57 



Showing effect on Grapes. 



Anthracnose.'^Tlm disease BLACK EOT. 



which is commonly known ;is 

 Black Spot and scientifically as 

 Spaceloma ampelinttm is a very 

 troublesome fungus to Grape 

 Vines. It first makes its appear- 

 .ance in the form of minute 

 black circular dots on stems, 

 leaves, and berries, and tliu^e 

 gradually enlarge till they are 

 half-an-inch across or more. As 

 they advance in age and size 

 these spots become lighter in 

 colour. If not checked promptly 

 as soon as it is discovered, this 

 fungus spreads rapidly and will 

 cause much damage. Its effects 

 upon both the leaves and fruit 

 cause them to gradually shrink 

 up and drop off. This pest is 

 not easily eradicated if it gets 

 established, and though it may 

 be kept in check by the judicious 

 use of remedies, it is likely to 

 reappear more or less the follow- 

 ing season. Consequently the 

 cuttings and leaves of affected 

 plants should, as far as may be 

 practicable, be destroyed by 

 fire. The most effective remedy 

 is the Bluestone Ammonia 

 Solution used as a spray. 

 Apply just as the Vines are 

 coming into leaf, again when 

 the flowers appear, and give a 

 third spraying when the Grapes 



are the size of small peas. Further applications, if necessary, should 

 be given at intervals of three or four weeks till the berries attain their 

 full size. Bordeaux Mixture and Eau Celeste also make effective sprays 

 and Sulphate of Iron is considered to be a good remedy. 



Black Rot. This disease is very often comfounded with Anthrac- 

 nose, but they are quite distinct. Though the effects are somewhat 

 similar. The fungus is known scientifically as Phsolospora {Lock- 

 stadia) Bidwillii. It makes its appearance in minute dots upon 

 foliage and fruit. These dots increase rapidly in size if not checked, 

 and as the fungus growth extends the leaves and fruit shrivel up. 

 Several remedies are used with more or less success including 1 

 Bordeaux Mixture, Eau Celeste and Ammonia Carbonate of Copper. 

 Directions for making and using these preparations will be found 



