Volatile fatty acids from whey volatilome as potential soil fumigants to control Meloidogyne incognita

Silva, Maysa Siqueira Gonçalves da; Campos, Vicente Paulo; Terra, Willian César; Pacheco, Paulo Victor Magalhães; Paula, Letícia Lopes de; Barros, Aline Ferreira; Pedroso, Márcio Pozzobon

doi:10.1016/j.cropro.2021.105567

Cited by 5 publications

(1 citation statement)

References 30 publications

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“…The fatty acids equally reduced M. incognita reproduction significantly on Cucumus sativus with an increased biomass growth (Zang et al, 2012). Analogously, the results in this research was sustantiated by Gonçalves da Silva et al (2021). They demonstrated that 80% egg hatch inhibition was achived with ethyl octanoate at 1000 μg mL −1 concentration, while octanoic acid, ethyl octanoate, and isovaleric acid provided 80% nematostatic action on M. incognita J2.…”

Section: Resultssupporting

confidence: 72%

Application of Fatty Acid Esters on Meloidogyne incognita Infected Jew's Mallow Plants

Fabiyi¹,

Baker²,

Olatunji³

2022

PJN

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| Jew's mallow (Corchorus olitorius) is a vegetable of importance in Nigeria which is often times infested with root-knot nematodes (RKNs), thus reducing yield and expected income. Principally, synthetic nematicides are employed in the management of RKNs on agricultural fields. The synthetics are confronted with a web of regulations on account of their unhealty negative effect on humans and the environment. Plant protection is primarily saddled with replacing the synthetics. A promising technique is the application of bio-pesticides. Organic fatty acid esters (FAE) are reassuring materials with nematicidal activities. Medicinal plants are rich source of acid esters, hence Alstonia boonei (Apocynaceae) leaves were extracted cold in ethyl acetate. This yielded crude extract that was subjected to column chromatography (silica gel 100-120 mesh grade), which afforded fractions that were analysed with GCMS and FTIR for constituent identification. The result shows octanoic acid; hexanoic acid methyl ester; ethyl octanoate; 9, 12-octadecadienoic acid methyl ester; dodecanoic acid; octadecanoic acid methyl ester; decanoic acid; octadecanoic acid ethyl ester and tetradecanoic acid as the major components while the infra red spectral diagnostic signals agree with the expected vibrational frequencies corresponding to C-H and carbonyl C=O functional groups of fatty acid and esters. Jew's mallow plants infected with Meloidogyne incognita on the field were treated with the fatty acid esters (FAE) and compared to deionised water and carbofuran as control in two season trials. There was increase in biomass and vegetative growth with notable reduction in M. incognita reproduction in plants treated with FAE at 0.75 mg/ml in the first and repeat experiments. Juvenile population per gram root and soil were reduced significantly at 0.75 and 0.50 mg/ml of FAE in comparison with control. Late flowering was recorded in the untreated control experiment, while plants treated with FAE flowered notably earlier. Application of FAE is recommended for the sustainable management of M. incognita in Jew's mallow plants.

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Section: Resultssupporting

confidence: 72%

Application of Fatty Acid Esters on Meloidogyne incognita Infected Jew's Mallow Plants

Fabiyi¹,

Baker²,

Olatunji³

2022

PJN

View full text Add to dashboard Cite

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Effects of Substrate and Processing Conditions on Nematode Suppressiveness of Anaerobic Biogas Digestates

et al. 2023

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Biogas digestates produced from anaerobically processed food or dairy manure had demonstrated some potential to suppress different pathogens and pests. In this study, digestates from these two substrates processed mesophilically (20-40 ºC) or thermophilically (>40 ºC) were compared for their nematode-suppressive potential. In bioassays, their suppressive potential of Heterodera schachtii or Meloidogyne incognita was tested at different amendment rates. Testing was expanded to field microplot experiments with M. incognita and greenhouse tests with Pratylenchus vulnus. In the bioassay with H. schachtii, fewer nematodes penetrated radish roots after amendment with thermophilic than with mesophilic digestates. Root penetration was lowest after treatment with food waste and thermophilic dairy manure at the highest rate. In a watermelon bioassay with M. incognita, nematode-induced galling and egg mass production were reduced after amendment with food waste digestates compared to manure digestates, and after thermophilic compared to mesophilic digestates in the case of egg masses. In a greenhouse experiment with peach rootstock ‘Nemaguard’, the numbers of P. vulnus in roots were diminished after amendment with digestates at the highest rate. In microplot experiments with bell peppers, plants initially were more vigorous after amendment with thermophilic digestates than after mesophilic digestates additions. This effect was transient and was no longer measurable at harvest. In summary, food waste digestates, especially thermophilically produced had nematode suppressive and plant growth improving properties. These effects were not long-lasting and probably need additional mitigation for practical utility.

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Chemical composition of pequi essential oil (Caryocar brasiliense) and nematicidal activity in the control of Meloidogyne javanica

Marques,

Sousa,

Guimarães

et al. 2023

Rev. Ceres

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Volatile fatty acids from whey volatilome as potential soil fumigants to control Meloidogyne incognita

Cited by 5 publications

References 30 publications

Application of Fatty Acid Esters on Meloidogyne incognita Infected Jew's Mallow Plants

Application of Fatty Acid Esters on Meloidogyne incognita Infected Jew's Mallow Plants

Effects of Substrate and Processing Conditions on Nematode Suppressiveness of Anaerobic Biogas Digestates

Chemical composition of pequi essential oil (Caryocar brasiliense) and nematicidal activity in the control of Meloidogyne javanica

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