376 EARL S. JOHNSTON 
2 pounds of acid phosphate, i pound of muriate of potash, and i}i pounds 
of nitrate of soda. The check trees receiving no fertihzers are designated 
/.oo 
f 
/ 
/ 
/ 
/ 
/ 
/ 
.80 
/ 
/ 1 
I 
.60 
1 / 
/ / 
/ / 
/ / ' 
/ / 
/ / 
,40 
1 / 
/ / 
.30 
/ / 
/ / 
/ / 
/ J 
.20 
./O 
V e) ^ w — 
NOV. DEC. JAN. 
8 0 7 
FEB. MAR. MAR. 
7 7 28 
Fig. I. Graphs showing seasonal variation in green weight (upper pair) and dry 
weight (lower pair) of Elberta (broken lines) and Greensboro (continuous lines) fruit buds. 
by the letters C and CH. Trees growing on high ground are represented 
by the letter II and those on low ground by L. The trees treated with 
fertilizers were on comparatively high ground, and one of the check trees 
