The Importance and Management Option of Onion thrips, Thrips tabaci (L.) (Thysanoptera: Thripidae) in Ethiopia: A Review

Shiberu, Tadele; Mahammed, Amin

doi:10.4172/2376-0354.1000107

Cited by 14 publications

(12 citation statements)

References 22 publications

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“…When the thrips population had reached ETL i.e. 30 thrips/plant (BURIRO et al 2006, SHIBERU 2014, BESSIN 2017, ALSTON & DROST 2008, the insecticide treatments were applied with the help of a knapsack sprayer after calibration. It took about 100 days for the pest to reach ETL after nursery transplantation to the main field.…”

Section: Data Collection and Analysismentioning

confidence: 99%

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

Asghar¹,

Baig²,

Afzal³

et al. 2018

Polish Journal of Entomology

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The efficacy of five insecticides containing a.i. bifenthrin, dimethoate, spinosad, spinetoram and chlorfenapyr was evaluated following RCBD against Thrips tabaci in farmer’s field for two consecutive years. The data were recorded before and after 24 h, 48 h, 72 h and 7 days of spraying. The results showed that all the insecticides reduced thrips populations compared to controls. However, the maximum reduction in thrips population and highest onion bulb yield (34.07 t/ha) was obtained with dimethoate 40EC followed by bifenthrin 10EC (33.14 t/ha). The minimum onion bulb yield (25.71 t/ha) was obtained in the control, where no insecticide was applied against thrips. If onion thrips are not controlled, the damage they cause can reduce bulb yields by 9-25%. The highest incremental return over the control (Rs.83, 600/ha), net income (Rs.82, 913/ha) and maximum cost benefit ratio were also obtained in the treatment with dimethoate 40EC.

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Section: Data Collection and Analysismentioning

confidence: 99%

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

Asghar¹,

Baig²,

Afzal³

et al. 2018

Polish Journal of Entomology

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“…The adopted colonization thresholds are different. For example, the following threshold levels were suggested: in California -30 thrips per plant (Edelson et al 1989), in New York state -3 per leaf (Nault & Shelton 2012), in Ethiopia -5-10 per plant (Shiberu & Mahammed 2014), and in Honduras -0.5-1.6 per leaf in the dry season (Rueda et al 2007).…”

Section: Action Thresholdmentioning

confidence: 99%

The Major Biological Approaches in the Integrated Pest Management of Onion Thrips, Thrips Tabaci (Thysanoptera: Thripidae)

Woldemelak

2020

Journal of Horticultural Research

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Thrips tabaci Lindeman is a cosmopolitan and polyphagous insect pest. It is known worldwide and recorded on more than 300 plant species. T. tabaci is a key pest of onion and several other crops, and its control is vital to the production and profitability of crops. If onion thrips population is not controlled, damage can reduce yield volume and quality. In addition to direct damage to the host plants, T. tabaci has been characterized as an asymptomatic vector of three devastating tospovirus species, such as Tomato spotted wilt virus, Iris yellow spot virus, and Tomato yellow ring virus. For this reason, several synthetic insecticides were used for control. However, these insecticides bring unwanted effects, like pesticide resistance, elimination of nontarget species, environmental pollution, and threats to human health. To solve the negative consequences of insecticides, biopesticides, such as plant secondary metabolites, entomopathogenic viruses, bacteria, fungi, and nematodes, have been recognized as effective alternatives. The use of plant-based insecticides and entomopathogenic control methods gained more attention in integrated pest management. Their strong side is lack of residues, saving beneficial insects and minimizing air and water pollution. Plant-derived compounds and entomopathogenic biological control agents offered a variety of biological modes of actions against onion thrips, such as repellency, feeding deterrence, anti-oviposition, fecundity deterrence, metamorphosis inhibition, and parasiting the host’s body.

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“…Onion yield is known to be influenced by a variety of factors such as cultural practices, growing environment, insect pests, and diseases [5]. Poor transportation, a large number of middlemen, inadequate storage facilities, and a lack of farmer's organizations are some of the issues that prevent efficient onion marketing in the research area [6].…”

Section: Introductionmentioning

confidence: 99%

Prospects and Constraints of Onion Production and Marketing: A Case Study of District Tando Allahyar, Sindh-Pakistan

Khan

Malik

Hameed

et al. 2022

PPASB

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This study aimed to identify the existing onion production practices and constraints at smallholder farms and profitability of onion in the Tando Allahyar district of Sindh during the year 2018-19. The primary data were collected from 24 randomly chosen onion-producing farmers in village Ibrahim Shah using a pre-tested systematic questionnaire. Descriptive statistics were used to evaluate percentages, frequency, and mean, while the benefit-cost analysis (BCA) method was used to determine onion growers' profitability. Results of the study revealed that the overall average total cost and gross revenue of onion production were (Rs. 115120/acre, Rs. 154875/acre) respectively. The benefit-cost ratio was found to be 1.52 for (variable costs) and 1.35 for (total cost), indicating that onion cultivation benefits farmers in the Tando Allahyar district. The most common and local onion variety grown was Nasarpuri, which was cultivated by 87 % of farmers, along with Hazari and Phulkara. However, the farmers were reluctant to use hybrid seeds due to their inability to withstand high temperatures. The main production constraints for onion growers were high input prices, particularly seed costs, and high labour charges for hoeing and weeding. Similarly, low product prices and high transportation costs were major marketing constraints. Due to a lack of technical expertise with current technology, such as a shortage of cold storage and skilled labor, the marketing of excess produce throughout the year was a significant problem for onion growers. It is therefore suggested that a comprehensive marketing capacity building and Global GAP will improve the quality, productivity and profitability of the farmers and open the channel of export for Pakistan.

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The Importance and Management Option of Onion thrips, Thrips tabaci (L.) (Thysanoptera: Thripidae) in Ethiopia: A Review

Cited by 14 publications

References 22 publications

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

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

The Major Biological Approaches in the Integrated Pest Management of Onion Thrips, Thrips Tabaci (Thysanoptera: Thripidae)

Prospects and Constraints of Onion Production and Marketing: A Case Study of District Tando Allahyar, Sindh-Pakistan

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