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Abstract

The shrub species Tithonia diversifolia is widely distributed along farm boundaries in the humid and subhumid tropics of Africa. Green biomass of tithonia has been recognized as an effective source of nutrients for lowland rice (Oryza sativa) in Asia and more recently for maize (Zea mays) and...

Author(s)
Jama, B.; Palm, C. A.; Buresh, R. J.; Niang, A.; Gachengo, C.; Nziguheba, G.; Amadalo, B.
Citation
Agroforestry Systems, 2000, 49, 2, pp 201-221
Abstract

Trees have a different impact on soil properties than annual crops, because of their longer residence time, larger biomass accumulation, and longer-lasting, more extensive root systems. In natural forests nutrients are efficiency cycled with very small inputs and outputs from systems. In most...

Author(s)
Sanchez, P. A.; Buresh, R. J.; Leakey, R. R. B.
Citation
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 1997, 352, 1356, pp 949-961
Abstract

The authors hypothesize that trees can rapidly root into subsoil and capture NO3 that may have accumulated in the subsoil horizons of agricultural soils of high anion sorption capacity. The vertical distribution of root length and inorganic N (NO3 and NH4) to 3.95-m soil depth was therefore...

Author(s)
Jama, B.; Buresh, R. J.; Ndufa, J. K.; Shepherd, K. D.
Citation
Soil Science Society of America Journal, 1998, 62, 1, pp 280-286

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