Non-uniformly perforated plastic bag

1. A method of treating produce comprising

(a) placing a first portion of produce in a bottom a plastic bag;

(b) after step (a), folding said bag to form a layer of bag material over said first portion of produce;

(c) after step (b), placing a second portion of produce in said bag above said layer of bag material; and

(d) after step (c), closing said bag,

wherein the plastic bag has a volume of 100 liters or more;

wherein the plastic bag comprises a plurality of perforations each having an average perforation diameter of 500 micrometers or less;

wherein the plastic bag comprises a lower zone and a top zone,

and wherein the lower zone has a perforation density that is greater than a perforation density of perforation density of the top zone.

2. The method of claim 1 , wherein the ratio of said perforation density of said lower zone to said perforation density of said top zone is 1.1:1 or higher.

3. The method of claim 1 , wherein the perforation density of the top zone of the plastic bag is 2 mm 2 of perforation per m 2 of a surface area of the bag or higher.

4. The method of claim 1 , wherein said produce comprises bananas.

5. The method of claim 4 , wherein the ratio of the banana-specific perforation of the bottom enclosure of said bag to the banana-specific perforation of the top enclosure of said bag is from 0.3:1 to 5:1.

6. The method of claim 1 , further comprising the step of

(e) after step (d), storing said bag for 7 days or more at 20° C. or lower.

7. The method claim 6 , further comprising the step of

(f) after step (e), exposing said bag to an atmosphere that contains ethylene.

8. The method claim 7 , further comprising the step of

(g) after step (f), exposing said bag to an atmosphere that contains a cyclopropene compound.

9. The method of claim 8 , wherein the step (g) is performed at a temperature of 8° C. or higher.

10. The method of claim 8 , wherein step (g) is performed at a temperature of 18.3° C. or lower.

11. The method of claim 8 , wherein step (g) is performed for 4 hours or more.

12. The method of claim 8 , wherein step (g) is performed for 24 hours or less.

13. The method of claim 7 , wherein the concentration of ethylene in the atmosphere is 20 ppm or higher.

14. The method of claim 7 , wherein the concentration of ethylene in the atmosphere is 1,000 ppm or less.

15. The method of claim 7 , wherein the bag is exposed to the atmosphere that contains ethylene for 48 hours or less.

16. The method of claim 1 , further comprising placing the plastic bag in a box.

17. The method of claim 16 , further comprising placing a kraft paper liner in the box prior to placing the plastic bag in the box.

18. The method of claim 17 , wherein the kraft paper liner comprises perforations.

19. The method of claim 1 , wherein the first portion of produce and the second portion produce have a combined weight of 4 kg or more.

20. The method of claim 19 , wherein the combined weight of the first portion of produce and the second portion of produce is 30 kg or less.