944 
Journal of Agricultural Research 
Vol. XXVIII, No. 9 
The data in Table VI show that the greatest amount of shedding of all varieties 
for both 1922 and 1923 occurred during the period from July 10 to August 20, 
when temperatures were highest and abrupt weather changes occurred. 
Fig. 4. Showing percentage of bolls shed and bolls retained on 25 representative plants of each 
variety in 1922 and 1923 
In figure 4 the percentage of bolls shed and bolls matured by each variety for 
1922 and 1923 is shown graphically. The large proportion of bolls matured and 
the correspondingly small number of bolls shed, conspicuously characterize the 
Pima variety in comparison with the Upland varieties. 
Table V.— Number of flowers produced , and bolls shed per day , and bolls matured 
by 25 representative plants of 4 cotton varieties in 1922 
Variety 
Date 
Acala 
Durango 
Pima 
Lone Star 
Num¬ 
ber 
flow¬ 
ers 
Bolls 
shed 
Ma¬ 
ture 
bolls 
Num¬ 
ber 
flow¬ 
ers 
Bolls 
shed 
Ma¬ 
ture 
bolls 
Num¬ 
ber 
flow¬ 
ers 
Bolls 
shed 
Ma¬ 
ture 
bolls 
Num¬ 
ber 
flow¬ 
ers 
Bolls 
shed 
Ma¬ 
ture 
bolls 
June 22. 
3 
3 
0 
23. 
i 
0 
1 
1 
1 
0 
24. 
1 
1 
0 
1 
1 
0 
25. 
1 
1 
0 
1 
0 
1 
28. 
1 
0 
1 
2 
1 
1 
27,. 
5 
2 
3 
5 
2 
3 
28. 
4 
1 
3 
2 
2 
0 
29. 
1 
1 
0 
3 
1 
2 
2 
0 
2 
30.. 
8 
4 
4 
2 
0 
2 
July 1. 
5 
0 
5 
4 
1 
3 
2 
1 
1 
2. 
6 
3 
3 
2 
2 
0 
1 
0 
1 
3. 
6 
6 
0 
4 
4 
0 
3 
0 
3 
4. 
10 
4 
6 
3 
2 
1 
4 
1 
3 
5. 
12 
7 
5 
3 
3 
0 
4 
3 
1 
6. 
22 
18 
4 
13 
13 
7 
11 
9 
4 
2 
4 
g 
o 
O 
1 
q 
1 
A 
7. 
20 
12 
8 
9 
2 
o 
o 
o 
m 
q 
8. 
19 
10 
3 
8 
11 
1 
0 
A 
7 
o 
A 
o 
3 
1 
u 
1 
9. 
24 
17 
7 
15 
12 
3 
t 
11 
* 
2 
A 
l 
