Growing Tithonia Diversifolia for Fertility Restitution of Technosols from Coltan Mined Soils of Gatumba, Rwanda
Abstract
115 words
The present study was conducted to evaluate the capacity of
Tithonia diversifolia to mobilise nutrients and the ability of
technosols to produce tithonia biomass for fertility restitution.
A greenhouse pot experiment was conducted and tithonia green
manure (T) was applied at 5 t dry matter (DM) ha-1 alone and
in combination with TSP and ammonium sulphate (AS). After
three months, Tithonia was harvested and plant tissues and soils
were analysed in Rwanda and in Germany. Results showed
that despite the poor nutrients status of pegmatite, it could give
more tithonia biomass than its mixture with Lixisol Bt when
amended. The accumulation of nutrients was found to be even
higher in tithonia biomass produced on pegmatite.
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