Timing of halo spotting by flower thrips on table grapes
Hilgardia 27(10):6-8. DOI:10.3733/ca.v027n10p6. October 1973.
Flower thrips oviposit in newly developing grape berries and produce a halo spot. The halo spot consists of a small dark scar surrounded by whitish tissue. If too numerous, these halo spots either reduce the grade of table grapes or result in their being culled. Fortunately only a few varieties such as Almeria, Calmeria and Italia are ordinarily affected. The greatest damage potential occurs with Italia since the skin may split at the site of a halo spot during ripening and lead to bunch rot.
Also in this issue:Opening new channels of communication
Protein electrophoresis AIDS cereal variety identification
Flower thrips nymphs involved in scarring of Thompson seedless grapes
Natural decline of a pine needle scale population at South Lake Tahoe
Magnifico … a promising new globe artichoke variety
The biology of San Jose scale on peaches with special reference to the behavior of males and juveniles