Evaluation of different insecticides for the management of onion thrips (Thrips tabaci Lindeman, 1889) (Thysanoptera, Thripidae) on onion (Allium cepa L.) crops

Asghar, Muhammad; Baig, Mirza Muhammad Qadeer; Afzal, Muhammad; Faisal, Naeem

doi:10.2478/pjen-2018-0012

Cited by 6 publications

(7 citation statements)

References 11 publications

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“…The combined application of biocontrol agents and chemical insecticides proved better in terms of reduction in pest populations compared with single‐treatment applications. Our findings reveal that dual treatment of B. bassiana plus spinetoram was the best combination in controlling thrips populations as 30–40 thrips/plant is economic threshold level (ETL) for thrips 79,80 . Mixed application of H. bacteriophora + spinetoram and B. bassiana + H. bacteriophora exhibited better control of thrips than single treatments.…”

Section: Discussionmentioning

confidence: 77%

Efficacy of entomopathogenic fungi, nematodes and spinetoram combinations for integrated management ofThrips tabaci

Wakil

Gulzar

Prager

et al. 2023

Pest Management Science

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BACKGROUND: Two consecutive field trials using a blend of entomopathogens in combination with a new chemistry insecticide were conducted to determine treatment effects on onion thrips (Thrips tabaci Lindeman) populations, crop damage, plant development, crop yield and impact on natural enemies. Products were tested in an onion cropping system and included the insect pathogenic fungus Beauveria bassiana (isolate WG-11), an entomopathogenic nematode Heterorhabditis bacteriophora (strain VS) and the new-chemistry chemical insecticide spinetoram.RESULTS: In all treatments, a significant decrease in thrips per plant population was detected in both trials. Overall, dual application of entomopathogens and insecticide was more effective than singly applied treatments. The lowest number of thrips larvae (1.96 and 3.85) and adults (0.00 and 0.00) were recorded when treated with dual application of B. bassiana and spinetoram at 7 days post application (DPA) after the second spray application in 2017and 2018, respectively. Damage on onion plants was considerably decreased in all treatments relative to the control. The lowest damage was observed on onion plants treated with B. bassiana + spinetoram at 7 DPA after the second spray application during both years. A significant decrease in the number of natural enemies (beetles, spiders, mites, lacewings, ants and bugs) on onion plants was recorded during both years. Insect pathogens when applied alone and in combination with each other considerably protected arthropod natural enemies compared to insecticide application applied alone. Significant increase in plant agronomic traits was observed compared to the control. Among all the treatments, B. bassiana + spinetoram produced maximum leaf length, leaf weight, total leaves, neck diameter, bulb diameter, number of rings per bulb, bulb weight, dry matter and plant yield following the 2017and 2018 applications, respectively. CONCLUSION: The findings of the study reveal the potential of using insect pathogens and insecticide for control of T. tabaci. However, combinations containing spinetoram are harmful to nontarget organisms, whereas biological control agents help in protecting biodiversity in onion agroecosystems.

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Section: Discussionmentioning

confidence: 77%

Efficacy of entomopathogenic fungi, nematodes and spinetoram combinations for integrated management ofThrips tabaci

Wakil

Gulzar

Prager

et al. 2023

Pest Management Science

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“…Many of the insecticides used for vegetable cultivation in Nigeria have a contact mode of action and are lethal to specific insects once absorbed via contact; for example, dimethoate, carbaryl, cypermethrin, deltamethrin, and lambda cyhalothrin. Other insecticides applied to protect vegetables have systemic action and are soluble in water, resulting in being absorbed and circulated in plant tissues where they can be picked up by insects [ 8 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. Example of systemic pesticides used in Nigeria include neonicotinoids/nitroguanidine (imidacloprid) and dimethoate (locally systemic).…”

Section: Management Of Insect Pests Of Vegetable Cropsmentioning

confidence: 99%

A Review of Insect Pest Management in Vegetable Crop Production in Nigeria

Ofuya

Okunlola

Mbata

2023

Insects

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Insect pest infestations and damage can limit the production of vegetables in the farming systems in Nigeria. This review looks at integrated insect pest management as a possible panacea for resolving insect pest issues in vegetable crops. The main vegetable crops which include okra, tomatoes, chilli peppers, cucumbers, green amaranth, carrots and onions are highlighted. The major insect pests of the various vegetables which include foliage beetles, caterpillars, aphids, fruit flies, stink bugs, and grasshoppers are also mentioned. The various control measures that have been empirically verified for the mitigation of the impact of these insect pests, including the application of synthetic insecticides, modification of agronomic practices, use of resistant varieties, application of botanicals, biological and mechanical controls, are discussed. Studies which have been carried out attempting to integrate two or more of the control strategies for better insect pest control are also reviewed. Strategies that can be put in place for the integrated pest management of vegetable insect pests in Nigeria are considered. Among the IPM (Integrated Pest Management) practices instituted for the mitigation of pest infestations on vegetable crops in Nigeria, intercropping of suitable vegetables in combination with the application of aqueous extracts of Azadirachta indica and Piper guineense seeds under good farm hygiene and sanitation proved to be most successful.

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“…Iglesias et al(2021) concluded that biopesticides are an important component of an onion thrips management program. It has been also reported that carbosulfan, cypermethrin EC deltamethrin+ triazophos, bifenthrin, and dimethoate reduced the T. tabaci population for more than two weeks and the effect of imidacloprid was better than cyhalothrin(Ashghar et al, 2018). Effect of Varieties and Insecticides on Population and percentage mortality of onion thrips…”

mentioning

confidence: 93%

Integrated Management of Onion Thrips on Onion, Mecha District, Ethiopia

Mulu¹,

Jenber²,

Tesfaye³

et al. 2023

World J Environ Biosci

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Insect pests like thrips attack onion crops and cause a yield loss of 30%-90% in the Mecha district. Hence, field research was conducted in Mecha District, Ethiopia, under irrigation conditions in 2019/2020 to develop management options for onion thrips. The treatment combinations were: two onion varieties: Adama red and Bombay red; two botanicals, namely, Datura stramonium and Azadirachta indica leaf powder, and the two synthetic insecticides, dimethoate (40%) and karate (5%). The study was set up in a randomized full-block design and repeated three times. Data were recorded and an analysis of variance was performed 3 times. The highest mortality percentage (65%) with the lowest population of thrips per plant (1.66) was shown from the Adama red variety treated with Datura stramonium. The lowest mortality (24.43%) with a high population of thrips per plant (4.0) was shown on Bombay red treated with Karate 5% EC. Bombay treated with Karate 5% EC gave the highest mortality percentage (53.3%), plant height (13.2 cm), marketable yield in kg ha-1 (8600, and total yield ha-1 (9441), subsequently Adama red treated with Datura stramonium. Partial budget analysis revealed that the application of Karate 5% EC ha-1 on the Bombay red variety yielded the highest net benefit with the lowest production cost that can be recommended for the study area.

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Evaluation of different insecticides for the management of onion thrips (Thrips tabaci Lindeman, 1889) (Thysanoptera, Thripidae) on onion (Allium cepa L.) crops

Cited by 6 publications

References 11 publications

Efficacy of entomopathogenic fungi, nematodes and spinetoram combinations for integrated management ofThrips tabaci

Efficacy of entomopathogenic fungi, nematodes and spinetoram combinations for integrated management ofThrips tabaci

A Review of Insect Pest Management in Vegetable Crop Production in Nigeria

Integrated Management of Onion Thrips on Onion, Mecha District, Ethiopia

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