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Title of Journal: Agroforest Syst

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Abbravation: Agroforestry Systems

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Springer Netherlands

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DOI

10.1007/bf00254108

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1572-9680

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Arbuscular mycorrhizal association of indigenous a

Authors: Mengsteab Hailemariam Emiru Birhane Zebene Asfaw Solomon Zewdie
Publish Date: 2013/07/19
Volume: 87, Issue: 6, Pages: 1261-1272
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Abstract

Tree species in agroforestry are important source of inoculum for companion agricultural crops Agroforestry trees can serve as a source of Arbuscular mycorrhiza AM inoculants to intercropped annuals We studied spore abundance root colonization of Albizia gummifera JF Gmel and Croton macrostachyus Hochst Ex Del trees and their effect on colonization of maize Soil and root samples were collected from field standing trees from under and outside the canopy of trees and maize crops in the main rainy season The number of spore count was significantly higher under the canopy of A gummifera 791/100 g of dry soil and C macrostachyus 877/100 g of dry soil trees than outside the canopy 547 and 588/100 g of dry soil respectively The level of root colonization of C macrostachyus 45  was higher than A gummifera 41  Root colonization of maize crops grown under the canopy of A gummifera and C macrostachyus trees was significantly higher than outside the canopy P  0001 Maize seedlings grown on nonsterilized soils collected under and outside the canopy of A gummifera and C macrostachyus trees recorded higher root colonization plant height shoot and root dry weight than grown on sterilized soils P  0001 The percentage of AM colonized roots of Zea mays seedlings was significantly positively correlated with the number of spore counts for field soils The rhizospheres of indigenous agroforestry perennial species are important source of inoculum for annuals The integration of perennials and annuals in an agroforestry system enhances the maintenance of soil quality in the tropics

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