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Philippe Kosma

Publications (4)

Water Stress Tolerance at Different Growth Stages in Cowpea [Vigna unguiculata (L.) Walp.] in the Far North Region of Cameroon

Linda Charlotte Kewang Akiki, Philippe Kosma & Liliane Iyalé · Asian Research Journal of Agriculture · 2026

Background: Cowpea is a protein-rich legume essential for food security in sub-Saharan Africa, but its productivity is increasingly constrained by drought and irregular rainfall patterns. Objective: To address intra-seasonal drought episodes when they occur at critical stages of...

Open access Research Article 10.9734/arja/2026/v19i3862

Repeatability and Stability of Agromorphological Characteristics of Onion Cultivars (Allium cepa L.) in the Sudano-Sahelian Zone of Cameroon

Moutsavara Gabriel, Yaya Haman, Philippe Kosma & Noubissié Tchiagam Jean Baptiste · Asian Research Journal of Agriculture · 2025

The variability of environmental conditions leads to significant fluctuations in the agromorphological performance of cultivars. To improve the productivity and stability of varieties, it is essential to assess the repeatability and stability of agromorphological traits. This stu...

Open access Research Article 10.9734/arja/2025/v18i4783

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

Spécies Diversity and Physiological Characterization of Fusarium spp. Isolates Causing Potato (Solanum tuberosum L.) Fusariosis (Far-North, Cameroon)

Boydoul Fréderic Ulrich, Sobda Gonne, Fankou Dougouan Merline Yoyo, Abdoul Madjerembe, Rapmo Kononer Serge, Eloa Seussemaga, Metsena Pierre, Ngoh Dooh Jules Patrice & Philippe Kosma · International Journal of Pathogen Research · 2023

Introduction: Potato production in the Far North Region, Cameroon is hampered by a wide range of fungi of the genus Fusarium. Aims: The aim of this work was to isolate and conduct physiological characterization of Fusarium spp. isolates responsible for potato Fusarium disease in...

Open access Research Article 10.9734/ijpr/2023/v12i1215