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All Journal Jurnal Keteknikan Pertanian Tropis dan Biosistem International Journal of Agricultural Sciences International Journal on Food, Agriculture and Natural Resources (IJFANRES)
Ndifon, Elias Mjaika
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Agriculture, Biological Sciences & Forestry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Environmental Science Mechanical Engineering Social Sciences

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Integrated Disease Management, Combining Chemical and Bio-control Agents, is Effective Against Agroathelia rolfsii Infecting Eggplants Ndifon, Elias Mjaika
International Journal on Food, Agriculture and Natural Resources Vol 5, No 3 (2024): IJ-FANRES
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v5i3.361

Abstract

The seeds of Guibourtia coleosperma serve as potential Agroathelia rolfsii severely infects 500 plant species causing stem and root rots on plants including eggplants. This study evaluated the compatibility of integration of chemical fungicides x biological agents for the management of recalcitrant disease agents like A. rolfsii.  A factorial trial was set up using the completely randomized design with each treatment being replicated thrice. Interaction of Mancozeb (at 50 and 100% concentrations) x Trichoderma species caused 29.3-100% inhibition of A. rolfsii and Ketoconazole (at 50 and 100% concentrations) x Trichoderma species caused 95.8-100% inhibition of A. rolfsii. Mancozeb (100% concentration) x T. harzianum controlled the pathogen most, followed by the T. viride combination. The percentage inhibition by chemical fungicide (main effects) ranged from 100% inhibition by Ketoconazole (100% concentration) to 97.9-100% for Ketoconazole (50% concentration), to 65.2-93.6% for Mancozeb (100% concentration) and lastly 23.3-78.6% for Mancozeb (50% concentration) with time. The percentage inhibition (main effects) ranged from 60.3-96.7% for T. virens, 60.8-92.1% for T. harzianum, and 69.3-95.8% for T. viride with time. The chemical fungicides and Trichoderma species were highly positively correlated (0.522** at p ≤ 0.05). The high concentrations of the fungicides antagonized the Trichoderma species as well, so more work should be carried out on this aspect. This approach to disease management for eggplants is highly effective using chemical x bio-control agents to safeguard eggplants from A. rolfsii. Applying this method can protect crops and result in long-term profitability. The combination of fungicides and biocontrol agents is strongly recommended for the management of this fungal pathogen.
MANAGING PHOMA LEAF BLIGHT OF FLUTED PUMPKIN USING DIVERSE AGENTS ndifon, elias mjaika
International Journal of Agricultural Sciences Vol. 7 No. 2 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.7.2.57 - 63.2023

Abstract

Purpose: Production of fluted pumpkin (Telfaria occidentalis), a very important fruit and leaf vegetable in Africa, is highly constrained by diseases like Phoma blight. Uptodate the pumpkin diseases acknowledged include fungi diseases (two wilts, leaf blight, downy mildew, leaf spot, anthracnose and three fungi storage diseases), three viruses (Telfaria mosaic virus, cucumber mosaic virus and pepper mottle virus), bacteria leaf soft rot and root knot nematodes.Methods: An in vitro research was carried out using completely randomized design with each treatment replicated three times. Two subtrials were conducted to determine the effect of firstly five Trichoderma isolates and secondly of three botanicals on Phoma blight.Findings: Inhibition of Phoma sorghina by Trichoderma isolates ranged between 14-58%. After 144 hours of biocontrol, significant differences (P≤0.05) between the treatments in decreasing magnititude of performance followed the order T. virens isolate MZ2, T. harzianum isolate AIBN3, T. harzianum isolate BGMZ3, T. harzianum isolate ZXMZ6 and finally T. harmatum isolate ZXGV5. Also, after 144 hours of exposure, Parkia biglobosa (100%) performed significantly better, followed by P. biglobosa 50% and Juniperus chinensis 100% (which were at par), then Monoon longifolium 100%.Conclusion: Biocontrol and use of botanicals in fluted pumpkin production are feasible options to plant disease managaement in pumpkin production. Further work on integrated management of this disease is ongoing but so much needs to be done when one is dealing with vegetables. Safety and nature of the relationship between the control measures has barely started
Management Of Fusarium Solani (Root Rot Of Common Bean) Using Disparate Methodologies Ndifon, Elias Mjaika
International Journal of Agricultural Sciences Vol. 7 No. 2 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ijasc.7.2.64 - 71.2023

Abstract

Purpose: Common bean is frequently infected by several pathogens which reduce its yield (20–100%) and quality of the produce. Three sub-trials were employed to proffer solutions to infection of beans by Fusarium solani.Methods: All three sub-trials (botanical, chemical, and bio-control sub-trials) were setup using the completely randomized design with each treatment replicated thrice in vitro.Findings: The results of applying synthetic fungicides (i.e.; metalxyl, metalaxyl+copper, and metalaxyl+carboxin) revealed that all the fungicides were significantly different (P≤0.05) compared with the control. Metalaxyl (single agent) was significantly (P≤0.05) less effective compared to combined formulations with metaxyl and other agents. The best treatment was Metalaxyl+Copper (100% concentration) followed by Metalaxyl+Copper (50% concentration), then Metalaxyl+Carboxin (100% concentration), Metalaxyl+Carboxin (50% concentration) in descending order of performance. All the plant extracts (Silk cotton (Ceiba pentandra), Tamarind (Tamarindus indica), wild cardamom (Sulettaria surculosa), and Eucalyptus (Eucalyptus globolus)) were significantly different (P≤0.05) compared with the control. The highest control of this pathogen was attained using Eucalyptus (100% concentration), followed by Eucalyptus (50% concentration), Cardamom (100% concentration), Cardamom (50% concentration), Silk cotton (100% concentration), Tamarind (100% concentration), Tamarind (50% concentration), and finally Silk cotton (50% concentration). The inhibitory efficacy of Trichoderma isolates shows that they were significantly different (P≤0.05) compared with the control. Trichoderma harzianum isolate AIM22 and Trichoderma hamatum isolate ZXPB provided the best control followed by Trichoderma harzianum isolate AIBN, and finally, Trichoderma viride isolate AIBK.Conclusion: The use of these botanical, chemical, and bio-control agents revealed their potency in managing Fusarium solani. 
Examining The Impact of Various Management Strategies Implemented to Combat Post-Harvest Fungal Rots Infecting Yam, Sweet Potato, And Cocoyam: Mengkaji Dampak Berbagai Strategi Manajemen Yang Diterapkan Untuk Memerangi Penyakit Busuk Jamur Pasca Panen Yang Menginfeksi Yam, Ubi Jalar, Dan Talas Ndifon, Elias Mjaika
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 2 (2025): August 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jkptb.2025.013.02.01

Abstract

Roots and tubers are essential foodstuffs, socio-economic, and industrial raw materials. Yams, cocoyam, and sweet potatoes are often infected before harvest, during harvest, in transit, and in storage by pathogens. Some sub-trials were conducted to devise management strategies against the principal fungal pathogens of these crops using botanical and bio-control agents. These inquiries included controlling isolated pathogens in vitro and in vivo. Six replicated experiments were set up using the completely randomized design.  In vitro, botanicals (i.e. Guieria, Bauhinia, Eucalyptus, Ricinus, and Ixora spp.) controlled Lasidioplodia theobromae resulting in up to 35.0% inhibition with time.  Parkia (100% concentration) and Tamarindus 100% significantly controlled L. theobromae most. Secondly, Trichoderma spp. inhibited L. theobromae in vitro causing up to 40% inhibition. T. virens isolate BGMZ2, T. viride AIBK, T. harmatum ZXGV, and T. harzianum AIBN (in descending order of efficiency) performed significantly (p?0.05) better than the Control. Thirdly, Mancozeb, Carbendazim+Mancozeb, and Mancozeb+Copper(I)Oxide+Metalaxyl controlled L. theobromae causing up to 100% inhibition with time. Application of the best botanicals like Guieria (50% concentration), Bauhinia (50% and 100%), Guieria 100%, and Ixora 100% leaves; Eucalyptus (50% and 100%) and Ricinus 100% resins significantly (p?0.05) reduced rots in vivo. These botanicals effectively controlled L. theobromae, causing up to 100% inhibition in vivo with time. Application of Eucalyptus, Cissus, Thymus, and Tamarindus spp. to control Phytophthora colocaciae, as well as application of Cymbopogon, Guieria, and Bauhinia spp. against Colletotrichum alatae lowered percentage rot compared to the control. These control agents were potent and they are strongly recommended.
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