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Zachée Ambang

Publications (12)

Assessing the Resistance of Three Tomato Varieties to Bacterial Wilt and Stem Rot

Zachée Ambang, Sully Mengue, Philippe Kosma, Charles Carnot Asseng & Jules Patrice Ngoh Dooh · Journal of Experimental Agriculture International · 2016

The aim of this study was to compare the level of resistance of two new hybrids (F1 Nadira and F1 Jaguar) with the popularly known variety Rio Grande against Pseudomonas solanacearum (causal agent of bacterial wilt) and Erwinia carotovora (responsible of stem rot) under natural c...

Open access Research Article 10.9734/AJEA/2016/22138

In vitro Antifungal Potential of Aqueous Seeds Extracts of Azadirachta indica and Thevetia peruviana against Phytophthora megakarya in Cameroon

Serge Bertrand Mboussi, Zachée Ambang, Angele Ndogho, Jules Patrice Ngoh Dooh & François Manga Essouma · Journal of Applied Life Sciences International · 2016

This study aims to evaluate the antifungal effects of aqueous extracts of Azadirachta indica (AEAI) and Thevetia peruviana (AETP) seeds taking it from a biological perspective under laboratory conditions. A randomized sample block design containing four treatments (T-: absolute c...

Open access Research Article 10.9734/JALSI/2016/23710

Phylogenetic and Gene Expression of Norsolorinic Acid Analysis of Aflatoxigenic Strains and Quantification of Aflatoxin B1 Levels into White Rice Grains in Kenya

Douksouna Youmma, Ronald Tonui, Andrew Neyerere, Brian Kipkoech & Zachée Ambang · Journal of Advances in Biology & Biotechnology · 2025

The most important pathogens of global significance in food security are mycotoxigenic fungi. Aflatoxigenic strains contamination in rice grains can lead to a health risk for consumers. Under appropriate conditions, aflatoxigenic fungi can grow and subsequently produce aflatoxins...

Open access Research Article 10.9734/jabb/2025/v28i11923

Arbuscular Mycorrhizal Fungi as a Biocontrol Agent for Angular Leaf Spot Disease of Common Beans (Phaseolus vulgaris L.)

Severin Nkenmegne, Souleymanou Adamou, Patrice Zemko Ngatsi, Christian Fabrice Gbaporo Gbaporo & Zachée Ambang · Annual Research & Review in Biology · 2024

Angular leaf spot disease caused by Phaeoisariopsis griseola is the most important disease which caused yield losses up to 80% of common beans. This study aims to induce natural defense of common bean against angular leaf spot disease by mycorrhization. The samples of Phaeoisario...

Open access Research Article 10.9734/arrb/2024/v39i92115

Morphological and Biochemical Characterization of Strains of Ralstonia solanacearum, Causal Agent of Bacterial Wilt in Tomatoes in Cameroon and Screening of Virulent Strains

Cylvain Patrick Mountseng, Hermine Mahot, Gertrude Membang, Serges Bertrand Mboussi, Didier Begoude & Zachée Ambang · Annual Research & Review in Biology · 2024

Ralstonia solanacearum is a major constraint in tomato production. The aim of this work was to identify the different biovars and races of R. solanacearum which infect tomato plants in Cameroon and determine the most virulent in a gnotobiotic environment. Thirty (30) samples were...

Open access Research Article 10.9734/arrb/2024/v39i52079

Contamination of Lettuce Plants Irrigated with Waste Water in Yaounde, Cameroon

Valerie Njitat Tsama, Godwill Mih Chewachong, Ives Magloire Kengne Noumsi, Wilfried Arsene Letah Nzouebet, Nkeze Nyochembeng & Zachée Ambang · Journal of Experimental Agriculture International · 2015

Aims: To evaluate the effects of various treatment combinations of water contaminated with faecal sludge on the growth and microbiological characteristics of lettuce (Lactuca sativa L.) cultivated around the river Avo'o discharged zone.                                            ...

Open access Research Article 10.9734/AJEA/2015/14517

Field Control of Maize Borers Using Aqueous Seed Extracts of Thevetia Peruviana (Pers.) K. Schum

Serge Bertrand Mboussi, Abdou Nourou Kone Nsangou, Alain Heu, Marlyse Zita Mboudou Belibi, Patrice Ngatsi Zemko, Jules Patrice Ngoh Dooh & Zachée Ambang · International Journal of Plant & Soil Science · 2022

Aims: In order to find an alternative to chemical control, the insecticidal potential of aqueous extracts of Thevetia peruviana seeds formulated at 16.66 g/l were tested in the field on the maize stalk borer species. Study Design:  The factorial design in subdivided plots or "spl...

Open access Research Article 10.9734/ijpss/2022/v34i2331597

In vitro Evaluation of the Fungicidal Potential of Aqueous and Methanolic Extracts of Thevetia peruviana on the Development of Rigidoporus lignosus, Causal Agent of White Root rot of Hevea brasiliensis

Serge Bertrand Mboussi, Alain Heu, Abdou Nourou Kone Nsangou, Martial Douanla Ajebe, Godswill Ntsomboh Ntsefong, Jules Patrice Ngoh Dooh & Zachée Ambang · Biotechnology Journal International · 2021

Aims: The objective of this work is to evaluate the effect of (aqueous (EAq) and methanolic (ME)) extracts of Thevetia peruviana on the in vitro development of Rigidoporus lignosus. Study Design: A synthetic fungicide (Onazol 100), two extracts at differents concentrations: C1 =...

Open access Research Article 10.9734/bji/2021/v25i130127

Characterization of Phytophthora infestans Isolates from Two Potato Varieties in the Highlands Agro-Ecological Zone of Cameroon

Sylvere Landry Dida Lontsi, Alain Heu, Joseph Djeugap Fovo, William Norbert Kuate Tueguem, Mbatkam Biamen, Fabrice Christian Gbaporo Gbaporo & Zachée Ambang · International Journal of Pathogen Research · 2020

Background: Late blight caused by Oomycete Phytophthora infestans remains a huge problem in potato production and one of the most severe crop diseases worldwide. In Cameroon, the populations characterization of this pathogen remain very little known. Aims: This study aims to char...

Open access Research Article 10.9734/ijpr/2020/v5i130126

Biodiversity of Aspergillus Species and Aflatoxin Contamination in Stored Cereals and Legumes in Cameroon

Landry Thierry Voukeng Dongmo, Hermine Mahot, Sylver Landry Lontsi Dida, Fabrice Christian Gbaporo Gbaporo, Patrice Ngatsi Zemko, Laurence Ngadjui Ngata, Nathalie Mbega Sanama, Zachée Ambang & Onana Boyomo · Journal of Advances in Microbiology · 2024

In cereal and legume grains, the presence of Aspergillus spp. and their aflatoxins induce huge economic losses, health problems and environmental problems during storage.  Thanks to their mycotoxins, Aspergillus, Penicillium and Fusarium cause losses of up to 25% of agricultural...

Open access Research Article 10.9734/jamb/2024/v24i12875

Efficacy of Methanolic and Aqueous Extracts of Thevetia peruviana (pers.) K. Schum on Growth of Phytophthora colocasiae Racib, Causal Agent of Taro Late Blight in Cameroon

Charles Essome Sale, Jules Patrice Ngoh Dooh, Alain Heu, William Kuate Tueguem, Dorothée Mvondo Nganti, Patrice Zemko Ngatsi, Godwill Chewachong & Zachée Ambang · Journal of Applied Life Sciences International · 2021

This study aims to evaluate the antifungal activities of methanolic and aqueous extracts of Thevetia peruviana seeds on the in vitro growth of Phytophthora colocasiae. A randomized sample block design containing four treatments (T-: absolute control, AE, ME and Callomil Plus at t...

Open access Research Article 10.9734/jalsi/2021/v24i430233

Antifungal Potential of Acetone and Ethyl Acetate Extracts of Thevetia peruviana on Development of Phytophthora colocasiae, Causal Agent of Late Blight of Taro (Colocasia esculenta (L.) Schott) from Three Agro-Ecological Zones of Cameroon

Charles Essome Sale, Doriane Tohoto Djuissi, Molo Thierry, Dorothée Nganti Mvondo, William Norbert Tueguem Kuate, Patrice Zemko Ngatsi, Hubert Bolie, Abdou Koné Nsangou, Alain Heu, Serge Bertrand Mboussi & Zachée Ambang · International Journal of Pathogen Research · 2022

Aims: This study was aimed to evaluate the antifungal activities of acetone and ethyl acetate extracts of Thevetia peruviana seeds on the in vitro growth of the fungus. Study Design: A randomized sample block design containing four treatments (T- = Negative control; T2= Ethyl ace...

Open access Research Article 10.9734/ijpr/2022/v11i2208