Resistência induzida ao pulgão-gigante-do-pinus (Hemiptera: Aphididae) em plantas de Pinus taeda adubadas com silício

Camargo, Joelma Melissa Malherbe; Moraes, Jair Campos; Oliveira, E. B. de; Iede, E. T.

doi:10.1590/s0006-87052008000400015

Cited by 6 publications

(3 citation statements)

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“…However, adults that emerged from Si-treated plots produced 80% less offspring than those from control plants [85]. Moreover, a significant decline in the mean aphid population due to silicon applications has been reported in a score of important case studies [86][87][88][89][90]. Furthermore, [28] also highlighted the direct relation of Si application with a prolonged developmental duration of C. suppressalis in rice crops.…”

Section: Discussionmentioning

confidence: 95%

Determination of Silicon Accumulation in Non-Bt Cotton (Gossypium hirsutum) Plants and Its Impact on Fecundity and Biology of Whitefly (Bemisia tabaci) under Controlled Conditions

et al. 2022

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Considering the resistance development-potential of whitefly (Bemisia tabaci) against control tactics with limited action mechanisms, the present study investigated the accumulation of two different silicon (Si) sources (SiO2 and K2SiO3) in cotton plants. The tested dose rates (0, 200, and 400 mg/L) of both Si sources were applied directly to the soil or through foliar application on cotton leaves. Moreover, a laboratory bioassay was also conducted to evaluate the performance of applied Si sources against the oviposition preference and biology of B. tabaci. A significantly higher Si accumulation, reduction in oviposition preference, and prolonged developmental period of all nymphs and total life cycle of B. tabaci was observed in the case of foliar-applied silicon. Similarly, among Si sources, a significant decline in the number of oviposited eggs and delay in the developmental period of B. tabaci was observed in the case of SiO2, followed by K2SiO3. Moreover, cotton plants subjected to SiO2 treatments possessed higher Si contents in their leaves than K2SiO3 treated plants. The results further revealed that both Si sources showed promising results at their higher concentrations regarding the tested parameters of Si accumulation, fecundity, and developmental period of B. tabaci. Our results strongly suggest that among emerging pest control strategies in cotton plants lies the use of foliar application of Si, which can also be incorporated in different integrated pest management programs due to its safety for humans and beneficial insect fauna.

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Section: Discussionmentioning

confidence: 95%

Determination of Silicon Accumulation in Non-Bt Cotton (Gossypium hirsutum) Plants and Its Impact on Fecundity and Biology of Whitefly (Bemisia tabaci) under Controlled Conditions

et al. 2022

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“…Entretanto, em Poaceas, na qual ocorre deposição de sílica formando uma dupla camada de sílica, mecanismos de não-preferência foram observados para diferentes espécies de pulgões em plantas de milho, Pinus sp. e trigo (CAMARGO et al, 2008;COSTA et al, 2007;MORAES et al, 2005).…”

Section: Resultsunclassified

“…Contudo, os trabalhos com esses produtos têm demonstrado resultados promissores. Camargo et al (2008) verificaram influencia do silício na preferência e reprodução do pulgão Cinara atlantica (Wilson) (Hemiptera: Aphididae) em Pinus taeda. Em sorgo e em trigo foi possível observar que a aplicação de silício reduziu a preferência e a reprodução de Schizaphis graminum (Rondani) (Hemiptera: Aphididae) (BASAGLI et al, 2003;CARVALHO et al, 1999).…”

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Efeito de indutores da resistência e cultivares de algodão no comportamento de Aphis gossypii

2010

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Resumo -Objetivou-se avaliar o efeito do silício, acibenzolar-S-methyl (ASM) e cultivares de algodão no comportamento de A. gossypii. Foram realizados ensaios de não-preferência com pulgão áptero e com pulgão alado, ambos com nove tratamentos distribuídos em esquema fatorial 3 (indutores: Silício, ASM e Testemunha) x 3 (cultivares: BRS Verde, BRS Rubi e BRS Safira), com treze repetições. Foram testados ácido silícico na dosagem equivalente a 3 t ha -1 , e ASM a 0,2%. Para o teste com pulgão áptero, após 14 dias da aplicação dos indutores, colocaram-se seções foliares de cada tratamento em placas de Petri, formando uma arena onde foram liberados 24 pulgões adultos. O número de adultos e de ninfas do pulgão nas seções foliares foi avaliado 24; 48 e 72 horas após liberação. Para o segundo teste, após 14 dias da aplicação dos indutores, pulgões alados foram liberados aleatoriamente nas plantas cultivadas em câmara climatizada. Após 24; 48 e 72 horas da liberação, avaliaramse o número de adultos alados e de ninfas presentes nas plantas. Pelos resultados as cv. Verde e Rubi foram menos infestadas por A. gossypii em relação à Safira e o silício não afetou a preferência do pulgão. Contudo, o produto ASM mostrou-se viável e poderia contribuir na redução da colonização das plantas por pulgões.Palavras-chave -Gossypium hirsutum. Insecta. MIP. Pulgão-do-algodoeiro.Abstract -Aimed to evaluate the effect of silicon, acibenzolar-S-methyl (ASM) and cultivars of cotton plant on the behavior of A. gossypii. Were conducted non-preference trials with apterous aphid and with winged aphid, both with nine treatments arranged in a factorial scheme 3 (inductors: Silicon ASM and Control) x 3 (cultivars BRS Verde, BRS Rubi and Safira), with thirteen replications. The treatments were distributed in a factorial scheme 3 (cv. BRS Verde, BRS Safira and BRS Rubi) x 3 (silicon, ASM and control) with thirteen replicates. Silicic acid at the dosage equivalent to 3 t ha -1 and 0.2% ASM were tested. For the test with apterous aphid, after 14 days from the application of the inducers, leaf sections of each treatment were placed into Petri dishes forming an arena where 24 adults aphid were released. The number of adults and nymphs of the aphid was evaluated after 24; 48 and 72 hours after release. For the second test, after 14 days from the application of the inducers, winged aphids were released randomly on the plants grown in an acclimatized chamber. After 24; 48 and 72 hours from the release, the number of winged adults and of nymphs present on the plants was evaluated. From the results, the both cv. Verde and Rubi were less infested in relation to Safira and the application of silicon did not affect the preference of A. gossypii. However the product ASM proved viable and could contribute to the reduction of the colonization of the plants by aphids. Key words - IntroduçãoEm praticamente todos os países produtores de algodão os insetos-praga e as doenças são considerados os principais fatores que contribuem para a redução na produção do algodoe...

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Effect of silicon on tritrophic interaction of cotton, Gossypium hirsutum (Linnaeus), Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) and the predator, Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae)

Abbasi

Sufyan

Arif

et al. 2020

Arthropod-Plant Interactions

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Resistência induzida ao pulgão-gigante-do-pinus (Hemiptera: Aphididae) em plantas de Pinus taeda adubadas com silício

Cited by 6 publications

References 14 publications

Determination of Silicon Accumulation in Non-Bt Cotton (Gossypium hirsutum) Plants and Its Impact on Fecundity and Biology of Whitefly (Bemisia tabaci) under Controlled Conditions

Determination of Silicon Accumulation in Non-Bt Cotton (Gossypium hirsutum) Plants and Its Impact on Fecundity and Biology of Whitefly (Bemisia tabaci) under Controlled Conditions

Efeito de indutores da resistência e cultivares de algodão no comportamento de Aphis gossypii

Effect of silicon on tritrophic interaction of cotton, Gossypium hirsutum (Linnaeus), Bemisia tabaci (Gennadius) (Homoptera: Aleyrodidae) and the predator, Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae)

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