THE EFFECTS OF SECONDARY TREATMENT ON NODULATION OF ALFALFA (MEDICAGO SATIVA L.) AND NUTRIENTS SUPPLY IN DOMESTIC WASTEWATER

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Arvas Ö., Yağan F., Yeşilova A.

APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH, cilt.20, sa.6, ss.4951-4969, 2022 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 6
  • Basım Tarihi: 2022
  • Doi Numarası: 10.15666/aeer/2006_49514969
  • Dergi Adı: APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Environment Index, Pollution Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.4951-4969
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

Organic matter deficiency limits plant production in arid and semi-arid areas. Secondary treated sludge is an effective source of organic waste. The effect of sewage sludge in addition to diammonium phosphate (DAP) fertilizer on nutrient and metal concentrations of herbage and soil in an artificial pasture under arid and semi-arid condition was examined in this study. The pasture consisted of Onobrychis sativa (35%), Poterium sanguisorba (40%) and Agropyron elongatum (25%) mixture. A total of 150 kg ha-1 DAP was applied to all plots with sowing. Additionally, 30, 60 and 90 tonne ha-1 of sewage sludge was applied in a randomized block design. The addition of the sewage sludge increased P and K concentrations, however decreased B and Pb concentrations in the herbage significantly. Fe, Cu, Zn, Co, Se, Mo, Mn, Ni, Cr concentrations also decreased, but this change was not significant. The concentration of Cd in herbage increased with increasing sewage sludge doses. Sewage sludge improved pH, electrical conductivity and organic matter at two soil depths and increased N, P and K concentrations in both the topsoil and subsoil. The addition of domestic secondary treated sewage sludge could reduce the efficacy of some DAP-sourced metals.