scholarly journals Tuta absoluta; A Devastating Pest of Tomato: A Review

2021 ◽  
Vol 8 (5) ◽  
pp. 193-197
Author(s):  
Abichal Poudel ◽  
Karuna Kafle
Keyword(s):  
Disease Incidence ◽  
Tomato Leaf ◽  
Leaf Miner ◽  
Effective Control ◽  
Larval Feeding ◽  
Mass Trapping ◽  
Vegetable Crop ◽  
Tomato Production ◽  
Tomato Leaf Miner ◽  
The World

Tomato (Solanum lycopersicum L.) is a very important vegetable crop of the world. However, there is a huge loss in tomato production due to pest and disease incidence. Tomato leaf miner is a devastating pest of tomato and other Solanaceous crops in many vegetable crop growing areas around the world and it also attacks non-solanaceous crops. The larva is the most devastating stage of tomato leaf miner. After egg hatching, the larvae feed on tomato fruits, leaves, flower buds, and young shoots and create mines and galleries. Larval feeding may reduce tomato production by 80-100 % in an open field as well as in a plastic house if no control measures are carried out. Chemical control has been found ineffective due to a wide host range and has developed resistance to dozens of pesticides. Hence, Integrated Pest Management (IPM) practices involving mass trapping of the pest using pheromone trap, biological control by a predator, parasitoid, entomopathogenic microbes, including cultural practices should be implemented for the effective control of this pest.

scholarly journals Effectiveness of Various Solar Light Traps With and Without Sex Pheromone for Mass Trapping of Tomato Leaf Miner (Tuta absoluta) in a Tomato Field

2018 ◽  
Vol 10 (4) ◽  
pp. 475-484
Author(s):  
Hossein PEZHMAN ◽  
Karim SAEIDI
Keyword(s):  
Sex Pheromone ◽  
Block Design ◽  
Light Trap ◽  
Tomato Leaf ◽  
Solar Light ◽  
Leaf Miner ◽  
Mass Trapping ◽  
Light Traps ◽  
Tomato Field ◽  
Tomato Leaf Miner

Tuta absolute was a quarantine pest in Iran that has been recorded for the first time in 2009. The most conventional methods for control of this pest in Iran are chemical methods and mass trapping, although the efficiency of the latter method is not clear. In 2013, the efficiency of three common types of solar light traps with and without sex pheromone, along with water pan pheromone traps for control, were investigated. The experiment was performed in a randomized complete block design within in a tomato field. The treatments were Behroyan light trap (BL), Zist bani light trap (ZL), Russell light trap (RL), BL + pheromone, ZL+ pheromone, RL+ pheromone and water pan pheromone trap (WPT). Traps were checked weekly and the number of captured tomato leaf miner (TLM), Noctuid moths, Chrysopa sp., Coccinella septempuctata and Syrphid flies were counted. Mean weekly capture of TLM in BL, ZL and RL traps without sex pheromone were 9.11 ± 1.16, 4.94 ± 0.24 and 1.66 ± 0.7, while within traps sex pheromone were 54.72 ± 11.8, 42.05 ± 6.47, 39.02 ± 2.82, respectively. The mean weekly capture of Noctuid moths in the traps without pheromone were 16.92 ± 1.39, 25.39 ± 0.57, 1.49 ± 0.27 and with pheromone were 21.04 ± 1.72, 28.09 ± 0.95, 2.76 ± 1.39, respectively. Mean weekly capture of TLM and Noctuid moths in WPT traps were 47.13 ± 3.06 and 0.73 ± 0.27, respectively. The total attracted numbers of predators by the three light traps were not significant. In conclusion, traps baited sex pheromone (especially BL and ZL) could be used as eco- friendly tools for mass trapping of TLM and some key Noctuid moth pests in isolated tomato fields.

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 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 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 Effects of some bioinsecticides on the tomato leaf miner, Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae)

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Alime Bayindir Erol ◽  
Oktay Erdoğan ◽  
İsmail Karaca
Keyword(s):  
Mortality Rate ◽  
Active Ingredient ◽  
Metarhizium Anisopliae ◽  
Mortality Rates ◽  
Tomato Leaf ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Verticillium Lecanii ◽  
Main Body ◽  
Tomato Leaf Miner

Abstract Background In this study, commercial bioinsecticides including entomopathogenic fungi, Beauveria bassiana, Metarhizium anisopliae, and Verticillium lecanii, and Spinetoram active ingredient insecticide were evaluated against the tomato leaf miner, Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) larvae. Main body The active ingredients were prepared at the recommended concentrations under laboratory conditions and applied to the 2nd instar larvae of T. absoluta by spraying with a hand sprayer. On the 1st, 3rd, 5th, and 7th days of the application, evaluations were made by counting survived individuals. The findings showed that the highest mortality rates were detected in the case of Spinetoram with 56, 60, 88, and 100% on all counting days of the experiments, respectively. The highest mortality rate among bioinsecticides was recorded for M. anisopliae, with 87% mortality on the 7th day of application. Short conclusion As a result, Spinetoram was found the most effective insecticide when applied to T. absoluta, followed by M. anisopliae.

scholarly journals TOMATO LEAF MINER, TUTA ABSOLUTA (LEP., GELECHIIDAE), POPULATION FLUCTUATION AND SEASONAL ACTIVITY IN THE FIELD

2020 ◽  
Vol 6 (8) ◽  
pp. 88-98
Author(s):  
Shahriar Asgari ◽  
Yaghoub Fathipour
Keyword(s):  
Larval Density ◽  
Pheromone Trap ◽  
Tomato Leaf ◽  
Tuta Absoluta ◽  
Population Fluctuation ◽  
Leaf Miner ◽  
Seasonal Activity ◽  
Tomato Field ◽  
Tomato Leaf Miner ◽  
Tehran Province

Seasonal activity and population fluctuation of tomato leaf miner, Tuta absoluta (Meyrick), a dangerous pest of tomato fields in Tehran province, were determined in Varamin region, south of Tehran province in 2015-2016. Number of moths in pheromone trap and number of larvae per plant were counted weekly in a trail tomato field. The trap capture began on mid-April in warm dry spring of 2015 and on mid-May in cool wet spring of 2016. The first and highest moth peaks in trap occurred about one month earlier in 2015 than 2016. The larval density per plant at the highest peak reached 2.34 and 10.8 in 2015 and 2016, respectively. A temperature range of 25-30°C was desirable to the pest in which the interval of successive peaks decreased. In both years, the pest created three generations over a growing season, according to larval peaks, but 11 over a year, according to trap data, that the 11th generation overwintered. The temperature of 35°C and above limited larval activity and decreased the population. After the crop removed, the pest population declined due to host shortage, but it increased with the access of hosts in the second cultivation since mid-September until the cold season.

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