scholarly journals Circular yellow sticky trap with black background enhances attraction of Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)

2010 ◽  
Vol 45 (1) ◽  
pp. 207-213 ◽  
Author(s):  
Bishwo Prasad Mainali ◽  
Un Taek Lim
Plant Disease ◽  
2016 ◽  
Vol 100 (8) ◽  
pp. 1762-1767 ◽  
Author(s):  
F. Workneh ◽  
L. Paetzold ◽  
A. Rashed ◽  
C. M. Rush

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.


1986 ◽  
Vol 76 (2) ◽  
pp. 265-274 ◽  
Author(s):  
M. J. Samways

AbstractParasitoids of Aonidiella aurantii (Maskell) on citrus in South Africa were monitored using two types of yellow sticky trap. One of these traps was highly efficient, being fluorescent with peak reflectance at about 530 nm. Aphytis spp. populations were low before February and high thereafter. Citrus surrounded by natural bush was an isolated reservoir of high host and parasitoid population levels. Aphytis spatial distribution within the orchard was extremely patchy, with over 100-fold differences in population levels over a distance of a few metres. This patchiness mirrored that of its host. This contagious spatial pattern was maintained despite 1000-fold seasonal changes in population levels. These temporal changes were characteristic and general throughout an orchard, and independent of patchiness. Initial Aphytis population levels did not dictate the final population level at the end of the season. Comperiella bifasciata Howard and its hyperparasitoid Marietta javensis (Howard) also showed clear seasonal population trends, but not of the same magnitude as those of Aphytis. There was no statistically significant correlation between the spatial distribution of one parasitoid with that of another, even between C. bifasciata and M. javensis. The patchiness of these two species was not correlated with overall host density. Aphytis and C. bifasciata were partially mutually exclusive. Aphytis was by far the most economically important of the parasitoids. Pest management practices, therefore, should aim at conserving the pool of Aphytis within the orchard as far as practicable.


Redia ◽  
2020 ◽  
Vol 103 ◽  
pp. 9-13
Author(s):  
AUGUSTO LONI ◽  
MARCO FORNACIARI ◽  
ELISABETTA ROSSI

A female ofStrebloceramacroscapus(Ruthe)(Hymenoptera Braconidae Euphorinae) was captured on a yellow sticky trap during a monitoring survey aimed atstudyinginsectbiodiversityinViareggio district (Lucca, Italy). This is the first report ofthis species inItaly.Biological information onS. macroscapusand itsparticular ecological niche are reviewed,and images of the specimenare presented. The importance of urban gardens and their proximity to the surrounding wild areas is also considered.


2016 ◽  
Vol 9 (1) ◽  
pp. 19
Author(s):  
Affandi Affandi ◽  
D. Emilda ◽  
M. Jawal A.S

Scars on mangosteen fruits caused by thrips are the most prominent constraint in Indonesian export of mangosteen. Most of the exported mangosteen are rejected due to scar appearance. This research aimed to study the effects of fruit bagging, sanitation, and sticky trap application on the scar intensity on mangosteen. The research was conducted at a farmer's polycultured mangosteen orchard in Lima Puluh Kota, West Sumatra, Indonesia from September 2006 to February 2007. The mangosteen trees were cultured with cacao and coconut. To study the effects of bagging on the number of scars, the fruits were individually bagged at different time points starting from the time of calyx falling down (0) followed at 2, 4, 6, 8, 10, 12, and 14 weeks later. Each treatment was replicated six times. The experiment of sanitation (SNT) and yellow fluorescent sticky trap (YST) application was designed in a completely randomized design with six replications, except for the control which was replicated only three times. Four treatments studied were SNT, YST, combination of SNT+YST, and control. The sanitation was applied by removing all weeds under the canopy of mangosteen trees followed with soil tillage and fogging. The sticky trap was nailed on woody sticks and placed on 3 m above the ground at four different positions around the tree canopy. Parameters observed were the percentage and intensity<br />of scars and number of thrips caught on the sticky traps. The results showed that application of early bagging, SNT, YST, and SNT+YST were effective to reduce intensity and percentage of scars. However, combination of SNT+YST demonstrated the best results in reducing the intensity and percentage of scars by 32.14% and 42.82%, respectively. Combination of SNT+YST also drastically decreased thrips population as indicated by the<br />low number of thrips catched after five biweekly observations. Since the fifth observation, the thrips population was low (less than 5 thrips catched per sticky trap) and far below the economic threshold. The present study implies the importance of early fruit bagging, sanitation, and sticky trap application in protecting mangosteen fruits from scars.


2020 ◽  
Vol 3 (2) ◽  
pp. 89-104
Author(s):  
Parlindungan Tarihoran ◽  
Ameilia Zuliyanti Siregar ◽  
Marheni

This research aimed to know the diversity of insects of sorghum plantations and the status of insect functions in sorghum plants. The purposive sampling method were done, which used 4 traps, consist of yellow sticky trap, sweep net, pitfall trap and light trap for 8 observations research were done from May to September 2019 at Kolam Village, Percut Sei Tuan District of Deli Serdang Regency, then continue to identified in Pest Laboratory Faculty of Agriculture University of Sumatera Utara, Medan. The results showed that there were 117 individuals insects which consist of 10 orders and 33 families. The highest relative density was 14.74% and the lowest was 0.42% sere recorded, while the highest relative frequency was 4.08% and the lowest was 1.53%. The value of insect diversity index was 3.115 (High), it is mean the diversities of insects varied and the habitat was good for growth of insects. The value of evenness index was 0.891 (high) and richness index was 4.15 (high). The dominant insects recorded from Order of Hymenoptera (Family of Formicidae), continued to Coleoptera (Family of Scarabaeidae; Coccinellidae) are quite diverse in the sorghum plantations. The function status of insects was recorded as herbivores, parasitoids, predators, pollinators and decomposer were determined.


1998 ◽  
Vol 23 (1) ◽  
pp. 49-50
Author(s):  
J. A. Collins ◽  
F. A. Drummond

Abstract Test materials were applied to plots in bearing blueberry fields at Deblois (Tests 1 and 2) and Township 19 (Tests 3 and 4), Maine. Timing for each application is given in the table. Treatment plot size measured 100 X 300-ft for Test 1, 150 X 300-ft for Test 2, and 200 X 300-ft for Tests 3 and 4. An untreated area adjacent to each plot or set of treated plots was designated as a control. The first application was made when yellow sticky trap captures indicated that BM populations had exceeded threshold levels as defined by current management practices (6 flies at any one visit or 10+ flies over 2 or more visits). Materials were applied using a Cessna Ag Wagon® equipped with 30 CP nozzles on 2½-inch drop tubes and calibrated with a #7 Crop Hawk® Flow Meter to deliver 5 (Sniper) or 6 (Imidan) pints of water-mixture per acre. Ground speed =120 mph; 2500 RPM; pressure at boom = 40 psi; height = 5-8 ft; 50 ft swath. On 4 Aug (Tests 3 and 4) and 8 Aug (Tests 1 and 2), one quart of berries was raked from each of 10 or 15 preselected subsites within each treated and untreated check plot and at least 25 ft from plot boundaries. Berries were refrigerated and processed for maggots within 2 weeks of collection. Weather during the trial was very dry. Only 1.57 inches of rain was recorded between 1 Jul and 8 Aug.


2020 ◽  
Vol 11 (1S) ◽  
Author(s):  
Salmah Mohamed ◽  
Siti Nur Shafiqa Abdullah ◽  
Nur Syafiqah Musa ◽  
Norhayati Ngah

A study was conducted to attract insects using different colours of sticky trap in pumpkin (Cucurbita moschata) field. Sticky trap was chosen as it is one of a method to estimate the insect population density in field as it requires a low cost and less skilled labour. Four different colours of sticky traps (i.e. red, white, blue and yellow) were used to determine the insect population abundance at the pumpkin field. All the traps were installed at the height of 100 cm at a random of 1 ha of pumpkin plot with five replicates for each colour and the insect samples were collected weekly for three months (October-December 2019). Overall, a total of 13,052 insects were collected throughout 11 weeks of sampling. The results showed that the percentage of insect population abundance recorded the highest was on week eight (15.01%) whilst the least abundance of insects trapped was on week one (2.28%). The most attractive colour to attract insects was significantly the yellow colour (44.34%) followed by blue (20.12%) and white (19.15%) whilst the lowest insect trapped was on red colour (16.40%). A total of nine insect orders recorded were; Diptera, Hemiptera, Coleoptera, Hymenoptera, Lepidoptera, Orthoptera, Blattodea, Isoptera and others. Diptera was the most abundant of insect’s order trapped in the yellow trap with 3427 individuals and followed by Hemiptera order (1022 individuals). Whilst the Isoptera order was the least number of insects caught on a red colour trap with only one individual. In conclusion, our findings showed that the yellow sticky trap colour is the most attractive to attract insects of C. moschata compared to other colours. Therefore, this study could provide essential knowledge that may be useful for the future ecological survey of insects of C. moschata.


Sign in / Sign up

Export Citation Format

Share Document