ANTHRACFOSE OF THE MAFGO IN FLORIDA. \) 
On March 28 ail the flowers were dead and dry, and most of them 
were still adhering to the pedicels. On April 5 the pedicels showed 
diseased spots as far as the flowers extended. No infection developed 
on the peduncles. Both the peduncles and pedicels were covered 
with Bordeaux mixture at this time. The spots on the pedicels 
developed beneath the mixture, indicating that infection had taken 
place through the blossoms. A number of these pedicels were placed 
in a moist chamber, and they all produced spores of the anthracnose 
fungus in abundance. These observations coincide entirely with those 
made on the sprayed seedling tree in the Hoop experiment in the 
spring of 1912. 
Very little infection occurred in 1913 before the blossoms opened, 
and this was undoubtedly due to the fact that the weather was 
quite dry during seven of the first eight days that the bloom was 
putting out. 
Resistant varieties seem to be the only solution of the blossom- 
blight problem in localities that are subject to rainy weather at 
blooming time. The Mulgoba mango seems to possess this resistant 
quality in some degree. A. single Mulgoba tree on the Roop farm 
bloomed at the same time as the seedling trees used in the experiment 
in the spring of 1912 and received the same spray treatment on the 
same dates, from the time the buds began to swell until the fruit was 
harvested. This tree was located most favorably for infection, in 
the midst of seedling trees which bloomed at the same time, but it 
set a good crop of fruit and carried it through to maturity. No fruit 
was set on the seedling trees, with the exception of the one that was 
sprayed. 
On the Boggs farm, south of Miami, was found a collection of 
Mulgoba and seedling mangos intermixed in the planting. Most of 
these trees bloomed in March, 1912, and none of them were sprayed. 
The seedlings set no fruit, while the Mulgoba trees set a fair crop. 
The disease developed, however, quite seriously on the young fruits 
a week or ten days after they were formed. The peduncles and 
pedicels developed the disease also, so that none of the fruit was 
carried to maturity. Plate II, figure 3, shows the diseased condition 
of the pedicels after the fruit had set. Plate II, figure 2, shows 
a pedicel which blighted without setting fruit. 
On the Flanders place a similar condition was observed. The 
flowers on the unsprayed blocks seemed to set fruit quite as well as 
those on the sprayed blocks, but the unsprayed fruit developed disease 
a week or ten days after it was formed, and, as the peduncles and 
pedicels were likewise diseased, practically none of it matured. There 
is some evidence to show that the Sundersha variety possesses the 
quality of resistance. 
Briefly, then, it seems that the inflorescence can be kept in a 
disease-free condition by spraying often enough, and that after the 
