Field management of &lt;i&gt;Phytophthora&lt;/i&gt; blight disease of cocoyam &lt;i&gt;Colocasia esculenta&lt;/i&gt; L.) With spray regimes of selected fungicides in Nsukka, south eastern Nigeria

Omeje, T. E.; Ugwuoke, KI; Aba, SC; Eze, SC; Ogwulumba, S. I.; Ezema, RA

doi:10.4314/as.v14i2.6

Cited by 7 publications

(16 citation statements)

References 3 publications

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“…The study sites were in the humid forest zone characterized by warm and humid climatic conditions which favoured the dispersal of the pathogen. These observations are in line with those of other researchers [6,9,19,23].…”

Section: Discussionsupporting

confidence: 94%

“…Disease incidence was determined as the ratio of the number of plants with disease symptoms to the total number of plants assessed and presented as a percentage. Severity was evaluated from the infected area of two fully opened leaves per plant and rated based on the 5-point scale proposed by Omeje, et al [19] where 0 = no infection and 4 = very high infection. The formulae used were as stated below:…”

Section: Disease Assessmentmentioning

confidence: 99%

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An Assessment of Rural Women Participation and Efforts Towards Sustainable Agricultural Development in Ikenne Local Government (2016 – 2020)

Ugwukah¹,

Audu²

2021

JAC

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This paper highlighted that rural women play pivotal roles in agricultural and rural development, even much more than their male counterparts. Although not denying the supportive roles of the men in attaining their production goals, the work explores rural women’s participation in agricultural productive activities such as planting the seedlings, weeding, and interval intercultural operation of the crops. The objective of these studies was to assess the extent to which rural women in the Ikenne Local Government were involved in the productive efforts of two major agricultural produce – Ugu vegetable (pumpkin vegetables) and the corn seedlings in various farms locations. This study focused on the role of women working with full passion in the production of these crops right from the soil preparation through tillage, local manur styles till it is harvested and further into the marketing and storage of these crops for the next planting season; a chain of productive forces just to make ends meet and to sustain their families. For this study, two villages/towns Ilishan-Remo and Ikenne-Remo were selected according to their experiences on these crops and for their proximity to the university and convenience of the research. Results accessed showed formal training on the production of these crops and management. From the overall studies, it was assumed that the maximum percentage of the farmers of these regions adopted indigenous knowledge for the cultivation of these crops including all cultural practices for raising the crops as well as in the post-harvest marketing activities also. The paper through its findings stressed that the public, private sectors, and NGOs in both local governments need to introduce diversity management programs in order to reduce the poverty levels of these rural women in agricultural production. The concluding section of the work recommends some policies that would stimulate these determined producers to such levels that could enable them to grow into big-time farmers and be able to contribute meaningfully to their communities and beyond.

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Section: Discussionsupporting

confidence: 94%

Section: Disease Assessmentmentioning

confidence: 99%

An Assessment of Rural Women Participation and Efforts Towards Sustainable Agricultural Development in Ikenne Local Government (2016 – 2020)

Ugwukah¹,

Audu²

2021

JAC

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“…Lower genetic susceptibility of NCE-003 and NCE-002 coupled with the increased inhibition of TLB on the treated taro crop with concentration had translated to the higher tuber yield per hectare, higher corm weight, higher number of cormels, larger leaf area and better performance of these varieties than the others. This view is consistent with the report of Omeje et al (2015) who found from a field trial that different regimes of aqueous extract of A. indica amongst other bio-fungicides sufficiently decreased the incidence and severity of attack of TLB on taro, and increased the performance and corm yieId of the crop in Nsukka, Nigeria. It is also in tandem with the results obtained from bio-pesticides by Shakywar et al (2012Shakywar et al ( .…”

Section: Discussionsupporting

confidence: 92%

“…Taro is widely grown by smallholder farmers in many humid tropical locations including The Pacific, Asia and Africa. In Africa, taro is a common crop in the farming systems of Ghana, Cameroon and Nigeria (Omeje et al, 2015). The carbohydrate rich tuber (Figure 1, bottom right) has a pleasant nutty flavour and can be boiled, fried, roasted or baked while the edible leaves with rich presence of vitamins (riboflavin, thiamine and niacine) and minerals (P, Fe, Zn, K, Cu and Mn) feature prominently as leafy vegetable in many African soups and \porridges (Nielsen et al 1997;Asraku, 2010;Singh et al 2012;Enyiukwu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Varietal response and toxicity of aqueous leaf extracts of Azadirachta Indica to Phytophtora Colocasiae causing Taro leaf blight in Unwana Southeast, Nigeria

Chukwu¹,

Enyiukwu²

2021

Direct Research Journal of Biology and Biotechnology

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Taro is one of the major leafy vegetable and tuber staples in the southeast, Nigeria. Production of the crop is, however, seriously constrained by the challenge of taro leaf blight (TLB). Selection of appropriate variety and bio-pesticides are seen as major ways of ameliorating this impediment. This work evaluated the response of 4 varieties of taro to TLB, and effects of 5 levels of Azadirachta indica (0, 50, 100, 150, and 200 g/ha), and 200g/ha of Ageritum conyzoides and Mancozeb (as positive controls) on the disease initiation and development. The experiment was set up as 4 x 7 factorial experiments in RCBD with 3 replicates. The result showed that NCE-003 which had 56.15% and 2.28 and NCE-002 (60.16% and 2.84) for mean disease and severity scores respectively were the least susceptible varieties, while NCE-005 was the most susceptible to the disease with (82.63% and 7.03) for the respective parameters under consideration. About 50-200g/ha of aqueous extract of A. indica inhibited spore germination (77.09-96.02) and radial growth (58.24-68.37) of the fungus compared to (0.00%) obtained from the control experiment. Also these levels of the test extract significantly (P<0.05) minimized the mean incidence and severity of TLB from 82.63% and 7.08 on the control plants by (58.24-65.37%) and (1.84-2.61) respectively in the field. Minimization of the disease and crop tissue damage translated to improved mean taro yield by (5.83t-10.90/ha) and mean corm weight (115.50-147.20g) compared with 4.36 and 91.70% recorded on the untreated control experiment; and general performance (leaf area, number of leaves cormels) of the crop. Therefore, integrating the use of NCE-003 and NCE-002 with 150-200g/ha of A. indica could effectively improve taro corm and leaf yield for sustainable food sufficiency and security in sub-Saharan Africa.

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“…The prevalent nature of the disease in the Fako Divison might be due to the fact that spores are produced on the leaves and spread by wind and rain to other plants nearby. This study is in agreement with those of Grade and Joshi, [10]; Mbong et al [7]; Omeje et al [40]; Puije et al [41] and Otieno et al [22], who observed that high incidence of the disease on taro plants can be influence by environmental factors such as temperature and humidity. This division falls under the humid forest zone with tropical rainforest with a monthly temperature of about 27°C and an annual rainfall between 1500 and 12500 millimeters, a condition that favours the spread of the diseases.…”

Section: Disease Severitysupporting

confidence: 93%

Assessing Taro (Colocasia esculenta (L.) Schott) Leaf Blight Incidence, Severity, and Farmers’ Knowledge of the Disease in Fako Division of Cameroon

Takor

Monono

Ntane

et al. 2020

IJPR

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Taro leaf blight (TLB), a major disease of taro plant caused by Phytophthora colocasiae, a pseudo-fungus, that occurs in many taro producing areas, especially in the South West of Cameroon. A Survey was conducted to assess farmers’ knowledge, as well as to determine the incidence and the severity of the disease in taro fields. Structured questionnaires were administered in selected locations (Bokova, Ekona, Muea, Mile 16, Mutengene, and Likomba) of taro production. Two farms were selected with two quadrats of 64 m2 each were carved to assess disease incidence and severity on taro. The number of plants infected with taro leaf blight were counted and the area of the affected leaves measured was used to evaluate the disease incidence and disease severity. Data collected were subjected to ANOVA for complete randomized design and the means were compared using Tukey test at 0.05 probability levels. The results revealed that most of the farmers could identify the disease while practicing cultural methods in controlling the disease. The results also revealed significant differences (p = 0.001) in disease incidence and disease severity in all the localities, with Mile 16 showing the highest percentage mean of 96.53% and 85.59%, respectively. The severity scored showed high infection range of 3 – 3.95 in all locations except in Likomba (2.60). It could be concluded from the results that there were high prevalence of taro leaf blight disease in Fako Division. Good management strategies are therefore required to control Taro leaf blight and improve taro production in the area.

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Field management of <i>Phytophthora</i> blight disease of cocoyam <i>Colocasia esculenta</i> L.) With spray regimes of selected fungicides in Nsukka, south eastern Nigeria

Cited by 7 publications

References 3 publications

An Assessment of Rural Women Participation and Efforts Towards Sustainable Agricultural Development in Ikenne Local Government (2016 – 2020)

An Assessment of Rural Women Participation and Efforts Towards Sustainable Agricultural Development in Ikenne Local Government (2016 – 2020)

Varietal response and toxicity of aqueous leaf extracts of Azadirachta Indica to Phytophtora Colocasiae causing Taro leaf blight in Unwana Southeast, Nigeria

Assessing Taro (Colocasia esculenta (L.) Schott) Leaf Blight Incidence, Severity, and Farmers’ Knowledge of the Disease in Fako Division of Cameroon

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