Article Sidebar
Published:
May 11, 2025Keywords:
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
NAJ supports free online communication and exchange of knowledge as the most effective way of ensuring that the fruits of research and development practice are made widely available. It is therefore committed to open access, which, for authors, enables the widest possible dissemination of their findings and, for readers, increases their ability to discover pertinent information. The Journal adopts and uses the CC: BY license and is open access. This license lets others distribute, remix, adapt, and build upon your work, even commercially, as long as they credit you for the original creation. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the Journal’s published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Copyright for articles published in this Journal is retained by the Journal.
Main Article Content
Cowpea Response to Organic Manure and Adaptability to Derived/Wet Savannah Ecological Zone
Abstract
This trial was carried out on two sites during the rainy season of the year 2022. The main objective was to introduce a well-adapted cowpea variety to the wet Savannah ecology. To achieve simultaneous research, technology transfer, and adoption, three contact farmer's fields in each location were used for the experiment and represented 3 replications. The trial was conducted as a 4×3×2 experiment factorial design, with treatments assigned to the plots in a Randomized block design. Cowpea varieties were the first, the second factor was sowing date, and the third factor was sources of N2 (i Compost manure & ii, rhizobium inoculated seed). To achieve organic production standards, Tobacco leaf extract was used for pest control, rhizobium seed inoculation, and compost manure was used in place of starter N2. Manual weeding was also used instead of chemical weed control. Cowpea cultivar/Ife Brown× sowing date (30/09/2022) recorded the highest nodule count. Some of the other various growth and development parameters estimated in the trial resulted in the highest grain yield of 1043.1kg/ha. The use of inoculated Ife Brown cowpea seeds to be sown on 30 /09 was recommended for the wet Savannah zone of Kwara State.
