Nitrogen contribution of Leucaena/Rhizobium symbiosis to soil and a subsequent maize crop

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dc.creatorSanginga, N.
dc.creatorMulongoy, K.
dc.creatorAyanaba, A.
dc.date1988
dc.date2025-07-29T12:43:23Z
dc.date2025-07-29T12:43:23Z
dc.date.accessioned2026-06-27T16:05:10Z
dc.descriptionThe nitrogen contribution from the shoot and root system of symbiotically grown leucaena was evaluated in a field experiment on an Alfisol at IITA in Southern Nigeria. Maize in plots that received prunings from inoculated leucaena contained more N and grain yield was increased by 1.9 t.ha.−1. Large quantities of nitrogen were harvested with leucaena prunings (300 kg N ha−1 in six months) but the efficiency of utilization of this nitrogen by maize was low compared to inorganic N fertilizer (ammonium sulphate) at 80 kg N ha−1. Maize yield data indicated that nitrogen in leucaena prunigs was 34 and 45% as efficient as 80 kg N ha−1 of (NH4)2SO4 for uninoculated and inoculated plants with Rhizobium IRc 1045, respectively. In plots where the prunings were removed, the leaf litter and decaying roots and nodules contributed N equivalent of 32 kg ha−1. Twenty-five kg ha−1 was the inorganic N equivalent from nitrogen fixed symbiotically by leucaena when inoculated with Rhizobium strain IRc 1045. Application of prunings from inoculated leucaena resulted in higher soil ogranic C, total N, pH and available NO3.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/175856
dc.identifier.urihttp://hdl.handle.net/123456789/122085
dc.languageen
dc.rightsLimited Access
dc.sourceSanginga, N., Mulongoy, K. & Ayanaba, A. (1988). Nitrogen contribution of Leucaena/Rhizobium symbiosis to soil and a subsequent maize crop. Plant and Soil, 112, 137-141.
dc.subjectalfisol
dc.subjectleucaena leucocephala
dc.subjectinoculation
dc.subjectmaize
dc.subjectnitrogen fertilizers
dc.subjectnodule
dc.subjectrhizobium
dc.titleNitrogen contribution of Leucaena/Rhizobium symbiosis to soil and a subsequent maize crop
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)