Dec. 15,1925 Studies in Western Yellow Pine Nursery Practice 1107 
The survival and development of the stock in the seed bed at 
the end of the season, and the results in the transplant bed, are shown 
in Table III. 
Table III .—Survival and development of western yellow pine in seed bed and 
transplant bed, under different depths of cover and methods of sowing, 1913 
Depth of cover 
Method of 
sowing 
Seed beds 
Transplant beds 
Total germination 
Survival 
Average measurements 
Spring, 1915, survival 
Fall, 1915 
Length of root 
Length of stem 
o 
o 
Si 
«M 
o 
_bjO 
‘5 
£ 
• 
Weight of stem 
Survival 
Diameter of stem 
Height of stem 
Num- 
Per 
Per 
Per 
her 
cent 
Inches 
Inches 
Grams 
Grams 
cent 
cent 
Mm. 
Mm. 
inch.. 
Drills_ 
714 
76.5 
9.30 
2.20 
3.40 
5.80 
79.0 
76.2 
4.90 
6.00 
Broadcast.. 
702 
79.8 
9.20 
1.80 
2.40 
3.85 
83.0 
81.0 
4.50 
4.90 
Average.. 
708 
78.1 
9.25 
2.00 
2.90 
4.82 
81.5 
79.1 
4.70 
5.45 
% inch. ___ 
Drills_ 
577 
79.0 
9.30 
2- 40 
3.00 
5.43 
83.2 
82.5 
4.90 
5.60 
Broadcast.. 
776 
83.1 
9.50 
1.80 
2.35 
3.60 
86.0 
83.0 
4.90 
6.00 
Average.. 
676 
81.4 
9.40 
2.10 
2.68 
4.52 
84.5 
83.8 
4.90 
5.80 
inch_ 
Drills. 
656 
77.3 
9.70 
2.40 
3.08 
5.65 
80.0 
77.7 
4.80 
5.90 
Broadcast.. 
565 
85.3 
10.60 
2.10 
3.13 
4.45 
86.5 
82.2 
4.70 
5.70 
Average.. 
610 
81.0 
10.15 
2.25 
3.10 
5.05 
83.9 
80.6 
4.75 
5.80 
inch__ 
Drills_ 
505 
-59.8 
16.10 
1.90 
3.15 
4.20 
87.0 
84.0 
4.00 
5.90 
Broadcast.. 
“733 
68.2 
11.50 
2.10 
3.25 
4.65 
89.9 
87.3 
4.50 
5.40 
Average.. 
•619 
64.8 
10.80 
2.00 
3.20 
4.42 
88.9 
85.7 
4.70 
5.65 
3 /£ inch__ 
Drills_ 
449 
65.2 
0.50 
2.00 
2.70 
4.60 
92.7 
84.3 
4.50 
5.80 
Broadcast— 
694 
63.1 
11.10 
2.00 
3.05 
4.15 
56.5 
5^5 
4.30 
5.00 
Average.. 
572 
64.0 
10.30 
2.00 
2.88 
4.38 
64.5 
61.9 
4.40 
5.40 
1 inch__ 
Drills_ 
366 
64.8 
9.10 
1.90 
2.55 
4.70 
83.3 
83.3 
4.20 
4.90 
Broadcast— 
621 
72.3 
9.70 
2.00 
2.50 
3.90 
85.6 
84.6 
4.90 
5.10 
Average.. 
494 
69.4 
9.40 
1.95 
2.52 
4.30 
85.1 
84.5 
4.55 
5.00 
Summan 
! 
Total or average for li, and 
H“inch: 
Drills..... 
1,947 
77.5 
9.43 
2.33 
3.16 
5.63 
80.8 
78.9 
4.83 
5.83 
Broadcast_ 
2,043 
82.6 
9.77 
1.90 
2.63 
3.97 
84.9 
82.1 
4.70 
5.53 
Total or average for all depths: 
Drills.— 
3,267 
71.7 
9.50 
2.13 
2.98 
5.06 
83.1 
80.4 
4.70 
5.68 
Broadcast_ 
4,091 
75.1 
10.27 
1.97 
2.78 
4.10 
80.9 
78.3 
4.63 
5.35 
• Depth of cover decreased by washing, causing increase in germination. 
The averages for the broadcast and drilled plots shown in Table III 
bring out the following points: 
(1) The survival in the seed bed is highest for the %-inch covered 
plots, followed closely by the plots with J^-inch and 34-inch cover. 
(2) The seedlings from the plots covered % inch have the longest 
roots, those from % inch and inch covers coming next. 
• (3) The seedlings from the plots covered 34 inch show the largest 
stems and the heaviest tops. 
(4) The heaviest roots were produced on the seedlings from the 
plots covered % inch. The comparison between length and weight 
