Arid
DOI10.1023/A:1006451129811
Tree/crop complementarity in an arid zone runoff agroforestry system in northern Kenya
Droppelmann, KJ; Ephrath, JE; Berliner, PR
通讯作者Droppelmann, KJ
来源期刊AGROFORESTRY SYSTEMS
ISSN0167-4366
出版年2000
卷号50期号:1页码:1-16
英文摘要

We tested the hypothesis that shallow-rooted crops and deep-rooted trees will share the available water in a complementary manner, when grown together, in a field trail in the Turkana district of northern Kenya during 1994 to 1996. Such studies have been few in dryland agroforestry. The effects of two different Acacia saligna (Labill.) H. Wendl. tree planting densities (2500 and 833 trees per ha), tree pruning (no pruning vs. pruning) and annual intercrops (no intercrop vs. intercrop) on total biomass production and their interactions were tested. In 1996 Sorghum bicolor (L.) Moench was used during the first vegetation period and Vigna unguiculata (L.) Walp. during the second. We used naturally generated runoff water for irrigation to supplement low rainfall amounts typical for the area. High biomass production (> 13 t ha(-1) over a two year period) was observed irrespective of intercropping of pruned trees or sole tree stands. Although the pruning treatment reduced total tree biomass yields by a quarter, the introduction of annual intercrops after the pruning of trees outweighed this loss. The yields of the intercrops in the pruned tree treatments were similar to their yields when grown as monocrops. The calculation of land equivalent ratios showed overyielding for intercropped, pruned systems. The high values for LER (1.36 at low and 1.47 at high density of trees) indicate that there is complementarity in resource use between the different species.


英文关键词Acacia saligna intercropping pruning resource capture
类型Article
语种英语
国家Israel
收录类别SCI-E
WOS记录号WOS:000089053100001
WOS关键词SEMIARID KENYA ; WATER ; ROOT ; DESIGN ; YIELD ; LIGHT ; MAIZE ; TREE
WOS类目Agronomy ; Forestry
WOS研究方向Agriculture ; Forestry
来源机构Ben-Gurion University of the Negev
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/138441
作者单位(1)Jacob Blaustein Inst Desert Res, Wyler Lab, Wyler Dept Dryland Agr, IL-84990 Sede Boqer, Israel
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GB/T 7714
Droppelmann, KJ,Ephrath, JE,Berliner, PR. Tree/crop complementarity in an arid zone runoff agroforestry system in northern Kenya[J]. Ben-Gurion University of the Negev,2000,50(1):1-16.
APA Droppelmann, KJ,Ephrath, JE,&Berliner, PR.(2000).Tree/crop complementarity in an arid zone runoff agroforestry system in northern Kenya.AGROFORESTRY SYSTEMS,50(1),1-16.
MLA Droppelmann, KJ,et al."Tree/crop complementarity in an arid zone runoff agroforestry system in northern Kenya".AGROFORESTRY SYSTEMS 50.1(2000):1-16.
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