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Birsa Agricultural University, Ranchi

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Subject: Soil Science and Agriculture Chemistry × Author: Arvind Kumar Singh × End date: 1997 × Start date: 1993 × Type: Thesis ×
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    ThesisItemOpen Access
    Availability of Secondary and Trace Elements to Rice Plant in Fly Ash Amended Soil
    (Birsa Agricultural University, Ranchi, 1994) Arvind Kumar Singh; R.P.Singh
    The effects of fly ash, a by-product of coal powered energy production was studied on availability of secondary and some trace elements by conducting greenhouse experiments with rice as the test crop in acid red loam soil of Ranchi. Incubation study was also conducted to study the effects of organic matter. Fly ash was high in the content of sulphur and various trace elements such as Ni, Pb, Co. Cu, Zn, Mn and Fe. However the DTPA extractable and water soluble fractions of these elements are comparatively low. Fly ash was applied at the rates 0, 8 and 16 per cent in both green house and incubation experiments. Dry weight production of rice crop at 45 days: growth was enhanced by fly ash additions with no adverse effects. Liming the fly ash amended soil did not improve the dry matter production. Fly ash addition increased the utilization of S and various trace elements Fe. Zn. Cu, Mn, Co. Pb and Ni by plants. In general, lime improved the S nutrition but depressed the uptake of various trace elements by plant. The pH of 16 per cent fly ash amended acid lateritic soil was increased by 8.4 units (5.2 to 5.6). Practically similar affects of fly ash and lime was observed on availability of the elements in post-harvest soils.