. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. February, 1922. SCIENTIFIC AGRICULTURE. 191 Plot 3, sprayed with 1-11/^-40 Burgundy on 3rd Sept. and with 3-4-40 Bordeaux on October 19th, after the fruit was picked, 4 trees shoAved 2 cankers or an average of Vo ^ canker per tree; 2 of these trees were absolutely clean. Cheek tree, 4 cankers. Plot 4, sprayed with 1-11/^-40 Burgundy on 3rd Sept. and with 6-6-40 Bordeaux on October 19th. The 3 trees examined were absolutely clean. It is interesting to note that these same 3 trees the previous year showed
. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. February, 1922. SCIENTIFIC AGRICULTURE. 191 Plot 3, sprayed with 1-11/^-40 Burgundy on 3rd Sept. and with 3-4-40 Bordeaux on October 19th, after the fruit was picked, 4 trees shoAved 2 cankers or an average of Vo ^ canker per tree; 2 of these trees were absolutely clean. Cheek tree, 4 cankers. Plot 4, sprayed with 1-11/^-40 Burgundy on 3rd Sept. and with 6-6-40 Bordeaux on October 19th. The 3 trees examined were absolutely clean. It is interesting to note that these same 3 trees the previous year showed an average of 32 cankers per tree. Cheek tree, 17 cankers. Plot 5, sprayed with 1-9 Lime-sulphur on October 19tvli, 4 trees showed 23 cankers or an average of 5% per tree. Check tree, 11 cankers. Method of Control. From the results of the experiments of the past years the following recommen- dations for the control of apple-tree An- thracnose are being made: During July and August an endeavor should be macle to go through the orchard and cut out all signs of dead wood. On early varieties such as Yellow Trans- parent, Duchess, Wealthy and Gravenstein, spray witli 3-4-40 Bordeaux as soon as the fruit is picked and before the Fall rains come. This spray is all that is necessai'y. On varieties such as King and Jonathan it is advised to spray the last week in Aug- ust wnth 1-11/2-40 Burgundy and to fol- low this with a 3-4-40 Bordeaux as soon as the fruit is picked. On late varieties such as Baldwin and Spy, which will not be harvested until the end of October and not marketed until January, it is advised to spray these the last week in August with a 3-4-40 Bor- deaux and this will be all that is ne- cessary. The use of Burgundy for varieties such as King and Jonathan is recommended due to the fact tliat this spray gives very ef- ficient results and leaves no deposit on the fruit which will be harvested probably in October. It is felt that this disease can be almost absolutely contr
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