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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/21817


Title: Maize and sorghum yields under tied ridges of fertilised sandy soils in semi-arid south-east lowveld of Zimbabwe
Issue Date: 31-Dec-1996
Publisher: African Crop Science Society
Citation: African Crop Science Journal (ISSN: 1021-9730) Vol 4 Num 2
Abstract: African Crop Science Journal Vol.5. No.2, pp. 197-206 1997 Maize and sorghum yields under tied ridges of fertilised sandy soils in semi-arid south-east lowveld of Zimbabwe E. Z. NYAKATAWA, M. BROWN and D. MARINGA Code Number: CS96057 Sizes of Files: Text: 26.5K Graphics: Tables (gif) - 64.7K ABSTRACT Growing maize and sorghum in furrows of 1.0 m and 1.5 m wide tied ridges with either 100 kg or 200 kg compound D ha^-1 (8:14:7 NPK, basal fertilizer) + 50 kg N ha^-1 top dressing were compared to the traditional farmers' practice of growing these crops on flat land without fertilizer. The crops were grown under rainfed conditions on sandy soils of Matibi 1 and Chivi communal areas in semi-arid agro-ecological regions IV and V in the south-east lowveld of Zimbabwe, from 1987/88 to 1989/90. Grain yield of maize in 1.0 m wide tied ridges was increased significantly by 22 to 85% over sowing on flat land and sorghum grain yield was increased by 18%. Application of inorganic fertilizer resulted in significant yield increases of 35 to 115% in maize grain, 59 to 200% in sorghum grain, 27 to 96% in maize stover and 63 to 161% in sorghum stover, compared to no fertilizer application. The benefits of growing crops in tied ridges and the incremental gross margins in Z$ ha^-1 of fertilizer application were more associated with monthly rainfall distribution than with the total summer rainfall. Key Words: Grain yield, incremental gross margins, inorganic fertilizer, rainfed, sandy soils, soil fertility, stover yield, tied ridges RESUME La culture de maos et de sorgho en sillons espaces de 1.0 et 1.5 m avec des billons lies et une fertilisation de 100 kg ou 200 kg par ha du compose D (8:14:7 NPK, engrais de fond) avec 50 kg N/ha d'engrais de couverture a ete comparee avec la culture traditionelle des fermiers i.e une culture sur terre plate sans engrais. La culture etait etablie de 1987/1988 jusque 1989/1990 dans de conditions de precipitation naturelle et sur des sols sableux de Matibil et des aires de la commune Chivi dans des regions agro-ecologiques semi arides IV et V dans les plaines du sud est de Zimbabwe. Le rendement des grains de maos sur des billons de 1,0 m augmentait significativement de 22 jusque 85% par rapport la culture sur terre plate, alors que le rendement de grains de sorgho augmentait de 18%. Une application d'engrais inorganique donnait une augmentation significative du rendement de grains de maos de 35 jusque 115%, de grains de sorgho de 59 jusque 200%, de fourrage de maos de 27 jusque 96% et de fourrage de sorgho de 63 jusqu' e 161%, par rapport e la culture sans engrais. L'avantage des cultures en billons lies et les marges beneficaires en Z$ pour l'engrais Etaient plutot associes la distribution de la prEcipitation mensuelle qu' e la precipitation totale en saison pluvieuse. Mots Cles: Rendement en grains, marges beneficaires, engrais inorganique, precipitation naturelle, sols sableux, fertilite du sol, rendement de fourrage, billons lies Copyright 1997 The African Crop Science Society
URI: http://hdl.handle.net/1807/21817
Other Identifiers: http://www.bioline.org.br/abstract?id=cs96057
Rights: Copyright 1996 African Crop Science Society
Appears in Collections:Bioline International Legacy Collection

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