ALLELOPATHY IN AGROFORESTRY SYSTEMS - THE EFFECTS OF LEAF EXTRACTS OF CUPRESSUS-LUSITANICA AND 3 EUCALYPTUS SPP ON 4 ETHIOPIAN CROPS

被引：77

作者：

LISANEWORK, N

MICHELSEN, A

机构：

[1] Biology Department, Addis Ababa University, Addis Ababa

[2] Institute of Plant Ecology, University of Copenhagen, Copenhagen K, DK-1353

来源：

AGROFORESTRY SYSTEMS | 1993年 / 21卷 / 01期

关键词：

CICER-ARIETINUM; ERAGROSTIS TEF; PISUM-SATIVUM; TROPICAL TREE PLANTATIONS; ZEA-MAYS;

D O I：

10.1007/BF00704926

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The potential allelopathic effect of Cupressus lusitanica, Eucalyptus globulus, E. camaldulensis and E. saligna on seed germination, radicle and seedling growth was investigated with four crops: Cicer arietinum (chickpea), Zea mays (maize), Pisum sativum (pea) and Eragrostis tef (teff). Aqueous leaf extracts of all the tree species significantly reduced both germination and radicle growth of the majority of the crops mostly starting from concentrations of 1% or 2.5%. The shoot and root dry weight increase of the crops was significantly reduced after 10 weeks treatment with leaf extracts. Among the four crops, chickpea and teff were most susceptible with respect to germination, and teff with respect to growth. From the overall data the leaf extracts of the four tree species can be arranged according to increasing allelopathic potential: C lusitanica, E. globulus, E. saligna and E. camaldulensis. It is suggested that the planting of E. camaldulensis and E. saligna in integrated land use systems should be minimized, whereas the use of C lusitanica and E. globulus seems less environmentally damaging in this respect.

引用

页码：63 / 74

页数：12

共 26 条

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