultural commodities is provided. The system and method generally include performing atmospheric measurements within multiple controlled atmosphere rooms, or sampling enclosures coupled to controlled atmosphere rooms, and determining a change over time of a respiratory value of the commodities stored therein. Based on the change over time of the respiratory value, the system and method selects commodities from among at least one of the controlled atmosphere rooms for delivery, marketing, storage, or other disposition.

Abstract: A pressure/vacuum relief system having one or more pressure relief/vacuum valve assemblies disposed within the controlled atmosphere room and a vent pipe to provide two-way fluid communication between the relief valve assembly and the outside environment. The relief valve assembly may be a split valve arrangement that includes a pressure valve that opens in response to positive pressure in the controlled atmosphere room and a vacuum valve that opens response to negative pressure in the controlled atmosphere room. The pressure and vacuum valves may be incorporated into a single valve body on opposite sides of a shared chamber that is coupled to the vent pipe. In one embodiment, the vent pipe is fitted through an external wall of the controlled atmosphere room.