58 STORRS AGRICULTURAL EXPERIMENT STATION. 
The general health and the firm character of the fruits from 
the sprayed vines was noticeable at each picking; for these 
fruits were firmly attached to the vines, while those from the 
unsprayed vines were loosely attached or had fallen before ready 
to pick, This was still more noticeable at the last picking, 
when all green fruits as well as the ripe were picked. Many 
of the green fruits of the unsprayed rows had fallen from the 
vines or were loosely attached and more or less soft, while those 
from the sprayed rows were so firmly attached that they were 
picked with difficulty. 
All varieties of tomatoes are not equally subject to disease. 
Of sixty-seven varieties of tomatoes on the College trial plot, 
some were defoliated, while some were but slightly diseased. 
The large, potato-leaved varieties seem to be less subject to this 
disease than the smaller, finer-leaved, and earlier varieties. 
DISEASES OF TOMATOES. 
The disease that caused the decrease of yield of the un- 
sprayed plants in these two experiments was the leaf blight © 
(Septoria licopersica). It is first noticeable as small, black or 
brown spots on the leaves and stems of the plants, occurring 
first on the lower and older leaves; but with favorable weather 
it spreads rapidly till the plant is defoliated and the spots on the 
stems have coalesced into irregular, blackish patches. If a 
piece of bark with these spots be examined undera high power 
microscope, innumerable small, crescent-shaped bodies may be 
seen. ‘These are the fruiting spores of the fungus. 
Another disease that did some damage to the fruits was the 
black rot (Macrosporium tomato). ‘This disease attacks the 
blossom end of the fruits, usually before ripening. Spraying 
did not entirely prevent this disease, nor was it less prevalent 
on the fruits of plants tied to stakes than on those lying on the 
ground. 
CULTURAL METHODS. 
Little comment need be made on the different systems of 
growing tomatoes in these two experiments. A glance at 
Table 17 will show that the total yield.of tomatoes on either the 
sprayed or unsprayed vines of those trimmed to one stem and 
tied to stakes was only about one-half as much as from those on 
