New pest of ladino clover seed: Cultural practices believed best control of clover case bearer now established in certain counties
AuthorsRay F. Smith
Authors AffiliationsRay F. Smith is Assistant Professor of Entomology, University of California, Berkeley; Lloyd Andres is Research Assistant in Entomology and Parasitology, University of California, Berkeley.
Hilgardia 8(8):7-10. DOI:10.3733/ca.v008n08p7. August 1954.
The clover case bearer–Coleophora spissicornis Haworth–mainly associated with white clover–Trifolium repens–but also reported to attack red clover–T. pratense and T. arvense– seems to be established as a pest of Ladino clover seed in the Sacramento Valley.
Also in this issue:Nitrogen on California cotton: Proper fertilization contributes to good return per dollar invested in San Joaquin Valley farms
Design of livestock shades: Construction and location of shades contribute to animal comfort and maintenance of feed intake
Use of moles for subirrigation: Sutter Basin beans adequately irrigated by improved procedures in ditching and use of artificial moles
Wind machine tests in citrus: Frost protection studies in 1954 confirmed earlier findings next to be investigated in deciduous trees
Valencia fruit sizes increased: Calcium acid phosphate found effective in outdoor cultures of pure silica sand and nutrient solution
Codling moth at linden in 1953: Uccessful control sprays applied in experimental orchard in season of serious infestation at Linden
Biological control of fig scale: From 67% to 100% of scale on twigs sampled in 1954 at colonization sites was found to be parasitized
Temperature and lettuce losses: Variables of time and temperature as they affect deterioration of harvested lettuce investigated
Ornamental flowering plants naturally infected with curly-top and aster-yellows viruses
Weed host range and overwintering of curly-top virus