A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity

Intensification of agricultural systems in sub-Saharan Africa (SSA) is considered a pre-condition for alleviation of rural poverty. Conservation Agriculture (CA) has been promoted to achieve this goal, based on three principles: minimum tillage, soil surface cover, and diversified crop rotations. CA...

Full description

Bibliographic Details
Main Authors: Vanlauwe, Bernard, Wendt, J., Giller, Kenneth E., Corbeels, Marc, Gerard, Bruno G., Nolte, C.
Format: Journal Article
Language:Inglés
Published: Elsevier 2014
Subjects:
Online Access:https://hdl.handle.net/10568/76063
_version_ 1855530025774743552
author Vanlauwe, Bernard
Wendt, J.
Giller, Kenneth E.
Corbeels, Marc
Gerard, Bruno G.
Nolte, C.
author_browse Corbeels, Marc
Gerard, Bruno G.
Giller, Kenneth E.
Nolte, C.
Vanlauwe, Bernard
Wendt, J.
author_facet Vanlauwe, Bernard
Wendt, J.
Giller, Kenneth E.
Corbeels, Marc
Gerard, Bruno G.
Nolte, C.
author_sort Vanlauwe, Bernard
collection Repository of Agricultural Research Outputs (CGSpace)
description Intensification of agricultural systems in sub-Saharan Africa (SSA) is considered a pre-condition for alleviation of rural poverty. Conservation Agriculture (CA) has been promoted to achieve this goal, based on three principles: minimum tillage, soil surface cover, and diversified crop rotations. CA originated in regions where fertilizer is commonly used and crop productivity is high, ensuring an abundance of crop residues. By contrast, crop yields are generally low in SSA and organic residues in short supply and farmers face competing demands for their use. Since minimal tillage without mulch commonly results in depressed yields, the use of fertilizer to enhance crop productivity and organic residue availability is essential for smallholder farmers to engage in CA. This is especially true since alternative ways to increase organic matter availability have largely failed. A case study from Kenya clearly demonstrates how fertilizer increases maize stover productivity above thresholds for minimal initial soil cover required for initiating CA (about 3 tonne ha?1). We conclude that strategies for using CA in SSA must integrate a fourth principle – the appropriate use of fertilizer – to increase the likelihood of benefits for smallholder farmers.
format Journal Article
id CGSpace76063
institution CGIAR Consortium
language Inglés
publishDate 2014
publishDateRange 2014
publishDateSort 2014
publisher Elsevier
publisherStr Elsevier
record_format dspace
spelling CGSpace760632025-01-27T15:00:52Z A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity Vanlauwe, Bernard Wendt, J. Giller, Kenneth E. Corbeels, Marc Gerard, Bruno G. Nolte, C. mulch soil fertility smallholders farmers Intensification of agricultural systems in sub-Saharan Africa (SSA) is considered a pre-condition for alleviation of rural poverty. Conservation Agriculture (CA) has been promoted to achieve this goal, based on three principles: minimum tillage, soil surface cover, and diversified crop rotations. CA originated in regions where fertilizer is commonly used and crop productivity is high, ensuring an abundance of crop residues. By contrast, crop yields are generally low in SSA and organic residues in short supply and farmers face competing demands for their use. Since minimal tillage without mulch commonly results in depressed yields, the use of fertilizer to enhance crop productivity and organic residue availability is essential for smallholder farmers to engage in CA. This is especially true since alternative ways to increase organic matter availability have largely failed. A case study from Kenya clearly demonstrates how fertilizer increases maize stover productivity above thresholds for minimal initial soil cover required for initiating CA (about 3 tonne ha?1). We conclude that strategies for using CA in SSA must integrate a fourth principle – the appropriate use of fertilizer – to increase the likelihood of benefits for smallholder farmers. 2014-01 2016-07-11T08:41:39Z 2016-07-11T08:41:39Z Journal Article https://hdl.handle.net/10568/76063 en Limited Access Elsevier Vanlauwe, B., Wendt, J., Giller, K., Corbeels, M., Gerard, B. & Nolte, C. (2014). A fourth principle is required to define conservation agriculture in sub-Saharan Africa: the appropriate use of fertilizer to enhance crop productivity. Field Crops Research, 155, 10-13.
spellingShingle mulch
soil fertility
smallholders
farmers
Vanlauwe, Bernard
Wendt, J.
Giller, Kenneth E.
Corbeels, Marc
Gerard, Bruno G.
Nolte, C.
A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity
title A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity
title_full A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity
title_fullStr A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity
title_full_unstemmed A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity
title_short A fourth principle is required to define conservation agriculture in subSaharan Africa: the appropriate use of fertilizer to enhance crop productivity
title_sort fourth principle is required to define conservation agriculture in subsaharan africa the appropriate use of fertilizer to enhance crop productivity
topic mulch
soil fertility
smallholders
farmers
url https://hdl.handle.net/10568/76063
work_keys_str_mv AT vanlauwebernard afourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT wendtj afourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT gillerkennethe afourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT corbeelsmarc afourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT gerardbrunog afourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT noltec afourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT vanlauwebernard fourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT wendtj fourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT gillerkennethe fourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT corbeelsmarc fourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT gerardbrunog fourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity
AT noltec fourthprincipleisrequiredtodefineconservationagricultureinsubsaharanafricatheappropriateuseoffertilizertoenhancecropproductivity