Part II] Hole: Regeneration of Sal (Shorea robusta) Forests 27 
(4) After the removal of the cover in May 1916, the Sub-Plots, in 
this case, were not weeded. The weed growth was scanty 
in 1916 but increased in 1917, and in June 1918 the surviving 
plants were being suppressed and weeding had become essen¬ 
tial. 
Thus this system does not eliminate the necessity for weeding, 
unless the plants are considerably older than 3 years before removing 
the cover. 
Conclusions. 
28. Removing the overhead cover in patches 60 feet in diameter 
from above 3-years-old seedlings raised in the shade results in a high 
percentage of deaths (79 per cent, of the existing seedlings) and 
weeding becomes necessary two years after the felling to prevent the 
suppression of the surviving plants. This indicates that seedlings 
raised in the shade should not be freed from overhead cover until 
they are considerably older than 3 years. 
Experiment No. V. 
Object to test the advantages of regenerating in the open, in average and 
not particularly favourable seasons, to test the effect of clearings of 
different sizes and to obtain information regarding the extent and kind 
of weeding necessary. 
29. As the remarkably good results in the way of seedling growth 
in the open in Plot IV reported in Experiment III above and in Plots 
VIII and III reported in Ind. For. Rec. V, 4, Part II, p. 61 (1916) had 
been obtained in an unusually favourable season, i.e. 1913, it was obvi¬ 
ously desirable : 
(1) to repeat the experiment on a larger scale to see if similar results 
could be got in a less favourable season. 
(2) To obtain some information regarding the advantages of clearing 
areas of different sizes. 
(3) To obtain some information regarding the extent and kind of 
weeding which is necessary before sal seedlings can be 
thoroughly established in the open. 
These were the objects of the present experiment. 
30. The areas utilized in this experiment were the following, all 
situated in the Lachiwala forest near Plots IV, V and VI :— 
(1) Plot XVII. —A strip 300 feet long and 60 feet wide, running 
due north and south. 
(2) Plot XVIII. —A strip 300 feet long and 100 feet wide, running 
due north and south. 
(3) Plot XIX. —A square, the side of the square being 60 feet long. 
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