REPORT OF THE SOCIETY 49 



INJURIOUS FUNGI OF STE. ANNE DE BELLEVUE, 1917 

 By P. I. Bryce, Macdonal^ College. 



The weather of 1917 during the growing season should be kept in mind while 

 considering the occurrence of the fungi mentioned. 



While most of those diseases may be said to be present each year, and some 

 are not specially injurious, under favorable conditions as regards heat, light, air 

 movement and moisture certain of them assume the epidemic form and impair 

 or ruin a crop over widespread areas. 



Under the influence of these conditions the crops showed more or less suscep- 

 tibility to fungi attacking leaves, stems, fruit or the roots, as the case might be. 



In alfalfa, of which many varieties were grown, in early July the Leaf Spot 

 caused a loss all the more severe because the leaves are so liable to drop in curing. 

 At the edge of the spots the epidermis is raised and dark brown, but the centre is 

 lighter colored when the pustule bursts. The leaf may be entirely covered with the 

 disease and soon withers. 



The Apple Black Rot damaged the fruit of trees on which were Black Rot 

 Cankers and mummied fruit. It is believed that trees sprayed properly are well 

 protected, but cankers following sun scald should be removed, and covered with 

 grafting wax, and all large scars painted with coal tar. Destroy all infected fruit 

 as soon as possible. Weakened apple and plum limbs suffered from the attack 

 of the Schizophyllum bracket fungus. From these limbs it spread to healthy 

 parts. While trees sprayed with lime sulphur suffered little from Scab or Spot 

 fungus, some varieties were hard hit, viz., Takake, Bedford and Martha. On 

 July 21st a brown spot was causing damage to apple leaves, spreading as a 

 circular or irregular area from a brown or sometimes black centre. Later the 

 spots dropped out. 



In the European barberry and holly barberry or Oregon Grape the cluster 

 cups of the Black Rust of grain were plentiful. Yellow cluster cups of the Brown 

 Rust of oats were too common on the European buckthorn. 



The bean (Phaseohis vulgaris L.) crop was very severely damaged by Bac- 

 terial Bean Blight, the Anthracnose or "Bean Rust" also caused damage to some 

 varieties of beans, others in adjacent rows being clean. This points straight as an 

 arrow to the fact that seed from infected beans carries over the disease from year 

 to year. 



Very little damage to the garden beet was caused by Leaf Blight, the white 

 spots were rarely observed. In storage the roots showed some damage due to a 

 Sclerotinia. The celery beds were quite free from Blight, a remarkable circum- 

 stance in such weather as we had. 



