ISSN: 0041-3216

ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 60 Number 4
Research Papers
Varietal characteristics and nitrogen fixation in cowpea
Twelve cowpea varieties were evaluated in a time-phase study for nodulation and dry matter and N accumulation. Consistent differences were observed between varieties for all parameters. Significant relation- ships were observed between total N and shoot weight, total N and nodule weight and total N and seed yield. Top growth appeared to have a significant effect on N fixation and may be a valuable criterion in breeding for increased N fixation in cowpea.
Keywords: Nitrogen fixation; Cowpea; Yield