Viabilidade de sementes de feijão caupi após o tratamento com óleo essencial de citronela (Cymbopogon winterianus Jowitt)

Xavier, M.V.A.; Oliveira, Carlos Romero Ferreira de; Brito, S.S.S.; Matos, Cláudia Helena Cysneiros; Pinto, Monalisa

doi:10.1590/s1516-05722012000500021

Cited by 9 publications

(7 citation statements)

References 8 publications

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“…Leite et al (2012) showed that the use of vegetal extract did not affect the seeds metabolism of Mimosa caesalpiniaefolia Benth and even favored the control of pathogens, increasing the viability of seeds. The same behavior related to the speed of germination was also reported by Xavier et al (2012), in seeds of cowpeabeans (Vigna unguiculata L.). Between the biological products, Trichodermil ® and Trichoplus ® were more effective in the reduction of fungus population in all the packages.…”

Section: Resultssupporting

confidence: 82%

Alternative methods of biological control in maintaining the viability of stored coffee seeds

Ribeiro¹,

Souza²,

Araújo³

et al. 2016

Afr. J. Agric. Res.

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The objective of this work was to evaluate the efficiency of different alternative methods of biological control in maintaining the viability of coffee seeds. For the control of fungus contamination in seeds, dehydrated and powdered medicinal plants in doses of 200 g kg -1 of seed, were tested with chemical fungicides mancozebe (Dithane® NT 4 g kg-1 of seed), potassium sorbate (300 g L -1 ) and sodium benzoate (300 g L -1 ) and three biological products, Trichodermil® SP (1 g kg -1 of seed), Trichodel® (50 g kg -1 of seed) and Trichoplus® (50 g kg -1 of seed). Samples of 200 g of seeds were conditioned in three different packages: polypropylene flasks, kraft paper bags and polyethylene + nylon bags. After, they were stored in cold chamber at 16 ± 3°C of temperature, for a period up to 15 months with evaluations for each three months. Seeds conditioned in kraft paper bags presented percentage of germination higher than those conditioned in polypropylene flasks or polyethylene + nylon bags. In seeds treated with rosmarin, garlic and Trichoplus®, there was a reduction in the total microbial, and the best germinated on 12 and 15 months of storage.

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Section: Resultssupporting

confidence: 82%

Alternative methods of biological control in maintaining the viability of stored coffee seeds

Ribeiro¹,

Souza²,

Araújo³

et al. 2016

Afr. J. Agric. Res.

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“…The encapsulation of citronellal resulted in GI of 79 ± 3.5%. Xavier et al (2012) reported that citronella oil and its constituents could influence the germination index of cowpea beans, reducing the vigor of the seeds. Encapsulation of the repellents in nanoparticles increased the germination percentage, compared to the nonencapsulated repellents, indicating a protective effect of the nanoparticles.…”

Section: Results and Discussionmentioning

confidence: 99%

Zein Nanoparticles as Eco-Friendly Carrier Systems for Botanical Repellents Aiming Sustainable Agriculture

Oliveira

Campos

Pereira

et al. 2018

J. Agric. Food Chem.

155

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Botanical repellents represent one of the main ways of reducing the use of synthetic pesticides and the contamination of soil and hydric resources. However, the poor stability and rapid degradation of these compounds in the environment hinder their effective application in the field. Zein nanoparticles can be used as eco-friendly carrier systems to protect these substances against premature degradation, provide desirable release characteristics, and reduce toxicity in the environment and to humans. In this study, we describe the preparation and characterization of zein nanoparticles loaded with the main constituents of the essential oil of citronella (geraniol and R-citronellal). The phytotoxicity, cytotoxicity, and insect activity of the nanoparticles toward target and nontarget organisms were also evaluated. The botanical formulations showed high encapsulation efficiency (>90%) in the nanoparticles, good physicochemical stability, and effective protection of the repellents against UV degradation. Cytotoxicity and phytotoxicity assays showed that encapsulation of the botanical repellents decreased their toxicity. Repellent activity tests showed that nanoparticles containing the botanical repellents were highly repellent against the Tetranychus urticae Koch mite. This nanotechnological formulation offers a new option for the effective use of botanical repellents in agriculture, reducing toxicity, protecting against premature degradation, and providing effective pest control.

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“…On the other hand, the results of the germination test, first germination index and GRI reveal a phytotoxic effect of the essential oils on the moringa seeds (Table 2). This effect has previously been observed on seeds of Vigna unguiculata treated with citronella oil Xavier et al (2012) [37]. Analyzing the effect of essential oils on the control of pathogens and the germination of corn seeds, Jardinetti et al (2011) [38] found that the thyme oil reduced the GRI when compared to the negative control.…”

Section: Discussionmentioning

confidence: 63%

Physiological potential and fungi control of Moringa oleifera Lamark seeds treated with essential oils

et al. 2020

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Moringa oleifera Lam. is a fast-growing, drought-resistant, rustic plant with high nutritive value. The aim of the present study was to determine the effectiveness of essential oils from citronella grass (Cymbopogon winterianus), lemongrass (Cymbopogon citratus) and thyme (Thymus vulgaris) on the reduction of the incidence of fungi associated with moringa seeds as well as the influence of these oils on the physiological quality of the seeds. Two experiments were conducted, both with an entirely randomized design. The seeds were treated with the citronella, lemongrass and thyme essential oils at concentrations of 250 and 500 µL (100 seeds per treatment). The fungicide Captan was used as the control treatment. The incidence of fungi on the treated seeds was evaluated in the first experiment. The germination percentage, shoot length, primary root length, shoot dry mass and root dry mass of the seedlings were evaluated in the second experiment. The most incident fungus was also isolated for the transmission test. The following fungi were identified on the moringa seeds: Fusarium spp., Nigrospora sp., Aspergillus sp., Penicillium sp., Alternaria sp., Phomopsis sp., Curvularia sp., Colletotrichum sp., Pestalotipsis sp., Lasiodiplodia sp. and Chaetomium sp. The essential oils significantly reduced the incidence of the fungi. However, changes in the physiological quality of the seeds were associated with the use of the oils. No transmission of Fusarium spp. from the seeds to the seedlings occurred, but this fungus caused the rotting of seeds in the germination phase.

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Viabilidade de sementes de feijão caupi após o tratamento com óleo essencial de citronela (Cymbopogon winterianus Jowitt)

Cited by 9 publications

References 8 publications

Alternative methods of biological control in maintaining the viability of stored coffee seeds

Alternative methods of biological control in maintaining the viability of stored coffee seeds

Zein Nanoparticles as Eco-Friendly Carrier Systems for Botanical Repellents Aiming Sustainable Agriculture

Physiological potential and fungi control of Moringa oleifera Lamark seeds treated with essential oils

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