scholarly journals Sticky Traps as Monitoring Tools for the Flight Activity and Population Density of Onion Thrips (Thysanoptera: Thripidae) in Assiut Governorate

2016 ◽  
Vol 7 (10) ◽  
pp. 629-632
Author(s):  
A. Abd El-Raheem
Keyword(s):  
Population Density ◽  
Flight Activity ◽  
Onion Thrips ◽  
Sticky Traps ◽  
Monitoring Tools

scholarly journals Population Dynamics of Released Potato Psyllids and their Bacteriliferous Status in Relation to Zebra Chip Incidence in Caged Field Plots

Plant Disease ◽  
2016 ◽  
Vol 100 (8) ◽  
pp. 1762-1767 ◽  
Author(s):  
F. Workneh ◽  
L. Paetzold ◽  
A. Rashed ◽  
C. M. Rush
Keyword(s):  
Disease Incidence ◽  
Sticky Trap ◽  
Research Station ◽  
Zebra Chip ◽  
Sticky Traps ◽  
Monitoring Tools ◽  
Candidatus Liberibacter ◽  
Yellow Sticky Trap ◽  
Successive Generations ◽  
Field Plots

Potato psyllids vector ‘Candidatus Liberibacter solanacearum’ (Lso), the putative causal agent of potato zebra chip (ZC). Currently, sticky traps are the primary psyllid monitoring tools used by growers for making management decisions. However, the reliability of sticky traps in predicting psyllid numbers in potato fields has always been questioned. In 2013 and 2014, experiments were conducted in covered field plots at the Texas A&M AgriLife Research Station at Bushland to investigate the relationships among initial psyllid numbers, psyllids captured on sticky traps and their Lso status, and zebra chip incidence. Three densities of Lso-positive psyllids (5, 15, or 30/cage) were released under 2-week-old potato canopies with four replications in plot sizes of 7.6 to 9 m by 5 rows. Psyllids were released under the first plant in the center row and monitored weekly with a yellow sticky trap from the opposite end. Number of plants with zebra chip symptoms also was counted weekly beginning one month after infestation with psyllids. The total number of psyllids captured on sticky traps and disease incidence levels generally corresponded to the levels of psyllid density treatments (5 < 15 < 30), but the differences became more apparent toward the end of the experiments. Psyllid numbers in the different density treatments fluctuated more or less in synchrony over time, which appeared to reflect periodic emergence of new generations of psyllids. Initially, all captured psyllids tested positive for Lso. However, the proportions of psyllids testing positive declined dramatically after a few weeks, which suggested that the new generations of psyllids were devoid of Lso. Over all, less than 50% of captured psyllids tested positive for the pathogen. The decline in proportions of psyllids testing positive for Lso following successive generations has significant relevance to field situations and may partly explain why there are generally low percentages of Lso-positive psyllids under field conditions.

scholarly journals Seasonal Phenology, Management, and Host Preferences of Potato Leafhopper on Nursery-Grown Maples

1993 ◽  
Vol 11 (3) ◽  
pp. 101-106
Author(s):  
Daniel A. Potter ◽  
Patricia G. Spicer
Keyword(s):  
Population Density ◽  
Acer Rubrum ◽  
Synthetic Pyrethroid ◽  
Potato Leafhopper ◽  
Empoasca Fabae ◽  
Red Maple ◽  
Sticky Traps ◽  
Host Preferences ◽  
Foliar Sprays ◽  
And Control

Abstract Seasonal phenology and control of the potato leafhopper (Empoasca fabae (Harris)) on red maples (Acer rubrum L.) were studied for three years in nurseries in central Kentucky. Migratory adult leafhoppers were first captured on yellow sticky traps in early May. Peak population density ranged from late May to late June. The second flush of leaves was most heavily damaged in each year. Foliar sprays of cyfluthrin (Tempo 2), a synthetic pyrethroid, beginning 1 to 2 weeks after first capture of leathoppers and repeated at biweekly intervals during May and June, greatly reduced symptoms of injury. Acephate (Orthene) was less effective than cyfluthrin, whereas treatment of the soil with disulfoton (Di-syston) was ineffective. Oviposition and development of the leafhopper on red maple were confirmed. Field evaluations of selected cultivars showed that red maples were more severely damaged than sugar (A. saccharum L.) or Norway (A. platanoides L.) maples. ‘Autumn Blaze’, an A. rubrum × saccharinum hybrid, was relatively resistant.

scholarly journals Investigations of Thrips tabaci and Aeolothrips intermedius population dynamics in tobacco plantations

2018 ◽  
pp. 121-127
Author(s):  
Szilvia Orosz ◽  
László Bujdos ◽  
Lajos Varga ◽  
Tibor Fekete
Keyword(s):  
Population Dynamics ◽  
Primary Objective ◽  
Thrips Tabaci ◽  
Onion Thrips ◽  
Sticky Traps ◽  
Chemical Treatments ◽  
Proper Timing ◽  
Yellow Sticky Traps

Studies were conducted between 2015 and 2017 with yellow sticky traps in seven tobacco plantations. The purpose was to determine when and in what numbers onion thrips individuals can settle into tobacco plantations. The primary objective of the study was to determine the proper timing of chemical treatments, furthermore, the determination of crucial factors that can influence the population dynamics of Thrips tabaci.

Captures of Male European Pine Sawflies (Hymenoptera: Diprionidae) in Pheromone-Baited Traps in Kentucky

2001 ◽  
Vol 36 (1) ◽  
pp. 67-73 ◽  
Author(s):  
L. K. Rieske ◽  
L. Townsend ◽  
O. Anderbrant ◽  
Erik Hedenström ◽  
Hans-Erik Högberg
Keyword(s):  
Time Of Day ◽  
Flight Activity ◽  
Neodiprion Sertifer ◽  
Peak Activity ◽  
Trap Catch ◽  
Sticky Traps ◽  
Pine Sawfly ◽  
Pine Sawflies ◽  
Baited Traps ◽  
European Pine Sawfly

Using sticky traps baited with (2S, 3S, 7S)-3,7-dimethyl-2-pentadecyl acetate, we assessed the seasonal and diurnal flight activity of the European pine sawfly, Neodiprion sertifer (Geoffrey), in Fayette, Madison, and Livingston counties in Kentucky. At each site, two replicates of individual sticky traps were baited and suspended about 1 m high and spaced at least 20 m apart. Trap catch was affected by site (P = 0.001). A total of 326 European pine sawfly males were captured at the Fayette Co. site during the period 18 September to 12 November, representing 7% of the season total. No males of this species were caught at the other sites. During peak flight activity (1 to 15 October), we monitored traps at 2.5-h intervals over 4 d to determine diurnal flight patterns. Flight activity began after 1100 h and ceased by 1830 h, and was significantly affected by time of day. European pine sawfly flight activity was greatest between 1330 and 1830 h. We captured over 5,200 male sawflies at all three sites, with peak activity occurring in May, July, September and October.

DENSIDAD POBLACIONAL DE MOSCABLANCA Bemisia spp. (HEMIPTERA: ALEYROIDIDAE) EN EL VALLE DE GUAYMAS-EMPALME, SONORA, MÉXICO/ POPULATION DENSITY OF WHITEFLY IN THE GUAYMAS-EMPALME VALLEY, SONORA, MEXICO

Biotecnia ◽  
2016 ◽  
Vol 18 (3) ◽  
pp. 9-13
Author(s):  
Juan José Pacheco-Covarrubias ◽  
Joel Soto Nolasco ◽  
Juan Manuel Valenzuela Valenzuela
Keyword(s):  
Population Density ◽  
Population Growth ◽  
Bemisia Tabaci ◽  
The Other ◽  
Sticky Traps ◽  
Influence Of Temperature ◽  
Heat Units ◽  
Pest Infestation ◽  
Important Pest ◽  
Number Of Individuals

La mosca blanca (Bemisia tabaci) es la plaga más importante en el valle de Guaymas-Empalme, Sonora. Se determinó su densidad poblacional mediante la captura regional de adultos a través de trampas amarillas pegajosas. Los resultados indican valores de pendiente de 0.011, 0.014, 0.0045 y 0.0027 para los ciclos 2011-12, 2012-13, 2013-14 y 2014-15, respectivamente; dichos valores son diferentes estadísticamente entre sí (0.01) prueba de “t”. Por otra parte, el número promedio de individuos capturados por semana para los ciclos antes mencionados fue de 0.67, 0.80, 0.31 y 0.14, respectivamente. Finalmente, el cálculo del número de generaciones que en teoría se pueden acumular mediante Unidades Calor fue de 13.5, 9.36, 15.32, 11.96, para los ciclos antes mencionados. Los resultados no detectan evidencia determinante de la influencia de la temperatura ni del alimento sobre el crecimiento poblacional de la plaga, por lo que el manejo de focos de infestación de la plaga y el ordenamiento de fechas de cultivos son determinante para la definición del estatus fitosanitario de la plaga. ABSTRACT Whitefly is the most important pest in the Guaymas-Empalme valley, Sonora. México. The population density of whitefly was evaluated trough regional capture of whitefly adults through yellow sticky traps. The data indicate slope values of 0.011, 0.014, 0.0045 and 0.0027 for 2011-12 , 2012-13, 2013-14 and 2014-15 cycles, respectively; these values are statistically different from each other (0.01) test “t”. Moreover, the average number of individuals caught weekly was 0.67, 0.80, 0.31 and 0.14. Finally, the number of generations which in theory can be accumulated by heat units was 13.5, 9.36, 15.32, 11.96. The results did not detect evidence of the influence of temperature and crops on the population growth of the pest; on the other hand the management of outbreaks of pest infestation and crop dates control are crucial for defining the pest status.

Observations on the flight periods of aphids in a Sitka spruce plantation in north-eastern Scotland

1973 ◽  
Vol 62 (3) ◽  
pp. 391-399 ◽  
Author(s):  
W. H. Parry
Keyword(s):  
Wind Speed ◽  
Sitka Spruce ◽  
Common Species ◽  
Flight Activity ◽  
Aphis Fabae ◽  
Aphid Population ◽  
Sticky Traps ◽  
Mild Winter ◽  
North Eastern ◽  
Elatobium Abietinum

Flight activity of aphids during 1969–71 in a Sitka spruce plantation in north-eastern Scotland was recorded by means of sticky traps. Two flight periods occurred, June–August and September–October. Fewer aphids were caught at 120 and 180 cm than at 60 cm above ground during June–August, while fewer were caught at 60 cm in September–October. After accounting for differences in wind speed at these heights, it was shown that aerial density was consistently higher at 60 cm. The first flight which comprised mostly Elatobium abietinum (Wlk.) was three weeks early in 1971; this was associated with the rapid increase in aphid population on spruce shoots, due to the preceding mild winter. Reinfestation by this species after spraying could follow under similar circumstances. Adelges laricis Vail. and A. viridis (Ratz.) sexuparae were caught in the first flight, and A. cooleyi (Gill.) gallicolae in the second; all galls on Sitka were by gallicolae of A. cooleyi. Aphis fabae Scop, was the most common species in the second flight.

PHENOLOGY OF FLEA BEETLE (COLEOPTERA: CHRYSOMELIDAE) FLIGHT IN RELATION TO THEIR INVASION OF CANOLA FIELDS IN MANITOBA

1983 ◽  
Vol 115 (11) ◽  
pp. 1493-1502 ◽  
Author(s):  
R. J. Lamb
Keyword(s):  
Flea Beetle ◽  
Ground Level ◽  
Flight Activity ◽  
Daily Maximum ◽  
Flight Period ◽  
Average Wind Speed ◽  
Sticky Traps ◽  
Flea Beetles ◽  
Suction Trap ◽  
Maximum Temperatures

AbstractA suction trap operating 1.4 m above ground and sticky traps arranged from ground level to 7 m were used to collect flea beetles during 1979–1982. The suction trap showed a peak in flight activity for Phyllotreta striolata (F.) in late April and May, but caught few beetles later in the season. The same trap showed that Phyllotreta cruciferae (Goeze) commenced flying a few days later than P. striolata, but continued to fly through the summer. The highest catch of P. cruciferae occurred in late August and early September. Prior to early June more flea beetles were caught on sticky traps at 1 and 2 m than on traps at ground level or 0.5 m. Subsequently more were caught at the two lower elevations. Beetles were captured on sticky traps up to the highest trapping height of 7 m throughout the growing season. These data suggest that the average flight elevation and level of flight activity are highest until the beginning of June for both species and then drop, and that P. cruciferae usually flies more actively and at higher elevations than P. striolata.Overwintered P. cruciferae flew only when daily maximum temperatures exceeded 14 °C. The new generation of adults was captured flying in August and September when daily maximum temperatures were as low as 4.7 °C. Throughout the season, the catch in a suction trap was negatively correlated with average wind speed.Given the extended flight period of P. cruciferae, late seeding of canola would not prevent invasion of the crop by this pest. Day to day variation in beetle catches by sticky traps or a suction trap, and trap to trap variation for sticky traps was high. Therefore, such traps would not provide sufficiently precise estimates of flea beetle densities prior to seeding to permit farmers to determine whether a field requires a seed treatment.

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