An apparatus (800; 900) for processing agricultural matter comprising: a first compartment (805; 910), for receiving agricultural matter from an external source; a second compartment (815; 905a, 905b), for processing agricultural matter; a third compartment (875; 965), for receiving processed agricultural matter; a first re-sealable airtight seal (810; 915), disposed between the first compartment (805; 910) and the second compartment (815; 905a, 905b), and a second re-sealable airtight seal (880; 970), disposed between the second compartment (815; 905a, 905b) and third compartment (875; 965), through which agricultural matter passes; a vacuum source, operably connected to the second compartment (815; 905a, 905b), that evacuates air from at least the second compartment (815; 905a, 905b); a gas supply, operably connected to at least the second compartment (815; 905a, 905b), that provides gas to the second compartment (815; 905a, 905b); a plasma ionizer (845, 850; 945, 950), operably associated with the second compartment (815; 905a, 905b), that ionizes gas in the second compartment (815; 905a, 905b) into a plasma; an RF generator configured to provide a plasma striking voltage and operating power; an RF matching network, configured to match an impedance of the RF generator; a plasma controller, operably associated with the second compartment (815; 905a, 905b), that controls plasma flow within the second compartment (815; 905a, 905b); characterized in that the apparatus further comprises: a first ridged sheet; a first actuator connected to a side of the first ridged sheet and configured to move the first ridged sheet linearly, or to vibrate, rock, or swirl the first ridged sheet, such that the first ridged sheet moves agricultural matter within the second compartment (815; 905a, 905b); a second ridged sheet; and a second actuator connected to a side of the second ridged sheet at a location opposite the first actuator, wherein the second actuator is configured to move the second ridged sheet linearly, or to vibrate, rock, or swirl the second ridged sheet, such that the second ridged sheet moves agricultural matter within the second compartment (815; 905a, 905b). a first compartment (805; 910), for receiving agricultural matter from an external source; a second compartment (815; 905a, 905b), for processing agricultural matter; a third compartment (875; 965), for receiving processed agricultural matter; a first re-sealable airtight seal (810; 915), disposed between the first compartment (805; 910) and the second compartment (815; 905a, 905b), and a second re-sealable airtight seal (880; 970), disposed between the second compartment (815; 905a, 905b) and third compartment (875; 965), through which agricultural matter passes; a vacuum source, operably connected to the second compartment (815; 905a, 905b), that evacuates air from at least the second compartment (815; 905a, 905b); a gas supply, operably connected to at least the second compartment (815; 905a, 905b), that provides gas to the second compartment (815; 905a, 905b); a plasma ionizer (845, 850; 945, 950), operably associated with the second compartment (815; 905a, 905b), that ionizes gas in the second compartment (815; 905a, 905b) into a plasma; an RF generator configured to provide a plasma striking voltage and operating power; an RF matching network, configured to match an impedance of the RF generator; a plasma controller, operably associated with the second compartment (815; 905a, 905b), that controls plasma flow within the second compartment (815; 905a, 905b); a first ridged sheet; a first actuator connected to a side of the first ridged sheet and configured to move the first ridged sheet linearly, or to vibrate, rock, or swirl the first ridged sheet, such that the first ridged sheet moves agricultural matter within the second compartment (815; 905a, 905b); a second ridged sheet; and a second actuator connected to a side of the second ridged sheet at a location opposite the first actuator, wherein the second actuator is configured to move the second ridged sheet linearly, or to vibrate, rock, or swirl the second ridged sheet, such that the second ridged sheet moves agricultural matter within the second compartment (815; 905a, 905b).