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 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 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
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