Nodulation, dry matter and nitrogen accumulation of mucuna (Mucuna pruriens var. Utilis) in response to bradyrhizobia inoculation
2006
Kumaga, F.K. (Ghana Univ., Legon (Ghana). Dept. of Crop Science) | Ofori, K. | Marfo-Ahenkorah, E.
Nodulation, dry matter and nitrogen accumulation of two mucuna accessions in association with introduced bradyrhizobia were assessed on two forest soils. Nodulation started after 40 days after planting (DAP), following drastic reduction in percent nitrogen (%N) in plant. Significant (P less than 0.05) accession x inoculation status interactions was present for nodule number, nodule dry weight and shoot dry weight. Early maturing accession, `GH1746' produced significantly higher number of nodules and dry matter than uninoculated plants on both soils, but the late maturing accession, `GH1745', did not respond to inoculation on `Kokofu' soil. The relative change in dry matter between 80 DAP and 120 DAP was higher for `GH1746' than 'GH1745'. For inoculated `GH1746', there were increases in %N between 80 and 120 DAP of 31% and 36% on `Nzima' and `Kokofu' soil, respectively, but no such increases were present in uninoculate d `GH1746' nor in `GH1745', both inoculated and uninoculated.
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