Study of Diversity of Nitrogen Fixation Bacteria of Cowpea Under Soil Sample Canopies of Acacia Nilotica, Albizzia Labbeck and Azadirachta Indica

Student: Usman Musa (Project, 2025)
Department of Biology
Umaru Musa Yaradua University, Katsina, Katsina State

Abstract

*Abstract:* This study investigates the diversity of nitrogen-fixing bacteria associated with cowpea under the canopies of three tree species: Acacia nilotica, Albizzia lebbeck, and Azadirachta indica. Using a combination of molecular and microbiological techniques, we isolated and characterized nitrogen-fixing bacteria from cowpea nodules. Our results show that the tree species influences the diversity and abundance of nitrogen-fixing bacteria, with distinct bacterial communities associated with each tree species. The findings have implications for sustainable agriculture practices, soil fertility management, and biodiversity conservation.

Keywords
bacteria diversity cowpea nitrogen-fixing species under canopies acacia nilotica albizzia
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