Intensification of dryland farming in Mali through mechanisation of sowing,fertiliser application and weeding |
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Authors: | Jens B Aune Adama Coulibaly Kamkam Woumou |
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Institution: | 1. Department of International Environment and Development Studies, Norwegian University of Life Sciences, ?s, Norway;2. Institute d’Economie Rural, Bamako, Mali |
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Abstract: | This study focuses on the role of mechanised sowing and weeding in combination with seed priming and fertiliser microdosing in Mali. Mechanised sowing and weeding were based on using a combined donkey-drawn planter/weeder and a motorised planter/weeder. The research methods included studies of seed delivery in manual and mechanised sowing, field experiments on different levels of mechanization/intensification, labour studies on mechanisation and an economic assessment of the different levels of intensification.The average sorghum grain yield across three years increased by 352 kg ha?1 (43.7% increase) by combining mechanisation with seed priming and microdosing of 0.2 g NPK 15-15-15 fertiliser per pocket compared to a control with manual sowing but without seed priming and microdosing. The labour demand (sowing and weeding) for manual, donkey-drawn and motorised operations was 184, 67 and 47 hours ha?1, respectively.An economic analysis showed that the donkey-drawn planter/weeder is the appropriate mechanisation below six ha while above this land size it becomes increasingly interesting for the farmers to invest in a motorised planter. The use of mechanisation will result in earlier and uniform crop establishment, facilitate microdosing application, timelier weeding, higher yields, better economic return and reduced labour demand. |
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Keywords: | Sorghum seed priming microdosing planter weeder labour-use appropriate mechanisation |
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