. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE In Cooperation with Ih&Bureaa of Plan! Industry Pennsylvania Department of Agricnlture DEPARTMENT BDILETIN No. 1357 Wasbingtoii, D. C. T Janoary, 1926 THE STRAWBERRY ROOTWORM A NEW PEST ON GREENHOUSE ROSES By C. A. WEIGEL, Associate Entomologbt Fnnl Insect Investigations Bnrean of Entomology CONTENTS Sytleraatie History 2 Economic History aad Food Plants ................•.•••• 3 Recent Injury in Greenboose* ..••••••...... 4 Distribation 6 Nature of Injury and Economic Importa
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE In Cooperation with Ih&Bureaa of Plan! Industry Pennsylvania Department of Agricnlture DEPARTMENT BDILETIN No. 1357 Wasbingtoii, D. C. T Janoary, 1926 THE STRAWBERRY ROOTWORM A NEW PEST ON GREENHOUSE ROSES By C. A. WEIGEL, Associate Entomologbt Fnnl Insect Investigations Bnrean of Entomology CONTENTS Sytleraatie History 2 Economic History aad Food Plants ................•.•••• 3 Recent Injury in Greenboose* ..••••••...... 4 Distribation 6 Nature of Injury and Economic Importance 6 Life History and Habits • 8 Seasonal History 25 Natural Enemies .......••• 27 Experiments in Control •.......• 27 PreTcntiTe Measures ...............«....•..••.•« 45 Summary 45 Recommendations for Cinlrel ........................ 48 Literature Cited 47 WASHINGTON GOVERNMENT PRINTING OFFICE 1926. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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