Effect of phosphorus fertilisation on legume nodule formation

  • J N Gitari
  • J G Mureithi


The response of legumes to phosphorus was tested in the upper midland 3 agroecological zone in a humic Nitisol at Karurina Location of Embu District in central Kenya. The legumes tested were Mucuna pruriens, Canavalia ensiformis Glycine max., Crotalaria ochroleuca and Lablab purpureus. A split plot design was used in which 17 kg/ha phosphorus was applied to half of the plot and the remainder was planted without any P. Nodulation and biomass assessment were conducted at the respective flowering stages for each of the legumes tested, The results revealed that all legume species tested formed effective nodules at either the tap root or the lateral roots. Crotalaria showed the highest level of nodule formation whereas Canavalia formed one or no nodules per plant. Mucuna showed the highest level (4.13 t/ha) of biomass accumulation while Canavalia gave the lowest (0.56 t/ha) amount of biomass. Addition of phosphorus did not affect nodulation or biomass accumulation in any of the legume species tested.

How to Cite
Gitari, J., & Mureithi, J. (2008). Effect of phosphorus fertilisation on legume nodule formation. East African Agricultural and Forestry Journal, 69(1&2). Retrieved from https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/61