Effect of fly ash, organic wastes and chemical fertilizers on yield, nutrient uptake, heavy metal content and residual fertility in a rice–mustard cropping sequence under acid lateritic soils

Dry Matter Partitioning and Harvest Index of Maize Crop as Influenced by Integration of Sheep Manure and Urea Fertilizer

“…Nitrogen is very important for optimum plant return in term of dry matter and crop yield, but it had also adverse effects on soil fertility, environment and because of its high cost it increase the cost benefit ratio of crop [15]. Combined use of chemical and natural fertilizers is advantageous in enhancing the availability of nitrogen, phosphorus and potassium in plants [16], improve soil fertility and productivity on sustainable basis [17]. These improved soil properties and nutrients availability enhance the fresh and dry biomass production and improve the crop growth [18].…”

Opportunities and challenges in the use of coal fly ash for soil improvements – A review

“…Also, CFA contains K and alkaline earth elements (Ca, Mg) that are essential plant nutrients. A mixture of CFA with acidic soils rich in organic matter is expected to further enhance biological activity in the soil (Jala and Goyal, 2006), reducing leaching of major nutrients (Sajwan et al, 2003) and be beneficial for vegetation (Rautaray et al, 2003;Tripathi et al, 2009). Acid mine drainage, mine-tailings ponds, and mineralized waste dumps are sources of toxic metal pollutants and acidity.…”

Fate and Impacts of Priority Pollutant Metals in Coal Fly Ash–Soil–Switchgrass Plant Mesocosms

“…The by-product has been investigated for improving soil nutrient statuses (Rautaray et al, 2003;Tsadilas, 2014), moisture relationships (Chang et al, 1977;Phung et al, 1978;Garg et al, 2003;Dixit et al, 2016), pH ameliora-5-30% of toxic elements present in CFA, especially Cd, Cu, and Pb, are leachable (Natusch and Wallace, 1974); accordingly, these metals can readily percolate down and contaminate groundwater or nearby waterbodies (Carlson and Adriano, 1993;Gupta et al, 2012). Amending agricultural soils with CFA has been reported to lead to increasing concentrations of extractable Ca, Ba, Mo, Se, S, B, Pb, and Cd (Adriano et al, 1980;Singh et al, 2010;Swamy et al, 2010;Dash et al, 2015).…”