نتایج جستجو برای: polluted soil

تعداد نتایج: 189014  

The presence of large heavy metal concentrations in soil polluted with chemical weapons causes serious operational restrictions against cultivation of agricultural crops like wheat. To solve this problem, the usage of zeolite has been proposed as one of the most efficient practical approaches. The main objective of this research is the investigation of the influence of natural Iranian zeolite o...

2010
DAVID E. HANKE

KRAIGHER H. & HANKE D.E. 1996. Cytokinins in Norway spruce seedlings and forest soil pollution. Phyton (Horn, Ausrtia) 36 (3): (57) (60). Cytokinins can correlate with pollution damage in spruce trees and also with different strains and species of their mycorrhizal symbionts. In our study, Norway spruce seedlings were grown in vitro on sterilized or nonsterile soil substrates from two different...

Journal: :Biology letters 2010
Ming Nie Qiang Yang Li-Fen Jiang Chang-Ming Fang Jia-Kuan Chen Bo Li

Biomass allocation is an important plant trait that responds plastically to environmental heterogeneities. However, the effects on this trait of pollutants owing to human activities remain largely unknown. In this study, we investigated the response of biomass allocation of Phragmites australis to petroleum pollution by a ¹³CO₂ pulse-labelling technique. Our data show that plant biomass signifi...

2010
Laiyuan Zhong Liming Liu Jiewen Yang

A field survey was conducted to investigate the heavy metal contamination of paddy soils in Xiangyin County, China. The total concentration of Cd, Pb, Zn, Cu, Cr and Ni in paddy soil was measured, and the environmental quality of paddy soil was assessed using pollution index methods. Paddy soils were slightly polluted with the content of Cd exceeding the standard value. The moderately polluted ...

2016
Yuan Liu Yongzhuo Liu Huimin Zhou Lianqing Li Jinwei Zheng Xuhui Zhang Jufeng Zheng Genxing Pan

Denitrification is one of the most important soil microbial processes leading to the production of nitrous oxide (N2O). The potential changes with metal pollution in soil microbial community for N2O production and reduction are not well addressed. In this study, topsoil samples were collected both from polluted and non-polluted rice paddy fields and denitrifier communities were characterized wi...

Journal: :Ecotoxicology 2009
P Madejón M T Domínguez J M Murillo

Pasture established on polluted soil may pose a risk to grazing livestock creating a requirement for mechanical management which may affect biodiversity and expend energy. The risk associated with managing pasture by grazing horses (non-edible livestock) is being assessed in the Guadiamar Valley (SW Spain), where soils are polluted with trace elements following a major pollution incident. Soil ...

2009
Tomoyuki Makino

Rapid industrialization in the 1960s caused heavy metals such as cadmium (Cd) to severely pollute soil in Japan. The Agricultural Land Soil Pollution Prevention Law was enacted in 1970 to cope with the heavy metal pollution. Cd, in particular, has been recognized as one of the most detrimental elements in Japan because of the so-called “itai-itai” disease caused through Cd uptake. Recently, the...

Journal: :تحقیقات مهندسی کشاورزی 0
بهمن یارقلی عضو هیات علمی و استادیار مؤسسه تحقیقات فنی و مهندسی کشاورزی

environmental pollution by heavy metals is a growing global concern. most heavy metals accumulate in the top soil and in the long term, increased concentrations in the soil results in increased absorption and accumulation in plants. the usual concentration of cadmium in the soil is 0.001-2.4 mg/kg of dry soil. the level of absorption and accumulation in plants depends on the type of plant, tiss...

The present study investigated the impact of environmental pollution, represented in soil,irrigation water and air heavy metals, on the growth and production of Egyptian clovercultivated at south Greater Cairo, Egypt. Plants were sampled through five quadrats (0.5×0.5m), distributed equally in four cultivated farms in unpolluted and polluted sites, at theharvesting time. In addition, soil, air ...

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