EFFICIENCY OF SILICA NANOPARTICLES, TWO BIOINSECTICIDES, PEPPERMINT EXTRACT AND INSECTICIDE IN CONTROLLING COTTON LEAFWORM, Spodoptera littoralis BOISD. AND THEIR EFFECTS ON SOME ASSOCIATED NATURAL ENEMIES IN SUGAR BEET FIELDS

El-Samahy, M.; Khafagy, I. F.; Ghobary, Asmaa M. A. El

doi:10.21608/jppp.2015.74934

Cited by 13 publications

(9 citation statements)

References 11 publications

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“…This is in contrast to the field test of silica NPs on sugar beet infested by S. littoralis , the same pest as in this study, which does not increase the populations of predators such as Chrysoperla and Coccinella spp. 14 , suggesting that the attractive effect of silica NPs on predators depends on plant species. Our field experiments showed a short-term increase in predators on the soybean infested by a chewing insect but not on the faba bean infested by insects with other feeding types.…”

Section: Discussionmentioning

confidence: 99%

“…Mousa et al 13 ; Supplementary Table S1 ). The in-field effects of silica NPs have been evaluated for a limited number of insect pests and they are negative and dose-dependent; evaluated species include a chewing insect [moth: Spodoptera littoralis 14 ], a piercing-sucking insect [aphid: Aphis craccivora 15 ], and an internal feeder [leafmining fly: Liriomyza trifolii 15 ] (Supplementary Table S1 ).…”

Section: Introductionmentioning

confidence: 99%

“…The known effects of silica NPs are limited. However, their effects on the predators Coccinella spp., Chrysoperla carnea , and true spiders in the field are negative 14 , which might include an indirect effect of poor quality of their prey that were directly impacted by silica NPs. As for bulk silica and Si, their effects on predators or parasitoids are neutral 5 , 38 or negative via prey that fed on Si-treated plants 38 (Supplementary Table S2 ).…”

Section: Introductionmentioning

confidence: 99%

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Silica nanoparticles as pesticide against insects of different feeding types and their non-target attraction of predators

Thabet

Boraei

Galal

et al. 2021

Sci Rep

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The agricultural use of silica (SiO2) nanoparticles (NPs) has the potential to control insect pests while the safety and tritrophic effects on plants and beneficial natural enemies remains unknown. Here, we evaluate the effects of silica NPs on insect pests with different feeding niches, natural enemies, and a plant. Silica NPs were applied at different concentrations (75–425 mg/L) on field-cultivated faba bean and soybean for two growing seasons. The faba bean pests, the cowpea aphid Aphis craccivora and the American serpentine leafminer Liriomyza trifolii, and the soybean pest, the cotton leafworm Spodoptera littoralis, were monitored along with their associated predators. Additional laboratory experiments were performed to test the effects of silica NPs on the growth of faba bean seedlings and to determine whether the rove beetle Paederus fuscipes is attracted to cotton leafworm-infested soybean treated with silica NPs. In the field experiments, silica NPs reduced the populations of all three insect pests and their associated predators, including rove beetles, as the concentration of silica NPs increased. In soybean fields, however, the total number of predators initially increased after applying the lowest concentration. An olfactometer-based choice test found that rove beetles were more likely to move towards an herbivore-infested plant treated with silica NPs than to a water-treated control, suggesting that silica NPs enhance the attraction of natural enemies via herbivore-induced plant volatiles. In the laboratory, while silica NPs inhibited the development of faba bean roots at 400 mg/L, they did not affect germination percentage, germination time, shoot length, or vigor index compared to the control.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Silica nanoparticles as pesticide against insects of different feeding types and their non-target attraction of predators

Thabet

Boraei

Galal

et al. 2021

Sci Rep

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“…Various studies have revealed the importance of silica application on increasing plant growth significantly [9] . Silicon has generally not been considered essential for plant growth, although it is well recognized that many plants, particularly family Poaceae, have high silica content [10,11] concluded that spray of silica nanoparticles has reduced the cotton infestation by cotton bollworm, Pectinophora gossypiella. The application of silicon in coproduction provides a viable component of integrated management of pests because it leaves no pesticide residues in food and environment, and can be easily integrated with other pest management practices, including biological control [12] .…”

Section: Introductionmentioning

confidence: 99%

Effect of different silica sources on cotton leaf worm population in sugar beet plants, and their influence on sugar beet yield

HM¹,

SA²,

HA³

et al. 2022

J. Entomol. Zool. Stud.

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Field and laboratory experiments were conducted at Taifaa region and Agricultural research station, Kafr El-Sheikh Governorate, during two successive seasons 2019/2020 and 2020/2021. To estimate the efficiency of alternative materials for controlling Spodoptera littoralis, some silica sources were incorporated to the soil such as (straw and husk) and sprayed on the plants, spray such as potassium, magnesium, sodium silicate and Si NPs. Burnt husk added to the soil at the rate of 200 g/m 2 gave the highest reduction 50.

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“…The available literature on the entomotoxic effects of SiO2NPs focuses on insect pests of stored grains, such as Sitophilus oryzae (Goswami et al 2010;Debnath et al 2011), Callosobruchus maculatus (Rouhani et al 2012;Arumugam et al 2016), and Corcyra cephalonica (Vani and Brindhaa 2013). More recently, entomotoxic effects have also been tested on insect pests in field settings, including the lepidopterans Spodoptera littoralis (El-Samahy et al 2015;Ayoub et al 2017), Spodoptera litura, Achaea janata (Rani et al 2014), Mythimna separata (Mousa et al 2014) and Plutella xylostella (Shoaib et al 2018;Bilal et al 2020), as well as the aphids Lipaphis pseudobrassicae (Debnath et al 2010), Aphis gossypii (Pavitra et al 2018, and the mealybug Phenacoccus solenopsis (Pavitra et al 2018). These insects are external feeders and internal leaf feeders such as leafminers have not been well studied of SiO2NP effects.…”

Section: Introductionmentioning

confidence: 99%

Silica nanoparticles control a generalist pest, American serpentine leaf miner <em>Liriomyza trifolii</em>

Thabet¹,

Galal²,

Tuda³

et al. 2020

Preprint

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Insects quickly develop their resistance to conventional synthetic chemical insecticides. Silica nanoparticles (SiO2NPs) is a new promising approach not only in decreasing insect pest numbers but also for its safety regarding agricultural organisms such as plants and beneficial natural enemies. Here, we investigate the safety of SiO2NPs on the faba bean Vicia faba (Fabaceae) as a model plant for toxicity studies and its control efficiency against the American serpentine leafminer Liriomyza trifolii (Diptera: Agromyzidae) as a major devastating insect pest against a wide range of crops. The concentrations of 50, 100, 200 and 400 mg/L of SiO2NPs (spherical shape, 15.3 nm) as well as distilled water as the control were used to investigate the effect of the nanoparticles. Early stages of development of V. faba were evaluated. The same concentrations of SiO2NPs were applied by spraying on two weeks old bean seedlings to evaluate their toxic effect on the feeding, survival and body mass of L. trifolii. A qRT-PCR analysis was conducted to assess oxidative stress on the gene expression level of the major antioxidative enzymes, catalase and superoxide dismutase, in L. trifolii. SiO2NPs inhibited root development only at a high concentration and did not affect the germination percentage, germination time, shoot length and vigor index compared to the control. The survival rate of larvae was lower than the control at the highest concentration and the larval feeding velocity and pupal weight decreased at high concentrations. Gene expression of both enzymes at the pupal stage were not affected by SiO2NPs at any concentrations. This study suggests that care must be taken to utilize SiO2NPs at a suitable concentration in controlling pests, avoiding negative effects on plant growth.

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EFFICIENCY OF SILICA NANOPARTICLES, TWO BIOINSECTICIDES, PEPPERMINT EXTRACT AND INSECTICIDE IN CONTROLLING COTTON LEAFWORM, Spodoptera littoralis BOISD. AND THEIR EFFECTS ON SOME ASSOCIATED NATURAL ENEMIES IN SUGAR BEET FIELDS

Cited by 13 publications

References 11 publications

Silica nanoparticles as pesticide against insects of different feeding types and their non-target attraction of predators

Silica nanoparticles as pesticide against insects of different feeding types and their non-target attraction of predators

Effect of different silica sources on cotton leaf worm population in sugar beet plants, and their influence on sugar beet yield

Silica nanoparticles control a generalist pest, American serpentine leaf miner <em>Liriomyza trifolii</em>

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