Efficacy of Commercial Insecticides against Tomato Leaf Miner Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Palpa, Nepal

A survey and field experiment were conducted to evaluate the efficacy of commercial insecticides against tomato leaf miner [Tuta absoluta (Meyrick)(Lepidoptera: Gelechiidae)] under farmer’s field condition in Palpa, Nepal from February 2018 to April 2018. It consists of seven treatments replicated three times. The treatments included: Abamectin 0.15% EC (dose: 0.3ml/liter), Imidachloprid 17.8% SL (dose: 0.3ml/liter), Spinosad 45% SC (0.3ml/liter), Azadirachtin 300 ppm (5ml/liter), Chlorantraniliprole 18.5% SC (0.3ml/liter), Emamectin benzoate 5% SC (2gm/liter) and control. Treatments were applied two times at 12 days interval. From the farmer survey, Tuta absoluta was identified as the major production problem of the study area. The field experiment revealed that there was a significant effect of insecticides in larval mortality and damage reduction. The lowest percentage of leaves damage was obtained in spinosad followed by chlorantraniliprole and emamectin benzoate and the lowest fruits damage was obtained in chlorantraniliprole followed by spinosad and emamectin benzoate. Similarly, the lowest larval population in both leaves and fruits was observed in chlorantraniliprole followed by spinosad and emamectin benzoate. Average mining in infested leaves and fruits was found non-significant at all days of observation. The rate of larval population reduction over control was found highest in chlorantraniliprole followed by spinosad and emamectin benzoate. Thus, chlorantraniliprole, spinosad and emamectin benzoate were superior insecticides for management of Tuta absoluta in the field condition.

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Eefficiency of Certain Insecticides Alone or in Mixtures Against the Tomato Leaf miner, Tuta absoluta (Meyrick) Under Field Condition, Assiut Governorate, Egypt

Assiut Journal of Agricultural Sciences ◽

10.21608/ajas.1999.16271 ◽

2018 ◽

Vol 49 (3) ◽

pp. 47-54

Author(s):

R. Ali ◽

O. Zedan

Keyword(s):

Field Condition ◽

Tomato Leaf ◽

Tuta Absoluta ◽

Leaf Miner ◽

Tomato Leaf Miner

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

Egyptian Journal of Biological Pest Control ◽

10.1186/s41938-019-0184-y ◽

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.

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

Egyptian Journal of Biological Pest Control ◽

10.1186/s41938-020-00346-6 ◽

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.

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Attraction of female tomato leaf miner, Tuta absoluta (Meyrick, 1917) (Lepidoptera:Gelechiidae) to shared compounds from hosts

Phytoparasitica ◽

10.1007/s12600-020-00848-x ◽

2020 ◽

Author(s):

Davis Msisi ◽

Nicodemus D. Matojo ◽

Fikira Kimbokota

Keyword(s):

Tomato Leaf ◽

Tuta Absoluta ◽

Leaf Miner ◽

Tomato Leaf Miner

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Spatial distribution pattern of South American tomato leaf miner, Tuta absoluta (meyrick) on open field tomato in Andhra Pradesh

Journal of Entomological Research ◽

10.5958/0974-4576.2021.00082.7 ◽

2021 ◽

Vol 45 (3) ◽

pp. 537-540

Author(s):

P. Venkataramanaiah ◽

S.R. Koteswara Rao ◽

K.V. Hari Prasad ◽

M. Reddi Sekhar

Keyword(s):

Spatial Distribution ◽

Distribution Pattern ◽

Open Field ◽

Andhra Pradesh ◽

Tomato Leaf ◽

Spatial Distribution Pattern ◽

Tuta Absoluta ◽

Leaf Miner ◽

South American ◽

Tomato Leaf Miner

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

International Journal of Engineering Technologies and Management Research ◽

10.29121/ijetmr.v6.i8.2019.444 ◽

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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