A method of treating harvested produce is disclosed, which comprises the step of exposing said produce to an atmosphere containing (i) 100 ppb to 5,000 ppb by volume of one or more cyclopropene compound, and (ii) ethylene, wherein the ratio of ethylene concentration by volume to cyclopropene concentration by volume is from 0.1:1 to 8:1, wherein said exposing is conducted at temperature of -1.5 Deg. C to 25 Deg. C, and wherein said produce preferably comprises one or more fruit selected from the group consisting of pome fruits and tropical fruits.
