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Papers by Hossein Shariatmadari

JWSS - Isfahan University of Technology, 2017

Journal of Science and Technology of Greenhouse Culture, 2016

Journal of Water and Soil Science, 2020

The production of compost and vermicompost from manure and different organic residues and also, t... more The production of compost and vermicompost from manure and different organic residues and also, their enrichment with some fertilizers and other treatments have been extensively investigated. However, no study has yet been conducted on the enrichment of composted and vermicomposted manure with clay minerals. This research was, therefore, carried out to investigate the selected properties of phlogopite enriched manure during the composting process with and without earthworm activity. The experiment was conducted in plastic containers with the lid under an average temperature of 27.5°C and the humidity of 42.5% using a factorial arrangement in a completely randomized design with 3 replications. Factors included levels of phlogopite addition (0%, 20% and 40% by weight), with or without the earthworm Eisenia fetida for different time periods of 1.5, 3, 4.5 and 6 months. At the end of the experiment, the total of organic carbon, nitrogen, potassium, magnesium, and iron, as well as the contraction the available magnesium, potassium and iron, was determined. The results showed that the percent of organic carbon was decreased while the total nitrogen, the total and available potassium, iron and magnesium were increased with time. The results also indicated that a significant percentage of the total content of the elements in all treatments without phlogopite was available. However, in treatments containing phlogopite, the amount of the available elements was increased slowly with time. This was Due to the weathering of phlogopite mineral and the decomposition of manure. In general, it seems that the enrichment of composted and vermicomposed manure with phlogopite can guarantee the supply of nutrients such as potassium, iron and magnesium in a longer period, as compared with the ordinary composts.

IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), 2019

JWSS - Isfahan University of Technology, 2012

Iron deficiency is most widespread among plant nutrients. Nowadays, different materials such as i... more Iron deficiency is most widespread among plant nutrients. Nowadays, different materials such as inorganic salts, organic chelates, soil acidifying materials and industrial wastes are used to correct iron deficiency. Slag and convertor sludge of steel factories are among the industrials wastes for this purpose. These materials contain considerable amount of iron produced in large quantities every year. Application of slag and convertor sludge to soil may affect bioavailability and chemical forms of iron in soil. Sequential chemical extraction technique has been widely used to examine these chemical forms, and thus to better understand the processes that influence element availability. It was, therefore, the objective of this study to investigate the application effect of slag and convertor sludge of Esfahan Steel Mill on the chemical forms of iron, distribution of these forms and bioavailability of iron in surface (0-20cm) and subsurface (20-45cm) soil of three research fields. The results showed that more than 99% of the applied Fe occurred in residual, Fe oxide and hydroxide and free forms. Application of slag and convertor sludge for three consecutive years increased chemical forms and DTPA extractable iron in surface and subsurface soil of three fields.

The South African Journal of Plant and Soil, 2010

An array of kinetic equations has been used to describe time-dependent sorption of P by soils. We... more An array of kinetic equations has been used to describe time-dependent sorption of P by soils. We investigated P sorption kinetics in calcareous soils at upper-, mid-, and lowerslope positions of two arid and two semi-arid landscapes and its relationship with plant growth and P uptake by wheat. The P sorption kinetics was described by the rival kinetic models in the order: power function Elovich > parabolic diffusion > first order > second order equation, all indicative of diffusion kinetics with a slow chemical reaction. The rate parameters showed positive correlations with CBD-extractable Al and active calcium carbonate contents and negative correlations with organic carbon content. The P sorption rate at 0.25 h and 72 h after initiation of the experiment (SRin and SRf, respectively) and the P sorption rate parameters derived from the Elovich (1/β), power function (ab) and parabolic diffusion (R) equations were significantly correlated with the shoot dry matter and P upta...

Journal of Agricultural Science and Technology

The ability of earthworms in recycling a wide range of organic solid wastes is well established. ... more The ability of earthworms in recycling a wide range of organic solid wastes is well established. Only a few earthworm species are suitable for commercial vermicomposting. Two species, Eisenia foetida and Lumbricus rubellus, are common in temperate regions. Samples of earthworms were collected from manure pills and forest litter in North and Northwest of Iran. The samples were maintained in pots under greenhouse conditions. External morphological characteristics of mature worms were used in identifying earthworm species. These characteristics included: total number of body segments, numbers of clitellum and tubercula pubertatis (TP) segments, dorsal and external body color, body size, prestomium and prostomium shape, number of first segment with dorsal pore and patterns of clitellum and TP. All collected samples belonged to the species Eisenia foetida. Under incubation conditions in manure substrate (a moisture of 70% saturation at 24±2oC), each worm produced 1-2 cocoons daily and ea...

Arid Land Research and Management, 2022

Study of Pb desorption processes from clay minerals by chelating ligands is crucial to better und... more Study of Pb desorption processes from clay minerals by chelating ligands is crucial to better understand the fate and transport of Pb in soil and sediment environments. In this study, Pb desorption from a Pb-loaded montmorillonite (MMT) was studied as affected by ethylenediaminetetraacetic acid (EDTA) and its two alternative eco-friendly chelating agents, i.e., methylglycine diacetic acid (MGDA) and glutamic-N,N-diacetic acid (GLDA) at two concentrations of 0.25 and 1.0 mM. The impacts of a 30-day residence time on the rate and quantity of Pb desorption were also evaluated. The result showed that Pb desorption kinetics was biphasic with an initial rapid phase, lasting for about 3 h, followed by a slow phase, lasting to 12 h. The degree of Pb desorption from Ca-MMT was proven to be governed by the nature and concentration of the chelating ligands presented in the systems. The capacity of the ligands to desorb Pb from Ca-MMT was in the order EDTA > > MGDA > GLDA, according to...