scholarly journals Occurrence of the South American Tomato Leaf Miner, Tuta absoluta (Meyrick) in Southern Shan, Myanmar

Insects ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 962
Author(s):  
Sopana Yule ◽  
Ni Ni Htain ◽  
Aung Kyaw Oo ◽  
Paola Sotelo-Cardona ◽  
Ramasamy Srinivasan
Keyword(s):  
Management Practices ◽  
Tomato Leaf ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Invasive Pest ◽  
Economic Damage ◽  
South American ◽  
The South ◽  
Tomato Production ◽  
Tomato Leaf Miner

The South American tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), one of the most important invasive insect pests affecting tomato production worldwide, was for the first time detected in Myanmar. Preliminary surveys on pest occurrence on tomato crops in Myanmar suggested the presence of T. absoluta in Southern Shan State, but there was no official survey conducted until the end of 2019. Therefore, this study aimed to confirm the presence of T. absoluta in Myanmar. The presence of T. absoluta was specifically observed in the Southern Shan State, which is the largest tomato production area in Myanmar, where tomato is grown under two cultivation methods, floating and land cultivation. The highest T. absoluta infestation was recordedat Kalaw with (82%), followed by Inle Lake (i.e., floating cultivation) (20%) and Pin Ta Ya (10%). The amount of T. absoluta larvae was significantly higher in the lower third of the plants, followed by the middle section and upper section, respectively, in three fields surveyed. Potential and severe economic damage may be expected if management practices are not in place to reduce the presence of this invasive pest. It is of immediate importance that plant protection and quarantine offices of ASEAN member states coordinate their response to T. absoluta and build their capacity to monitor the pest and develop a strategy for when it arrives. In addition, a suitable management strategy is needed to reduce the occurrence of this invasive pest.

scholarly journals Pathogenicity of some commercial formulations of entomopathogenic fungi on the tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)

2019 ◽  
Vol 29 (1) ◽  
Author(s):  
Assinapol Ndereyimana ◽  
Samuel Nyalala ◽  
Patrick Murerwa ◽  
Svetlana Gaidashova
Keyword(s):  
Entomopathogenic Fungi ◽  
Larval Mortality ◽  
Mortality Rates ◽  
Negative Control ◽  
Tomato Leaf ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Tomato Production ◽  
Tomato Field ◽  
Tomato Leaf Miner

AbstractThe tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is a major threat to tomato production in Rwanda. Laboratory bioassays were conducted to evaluate some commercial entomopathogenic fungi (EPF) formulations on T. absoluta larvae. The larvae, inside the leaf galleries, were obtained from the established tomato field. Commercial EPF: Metatech® WP [Metarhizium anisopliae (Metschn.) Sorok, Strain FCM Ar 23B3], Beauvitech® WP [Beauveria bassiana (Bals.) Vuill., Strain J25], and Botanigard ES [B. bassiana (Bals.), Strain GHA] were tested in Petri dishes against T. absoluta larvae at a concentration of 108 spores/ml. A synthetic insecticide, imidacloprid was included for comparison as a positive control, while water was used as a negative control. All the tested commercial EPF formulations were pathogenic to T. absoluta larvae in all conducted bioassays. Mortality rates increased with an increase in time (days). However, the insignificant difference was observed in the mortality of T. absoluta larvae treated with the commercial EPF during the first 3 days in all bioassays. Highly significant differences (p < 0.01) in pathogenicity among treatments were observed from the 4th to 6th days after inoculation. Metatech® WP and Beauvitech® WP recorded the highest mortality rates (82.8 and 60.8%) with the LT50 values of 3.9 and 5.2 days, respectively, while imidacloprid caused the least larval mortality. Since the EPF demonstrated high virulence level against the target pest, the efficacy of Metatech® WP and Beauvitech® WP should be advanced to field evaluation to determine their potential as alternatives to the synthetic insecticides.

scholarly journals First Report of Invasive South American Tomato Leaf Miner Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Tajikistan

2018 ◽  
Vol 101 (1) ◽  
pp. 147-149 ◽  
Author(s):  
Nurali Saidov ◽  
Ramasamy Srinivasan ◽  
Ravza Mavlyanova ◽  
Zulfiqor Qurbonov
Keyword(s):  
Tomato Leaf ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
South American ◽  
First Report ◽  
Tomato Leaf Miner

scholarly journals Evaluation of Bio-Pesticides against the South American Tomato Leaf Miner, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) in India

Horticulturae ◽  
2021 ◽  
Vol 7 (9) ◽  
pp. 325
Author(s):  
Priyakshi Buragohain ◽  
Dilip Kumar Saikia ◽  
Paola Sotelo-Cardona ◽  
Ramasamy Srinivasan
Keyword(s):  
Bacillus Thuringiensis ◽  
Andhra Pradesh ◽  
Tomato Leaf ◽  
Field Conditions ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
South American ◽  
High Susceptibility ◽  
Tomato Leaf Miner ◽  
Synthetic Pesticides

Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most economically important pests of tomato worldwide. Despite its global importance, the management of this oligophagous pest has still been a challenging task, due to its high capability to develop resistance against synthetic insecticides. Given the limited studies on the effectiveness of different bio-pesticides in India, the objective of this research was to determine the pathogenicity of different commercial formulations of Beauveria bassiana, Bacillus thuringiensis, and neem (Azadirachtin), against T. absoluta, under laboratory and field conditions. For the Bacillus thuringiensis formulations, Green Larvicide® and Delfin® recorded an LC50 of 4.10 × 10⁹ CFU/mL and 8.06 × 106 spores/mg, respectively, while for the B. bassiana formulations, Green Beauveria® and BB Power® were 4.473 × 107 spores/mL and 1.367 × 107 CFU/g, respectively. Furthermore, the results showed high susceptibility to both the commercial neem formulations with Ecotin®, recording an LC50 of 91.866 ppm, and Econeem Plus® recording 212.676 ppm. The results from the field conditions at different locations of Andhra Pradesh, India, showed significant differences (p < 0.001) for leaf and fruit infestation among the interaction effect of treatments and locations. Bio-pesticides, especially neem and B. thuringiensis formulations, reduced T. absoluta infestation similarly to the chemical treatment, without affecting the yield. Therefore, bio-pesticides can be considered as safe alternatives to synthetic pesticides, for the management of T. absoluta.

scholarly journals A Newly Emerged Pest of Tomato [Tomato Leaf Miner, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae)]: In Bangladesh – A Review on Its Problems and Management Strategies

2020 ◽  
pp. 1-16
Author(s):  
Md. Nurul Huda ◽  
Tanzim Jahan ◽  
Hasan Fuad El Taj ◽  
Khalid A. Asiry
Keyword(s):  
Agricultural Research ◽  
Action Plan ◽  
Management Strategies ◽  
Tomato Leaf ◽  
Control Measures ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Research Centre ◽  
Tomato Production ◽  
Tomato Leaf Miner

Worldwide, tomato leaf miner Tuta absoluta (Lepidoptera: Gelechiidae) is one of the most devastating invasive pests of tomato crops. It is one of the most important biotic constraints for tomato production which may lead to the production loss up to 100% if it cannot be controlled. T. absoluta comprises four developmental stages: egg, larvae, pupa, and adult with a rapid growth rate. Among these larvae is the most devastating stage which affects the fruit, leaves, and stem. Recently, T. absoluta is turned into a key pest of tomato in Bangladesh. This pest was first detected by IPM lab, Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh from a commercial tomato grower in the village of Chaklarhat (26019’N, 88043’E) under the Tunirhat union of Panchagarh Sadar Upazila, Panchagarh district of Bangladesh in May 2016. Since its introduction in 2016, there was no sound action plan implemented. Therefore, this paper focused on relevant scientific knowledge regarding its biology, potential damage and different control measures which will open the windows for future researches for efficient and sustainable management strategies against T. absoluta in Bangladesh.

scholarly journals Tomato Leaf miner (Tuta absoluta) (Meyrick 1917) (Lepidoptera: Gelechiidae) prevalence and farmer management practices in Kirinyanga County, Kenya

2018 ◽  
Vol 10 (6) ◽  
pp. 43-49 ◽  
Author(s):  
Wangari Peris Nderitu ◽  
Jamleck Muturi John ◽  
Mark Otieno ◽  
Esther Arunga ◽  
Jonsson Mattias
Keyword(s):  
Management Practices ◽  
Tomato Leaf ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Tomato Leaf Miner ◽  
Farmer Management
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