STRAWBERRY DISEASES 421 
The disease is usually less severe in Florida, Louisiana and 
other southern states. 
In many cases the amount of injury done by the leaf-spot is 
doubtless over-estimated. Yet it must be remembered that 
the disease does some damage nearly every year, so that after 
all the pest is not only one of the most common but also one 
of the most destructive to strawberries. In certain localities 
it is of comparatively slight import, while in other places 
whole plantations have been completely destroyed. In south- 
ern Illinois, a leading strawberry section, leaf-spot is regarded 
as one of the worst enemies of this fruit. In Connecticut, one 
grower is said to have experienced a loss of $250 an acre, while 
the damage done in 1904 to Maryland strawberries is esti- 
mated at 21 per cent of the total acreage. This approximates 
a loss of $50,000. 
In the ordinary cases of attack the foliage is impaired; in 
severe cases the leaves are affected to the extent that the plants 
die. In any case, the prospect for the next year’s crop is 
usually threatened. If the fruit-pedicels are attacked, the 
berries never mature but remain small, become shriveled and 
worthless. 
The most serious injury is said to occur on such varieties as 
the Wilson, Hunn, Beeder Wood, Warfield, Sanafee, Photo, 
Monmouth and Ohio. The varieties which resist the disease 
to a noticeable degree are the Marshall, Brandywine, Lady 
Thompson, Michel’s Early, Daisy, Eureka and Jewell. It 
is not guaranteed, however, that the resistance and susceptibility 
herein indicated will be found applicable or reliable in all 
strawberry sections. It is well to bear in mind that ecologic 
factors may have no little influence in this respect. Accordingly, 
then, observations as to varietal resistance should be care- 
fully considered. It is generally held that vigorous plants are 
no more resistant than the more feeble individuals. It has 
also been observed that plants growing on heavy, wet, undrained 
