University of Arizona 



311 



Following is a summary of the storage tests as revealed Sep- 

 tember 15 when the potatoes were examined: 



TAIILIC IV. — STORAGE TESTS WITH POTATOES 



In the case of the potatoes that were coated with paraffin the 

 entire lot rotted by the end of four weeks, which indicates that the 

 exclusion of air is absolutely detrimental to the keeping qualities 

 of the potato, and emphasizes the importance of thoro ventilation 

 during storage. As shown in the table, the method of storage in 

 which the potatoes were spread out thinly in ventilated bins, as 

 well as the dugout method of storage, gave a rather high percent- 

 age of sound potatoes. While these results are not conclusive, they 

 do indicate that it is easily possible for the home gardener to pre- 

 serve the spring crop of potatoes thrti the summer for culinary use 

 and as seed for a late summer crop. 



In tests made to determine the best depth and time of planting 

 for the late summer crop, practically all the potatoes rotted in the 

 ground. This was apparently due to the hot temperature of the 

 soil at planting time, coupled with excessive moisture conditions. 



It is believed that modified methods of planting contemplated 

 for trial next season will give more satisfactory results. Plantings 

 are being continued thruout fall, winter, and spring at intervals of 

 ten days in order to determine the best planting date for the spring 

 crop. 



SPINACH AS A MARKET GARDEN CROP FOR SOUTHERN ARIZONA 



Ranking first in importance among the vegetables grown for 

 "greens" in the United States, and being particularly well adapted 



