. Pig. 88. Distribution of Phyllosticta leaf spot of the catalpa in the U- S. as reported to the Plant Disease Survey Leaf spot caused by Phyllosticta catalpae E. c- M. York - not important ilaririg present year. Ohio - a moderate '..'as general in distribution, causing defoliation first reported appearance July 18, greatest aoount of injury occurred during July v/hen tiie host v/as in full leaf, v/eather favor- able to thjB disease. Control measures siiggested by Dr. Preda Detmers, Ohio A,:ricultural Lxperi rent Station as follows: ''Tirst, the sanitary one of buriiing fallen i
. Pig. 88. Distribution of Phyllosticta leaf spot of the catalpa in the U- S. as reported to the Plant Disease Survey Leaf spot caused by Phyllosticta catalpae E. c- M. York - not important ilaririg present year. Ohio - a moderate '..'as general in distribution, causing defoliation first reported appearance July 18, greatest aoount of injury occurred during July v/hen tiie host v/as in full leaf, v/eather favor- able to thjB disease. Control measures siiggested by Dr. Preda Detmers, Ohio A,:ricultural Lxperi rent Station as follows: ''Tirst, the sanitary one of buriiing fallen infected leaves and recond, spraying with Bordeaux mixture (A-0-5O
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1922
