Arid
DOI10.1017/S001447971400060X
RESTORING CROPLAND PRODUCTIVITY AND PROFITABILITY IN NORTHERN ETHIOPIAN DRYLANDS AFTER NINE YEARS OF RESOURCE-CONSERVING AGRICULTURE
Araya, Tesfay1,2; Nyssen, Jan3; Govaerts, Bram4; Baudron, Frederic5; Carpentier, Louise6; Bauer, Hans7; Lanckriet, Sil3; Deckers, Jozef7; Cornelis, Wim M.6
通讯作者Araya, Tesfay
来源期刊EXPERIMENTAL AGRICULTURE
ISSN0014-4797
EISSN1469-4441
出版年2016
卷号52期号:2页码:165-187
英文摘要

Long-term in situ soil and water conservation experiments are rare in sub-Saharan Africa, particularly in Eastern Africa. A long-term experiment was conducted (2005-2013) on a Vertisol to quantify the impacts of resource-conserving agriculture (RCA) on runoff, soil loss, soil fertility and crop productivity and economic profitability in northern Ethiopia. Two RCA practices were developed from traditional furrow tillage practices: (i) derdero+ (DER+) and terwah+ (TER+). DER+ is a furrow and permanent raised bed planting system, tilled once at planting time by refreshing the furrow and 30% of crop residue is retained. TER+ is ploughed once at planting, furrows are made at 1.5 m intervals and 30% crop residue is retained. The third treatment was a conventional tillage (CT) with a minimum of three tillage operations and complete removal of crop residues. Wheat, teff, barley and grass pea crops were grown in rotation. Runoff, and soil and nutrient loss were measured in plastic sheet-lined collector trenches. Significantly different (P < 0.05) runoff coefficients (%) and soil losses (t ha(-1)) averaged over 9 yrs were 14 and 3, 22 and 11 and 30 and 17 for DER+, TER+ and CT, respectively. Significant improvements in crop yield and gross margin were observed after a period of three years of cropping This study demonstrated that RCA systems in semi-arid agro-ecosystems constitute a field rainwater conservation and soil fertility improvement strategy that enhances crop productivity and economic profitability. Adoption of RCA systems (DER+ and TER+) in the study area requires further work to improve smallholder farmers’ awareness on benefits, to guarantee high standards during implementation and to design appropriate weed management strategies.


类型Article
语种英语
国家South Africa ; Ethiopia ; Belgium ; Mexico
收录类别SCI-E
WOS记录号WOS:000378152200002
WOS关键词CONSERVATION AGRICULTURE ; LAND MANAGEMENT ; TILLAGE ; HIGHLANDS ; EFFICIENCY ; AFRICA
WOS类目Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/192910
作者单位1.Univ Ft Hare, Dept Agron, PBX1314, ZA-5700 Alice, South Africa;
2.Mekelle Univ, Dept Crop & Hort Sci, POB 231, Mekelle, Ethiopia;
3.Univ Ghent, Dept Geog, Krijgslaan 281 S8, B-9000 Ghent, Belgium;
4.CIMMYT, Int Maize & Wheat Improvement Ctr, AP 6-641, Mexico City 06600, DF, Mexico;
5.CIMMYT, Int Maize & Wheat Improvement Ctr, POB 5689, Addis Ababa, Ethiopia;
6.Univ Ghent, Dept Soil Management, Coupure Links 653, B-9000 Ghent, Belgium;
7.Katholieke Univ Leuven, Dept Earth & Environm Sci, Celestijnenlaan 200E, B-3001 Heverlee, Belgium
推荐引用方式
GB/T 7714
Araya, Tesfay,Nyssen, Jan,Govaerts, Bram,et al. RESTORING CROPLAND PRODUCTIVITY AND PROFITABILITY IN NORTHERN ETHIOPIAN DRYLANDS AFTER NINE YEARS OF RESOURCE-CONSERVING AGRICULTURE[J],2016,52(2):165-187.
APA Araya, Tesfay.,Nyssen, Jan.,Govaerts, Bram.,Baudron, Frederic.,Carpentier, Louise.,...&Cornelis, Wim M..(2016).RESTORING CROPLAND PRODUCTIVITY AND PROFITABILITY IN NORTHERN ETHIOPIAN DRYLANDS AFTER NINE YEARS OF RESOURCE-CONSERVING AGRICULTURE.EXPERIMENTAL AGRICULTURE,52(2),165-187.
MLA Araya, Tesfay,et al."RESTORING CROPLAND PRODUCTIVITY AND PROFITABILITY IN NORTHERN ETHIOPIAN DRYLANDS AFTER NINE YEARS OF RESOURCE-CONSERVING AGRICULTURE".EXPERIMENTAL AGRICULTURE 52.2(2016):165-187.
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