Thrips tabaci Lindeman (Thysanoptera, Thripidae) in leek: symptoms, distribution and population estimates

  title={Thrips tabaci Lindeman (Thysanoptera, Thripidae) in leek: symptoms, distribution and population estimates},
  author={J. D. Theunissen and H. Legutowska},
  journal={Journal of Applied Entomology},
The onion thrips, Thrips tabaci Lindeman is a major pest of leek (Allium porrum L.) in Europe. To develop supervised control methods for pests and diseases in vegetable crops such as leek more information is needed on the within‐field distribution and population levels of pests. For the onion thrips various methods of assessing population levels in leek have been tested and compared during one cropping season. The distribution of larvae in the field is more clustered than that of the adults… 
Thrips tabaci Lindeman (Thysanoptera, Thripidae) in leek: within‐plant distribution
Both larvae and adults of the onion thrips (Thrips tabaci Lindeman) showed a preference for particular parts of leek (Allium porrum L.) plants, and larvae and adult thrips showed a normal distribution pattern preferring certain leaves.
Population dynamics and integrated pest management of Thrips tabaci on leek under field conditions in northwest Italy
Predatory thrips of the genus Aeolothrips (Thysanoptera: Thripidae), mostly Orius majusculus Reuter, were particularly abundant during 2007, supporting the importance of management with selective insecticides to encourage natural colonization by predators.
The studies on Population dynamic revealed that T. tabaci remained a regular pest on onion during the onion growing seasons and average air temperature have a positive correlation with thrips population.
The efficacy of intercropping with birdsfoot trefoil and summer savoury in reducing damage inflicted by onion thrips (Thrips tabaci, Thysanoptera, Thripidae) on four leek cultivars
It is concluded that this reduction of the leek yield when grown with birdsfoot trefoil and summer savoury intercrops is acceptable in light of the advantages of intercropping, especially when utilizing birdsfoot Trefoil.
Review of the biology and vector capability of Thrips tabaci Lindeman (Thysanoptera : Thripidae)
The available data referring to the occurrence and geographical distribution of the females and males, the host range, the virus vector capability and the monitoring of Thrips tabaci Lindeman, as
Pest and disease management by intercropping: suppression of thrips and rust in leek.
Undersowing leeks with clover drastically reduced thrips infestations which was reflected in improved quality of leeks at harvest, and the quality of the leek at harvest was also better.
Comparative life history studies of Frankliniella occidentalis and Thrips tabaci (Thysanoptera: Thripidae) on cucumber
A comparative life history study was carried out on cucumber, showing that the egg-to-egg period of F. occidentalis was shorter, but its peak ovipositional rate was lower and its offspring sex ratio more male biased, which resulted in a slightly lower intrinsic rate of population increase for F. Occidentalis.
Distribution and population dynamics of thrips tabaci (Thysanoptera: Thripidae) in selected districts of Khyber Pakhtunkhwa province Pakistan
It is concluded that thrips associated with onion crops were distributed from (March to May) though out in all districts of Khyber Pakhtunkhwa Province.


Economics of Controlling Onion Thrips (Thysanoptera: Thripidae) on Onions with Insecticides in South Texas
Results indicate that in years with favorable weather for onion production, a grower will increase profits by controlling thrips populations and that inYears with unfavorable weather conditions for production of onions, the lack of thrips management may result in net losses to agrower.
Distribution and impact of Thrips tabaci (Thysanoptera: Thripidae) on onion.
A significant negative linear relationship was found between seasonal mean abundance of thrips and onion yield and that populations became overdispersed as density increased above one thrips per plant.
Susceptibility of Onion Growth Stages to Onion Thrips (Thysanoptera: Thripidae) Damage and Mechanical Defoliation
Interactions between infestations of onion thrips, Thrips tabaci Lindeman, the three growth stages of onion (prebulbing, bulbing, and sizing), and onion yield were investigated in field and
Onion Thrips (Thrips tabaci Lind.) Infesting Cabbage
Infestations of thrips, principally Thrips tabaci Lind., but including small numbers of Frankliniella fusca (Hinds), F. tritici (Fitch), F. exigua Hood, and F. tenuicornis (Uzel) have seriously
Role of Nonpreference in the Resistance of Cabbage Varieties to the Onion Thrips (Thysanoptera: Thripidae)
For the frame (outer) leaves of the cabbage plant, ‘Falcon’ was generally preferred over the other varieties, although the numbers of thrips colonizing frame leaves of all varieties decreased to nearly zero late in the season, and no differences in preference among leaf disks from the heads of the four varieties were observed.
Influence of Variety on Abundance and Within-Plant Distribution of Onion Thrips (Thysanoptera: Thripidae) on Cabbage
Numbers of onion thrips, Thrips tabaci Lindeman, were significantly lower in August and early September in the heads of two resistant cabbage varieties than in two susceptible varieties (‘Market Prize’ and ‘Supergreen’).
Prevention of plant injury by cabbage gall midge (Contarinia nasturtii Kieffer) and onion thrips (Thrips tabaci Lindemann) using emulsions of polyisobutylene
Non ionogenic emulsions of the artificial rubber polymer polyisobutylene were effective for control of the cabbage gall midge, Contarinia nasturtii, on cauliflower and cabbages under both field and
Injury and control of onion thrips (Thysanoptera: Thripidae) on edible podded peas.
Harvests of edible podded peas from commercial fields in upstate New York during 1984 contained two types of injury previously unreported in the United States, which demonstrated that the scars were caused by onion thrips, Thrips tabaci Lindeman.
Effect of Planting Date and Timing of Growth Stages on Damage to Cabbage by Onion Thrips (Thysanoptera: Thripidae)
The same cabbage varieties remain resistant or susceptible to damage by the onion thrips, Thrips tabaci Lindeman, regardless of changes in planting date or synchronization of other growth stages, and delaying planting from 6 June or 18 June to 2 July significantly reduced damage ratings for susceptible varieties and depth of thrips damage.
Development and use of a dynamic sequential sampling program for onion thrips, Thrips tabaci (Thysanoptera: Thripidae), on onions.
Data collected in 1983 from six commercial onion fields in upstate New York indicate that dispersion characteristics of onion thrips (OT), Thrips tabaci Lindeman, are precisely described by Taylor’s