Article citationsMore>>
Twomlow, S, Rohrbach, D, Dimes, J, Rusike, J, Mupangwa, W, Ncube, B, Hove, L, Moyo, M, Mashingaidze, N and Maphosa, P (2008b). Micro-dosing as a pathway to Africa’s Green Revolution: evidence from broad-scale on-farm trials. Nutrient Cycling in Agroecosystems 88 (1): 3-15.
has been cited by the following article:
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TITLE:
Measuring and simulating maize (Zea mays L.) yield responses to reduced tillage and mulching under semi-arid conditions
AUTHORS:
Walter Mupangwa, John Dimes, Sue Walker, Stephen Twomlow
KEYWORDS:
Nitrogen-Modelling-Planting
Basins-Semi Arid-Variable Rainfall-Zimbabwe
JOURNAL NAME:
Agricultural Sciences,
Vol.2 No.3,
August
12,
2011
ABSTRACT: Rainfed smallholder agriculture in semi-arid environments of sub-Saharan Africa faces many challenges. Productivity of the smallholder agricultural systems has been on the decline in recent years. Conservation agriculture practices have a potential of steering the smallholder agricultural systems of sub-Saharan Africa to greater and more sustainable levels. This study was designed to calibrate the APSIM model so that it could be used as a tool for understanding the long term impact of conservation agriculture techniques (mulching, tine ripping and planting basins) on the productivity of smallholder systems under semi-arid conditions. The APSIM model predicted reasonably well the seasonal and mulching effects on maize production on sand and clay soils. Under these semi-arid conditions the use of 10 kg.N.ha–1 is preferable under both conventional and basin tillage systems. Planting basins offer a better chance of getting maize grain yield than the conventional system in southern Zimbabwe at N quantities ranging from 0 kg.ha–1 to 52 kg.ha–1. This modelling exercise suggested that smallholder farmers are still prone to complete crop failure in some years despite the use of available conservation agriculture systems.
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