Part II] Hole: Regeneration of Sal (Shorea rohusta) Forests 17 
separately for the two halves of each bed, each such area thus being 9 
feet x3 feet. 
To test the effect of burning off the dead leaves on the seedlings in the 
shade, a layer of dead sal leaves, 6 leaves thick, was laid on the surface of 
the soil in the eastern half of the bed in plot Y and burnt off in June 
1916. At the same time, a similar layer of leaves was spread on the 
surface, in the western half of the bed and left intact. The annual fall 
of dead leaves was removed by brushing from both halves of the bed 
in 1912, 1913, 1914, 1915, 1917 and 1918. 
The bed in plot IV was hand-weeded during the first rains, but 
after this weeding was unnecessary. 
22. An abstract of the observations recorded is given below:— 
Plot IV. Overhead 
COVER REMOVED, DIAME¬ 
TER OP CLEARING 60 
feet. Light intensity 
0-2. 
Plot V. Overhead cover 
MAINTAINED. LIGHT INTEN¬ 
SITY 0-06. 
. 
Plot. 
Northern 
half of bed 
9 feet x 3 
feet. 
Southern 
half of bed 
9 feet x 3 
feet. 
Eastern 
half of bed 
9 feet x 3 
feet. Layer 
of dead sal 
leaves, 6 
leaves thick, 
burnt off 
in June 
1916. 
Western 
half of bed 
9 feet x 3 
feet. Layer 
of dead sal 
leaves, 6 
leaves thick, 
left on sur¬ 
face in June 
1916. 
IfEBMARKS. 
Date of Sowing . 
June 24th, 1913. 
All percentages 
are calculated 
on the number 
of seeds sown. 
In calculating 
the average 
height and 
root diameter 
the best plant 
per 9 square 
feet of area has 
Number of seeds sown 
200 
200 
200 
200 
Percentage of healthy plants 
at end of 2 years on Julv 
8th, 1915. 9 
Average height of plants on 
July 8th, 1915, in inches. 
59 
19-9 
34 
8-2 
Percentage of healthy plants 
in April 1916. 
26 
23 
been selected. 
Average height of plants in 
inches in April 1916. 
9-3 
9-8 
Percentage of healthy plants 
in July 1916 after burning 
leaves in east half of bed in 
plot V.. 
• * 
14 
13 
Average height of plants in 
inches in July 1916. 
6-0 
a 10‘8 
Percentage of healthy plants 
after 5J years in January 
1919. 
22 
39 
8 
7 
30-5 
7*5 
Average height of plants in 
inches in January 1919. 
65 
43-9 
8-3 
10-6 
54*5 
9-5 
Average diameter of base of 
root in inches in January 
iQin 
Q'2 
0-2 
0>2 
o 2 
[ 179 ] 
