| a decision-support tool to predict spray deposition of insecticides in commercial potato fields and its implications for their performance. | approximately us $1.3 billion is spent each year on insecticide applications in major row crops. despite this significant economic importance, there are currently no widely established decision-support tools available to assess suitability of spray application conditions or of the predicted quality or performance of a given commercial insecticide applications. we conducted a field study, involving 14 commercial spray applications with either fixed wing airplane (n=8) or ground rig (n=6), and we ... | 2011 | 21882675 |
| sex attraction in bactericera cockerelli (hemiptera: triozidae). | the potato psyllid, bactericera (=paratrioza) cockerelli (šulc) (hemiptera: triozidae), is a major pest of potato. we examined the role of chemical signals in sex attraction, assessing male and female response to male- and female-produced volatile chemicals. in laboratory olfactometer assays, potato psyllid males were attracted to odorants emitted from live females and from solvent extract of females. these results indicate that the female-produced chemicals responsible for attracting males may ... | 2010 | 22127181 |
| ovipositional preferences, damage thresholds, and detection of the tomato-potato psyllid bactericera cockerelli (homoptera: psyllidae) on selected tomato accessions. | the tomato-potato psyllid bactericera [paratrioza] cockerelli (sulc) has recently caused losses exceeding 50% on fresh market tomatoes in california and baja, mexico by injecting a toxin that results in a condition known as 'psyllid yellows'. the objectives of this study were to: (i) document oviposition preferences on a range of tomato cultivars; (ii) determine threshold levels for psyllid densities that would cause psyllid yellows on tomatoes within the first three weeks following transplantin ... | 2006 | 16556341 |
| tomato psyllid behavioral responses to tomato plant lines and interactions of plant lines with insecticides. | adult tomato psyllid, bactericerca (paratrioza) cockerelli (sulc) (homoptera: psyllidae), behavioral responses were evaluated for five tomato plant lines and for the interactions of insecticides with four commercial cultivars. plant lines tested included the commercial 'shady lady', 'yellow pear', '7718 vfn', 'qualit 21', and the plant introduction line pi 134417. insecticides included a kaolin particle film, pymetrozine, pyriproxyfen, spinosad, and imidacloprid. psyllids spent significantly mor ... | 2004 | 15279294 |