50 



ANNUAL REPORT 1918 AND 1919 



interest and permanent value not read at any meeting of the Association, 

 such as that on "Exploring Guatemala for Desirable New Avocados" by 

 Mr. Wilson Popenoe, Agricultural Explorer of the U. S. Department of 

 Agriculture. There are charts for orchard planting and photographs of 

 fruit and trees admirably reproduced. These reports, with the forthcoming 

 Volume for 1918-1919, which will contain the record of the sixth semi- 

 annual meeting held at Los Angeles May 1 7th and 1 8th, and this, the 

 seventh semi-annual or fourth annual meeting, are the storehouse of knowl- 

 edge about our industry. They show how very far we have traveled within 

 a short compass of time, and are prophetic of the day hailed by our "poet 

 laureate." 



"When thru all the states of our dear Native land. 

 This fruit, with our orange, shall go hand in hand." 



SUMMARY OF REPORTS ON DAMAGE FROM FROST 

 DURING THE PAST WINTER 



By Chas. D. Adams, of Upland 



Undoubtedly the directors, in turning over to me the papers received 

 on this subject, had in mind simply a very short summary of their contents 

 as an opening to a general discussion of the frost and its results; since the 

 papers were not numerous and I have, to make up the lack, no harmful 

 personal experience to relate. 



The windstorm which occurred the latter part of November, though 

 restricted in its scope, was very severe where it prevailed and did more 

 damage, in those localities than the cold which followed it, later in the 

 season. Those who write from these places naturally report about both 

 the wind and the cold. It would seem very proper that both should be 

 included in our discussion today. 



The experience of different growers in different localities, as to which 

 ones of our best varieties proved most cold resistant, most wind resistant, 

 and most heat resistant, during the time they have been Avocado growers, 

 is the kind of information we are all seeking in making up our minds as 

 to what we want to plant ourselves or advise others to plant. The tree, 

 other things being equal, that will best stand up under adverse conditions, 

 is the one we are studying to discover. 



Besides methods of protection against frost, wind £uid heat, brought 

 forward in our discussions, we are gradually learning where we can and 

 where we can not safely plant the desirable Guatemalan varieties. For 

 this purpose we know, as a rule, the foothill sections are the best. In this 

 connection it is interesting and instructive to study the frost effects, at 

 different elevations, in a district of Avocado plantings. Of the letters 

 received, practically all touch on this point. 



A writer from Yorba Linda states the frost seemed to have missed 

 all trees on high ground, but my hundred trees on low ground were badly 

 frozen. In the Upland grove situated at the highest elevation no damage. 

 Several hundred feet further down some leaves burned and some young 

 shoots killed. Three or four hundred feet further down, close to the 



