In Cooperation with the Bureau of Plant Industry 
Pennsylvania Department of Agriculture 
| UNITED STATES DEPARTMENT OF AGRICULTURE |} 
_ DEPARTMENT BULLETIN No. 1357 
Washington, D. C. | Vv } January, 1926 
: THE STRAWBERRY ROOTWORM 
|. A NEW PEST ON GREENHOUSE ROSES 
By 
C. A. WEIGEL, Associate Entomologist 
Fruit Insect Investigations 
2 Bureau of Entomology 
| CONTENTS 
Page 
f Systemmtic History’ c! o,iec elie: is XS ver eo leo en ee 6:0 Pel te EO i ae eeioite na 
Economic History and Food Plants .....2.c2e2ccccccecsescssecse 3 
\ Recent Injury in Greenhouses , ...2cccccccccevscvcccecsce 4 
PVIStRIDItesOMR ys cicero eo cea iciti UM le te) w taerloiel aver aiiei os oe elena teqens 6 
Nature of Injury and Economic Importance. . 2. .2.2eesccesceccscce 6 
Esfe History and Dabitsrcc . eos <6. Geile b)o a6. eee ee bc eels ee 8 
Seasonal tlstory > oo ota s Ve rolle o, wi ew ae -bei'e: wie) .e le eis, w bl eievecete 25 
h Natural Eneniies e096 a) eos: ele ce Shariel ee be wlaile % hela) gieey Len 
Experiments CONEON? alice s\ 6. oo 1s. oo alae eal eles. vw bias te 27 
Preventive (Measures: oc. 5 1c; 6c «ieee so wie ele Sicha 66 ee lbiagta elie 45 
, PUNO W eee earl cuit dunia alae tal eel Guatiolie. ele tk heue ele siecee 45 
Recommendations for Control . 2... 0 oo « Wein phe el wre tiie eens ate 46 
BireraturmCMeds ce cha olaleeiatore es a ie boela te ate eats LONGER 47 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1926 
