Abiotic and Biotic Factors Affecting the Occurrence of Thrips on Lotus Flowers

Bumroongsook, S.

doi:10.15666/aeer/1603_28272836

Cited by 3 publications

(3 citation statements)

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“…Frankliniella schultzei has been found to be associated with flowers of ornamental plants in Florida (Funderburk et al 2007). In Thailand, F. schultzei is a severe pest of the lotus flower (Muangnimitr & Bumroongsook 2007;Bumroongsook 2018). In Florida, the lotus is used as an ornamental, and is produced as a nursery crop on a small scale (Worden & Sutton 2005;Tian 2008); this may provide a reservoir of pests outside of normal horticultural management oversight.…”

Section: Introductionmentioning

confidence: 99%

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Toxicity for Control of Frankliniella schultzei and Selenothrips rubrocinctus (Thysanoptera: Thripidae) of Several Common Synthetic Insecticides

Kilaso

2022

Florida Entomologist

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Thrips are serious pests of several kinds of crop plants throughout the world. Their attack leads to loss in plant production. Common blossom thrips, Frankliniella schultzei (Trybom), and red-banded thrips, Selenothrips rubrocinctus (Giard) (both Thysanoptera: Thripidae), are serious insect pests attacking various plants, such as tomato (Solanum esculentum Miller [Solanaceae]), mango (Mangifera indica Linnaeus [Anacardiaceae]), avocado (Persea americana Miller [Lauraceae]), and lotus flower (Nelumbo nucifera Gaertn. [Nelumbonaceae]). Currently, basic thrips control relies on synthetic insecticides. However, the toxicity of each existing insecticide for control of some specific pest species still has not been well established. This study evaluated and reported the toxicity of 6 insecticides (chlorantraniliprole, cypermethrin, carbosulfan, fipronil, abamectin, and spinetoram) for control of the 2 thrips species mentioned above. The evaluation was done by exposing 10 thrips to a bean dipped in insecticide, and mortality was recorded after 24 h of exposure under laboratory conditions. Spinetoram was the most toxic to F. schultzei with an estimated LC 50 of 0.05 ng per µL. For red-banded thrips, S. rubrocinctus, the most toxic insecticides were abamectin, spinetoram, and fipronil, with LC 50 values of 1.67, 1.85, and 4.23 ng per µL, respectively. On the other hand, the least toxic insecticide to common blossom thrips and red-banded thrips was chlorantraniliprole, with LC 50 values of 270.51 and 641.08 ng per µL, respectively. Overall, among the tested chemicals, spinetoram was the most effective in controlling these pests. The findings from this study will benefit developers of insecticide management strategies in thrips control programs.

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Section: Introductionmentioning

confidence: 99%

“…Apart from the tree crops, ornamental plants can be damaged by this species (Walter et al 2018). Selenothrips rubrocinctus can infest ornamental plants, especially lotus, where they aggregate on the underside, sucking the leaf tissue, and leading to lower lotus production efficiency (Milne et al 2002;Bumroongsook 2018).…”

Section: Introductionmentioning

confidence: 99%

Toxicity for Control of Frankliniella schultzei and Selenothrips rubrocinctus (Thysanoptera: Thripidae) of Several Common Synthetic Insecticides

Kilaso

2022

Florida Entomologist

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“…Thrips are a major problem for lotus flowers before and after harvest. Frankliniella schultzei (Trybom) are found throughout the year and predominantly attack lotus flowers (Bumroongsook, 2018). Therefore, postharvest control is an important process to export cut lotus flower.…”

Section: Introductionmentioning

confidence: 99%

Modified Atmosphere for Thrip Disinsection on Cut Lotus Flowers

Bumroongsook¹,

Kilaso²

2018

Appl. Ecol. Env. Res.

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In Thailand, lotus flowers are one of exportable products for flower trade industry. Common blossom thrip (Frankliniella schultzei) contamination on cut lotus flowers after harvest has been a major problem for export. F. schultzei is a quarantine insect pest. Modified atmospheres (MA) without oxygen content are considered an alternative to methyl bromide fumigation to control thrips. MA treatment has been used to control insect pests in agricultural product commodities. Different combinations of carbon dioxide, nitrogen, ozone levels, and treatment times were used to effect mortality of the common blossom thrips and postharvest quality of cut lotus flowers. Exposure to different concentrations of O 3 fumigation for 2 days could kill almost all F. schultzei (100% of larvae and ≥ 96% of adults). However, a concentration of 50-250 ppm of O 3 could not control F. schultzei on lotus flowers completely. O 3 fumigation caused color change in lotus flowers. High concentrations of O 3 (≥ 150 ppm) had a negative effect on the visual quality of lotus flowers. The results revealed that thrips mortality increased with increased CO 2 level and storage time. 100% CO 2 caused 100% mortality of both adults and larvae of F. schultzei when there was a 6-h exposure. MA were more effective in disinfecting of thrips on cut lotus flowers after 9 h fumigation to ≥ 50% CO 2 caused complete mortality to F. schultzei. There was not much difference in lotus color in response to atmosphere modified by a combination of CO 2 and N 2 . Therefore, CO 2 disinfestation treatment has the potential to be developed commercially as an alternative postharvest control for common blossom thrips on lotus flowers.

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