Influence of Arbuscular Mycorrhizal Fungi on some Physical Properties and Nutrient Uptake in a Sandy Loam Soil under Growth of Tomato

Arbuscular mycorrhizal (AM) fungi are beneficial not only for providing plants with nutrients but also for improving the soil structure and aggregate stability by producing glomalin, which is a glycoprotein. A completely randomized block experimental design was conducted with two species of arbuscular mycorrhizal fungi, Glomus intraradices (GI), Glomus etunicatum (GE) and non-mycorrhizal (control) under growth of tomato with four replicates in a sandy loam soil at greenhouse conditions. Results showed that GI and GE significantly (P < 0.01) increased mean weight diameter of aggregates (MWD) by 193.4 and 288.8 %, mesopores by 49.7 and 25.9 %, micropores by 5.5 and 19.6 %, field capacity (FC) moisture by 14.1 and 35.1 %, permanent wilting point (PWP) by 12.4 and 22.6 %, available water capacity (AWC) by 14.9 and 41.3 %, but decreased bulk density (Db) by 4.1 and 8 %, macropores by 10 and 14.1 %, saturated hydraulic conductivity (Ks) by 52.4 and 70.8 %, respectively in comparison with control treatment. GI and GE fungi significantly (P < 0.01) increased uptake of phosphorus and potassium by 600.8 and 1089.2 %, 506.2 and 811.5 %, respectively relative to the control in tomato shoot. It is concluded that mycorrhizal symbiosis as a biological method improves physical and chemical quality of the coarse-textured soil

[1]  M. Rillig,et al.  Soil biota effects on soil structure: Interactions between arbuscular mycorrhizal fungal mycelium and collembola , 2012 .

[2]  S. Mooney,et al.  The effects of simultaneous root colonisation by three Glomus species on soil pore characteristics , 2012 .

[3]  N. Aliasgharzad,et al.  Comparative effects of two arbuscular mycorrhizal fungi and K fertilizer on tuber starch and potassium uptake by potato (Solanum tuberosum L.). , 2012 .

[4]  M. Budak,et al.  Effects of long-term organic and mineral fertilizers on bulk density and penetration resistance in semi-arid Mediterranean soil conditions , 2010 .

[5]  F. Lamy,et al.  Impact of roots, mycorrhizas and earthworms on soil physical properties as assessed by shrinkage analysis , 2009 .

[6]  M. Miransari,et al.  Alleviation of salinity stress on wheat yield, yield components, and nutrient uptake using arbuscular mycorrhizal fungi under field conditions. , 2009, Journal of plant physiology.

[7]  M. Rillig,et al.  Microbiota accompanying different arbuscular mycorrhizal fungal isolates influence soil aggregation , 2005 .

[8]  Ş. Kılıç,et al.  Effects of compost, mycorrhiza, manure and fertilizer on some physical properties of a Chromoxerert soil , 2004 .

[9]  B. Dell,et al.  Nutrient uptake in mycorrhizal symbiosis , 1994, Plant and Soil.

[10]  L. Abbott,et al.  Vesicular-arbuscular mycorrhizas and soil salinity , 1993, Mycorrhiza.

[11]  D. Hillel Environmental soil physics , 1998 .

[12]  R. Keren,et al.  Sodic Calcareous Soil Reclamation as Affected by Water Chemical Composition and Flow Rate , 1996 .

[13]  Martha Christensen,et al.  A View of Fungal Ecology , 1989 .

[14]  A. Hamblin,et al.  The influence of soil structure on water movement, crop root growth, and water uptake , 1986 .

[15]  D. S. Hayman The physiology of vesicular-arbuscular endomycorrhizal symbiosis , 1983 .