A sole-carbon-source catabolism assay (Biolog GN microplate) was used to study whether bacterial communities from the same vertic soil, but under different management history, showed distinctive patterns of C-substrate utilization. Two sampling depths (0–7.5 and 7.5–15 cm) were also investigated. The response of microbial communities to increasing periods of time — 16, 26 and 40 years (S2, S3, ...

background: vahlkampfiids contains wide variety of genuses with some known as human pathogens such as naegleria , vahlkampfia and non pathogens such as willaertia. since there was no evidence of presence of vahlkampfiids in different sources in iran, we have analyzed soil samples to clarify the presence of these amebas. methods: seven soil samples collected in tehran were analyzed to clarify th...

studying forest degradation through evaluation of soil nutrient concentrations, which reveals soil functioning within the ecosystem, is necessary for sustainable management of land resources. this research was conducted to understand the changes of soil nutrient, resulting from exploitive management using some soil features and their spatial pattern. in the mid-summer of 2014, two sites were se...

this study was carried out in order to develop a soil fertility database and to assess agricultural soil fertility of country. to this end, 315000 soil test data (more than 50000 soil samples) that provided by laboratories of soil and water research centers in 30 provinces of iran between 2002 and 2012 was collected. results revealed that amount of  plant available  phosphorus and potassium of ...

There are various methods to evaluating phosphate rock for direct application. The first approach is solubility test of Phosphate Rocks (PR) using chemical extractant. In this study to compare the effectiveness of direct application of PRs, two samples of a sedimentary unbeneficiated PR from Lar mine of Yasooj and two samples of concentrated PR of Asfordi igneous PR of Yazd in Iran along with o...

The within-site variability of soil characteristics on sites with different soil types remains poorly quantified, although this information is crucial for the success of research on soil properties, and especially for monitoring soil properties over time. We used coefficients of variation and multilevel variance component models to examine the within-site variation of soil (0–30 cm) mineral nut...

A new species of the family Tydeidae from Iran, Tydeus shabestariensis sp. nov., is described from adult males and females collected from soil in apple orchards. A key to species of Tydeus of Iran, based on females, is provided. The male of Neopronematus sepasgosariani (Tydeoidea: Iolinidae) is also described and illustrated for the first time.

1Assistant Professor, Department of Water Engineering, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran E-mail: [email protected], Af. Member of ASCE 2Research assistant, Nanjing hydraulic research institute, Geotechnical Engineering Department, Nanjing, P.R. China E-mail: [email protected] 3Assistant Professor, Department of Soil Science, Faculty of Agriculture, Khorasgan Is...