Apple rust . Sections of quadruple register record from midnight May 4th to 2 :45 A. 5th, 1914. A, indicates wind direction; B, wind velocity; C, sunshineline ; D, rainfall. York Imperial twigs sacked immediately after it stoppedraining on the morning of May 5th were just as badly diseasedwith rust as unprotected twigs on the same tree. Treessprayed about 11 A. M. that day showed just as much rustas unsprayed trees. The sporidia discharge had occurredbetween 12 and 2 :30 A. M. May 5th and the infection of applefoliage and fruit had evidently taken place at once. The windwhich carried the
Apple rust . Sections of quadruple register record from midnight May 4th to 2 :45 A. 5th, 1914. A, indicates wind direction; B, wind velocity; C, sunshineline ; D, rainfall. York Imperial twigs sacked immediately after it stoppedraining on the morning of May 5th were just as badly diseasedwith rust as unprotected twigs on the same tree. Treessprayed about 11 A. M. that day showed just as much rustas unsprayed trees. The sporidia discharge had occurredbetween 12 and 2 :30 A. M. May 5th and the infection of applefoliage and fruit had evidently taken place at once. The windwhich carried the sporidia was in a general southwest direc-tion, varying to south and with a velocity of about ten milesper hour. Infection was general and quite severe. There was no evidence of sporidia discharge during theforenoon of May 5th, although careful observations weremade by exposing large watch glasses near the cedar gallsfor from one to six hours. The sporidia, if discharged in anynumbers, would alight on the wa
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Keywords: ., bookcentury1900, bookdecade1910, bookidapplerust154, bookyear1915
