4 The Colorado Experiment Station. 
trees 16 by 32 feet apart. The Winesaps in the rows alternated 
with fillers mostly of Missouri Pippins and Wagners and a few 
Jonathan apple and Elberta peach trees. This orchard has a very 
good soil for fruit trees and the Winesaps are of good size for their 
age. 
TIME OF THINNING. 
Ten trees were selected that had from a fair to a very heavy 
load of apples which were about three-quarters of an inch in di¬ 
ameter. Six of these trees were thinned on June 16th, 17th and 
20th. This was done just as soon after the “June drop” as it was 
possible to tell what fruit would stick. The earlier in the season 
after the “June drop” that thinning of the Winesap can be done, 
the better it will be for the tree and remaining apples. 
The mid-summer thinning was done on July 22nd. Only two 
trees were thinned, and although the per cent, of the better grades 
was as good as from the June thinned trees, it might not have held 
good if more trees had been thinned at that time. The extra 
amount of plant food that is utilized by the apples which remain on 
an early thinned tree, after part of them have been taken off, in¬ 
duces a growth that could not be made by the same number of ap¬ 
ples left on a tree after thinning late in the season. This is one of 
the chief reasons why thinning of apples should be done just as 
early as possible. There have been various attempts to thin the 
bloom instead of the apples, after they have set, but at present no 
method has been devised whereby this can be successfully done. 
This would be hard to do, and undesirable, where killing spring 
frosts are liable to occur. 
THINNING WINESAP-SEASON IQIO. 
Tree 
No. 
No. Apples 
Thinned Off 
• 
Windfalls Before and At 
Picking Time 
Total No. Ap¬ 
ples Picked 
Per Tree 
Total No. 
Borne Per 
Tree 
Thinning 
Distance 
in Inches 
Date 
No. 
Date 
Before 
At Pick 
ing 
No. 
Boxes 
Boxes 
Apples 
Apples 
1 
6-16 
3167 
10-7 
93 
18 
.5 
20.5 
3391 
6669 
About 10 
except in 
2 
6-16 
2550 
10-7 
76 
47 
.5 
21.5 
3526 
6199 
top 
6 to 8 
3 
6-17 
2150 
10-7 
101 
4 
.5 
18 
3134 
5389 
8 
4 
6-17 
1000 
10-8 
48 
12 
.3 
10 
1908 
2968 
10 to 12 
5 
6—17 
1980 
10-8 
58 
40 
.5 
14 
2155 
4233 
About 8 
6 
6-20 
3250 
10-8 
52 
43 
.5 
14 
2036 
5381 
10 
7 
7—22 
2033 
10-8 
40 
15 
.25 
12 
1711 
3799 
8 to 10 
8 
7—22 
3060 
10—8 
75 
21 
.5 
14 
2371 
5527 
6 to 8 
Check 
Not 
1 
10—10 
246 
133 
1.25 
26 
6293 
6672 
T h i u n pO 
Check 
Not 
2 
10-10 
312 
71 
1.25 
16 
3249 
3632 
Thinned 
