Indian Forest Records . 
[Vol. vin 
first year after the clearing or, at latest, in the second year, 
and dense weed growth of this kind should not be encountered. 
Omitting the results for sub-plot lie, we get the following 
results in Plot XVIII after 1J years : 
percentage living plants = 10 
average height growth = 14 inches. 
This is distinctly better than Plot XXVI, in which the overhead 
cover was not completely removed, with 12 per cent, survivals 
and a height-growth of only 7 inches. 
(7) In Plot XXVI, in which the overhead cover had been only 
partially removed, the seedling growth was distinctly patchy, 
and was invariably best where there was least overhead 
cover or where the ground was most exposed to the sun 
from the south. In June 1917, also, when the sowings 
were carried out, the trees had been badly defoliated by 
caterpillars, and the results in the plot, as a whole, are pro¬ 
bably considerably better than would be obtained under 
ordinary circumstances. The usual advantages quoted 
for the system of leaving partial cover as compared with 
that of complete clearing are : 
(а) More seed reaches the ground from the trees standing on the area, 
(б) Weed growth is less. 
As regards (a), sal seed is carried quite a considerable distance 
by the wind ; in 1916, the writer collected in these forests 
34 seeds from an area 18 feet X 3 feet, the nearest trees 
to the edge of the area being at a distance of 48-J feet, 
and 7 seeds from an area of 27 square feet situated 
87 feet from the nearest trees. A considerable quantity 
of seed, therefore, can find its way on to a cleared 
strip 60 feet wide, and even if a greater quantity does 
fall on the partially cleared area, this is discounted by the 
larger proportion of seed which fails to germinate and 
of seedlings which fail to survive under the cover of the 
trees. Moreover, owing to the uncertainty of good seed 
years, no really satisfactory system of regeneration 
can rely entirely on natural seed. With reference to 
(6), while in a given time less weed does no doubt 
establish itself where shade trees are left than where the 
cover is entirely removed , this is more than counter¬ 
balanced by the following considerations : 
(1) The weed growth is strongest where the seedlings chiefly survive, 
i.e* where there is least shade. 
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