Comparative Study of Sewage Sludge from Different STPs and Various Doses of Phosphorus on Physicochemical and Macro nutrient in Soil Depth under (Vigna radiata L.)

Abstract

Sewage sludge (SS), a byproduct of treated wastewater by sewage treatment plants (STPs) are rich in organic C, and other macro -micro nutrients, which if properly managed can be used to improve organic fertility in intensively cropped degraded soil. A field experiment was conducted to examine the role of sewage sludge from different sewage treatment plants with various doses of phosphorus on physicochemical and macronutrient in soil depth under (Vignaradiata L.). Sandy loam soil, during Zaid seasons of 2017at the Nursery of Forestry, Department of Environmental Sciences & NRM in SHUATS, Prayagraj.Nineteen treatments were employed using three different areas STPs sewage sludge (SS) they are Naini STPs (A 1 ), Rajapur STPs (A 2 ) and Pritamnagar STPs (A 3 ) of two different doses of SS (10 t ha -1 and 15 t ha -1 ) with two-level of phosphorus (60kg ha -1 and 30kg ha -1 ) to find the effect and accumulation of macronutrient after application of SSin soil 0-15 & 15-30 cm depths. The results showed a positive effect of sewage sludge on physical and chemical parameters on treated soil. BD (g cm-3 ) and Solid space (%) was significantly decreased and highest data was recorded in particle density(g cm-3 ), pore space %, EC, OC% in both soil 0-15 & 15-30 cm depth in treatment T 3 (Naini 15 t ha -1 ) after application of sewage sludge as compared to control T 1 .pH was a basic parameter of soil it showed slightly acidic at higher concentration of SS in Treatment T 3 as compare to T 9 (Rajapur 15 tha -1 ) and T 15 (Pritamnagar 15 t ha -1 ). The study revealed that quality of Pritamnagar SS showed positive results compare to other SS of different STP because it had low pH with higher amount of NPK which enhance the soil health and the latest technology was used for treatment process of waste. Lower concentration of SS application was beneficial for soil productivity and agriculture for a short period of time.

Potential of sewage sludge towards germination, growth and chlorophyll content inVigna radiata L. at Prayagraj, Uttar Pradesh, India

“…The results of the current investigation demonstrated that all STP sludge had higher amounts of organic C percent, accessible macronutrients (N, P, K), micronutrients (Fe, Cu, Mn, Zn) and heavy metals (Cr, Cd, Pb, Ni) than the control. According to Sharma et al (2006) and Kesherwani et al (2020), the pH and EC concentrations were affected by the high levels of heavy metal concentrations present in sludge. Reduced soil pH in the receptor soil increased the availability of the heavy metals at higher concentrations of sewage sludge.…”