•9- 



filled as quickly as possible, but not so quickly 

 removal takes more than 7 days. Immediately afte 



room is sealed and 0- 



is reduced to below 2% with an 

 at 1.0 to 1.5% and the CO 



that field heat 

 r filling, the 



The 0-;, is then held «., ^.^ uw ^.^u ^iivx ^i,^ ow- 

 the entire season. Benefits from low Oy CA seem 

 benefits from rapid CA. We recommend keeping the 

 Too many cases of low 0-^ injury have occurred in 

 when lower O2 concentrations were used experiment 

 commercially (by accident) . We also saw and tast 

 injury on Delicious in Wenatchee. (4) High CO^ p 

 (about 14% for 10 days) is rapidly being replaced 

 and low 0^ CA because the latter 2 strategies yie 

 flesh firmness advantage and will not cause CO^ i 

 apples. With the exception of Washington and vir 

 Golden Delicious, high CO^ pretreatments have not 

 ing because injury has occurred when CO^ was suff 

 to increase flesh firmness. 



O2 

 the 



burner, 

 below^ 1% for 

 to be similar 

 above 2%. 

 northeast 

 ally and/ or 

 ed some low Oy 

 retreatment 



by rapid CA 

 Id the same 

 njury to the 

 ginia grown 



looked promis 

 iciently high 



to 



M 

 Every s 

 least 1 

 between 

 and the 

 evapora 

 through 

 are loc 

 wall in 

 in the 

 below) 

 can be 

 to the 



n spacing and 



tora 

 2 in 



row 



mos 

 tors 



the 

 ated 



sma 

 cent 

 the 

 stac 

 evap 



ge w 



ches 



s of 



t un 



are 



bin 



ove 



Her 



er o 



door 



ked 



orat 



e saw 

 clear 

 bins . 

 if orm 



locat 

 s and 

 r the 



rooms 

 f the 

 s are 

 across 

 ors . 



stacking p attern 

 had yellow 



ance from 



To assur 

 temperatur 

 ed to move 

 back to th 

 center ais 



In the 

 short wall 

 located at 

 the room. 



paint 

 all wa 

 e the 

 as thr 



the a 

 e evap 

 le in 

 large 

 , but 



the e 



chann 



s^ are given top priority, 

 ed on the floor to assure at 

 lis and 4-1/2 to 6 inches 

 fastest possible cooling 

 oughout the storage season, 

 ir quickly on a short route 

 orators, i.e., the evaporators 

 large rooms and on the long 

 rooms the doors are located 

 in small rooms (see drawing 

 dge of the short wall so bins 

 eling the air quickly back 



— Door 



Direction of 

 bin stacking 



i -^ 



We returned to the ea 

 rate of growth in the Wash 

 CA innovations, some of wh 

 following should be consid 

 acrylic rubber gas seals f 

 of the time between harves 

 between harvest and 2 to 3 

 at the expense of rapid fi 

 spacing to channel the air 

 facilitate rapid field hea 

 throughout the storage sea 



St coast impress 

 ington CA apple 

 ich can be adapt 

 ered for immedia 

 or ceilings to c 

 t and rapid 0^ p 

 % O2 should be 7 

 eld heat removal 

 quickly back to 

 t removal and un 

 son. 



ed with the size and the 

 industry and with the many 

 ed to our conditions. The 

 te adaption. (1) Plywood- 

 ut costs. (2) Minimization 

 ulldown. The time interval 



days if possible, but not 

 (3) Bin stacking and 



the evaporator (s) to 

 iformly low temperatures 



