The use of plant extracts in the control of &lt;i&gt;Aspergillus niger&lt;/i&gt; in the rot of yam (&lt;i&gt;Dioscorea spp&lt;/i&gt;.) during storage

Obilo, OP; Oguamanam, KN; Ogbedeh, KO; Onyia, V. N.; Ofor, MO

doi:10.4314/ijard.v6i1.2591

Cited by 8 publications

(10 citation statements)

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“…This is corroborated by results from previous works that support the event that once an organism has penetrated into tubers, the control becomes difficult (Obilo et al. ).…”

Section: Discussionsupporting

confidence: 83%

“…Overall, the results achieved from this study showed that the reduction of tuber rot was significantly higher for preventive test than for curative, especially for R. stolonifer. This is corroborated by results from previous works that support the event that once an organism has penetrated into tubers, the control becomes difficult (Obilo et al 2005).…”

Section: Discussionsupporting

confidence: 81%

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Evaluation of Clove Essential Oil as a Mycobiocide Against Rhizopus stolonifer and Fusarium solani, Tuber Rot Causing Fungi in Yam (Dioscorea rotundata Poir.)

Sameza

Mabou

Tchameni

et al. 2016

Journal of Phytopathology

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To exploit natural products for plant disease control, the essential oil of Syzygium aromaticum (L.) Merr. & Perr. (clove) was investigated for its antifungal activity against Rhizopus stolonifer and Fusarium solani, the postharvested yam tuber rot pathogens. The essential oil was obtained by hydrodistillation using a Clevenger‐type apparatus. The chemical composition of the oil was determined by gas chromatography and gas chromatography coupled with mass spectrometry. Antifungal activities of the oil were tested in vitro against mycelia growth and spores germination. In situ tests were conducted on healthy yam tubers, and necrosis symptoms were assessed. Results showed that eugenol (79.4%), eugenylacetate (9.2%) and isocaryophyllene (7.0%) were the major components. The oil exerted antifungal activities with total inhibition (TI) of the mycelia growth of R. stolonifer and F. solani was recorded at 200 and 300 ppm, respectively, while TI of spores germination was recorded at 31.25 and 250 ppm, respectively. For the standard fungicide (Ridomil®), TI value of mycelia growth was 1600 ppm for the both pathogens, while TI of spores germination were 200 ppm and 1600 ppm, respectively, for Rhizopus and Fusarium. In situ tests showed complete inhibition of yam tuber rot when the essential oil was applied at 2000 ppm for preventive tests. This oil also reduced significantly (P ≤ 0.05) necrosis development on yam tuber for curative test at the same concentration. Total inhibition of the necrosis by Ridomil (3000 ppm) was observed only for Rhizopus on preventive test. There were positive correlations between the oil concentration and the reduction of necrosis cause by R. stolonifer and F. solani. These findings showed that clove essential oil may serve as environmental friendly bio‐fungicide for the management of postharvest yam tuber rot.

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“…This is corroborated by results from previous works that support the event that once an organism has penetrated into tubers, the control becomes difficult (Obilo et al. ).…”

Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 81%

Evaluation of Clove Essential Oil as a Mycobiocide Against Rhizopus stolonifer and Fusarium solani, Tuber Rot Causing Fungi in Yam (Dioscorea rotundata Poir.)

Sameza

Mabou

Tchameni

et al. 2016

Journal of Phytopathology

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“…Lowest disease severity score (2.23) was observed in T 5 and T 6 which was 0.57-part less than T 1 (3.93) at 9 DAT. Obilo et al (2005) observed highest percentage (36.3%) of inhibition of fungi by applying neem extracts which supports the current study. Shelf life of banana Significantly longest shelf life was showed by T 2 and T 5 treated fruit (8.33 days) and shortest by control fruits (4.33 days).…”

Section: Disease Incidence In Bananasupporting

confidence: 90%

Effects of neem leaf extract and hot water treatments on shelf life and quality of banana

Siddiqua¹,

Khan²,

Tabassum³

et al. 2018

J Bangladesh Agric Univ

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A huge loss of banana occurs due to its shorter shelf life and inappropriate postharvest handling. There is a scarce of effective postharvest practices to combat this situation in Bangladesh. In this context, the current experiment was conducted to assess the effects of hot water (45°C for 2 or 5 minutes) and neem leaf extract (20% or 40%) on quality and shelf life of banana (cv. Sabri). The experiment was carried out in completely randomized design with three replications. Data on physico-chemical properties of banana were collected during storage in ambient conditions for two weeks. After two weeks of storage, the banana treated with 40% neem leaf extract showed longest shelf life (8.33 days), minimum change in color (score 4.88), minimum disease incidence (33.33%) and severity (score 2.23), lower reduction of titratable acidity (0.12%) and lower level of total soluble solid (6.90%). While the banana were treated with hot water at 45°C for 2 min, the treated banana also showed lower color change (score 4.53), longer shelf life (8.33 days), minimum loss of firmness (score 4.67), minimum change in vitamin C content (2.17mg/100g) and lower reduction in titratable acidity (0.11%). Among the combined treatments, the banana treated with the combination of hot water (at 45°C for 5 minutes)and 40% neem leaf extract also exhibited considerably longer shelf life (8.17 days), lower change in color (score 5.00), lower disease incidence (46.67%) and lower reduction in titratable acidity (0.15%). From the study it could be concluded that the fruit treated with 40% neem leaf extract retained the majority of the quality parameters for considerably longer period and thereby it could be recommended for practical use to ensure better and longer storage of banana (cv. Sabri) J.Bangladesh Agril. Univ. 16(3): 351–356, December 2018

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“…It is an important food and income security crop for people in the tropical and subtropical regions [5,6]. It is reported to be an important source of minerals, such as calcium, phosphorus, iron, and carbohydrates and vitamins such as riboflavin, thiamin, vitamin B, and vitamin C [1,7]. Yam has been used in traditional medicine in Africa and among the Chinese and other Asiatic people to treat diseases like diabetes, to increase coronary circulation, and to prevent hypercholesterolemia [1,4,8].…”

Section: Introductionmentioning

confidence: 99%

Absence of Effects of Herbicides Use on Yam Rots: A Case Study in Wulensi, Ghana

et al. 2019

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Yam farmers in Ghana have, over the years, used herbicides for weed control, particularly glyphosate. Although this has been helpful to them, there are complaints and concerns, among the yam farmers and a section of the public, that the yam tuber rots easily under the use of herbicides. This study, therefore, was set up at the field level to investigate the possibility of herbicides use causing yam rot. Two yam varieties, “laribako” and “olodo”, were grown under the conditions of chemical weed control (use of glyphosate) and manual weed control in three replicate sites in Wulensi in the Nanumba traditional area of northern Ghana. The study revealed that there was no difference in rots between herbicide treated yams and manually weeded yams, but that there was a difference in rots between “laribako” and “olodo” yam varieties. The results also showed that there was no difference in yield between herbicide treated yams and manually weeded yams. Based on the findings, it can be concluded that, there was no difference in yam rot and yield between herbicides treated and manually weeded yams, but “laribako” was more susceptible to rot than “olodo”.

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The use of plant extracts in the control of <i>Aspergillus niger</i> in the rot of yam (<i>Dioscorea spp</i>.) during storage

Cited by 8 publications

References 0 publications

Evaluation of Clove Essential Oil as a Mycobiocide Against Rhizopus stolonifer and Fusarium solani, Tuber Rot Causing Fungi in Yam (Dioscorea rotundata Poir.)

Evaluation of Clove Essential Oil as a Mycobiocide Against Rhizopus stolonifer and Fusarium solani, Tuber Rot Causing Fungi in Yam (Dioscorea rotundata Poir.)

Effects of neem leaf extract and hot water treatments on shelf life and quality of banana

Absence of Effects of Herbicides Use on Yam Rots: A Case Study in Wulensi, Ghana

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