Development of biorational management for tomato leaf miner, Tuta absoluta

Abstract

to findan effective and suitable management approach against tomato leaf miner, Tuta absoluta. There was a total of ten treatments, viz., Treatment 1 = Application of Metarrhizium anisolpiae (Lycomax, Russel IPM) biopesticide in soil @ 5g/L of water, Treatment 2 = Foliar spray of azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water), Treatment 3 = Foliar spray of Bacillus thuringiensis (Biocure) @ 2g/L of water, Treatment 4 = Mass trapping through installation of delta sex pheromone trap, Treatment 5 = Spraying of spinosad (Tracer 45WSC) @ 0.5ml/L of water, Treatment 6 = Spraying with chlorantraniprole (Coragen 20SC) @ 0.5ml/L of water, Treatment 7 = Hand picking and destruction of infested leaf and fruit, Treatment 8 = Foliar spray of B. thuringiensis (Biocure) @ 2g/L of water + mass trapping through installation of delta sex pheromone trap + application of M. anisolpiae biopesticide in soil @ 5g/L of water, Treatment 9 = Foliar spray of azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water) + mass trapping through installation of delta sex pheromone trap + Application of M. anisopliae (Lycomax, Russel IPM) biopesticide in soil @ 5g/L of water and Treatment 10 = untreated control were evaluated against T. absoluta following RCB design with three replications. Results revealed that foliar spray of azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water) + mass trapping through installation of delta sex pheromone trap + application of M. anisopliae (Lycomax, Russel IPM) biopesticide in soil @ 5g/L of water performed best in reducing T. absoluta infestation, increase of marketable yield and highest marginal benefit cost ratio.

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

“…In line with this, novel bio-pesticides, such as Prev-Am ® , composed of orange oil, salt borax, and biodegradable surfactants, were also effective against T. absoluta, and were selective to its natural enemies, Nesidiocoris tenuis Reuter (Hemiptera: Miridae) in France [21]. Different studies also found that the use of entomopathogenic fungi, Metarhizium anisopliae and Beauveria bassiana, caused a 46-75% reduction in the T. absoluta population compared to the untreated plants, under semi-field conditions in Egypt [22,23]. Thus, bio-pesticides were shown to be effective in reducing T. absoluta in different geographical regions, with varying climatic conditions.…”

Efficacy of some Entomopathogenic Fungi Against Tomato Leaf Miner Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Iraq

“…Similarly, Metarhizium anisopliae var. anisopliae and B. bassiana have shown high mortality rates on T. absoluta eggs [20,21] .Another study was carried out by [22] conducted using that the B. bassiana, Verticillium lecanii and M. anisopliae against eggs-larvae T. absoluta tomato leafminer. They concluded that the fungi efficacy scored 48.3 ± 2.8%, 44.8 ± 4.8% and 41.3 ± 6.8% respectively against larva, while the selected bio-pesticides significantly reduced the T. absoluta egg counts compared to the untreated control.…”

Efficacy of Three Plant Oil Extracts and their Nano-Emulsions on the Leaf Miner, Tuta absoluta Larvae (Meyrick) (Lepidoptera: Gelechiidae)

“…(Biondi et al, 2018;Guedes and Picanço, 2012;Tropea Garzia et al, 2012). Bacillus thuringiensis and Azadirachta indica cause a high mortality rate in larvae of T. absoluta in both field and semi-field conditions (Hosseinzadeh et al, 2019;Hossain, et al, 2019;Abd El-Ghany et al, 2018) Due to the dangers of chemical pesticides to the environment and all living organisms, new pest control methods such as nano-emulsions have been recently used against insect pests (Palermo et al, 2021, Barik et al, 2008. Because nanoparticles have the ability to distribute on large surface areas, they can easily adsorb and bond with other compounds (Gonza'lez-Colomaa et al, 2005).…”