
New YorK AGRICULTURAL EXPERIMENT STATION. 65 
During the latter part of July the disease began to appear abun- 
dantly on the unsprayed row. By August 2d the contrast between 
the sprayed and unsprayed rows was very striking and as time 
passed this contrast became more marked until at the time of 
the last spraying, September 7th, the unsprayed plants were all 
ruined and most of them were dead, while the sprayed plants 
were in perfect health. (See Plates IV and V.) 
RECOMMENDATIONS FOR TREATMENT. 
Cuttings should be taken from healthy plants only. Anthrac- 
nose is often transmitted from one generation of plants to the 
next by means of infected cuttings; hence plants grown from 
cuttings usually suffer more from anthracnose than do plants 
grown from seed. It is very improbable that the disease can be 
transmitted by means of the seed. 
So far as known at present, this anthracnose attacks no other 
plant besides the Antirrhinum. Therefore, the florist whose 
grounds are free from the disease will have no trouble so long as 
he propagates only from his own stock or from seed. In such a 
' case the source of danger is in diseased cuttings and plants from 
other establishments. How far the disease may be carried by 
the wind is not known, but probably less than a half mile. 
Where anthracnose is troublesome spraying with Bordeaux 
mixture should be commenced as soon as the cuttings are rooted 
and continued until the plants are transplanted into the green- 
house in the fall. The spraying should be done thoroughly and 
at intervals of from one to two weeks, according to the weather 
and the severity of the disease. If the plants can be kept free 
from disease until they go into the greenhouse, it may not be 
necessary to give them further treatment. Should it seem neces: 
sary to spray in the greenhouse, we would suggest the use of 
ammoniacal solution of copper carbonate, as it will not spot the 
flowers and foliage so much. Overwatering should be carefully 
avoided and the foliage wet as little as possible. Thorough ven- 
tilation will also aid in keeping the disease in check. 
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