New sugar beet pest: 100% control of sugar beet crown borer achieved in 1949 tests
W. Harry Lange, Experiment Station, Davis
California Agriculture 4(5):5-14. DOI: 10.3733/ca.v004n05p5.
Not available – first paragraph follows:
The sugar beet crown borer—Hulstia undulatella—a relatively unknown lepi-dopterous pest of sugar beets caused severe damage to seedling and half-grown sugar beets in Yolo, Yuba, and Solano counties during 1949. Although it probably causes some damage annually it apparently has not been reported in the scientific literature as a California pest since 1905 when damage was reported at Chino, Huntington Beach, Oxnard, Spreckels, and in the Santa Ana Valley.
W. Harry Lange, Jr., is Lecturer in Entomology and Assistant Entomologist in the Experiment Station, Davis.