John Mbugri Azasiba

Optimizing Plant Density and NPK Fertilization for Sesame Yield in Ghana’s Sudan Savannah

Aziiba Emmanuel Asibi, Yao Guo, Issah Sugri, Listowel Aditwin Akologo, Richard Dormatey & John Mbugri Azasiba · Journal of Experimental Agriculture International · 2026

Background: Sesame productivity in Ghana’s Sudan savannah is constrained by suboptimal plant density and fertilizer management, highlighting the need to identify optimum plant density–NPK fertilizer combinations that maximize yield and resource-use efficiency under nutrient-limit...

Open access Research Article 10.9734/jeai/2026/v48i64290

Integrated Management of Sweet Potato Weevil (Cylas spp.) Based on Planting Material Treatment and Spray Regime in Northern Ghana

Issah Sugri, Francis Kusi, Eli Gaveh, Matthew Akalagtota Anafo, Kwabena Acheremu, George Yakubu Mahama, Bashiru Haruna, Iddrisu Yahaya, Yussif Baba Kassim, Fulera Tahiru, Peter Quandahoh, Rashidatu Abdulai, Ahmed Seidu, Jerry Asalma Nboyine, Julius Yirzagla, John Mbugri Azasiba, Mutari Abubakari, Issah Alidu Abukari, Deborah Aya Gumanga & Mohammed Mujitaba Dawuda · Journal of Experimental Agriculture International · 2026

Aims: The sweet potato weevil (Cylas spp.) exerts the most biotic threat in sweet potato production in most countries. A dual challenge exists regarding integrated management of the Cylas spp. in Ghana, namely, the wide use of farmer-saved planting material with higher infestatio...

Open access Research Article 10.9734/jeai/2026/v48i13983