Effect of Cadmium on wheat as influenced by lime and manure and its toxic level in plant and soil

Singh, Satya Prakash; Takkar, P. N.; Nayyar, V. K.

doi:10.1080/00207238908710480

Cited by 9 publications

(5 citation statements)

References 17 publications

(11 reference statements)

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“…Agriculture drainage water carries huge amount of allochthonous sediments into earthen ponds which are deposited and incorporated into total sediments (Singh et al, 1989). The same authors indicated that pond sediments are considered as reservoir of contaminants, being ecologically important in the classification of trophic status of aquatic systems.…”

Section: Sedimentsmentioning

confidence: 99%

Impact of Fish Farm Management on Physico-chemical Properties of Water and Sediments in earthen ponds

2016

Egyptian Journal for Aquaculture

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The study was conducted in two fish farms located at El-Rayed area, Kafer El-Sheikh governorate, Egypt, to assess the impact of management on water and sediments characteristics. The two farms had different feeding regimes; the first farm uses pelleted feed, while the second one receives organic fertilization, was replicated in four ponds (8400m 2 each). Water samples were collected monthly and sediment at the beginning and the end of experimental period to determine both water and sediment quality. The results revealed that there were no differences in water in temperature, electrical conductivity and total hardness between the two farms. While, noted significant differences were observed in water pH, dissolved oxygen (DO), secchi disk, total alkalinity, orthophosphate, nitrogen component (ammonia, nitrate and nitrite) and chlorophyll "a". Concerning physical parameters of sediment, an increase in organic matter content in surface layer was observed compared the subsurface layer especially in fertilizer fish farm. The differences in sediment pH were insignificant. The changes in sand and clay percentage in surface layer were higher than the subsurface layer. Chemical properties of sediment changed in terms of salinity and ions content, leaching from the surface to the subsurface layer. Salinity and different ions were decreased in the surface layer of the two fish farms by the end of the experiment. The surface layer in the fertilizer fish farm contained a higher percentage of nutrients nitrogen, phosphorous and potassium compared the feed fish farm. Water quality in fish farms is greatly influenced by feed management and fertilizer inputs which in turn affect sediment quality in ponds. Key word: Fish farms, water quality, sediment quality, physical-chemical properties. INTRODUCTION Decisions regarding fertilization and supplementary feeding are especially important because they are major determinants of nutrient for fish growth and major causes of water quality problems. Fish ponds have resulted in

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Section: Sedimentsmentioning

confidence: 99%

Impact of Fish Farm Management on Physico-chemical Properties of Water and Sediments in earthen ponds

2016

Egyptian Journal for Aquaculture

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“…Application of lime, organic amendments like use of FYM, vermicompost and heavy doses of phosphatic fertilizers and oxides of Mn and Fe would reduce transfer of heavy metals from the soil into plant. This lowers the concentration of heavy metals in the food and reduces phytotoxic effect on plants (Hyun et al, 1998 ;Impens et al, 1991;Singh et al, 1989). Such work is rarely found in the Indian context (Rattan et al, 2002).…”

Section: Remediationmentioning

confidence: 99%

“…Mench et al (1994) showed that application of hydrous manganese oxides was more effective than lime, basic slag and hydrous iron oxides in reducing the transfer of Cd and Pb from contaminated soil to soil-solution and further restricted their entry into food chain via plant uptake. In a greenhouse experiment, Singh et al (1989) showed that addition of lime and FYM together significantly reduced DTPA extractable Cd in a Fatehpur loamy sand alkaline soil (Table 17). This resulted in reducing the toxic effect of Cd and improved the yield of wheat.…”

Section: Remediationmentioning

confidence: 99%

“…This resulted in reducing the toxic effect of Cd and improved the yield of wheat. Two points emerge from these studies: i) As seen from the work of Singh et al (1989), there is limit beyond which application of lime or FYM or a combination is not effective in containing Cd level to a safe limit. ii) Since heavy metals remain in the system in an inactive form, it is a temporary relief and, sooner or later, the immobilized heavy metals become available for plant uptake.…”

Section: Remediationmentioning

confidence: 99%

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Environmental Risks Associated with Heavy Metal Contamination in Soil, Water and Plants in Urban and Periurban Agriculture

Ganeshamurthy,

Varalakshmi,

Sumangala

2008

J. Hortic. Sci.

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The India's population living in cities and urban areas has doubled to 27.8% since Independence. Our cities face enormous challenges of environmental pollution and health related problems. City authorities have often been reluctant to accept urban and periurban agriculture because of perceived health risks. Nevertheless, in most cities the world over, periurban agriculture is practiced on a substantial scale, despite prohibitive laws and regulations. Non-degradable pollutants added to the system through anthropogenic activities like heavy metals in air, soil, water and crops bother us more than others as these tend to bio-accumulate. Throughout history, heavy metal contamination has long plagued mankind - undermining intelligence and causing debasing behaviour. Toxicity of some of the heavy metals even leads to deficiency of essential metals like Zn, Cu, etc. in both human and animals. Climate, nutritional status, genetic predisposition, type of work and exposure level influence the intensity of impact on health. Permissible levels prescribed by different organizations differ because of differences in tolerance levels of people of different origins and differences in threat perception of the people. With our current level of knowledge a permanent and foolproof method to stop entry of heavy metals into the food chain is impossible. However, methods are available to reduce intensity of the effects. Alternative land use with crops not directly consumed by human beings and animals offers a better remedy to contain heavy metal entry into food chain. India has a wide ranging set of environmental laws that lay down norms for air, water, soil, wastes, etc. Legislative frame work has been developed in the belief that a policing model is sufficient. It does not go beyond that. Regulatory mechanisms may not be effective in isolated cases but are essential drivers to augment other approaches, by putting a "cap" on the level of degradation that is socially acceptable, as well as creating space for other, cleaner and more acceptable alternatives to be "viable".

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“…Sediments are ecologically important components of the aquatic habitat and are also a reservoir of contaminants, which play a significant role in maintaining the trophic status of any water body (Singh et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Physical, Chemical Properties Assessment and accumulation of Some Heavy Metals in Sediment of Edku Lake, Egypt

Farouk¹,

Ahmed²

2019

Egypt. J. of Aquatic Biolo. and Fish.

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Effect of Cadmium on wheat as influenced by lime and manure and its toxic level in plant and soil

Cited by 9 publications

References 17 publications

Impact of Fish Farm Management on Physico-chemical Properties of Water and Sediments in earthen ponds

Impact of Fish Farm Management on Physico-chemical Properties of Water and Sediments in earthen ponds

Environmental Risks Associated with Heavy Metal Contamination in Soil, Water and Plants in Urban and Periurban Agriculture

Physical, Chemical Properties Assessment and accumulation of Some Heavy Metals in Sediment of Edku Lake, Egypt

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