Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 356647
Title Yield trends in the long-term crop rotation with organic and inorganic fertilisers on Alisols in Mata (Rwanda)
Author(s) Rutunga, V.; Neel, H.
Source Biotechnology, Agronomy, Society and Enviroment 10 (2006)3. - ISSN 1370-6233 - p. 217 - 228.
Department(s) International Soil Reference and Information Centre
ICSU World Data Centre for Soils
ISRIC - World Soil Information
Publication type Refereed Article in a scientific journal
Publication year 2006
Abstract A crop rotation system with various species was established on Alisols at Mata grassland site, oriental side of Zaire-Nile Watershed Divide (CZN), Rwanda. Inorganic and organic fertilizers were applied in various plots under randomized complete blocs with three replicates. Crop yield data for each season were recorded over a 9-year period. Results showed that there was very low or no harvest in plots without fertilizers. In plots with fertilizers, the yield generally increased but remained relatively low, few crops and varieties adapted to the Mata ecology, only potatoes [Solanum tuberosum] and finger millet [Eleusine coracana] responded well to fertilizers. Liming was absolutely necessary to get any acceptable crop yield improvement with NPK. High rate of rich farmyard manure was efficient and its effect was recorded up to 4 seasons after four regular seasonal applications. Mata compost (C:N >25, 0.3 g P kg-1) had little beneficial effect. One, four and half, and eight tonnes of lime per ha applied 3 times in 8 years increased soil pH (in water) but not up to 6.5. It is concluded that to improve food production at the CZN area, selection of crops and varieties to fit ecological conditions and amending soils to fit crops must be considered.
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