An important discovery to apple growers
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Summary of Bulletin number 35. "The Wooly-Aphis or Apple-Root Plant-Louse is believed to be doing more damage to the apple orchards of South Missouri than all other insect pests and diseases combined. ... The Missouri Experiment Station has made a large number of experiments. ... The results of these studies is published in Bulletin No. 35"
Provided for historical documentation only. Check Missouri Extension and Agricultural Experiment Station sites for current information.