Western Australian fly ash on sandy soils for clover production

Summers, Robert; Clarke, Michael W.; Pope, Tim; O'Dea, Tim

doi:10.1080/00103629809370150

Cited by 25 publications

(24 citation statements)

References 3 publications

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“…Other elements like Pb and Cd remained non-significant throughout an experiment. The concentrations were very small in the seed and straw of both crops as the mobility of the elements is very small due to the formation of insoluble compounds (Sumners et al, 1998).…”

Section: Coal Fly Ash In Sodic Soil Reclamationmentioning

confidence: 99%

The use of coal fly ash in sodic soil reclamation

Kumar

Singh

2003

Land Degrad Dev

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An experiment was conducted for two years in northwest India to explore the feasibility of using coal fly ash for reclamation of waterlogged sodic soils and its resultant effects on plant growth in padi-wheat rotation. The initial pH, electrical conductivity, exchangeable sodium percentage and sodium adsorption ratio of the experimental soil were 9Á07, 3Á87 dS m À1 , 26Á0 and 4Á77 (me l) À1/2 , respectively. The fly ash obtained from electrostatic precipitators of thermal power plant had a pH of 5Á89 and electrical conductivity of 0Á88 dS m À1. The treatments comprised of fly ash levels of 0Á0, 1Á5, 3Á0, 4Á5, 6Á0 and 7Á5 per cent, used alone as well as in combination with 100, 80, 60, 40, 20 and 10 per cent gypsum requirement of the soil, respectively. There was a slight reduction in soil pH while electrical conductivity of the soil decreased significantly with fly ash as measured after padi and wheat crops. The sodium adsorption ratio of the soil decreased with increasing fly ash levels, while gypsum treatments considerably added to its favourable effects. Fly ash application increased the available elemental status of N, K, Ca, Mg, S, Fe, Mn, B, Mo, Al, Pb, Ni, Co, but decreased Na, P and Zn in the soil. An application of fly ash to the soil also increased the concentrations of above elements except Na, P and Zn in the seeds and straw of padi and wheat crops. The available as well as elemental concentrations in the plants was maximum in the 0 per cent fly ash þ 100 per cent gypsum requirement treatment except Na and heavy elements like Ni, Co, Cr. The treatment effects were greater in the fly ash þ gypsum requirement combinations as compared to fly ash alone. Saturated hydraulic conductivity and soil water retention generally improved with the addition of fly ash while bulk density decreased. Application of fly ash up to 4Á5 per cent level increased the straw and grain yield of padi and wheat crops significantly in both years. The results indicated that for reclaiming sodic soils of the southwest Punjab, gypsum could possibly be substituted up to 40 per cent of the gypsum requirement with 3Á0 per cent acidic fly ash.

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Section: Coal Fly Ash In Sodic Soil Reclamationmentioning

confidence: 99%

The use of coal fly ash in sodic soil reclamation

Kumar

Singh

2003

Land Degrad Dev

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“…However, reductions in plant growth due to toxic effects of one or more elements (e.g., B toxicity) have also been reported (Bilski et al, 1995;Carlson and Adriano et al, 1993). Positive yield responses to several sources of fly ash have been reported for several crops on a variety of soil types (Adriano et al, 2001;Hill and Lamp, 1980;Martens, 1971;Pathan et al, 2001;Rees and Sidrak, 1956;Summers et al, 1998).…”

Section: Introductionmentioning

confidence: 93%

“…Fly ash is comprised primarily of fine sand-and silt-sized particles; therefore if applied at sufficient rates to sandy soils it can be used to change soil texture in order to increase water holding capacity (Aitken et al, 1984;Chang et al, 1977;Campbell et al, 1983;Gangloff et al, 2000;Ghodrati et al, 1995;Pathan et al, 2003a;Salter et al, 1971). Fly ash has also been reported to improve the nutritional status of soils by provision of some essential nutrients (Martens, 1971;Roberts, 1966;Summers et al, 1998). However, reductions in plant growth due to toxic effects of one or more elements (e.g., B toxicity) have also been reported (Bilski et al, 1995;Carlson and Adriano et al, 1993).…”

Section: Introductionmentioning

confidence: 96%

Turf culture under declining volume and frequency of irrigation on a sandy soil amended with fly ash

2005

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“…Fly ash particles are characterised with physical structures consisting of "hollow spheres" which show an increased surface area, capillary action, and nutrientholding capacity compared with sands (Fisher et al, 1976). Interest in the use of fly ash as a soil amendment (or ameliorant) results from (i) the need to develop sustainable uses of this by-product (Adriano et al, 1980;Bilski et al, 1995) and (ii) reports showing improved growth of some crops (El-Mogazi et al, 1988;Rees and Sidrak, 1956), pasture (Hill andLamp, 1980 andSummers et al, 1998), and after turf species Weber, 2001 andPathan et al, 2001), following addition of fly ash to some soils. Therefore the choice of PFA (ameliorant) was based on the potential of its efficacy over a wide range of pH, and with reference to associated phenomena occurring at the oxide/water interface (Stumm, 1992), such as ion exchange, adsorption, surface precipitation and bulk solution precipitation which can be attributed to the effective removal of heavy metals in aqueous solution by fly ash (Ricou et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

Determination of adsorption efficiency based on cation exchange capacity related to red earth, bone meal and pulverised fly ash as ameliorants to lead contaminated soils

Gatima

Mwinyihija²,

Killham

2006

Int. J. Environ. Sci. Technol.

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Efficient treatment strategies to reduce the toxicity of metal contaminated soil using cost effective techniques such as naturally available ameliorants and industrial waste have emerged. Three easily available amendments were determined: Bone meal, red earth/mud and pulverised fly ash (PFA). The application of ameliorants offered a possible alternative in situ remediation of contaminated sites without disruption to the ecosystem profile. In comparison to other ameliorants Red earth/mud was found to be efficient in intercepting lead leaching from soil amended with different lead compounds based on CEC (Cmol/g). This was associated with the heterogeneous adsorbency principle in red mud which is associated with its ability to bind metal ions (M 2+ ) onto one or two types of surface sites at pH< 6.0. However areas that need to be studied and assessed (for public health concerns) critically for wide spread application of all the ameliorants include off-site effects of the ameliorants.

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Western Australian fly ash on sandy soils for clover production

Cited by 25 publications

References 3 publications

The use of coal fly ash in sodic soil reclamation

The use of coal fly ash in sodic soil reclamation

Turf culture under declining volume and frequency of irrigation on a sandy soil amended with fly ash

Determination of adsorption efficiency based on cation exchange capacity related to red earth, bone meal and pulverised fly ash as ameliorants to lead contaminated soils

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