SEGH Articles

SEGH Representation - Scientific Events in Pakistan

10 January 2016
Dr Munir Zia gives an update on SEGH representation at two scientific events during 2015 in Pakistan

 

Dr Munir Zia represented SEGH at two of the following events during 2015 in Pakistan:

1. International Conference on Soil Sustainability and Food Security held at the University of Agriculture in Faisalabad (Nov 15-17)

2. International Workshop on Current status of fertilizer use in Pakistan (Nov 29-Dec 01)

Dr Munir Zia, R&D Coordinator for the Fauji Fertilizer Company in Pakistan, while representing SEGH, delivered an invited talk on “Health risk assessment of potentially harmful elements (PHEs) and dietary minerals (DMs) from soils and vegetables irrigated with wastewater” at the International Conference on Soil Sustainability and Food Security held at the University of Agriculture in Faisalabad, Pakistan. Scientists from Germany, Australia, and UAE also participated in the event that was inaugurated by the Federal Minister for Food Security.

 

Dr Munir Zia also represented SEGH at an International Workshop on  the Current status of Fertilizer use in Pakistan. The workshop in November 2015 was organised by the University of Agriculture in Faisalabad and the International Centre for Agricultural Research in Dry Areas (ICARDA) under the framework of the Consortium Research Programme on Water, Land and Ecosystems.

 

 

The main concern in agricultural production systems are the inefficient use of fertilizers and their impact on the environment. Improving fertilizer use efficiency requires a multi-disciplinary, multi-pronged approach in fertilizer and irrigation management, breeding, extension and policy interventions. The contrasting situation is the underuse of fertilisers where farmers are not achieving optimal yields because they cannot get access to or afford fertilizers. This workshop will highlight the problem of fertilizer mismanagement; its over, inappropriate and under use, and losses due to agricultural activities. This activity will help in the identification of areas for policy intervention to improve fertilizer distribution and management or regulate its use.

by Dr Munir Zia

R&D Coordinator Fauji Fertilizer Company, Pakistan

SEGH Representative in Pakistan

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Latest on-line papers from the SEGH journal: Environmental Geochemistry and Health

  • Earthworms and vermicompost: an eco-friendly approach for repaying nature’s debt 2020-01-23

    Abstract

    The steady increase in the world’s population has intensified the need for crop productivity, but the majority of the agricultural practices are associated with adverse effects on the environment. Such undesired environmental outcomes may be mitigated by utilizing biological agents as part of farming practice. The present review article summarizes the analyses of the current status of global agriculture and soil scenarios; a description of the role of earthworms and their products as better biofertilizer; and suggestions for the rejuvenation of such technology despite significant lapses and gaps in research and extension programs. By maintaining a close collaboration with farmers, we have recognized a shift in their attitude and renewed optimism toward nature-based green technology. Based on these relations, it is inferred that the application of earthworm-mediated vermitechnology increases sustainable development by strengthening the underlying economic, social and ecological framework.

    Graphic abstract

  • Plasticizers and bisphenol A in Adyar and Cooum riverine sediments, India: occurrences, sources and risk assessment 2020-01-23

    Abstract

    Adyar and Cooum, the two rivers intersecting Chennai city, are exposed to serious pollution due to the release of large quantities of dumped waste, untreated wastewater and sewage. Sediments can act as repository for emerging organic contaminants. Hence, we have monitored the occurrence and risk associated with plasticizers [six phthalic acid esters (PAEs), bis(2-ethyl hexyl adipate) (DEHA)] and bisphenol A (BPA) in surface riverine sediments of Adyar and Cooum rivers from residential/commercial, industrial and electronic waste recycling sites. Σ7plasticizers (PAEs + DEHA) in the Adyar riverine sediment (ARS) and Cooum riverine sediment (CRS) varied between 51.82–1796 and 28.13–856 ng/g, respectively. More than three-fourth of Σ7plasticizers came from bis(2-ethylhexyl) phthalate (DEHP), in accordance with the high production and usage of this compound. BPA varied between 10.70–2026 and 7.58–1398 ng/g in ARS and CRS, respectively. Average concentrations of plasticizers and BPA were four times higher in electronic waste (e-waste) recycling sites when compared with industrial and residential/commercial sites. BPA and DEHP showed a strong and significant correlation (R2 = 0.7; p < 0.01) in the e-waste sites thereby indicating common source types. Sites present at close proximity to raw sewage pumping stations contributed to 70% of the total BPA observed in this study. For the derived pore water concentration of plasticizers and BPA, the ecotoxicological risk has been found to be higher in ARS over CRS. However, sediment concentrations in all the sites of ARS and CRS were much below the recommended serious risk concentration for human (SRChuman) and serious risk concentration for ecotoxicological (SRCeco).

  • Distribution of metal(loid)s in particle size fraction in urban soil and street dust: influence of population density 2020-01-18

    Abstract

    Assessment of street dust is an invaluable approach for monitoring atmospheric pollution. Little information is available on the size distribution of contaminants in street dusts and urban soils, and it is not known how the population density would influence them. This research was carried out to assess the size distribution of trace metal(loid)s in street dust and urban soil, and to understand how population density might influence the size-resolved concentration of metal(loid)s. Three urban areas with a high, medium and low population density and a natural area were selected and urban soil and street dust sampled. They were fractionated into 8 size fractions: 2000–850, 850–180, 180–106, 106–50, 50–20, 20–10, 10–2, and < 2 µm. The concentration of Pb, Zn, Cu, Cd, Cr, Ni, As, and Fe was determined, and enrichment factor and grain size fraction loadings were computed. The results indicated that the concentration of Pb, Zn, Cu, Cd, and Cr was highly size dependent, particularly for particles < 100 µm, especially for street dust. Low concentrations of Ni and As in street dust and urban soil were size and population density independent. Higher size dependency of the metals concentration and the higher degree of elemental enrichment in the street dust fractions than the urban soils indicate higher contribution of human-induced pollution to the dust. Findings also confirm the inevitability of size fractionation when soils or dusts are environmentally assessed, particularly in moderately to highly polluted areas. Otherwise, higher concentrations of certain pollutants in fine-sized particles might be overlooked leading to inappropriate decisions for environmental remediation.