气候变化领域集成服务门户(CCPortal): Can smallholder farmers buffer rainfall variability through conservation agriculture? On-farm practices and maize yields in Kenya and Malawi

CCPortal

DOI	10.1088/1748-9326/ab45ad
	Can smallholder farmers buffer rainfall variability through conservation agriculture? On-farm practices and maize yields in Kenya and Malawi
	Boillat S.; Jew E.K.K.; Steward P.R.; Speranza C.I.; Whitfield S.; Mkwambisi D.; Kiteme B.; Wambugu G.; Burdekin O.J.; Dougill A.J.
发表日期	2019
ISSN	17489318
卷号	14 期号:11
英文摘要	Reduced tillage, permanent ground cover and crop diversification are the three core pillars of Conservation Agriculture (CA). We assess and compare on-farm effects of different practices related to the three pillars of CA on maize yields under ENSO-driven rainfall variability in Kenya and Malawi. Reduced tillage practices increased yields per hectare by 250 kg on average in Malawi under below-average rainfall conditions and by 700 kg in Kenya under above-average rainfall, but did not have any significant effect on yields under below-average rainfall conditions in Kenya. Ground cover had a positive impact on yields in Malawi (dry conditions) but not in Kenya (both dry and wet conditions), where mixed crop and livestock systems limited this practice. Crop diversification had positive impacts in Kenya (both dry and wet conditions), where maize-legume crop rotation is practiced, but not in Malawi where landholdings are too small to allow rotation. Our findings suggest that isolated CA techniques can have positive effects on yields even after only a few years of practice under variable rainfall conditions. This strengthens empirical evidence supporting the value of CA in resilience building of agricultural systems, and suggests that both full and partial adoption of CA practices should be supported in areas where climate change is leading to more variable rainfall conditions. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Climate resilience; climate smart agriculture; conservation agriculture; El Niño,sub-Saharan Africa; ENSO; smallholder farming
语种	英语
scopus关键词	Agricultural robots; Climate change; Crops; Climate resilience; Conservation agricultures; ENSO; smallholder farming; Smart agricultures; Sub-saharan africa; Rain; agricultural practice; climate change; conservation status; crop rotation; crop yield; El Nino-Southern Oscillation; ground cover; maize; rainfall; smallholder; Kenya; Malawi; Sub-Saharan Africa; Zea mays
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154739
作者单位	Institute of Geography, University of Bern, Hallerstrasse 12, Bern, CH-3012, Switzerland; Interdisciplinary Global Development Centre, Department of Environment and Geography, University of York, Wentworth Way, Heslington, York, YO10 5NG, United Kingdom; Sustainability Research Institute, School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, United Kingdom; Lilongwe University of Agriculture and Natural Resources, PO Box 219, Lilongwe, Malawi; Center for Training and Integrated Research in ASAL Development, PO Box 144, Nanyuki, 10400, Kenya; BurdGIS, Wakefield, WF2 6JQ, United Kingdom
推荐引用方式 GB/T 7714	Boillat S.,Jew E.K.K.,Steward P.R.,et al. Can smallholder farmers buffer rainfall variability through conservation agriculture? On-farm practices and maize yields in Kenya and Malawi[J],2019,14(11).
APA	Boillat S..,Jew E.K.K..,Steward P.R..,Speranza C.I..,Whitfield S..,...&Dougill A.J..(2019).Can smallholder farmers buffer rainfall variability through conservation agriculture? On-farm practices and maize yields in Kenya and Malawi.Environmental Research Letters,14(11).
MLA	Boillat S.,et al."Can smallholder farmers buffer rainfall variability through conservation agriculture? On-farm practices and maize yields in Kenya and Malawi".Environmental Research Letters 14.11(2019).