Article Sidebar
Published:
Oct 29, 2019Keywords:
Article Details
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
Effect of crop spacing regimes on weed growth and performance of cowpea (Vigna unguiculata (L.) in a humid zone of South-Eastern Nigeria
Abstract
Field experiment was conducted at the Department of Crop and Soil Science Demonstration Plot, Faculty of Agriculture, University of Port Harcourt, Nigeria between August and December 2017 to determine the effect of crop spacing regimes on weed growth and cowpea variety IT90K-277-2 performances in the humid zone of Southeastern Nigeria. The treatments consist of three crop spacing regimes: 75cm x 25cm, 75cmx 30cm and 75cm x 35 cm. The treatments were laid out in a randomized complete block design (RCBD) and replicated four times. Results showed that crop spacing regimes had no significant (P > 0.05) effect on weed growth, in all the growth and yield traits of cowpea data assessed, except for stand counts. Therefore, intermediate spacing (75cm x 30cm) or wider spacing (75cm x 35cm) at two stands per hill is recommended to farmers for better weed control and higher grain yield of cowpea in the humid zone of Southeastern Nigeria because either of the spacing tends to be more economical than close spacing, since, no seeds were wasted. However, the study need to the repeated with economic analysis of the crop spacing regime as a variable to revalidate the results obtained from this study.
Keywords: Cowpea, humid zone, spacing, variety IT90K-277-2, and weed growth
