Assessment of Soil Enzymatic Activities and Nutrient Status in an Inceptisol under Varying Levels of Fly Ash with Fym
Shraddha Tikariha, Vinay Bachkaiya, Vedhika Sahu, Pragya Pandey, Kirtiwardhan Sukhdeve
International Journal of Plant & Soil Science · pp. 1286–1290 · Published 21 Nov 2022
10.9734/ijpss/2022/v34i232543Abstract
Background: A study was carried out during kharif season of 2021. Field experiment was laid out in a randomized block design having 8 treatments which were randomized thrice viz. T1-Control; T2-100% RDF (100:60:40 N: P2O5:K2O kg ha-1); T3 -75% RDF + 25t/ha Fly ash; T4-75% RDF + 25t/ha Fly ash + 5t/ha FYM; T5-75% RDF + 30t/ha Fly ash; T6-75% RDF + 30t/ha Fly ash + 5t/ha FYM; T7- 75% RDF + 45t/ha Fly ash; and T8 -75% RDF + 45t/ha Fly ash + 5t/ha FYM. The results showed that application of fly ash with fertilizer and FYM could be viable source for increasing the production of crops under degraded land conditions. The experiment resulted a significant effect on the soil enzymatic activity viz. dehydrogenase (47.21 µg TPF 24 hr-1g-1 soil), urease (38.65 μg NH4+- N g-1 soil h-1), acid phosphatase (27.41µg p-nitrophenol g-1 hr-1) and alkali phosphatase activity (69.54µg p-nitrophenol g-1hr-1) which were found highest with the 75% RDF + 45t/ha Fly ash + 5t/ha FYM. Overall result concluded that use of 75% RDF + 45t/ha Fly ash + 5t/ha FYM can save 25% of fertilizer (NPK) and increase the soil biological activity. N, P, K were significantly enhanced with the incorporation of fly ash with FYM whereas there was no effect on content of micronutrients (Fe, Mn, Zn,Cu) in soil.
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