J. Upton

Publications10
h-index9
Citations578
Highly Influential Citations47
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Association ofBactericera cockerelli (Homoptera: Psyllidae) with “Zebra Chip,” a New Potato Disease in Southwestern United States and Mexico
TLDR
Experiments conducted to elucidate the association between the psyllidBactericera cockerelli (Sulc) (Homoptera: Psyllidae) and zebra chip by exposing clean potato plants to this insect under greenhouse and field conditions indicated that there was an association between.
Further Evidence that Zebra Chip Potato Disease in the Lower Rio Grande Valley of Texas is Associated with Bactericera cockerelli
TLDR
Control exposure and exclusion field experiments in the Lower Rio Grande Valley of Texas indicated that there was a strong association between the potato psyllid and ZC, and plants exposed to psyllids developed typical ZC symptoms in both raw tubers and fried chips.
Impact of Different Potato Psyllid Populations on Zebra Chip Disease Incidence, Severity, and Potato Yield
TLDR
Results indicated that ZC symptom severity in fried chips was correlated with ZC severity in raw tubers and with tuber weight, and the impact of potato psyllid on potato yield and processing quality was highly significant.
Incidence of the Beet Leafhopper-Transmitted Virescence Agent Phytoplasma in local Populations of the Beet Leafhopper, Circulifer tenellus, in Washington State
TLDR
It was determined that the beet leafhopper-transmitted virescence agent (BLTVA) phytoplasma was the causal agent of the disease in the area and that this pathogen was transmitted by the beet Leafhopper, Circulifer tenellus Baker (Hemiptera: Cicadellidae).
Beet Leafhopper (Hemiptera: Cicadellidae) Settling Behavior, Survival, and Reproduction on Selected Host Plants
TLDR
Be beet leafhopper oviposition and nymphal production and development only occurred on sugar beet, radish, and potato; reproduction was lower on potato.
Beet Leafhopper (Hemiptera: Cicadellidae) Transmits the Columbia Basin Potato Purple Top Phytoplasma to Potatoes, Beets, and Weeds
TLDR
Results of the current study prove that the beet leafhopper is a vector of the potato purple top disease.
Seasonal Occurrence and Abundance of Beet Leafhopper in the Potato Growing Region of Washington and Oregon Columbia Basin and Yakima Valley
TLDR
The beet leafhopper appeared into potato fields as early as April, but generally arrived in early May, and was present in potatoes throughout the remainder of thegrowing season, suggesting that potatoes more likely are infected with the purple top disease phytoplasma during early summer; however, it is not clear how far into the growing season potato infection occurs.
Beet leafhopper (Hemiptera: Cicadellidae) settling behavior, survival, and reproduction on selected host plants.
TLDR
Be beet leafhopper oviposition and nymphal production and development only occurred on sugar beet, radish, and potato; reproduction was lower on potato.
Beet leafhopper (Hemiptera: Cicadellidae) transmits the Columbia Basin potato purple top phytoplasma to potatoes, beets, and weeds.
TLDR
Results of the current study prove that the beet leafhopper is a vector of the potato purple top disease.
Unleashing the Predictive Power of the Integrated Master Schedule: The Planning and Scheduling Excellence Guide (PASEG)
Abstract : We are gravely underutilizing one of the most powerful predictive weapons in our program management arsenal. The integrated master schedule (IMS) could become the most comprehensive,…