Zebra Chip (ZC) was confirmed in the Columbia Basin potato production area of Oregon and Washington in 2011. This is a serious disease first documented in Saltillo, Mexico in 1994. In 2000 the disease was identified in South Texas and since then, ZC has been reported in Arizona, California, Colorado,...
Beet leafhoppers were collected weekly on
yellow sticky traps placed at 36 locations in Morrow and
Umatilla Counties in northeastern Oregon in April through
November 2007, 2008, and 2009. Insects were counted,
collected, and a subset of the insects was tested for the
presence of the beet leafhopper-transmitted virescence
agent...
Published January 1967. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The potato tuberworm, Phthorimaea operculella
(Zeller) (PTW), is one of the most important limitations to
potato, Solanum tuberosum L., productivity worldwide.
Leaves, stems, petioles and more importantly, potato tubers,
in the field and storage can be seriously affected. Due to the
relatively recent arrival of the PTWin the United States...
Virus contamination in a potato breeding program can seriously
disrupt the variety development process. Experiments were conducted
from 1989 through 1993 to: evaluate the extent to which Potato
Leafroll Virus (PLRV) and Potato Virus Y (PVY) can invade a breeding
program, determine viral spread within hills and within individual
tubers,...