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
B� tfHB � y:"B Yagut"'>) میانگین وزنی قطر خاکدانهها (MWD) به میزان 4/193 و 8/288 درصد، منافذ مزو به میزان 7/49 و 9/25 و منافذ میکرو به میزان 5/5 و 6/19 درصد، رطوبت ظرفیت مزرعهای (FC) به میزان 1/14 و 1/35 درصد، رطوبت نقطه پژمردگی دائم (PWP) به میزان 4/12 و 6/22 درصد، آب قابل استفاده (AWC) به میزان 9/14 و 3/41 درصد و کاهش جرم مخصوص ظاهری (Db) به میزان 1/4 و 8 درصد، منافذ ماکرو به میزان 2/10 و 1/14 درصد و هدایت هیدرولیکی اشباع (Ks) به میزان 4/52 و 8/70 درصد نسبت به شاهد گردیدند. مقدار جذب فسفر در اثر همزیستی با قارچهای GE و GI نسبت به شاهد به ترتیب حدود 2/1089 و 8/600 درصد و مقدار جذب پتاسیم حدود 5/811 و 2/506 درصد در اندامهوایی گوجهفرنگی افزایش یافت. میتوان نتیجه گرفت همزیستی میکوریزی به عنوان یک روش بیولوژیک و پایدار باعث ارتقای کیفیت فیزیکی و شیمیایی در خاک درشت بافت میگردد.
Samaei, F., Asghari, S., Aliasgharzad, N., & Sarikhani, M. (2014). Influence of Arbuscular Mycorrhizal Fungi on some Physical Properties and Nutrient Uptake in a Sandy Loam Soil under Growth of Tomato. Water and Soil Science, 23(4), 33-43.
MLA
F Samaei; SH Asghari; N Aliasgharzad; MR Sarikhani. "Influence of Arbuscular Mycorrhizal Fungi on some Physical Properties and Nutrient Uptake in a Sandy Loam Soil under Growth of Tomato". Water and Soil Science, 23, 4, 2014, 33-43.
HARVARD
Samaei, F., Asghari, S., Aliasgharzad, N., Sarikhani, M. (2014). 'Influence of Arbuscular Mycorrhizal Fungi on some Physical Properties and Nutrient Uptake in a Sandy Loam Soil under Growth of Tomato', Water and Soil Science, 23(4), pp. 33-43.
VANCOUVER
Samaei, F., Asghari, S., Aliasgharzad, N., Sarikhani, M. Influence of Arbuscular Mycorrhizal Fungi on some Physical Properties and Nutrient Uptake in a Sandy Loam Soil under Growth of Tomato. Water and Soil Science, 2014; 23(4): 33-43.
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