10.6084/m9.figshare.5644741.v1
Julierme Zimmer Barbosa
Julierme Zimmer
Barbosa
Giovana Clarice Poggere
Giovana Clarice
Poggere
Maristela Dalpisol
Maristela
Dalpisol
Beatriz Monte Serrat
Beatriz Monte
Serrat
Simone Bittencourt
Simone
Bittencourt
Antonio Carlos Vargas Motta
Antonio Carlos Vargas
Motta
Alkalinized sewage sludge application improves fertility of acid soils
SciELO journals
2017
Sanitation waste
liming
phosphorus recovery
nutrient source
organic matter.
2017-11-29 12:11:42
Dataset
https://scielo.figshare.com/articles/dataset/Alkalinized_sewage_sludge_application_improves_fertility_of_acid_soils/5644741
<div><p>ABSTRACT Although it is known that alkalinized sewage sludge raises the pH of acid soils, there is limited knowledge regarding its effects on other soil fertility indicators, such as P and K availability and soil organic C content. Thus, the goal of this study was to evaluate how the application of alkalinized sewage sludge affects the fertility of acid soil. Twenty sewage treatment plants were selected throughout ParanĂ¡ State (Brazil), and samples of alkalinized sewage sludge and samples of the most representative agricultural soil of the region were collected (covering soils with medium, clayey or very clayey texture). Each soil was incubated for 60 days with doses of sewage sludge (0, 10, 20, 40, and 80 Mg ha-1) from its region and equivalent doses of limestone. The alkalinized sewage sludge was superior to limestone in the correction of soil acidity (pH, Al3+, and H + Al3+) and P and Ca2+ availability. The sludge also increased Mg2+ availability in all soils, K+ in seven soils and organic C in three soils. The very clayey soils (higher buffering capacity) supported higher sludge doses than did clayey and medium texture soils. The alkalinized sewage sludge application in acid soils proved to be an interesting alternative to recycling this type of waste, because it improved soil fertility and could reduce costs associated with soil management and crop fertilization.</p></div>