Distribution of arbuscular mycorrhizal fungi spores in soils of smallholder agroforestry and monocultural coffee systems in southwestern Ethiopia

Muleta Diriba; Assefa Fassil; Nemomissa Sileshi; Granhall Ulf

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Distribution of arbuscular mycorrhizal fungi spores in soils of smallholder agroforestry and monocultural coffee systems in southwestern Ethiopia

机译：埃塞俄比亚西南部小农农林和单种咖啡系统土壤中的丛枝菌根真菌孢子分布

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Arbuscular mycorrhizal fungi (AMF) are associated with the root system of coffee (Coffea arabica L.) plants, but their distribution in smallholder agroforestry and monocultural coffee systems is not well known. This study investigates the spatial distribution of AMF spores in a field study in southwestern Ethiopia. Soil samples from different depths (0-50 cm) were collected under the tree canopies of Acacia abyssinica, Albizia gummifera, Ficus sur, Ficus vasta and randomly selected unshaded coffee plants at different sampling points (canopy base, radius, edge and outside canopy). Significantly higher AMF spore densities were recorded at canopy bases and at 0-30 cm soil depth. Spore populations were found to belong to five genera: Acaulospora, Entrophospora, Glomus, Gigaspora and Scutellospora, with Glomus and Acaulospora dominating. Sampling points, sites and depths, shade tree species and shade tree/coffee plant age affected AMF spore density. Agroforestry practices including the use of leguminous shade trees effectively maintained AMF numbers in soils even at depth compared with unshaded coffee plants (monocultures).

机译：丛枝菌根真菌（AMF）与咖啡（Coffea arabica L.）植物的根系相关，但是在小农农林和单种咖啡系中的分布并不为人所知。这项研究调查了埃塞俄比亚西南部地区AMF孢子的空间分布。从不同深度（0-50厘米）的土壤样品中收集了相思树，刺槐，无花果，无花果树的树冠，并在不同采样点（树冠基部，半径，边缘和外部树冠）随机选择了未遮盖的咖啡植物。在冠层基部和0-30厘米土壤深度处记录到明显更高的AMF孢子密度。孢子种群被发现属于五个属：棘孢属，对虾孢属，Glomus，Gigaspora和Scutellospora，其中Glomus和Acaulospora占优势。采样点，位置和深度，遮荫树种类和遮荫树/咖啡树龄会影响AMF孢子密度。与不带阴影的咖啡植物（单一栽培）相比，包括使用豆科遮荫树在内的农林业实践可以有效地保持土壤中的AMF数量。

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《Biology and fertility of soils: Cooperating Journal of the International Society of Soil Science》 |2008年第4期|共7页
作者
Muleta Diriba; Assefa Fassil; Nemomissa Sileshi; Granhall Ulf;
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正文语种 eng
中图分类肥料学;
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Coffea arabica;

机译：阿拉伯咖啡;

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Distribution of arbuscular mycorrhizal fungi spores in soils of smallholder agroforestry and monocultural coffee systems in southwestern Ethiopia

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