Abstract
Conventional mineral fertilization (CMF) is a common practice in infertile sugarcane-cultivated tropical soils, increasing production costs and environmental concerns. Combining CMF with composted sewage sludge (CSS) could be a sustainable strategy. We aim to evaluate changes in soil chemical properties, macro- and micronutrient concentrations in the soil surface (Ap1; 0–25 cm) and subsurface (Ap2; 25–50 cm) horizons, after CSS application with or without CMF in sugarcane cultivation (first and second ratoon cane). Eleven treatments, featured by CSS increase rates and mixed with CMF at different concentrations, were tested in the first ratoon; during the second, the CSS residual effect was evaluated. Applying CSS in sugarcane-cultivated soils, improved the following: (i) soil organic matter, pH, the sum of bases, cation-exchange capacity, and base saturation; (ii) overall nutrient concentrations (P, K, Ca, Mg, B, Cu, and Zn). The treatments showing the best performances were those with 5.0 Mg ha−1 of CSS. Composted sewage sludge has the potential for use as an organic natural fertilizer reducing the need for CMF. When applied in infertile tropical soils, additional positive effects can be achieved, such as decreasing production costs and providing socio-economic benefits.
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Claims 7
Claim · model-written summary
Composted sewage sludge increased soil organic matter, pH and base chemistry in sugarcane soils.
Not reportedComparator
Verbatim
e0“Applying CSS in sugarcane-cultivated soils, improved the following: (i) soil organic matter, pH, the sum of bases, cation-exchange capacity, and base saturation;”
Claim · model-written summary
Composted sewage sludge improved soil cation-exchange capacity and base saturation.
- Taxon
- sugarcanee0
- Treatment
- CSSe0
- Outcome
- cation-exchange capacity, and base saturatione0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“Applying CSS in sugarcane-cultivated soils, improved the following: (i) soil organic matter, pH, the sum of bases, cation-exchange capacity, and base saturation;”
Claim · model-written summary
Composted sewage sludge improved overall P, K and Ca concentrations in sugarcane soils.
Not reportedComparator
Verbatim
e0“Applying CSS in sugarcane-cultivated soils, improved the following: (i) soil organic matter, pH, the sum of bases, cation-exchange capacity, and base saturation; (ii) overall nutrient concentrations (P, K, Ca, Mg, B, Cu, and Zn).”
Claim · model-written summary
Composted sewage sludge improved overall Mg, B and Cu concentrations in sugarcane soils.
Not reportedComparator
Verbatim
e0“Applying CSS in sugarcane-cultivated soils, improved the following: (i) soil organic matter, pH, the sum of bases, cation-exchange capacity, and base saturation; (ii) overall nutrient concentrations (P, K, Ca, Mg, B, Cu, and Zn).”
Claim · model-written summary
Composted sewage sludge improved overall Zn concentration in sugarcane soils.
Not reportedComparator
Verbatim
e0“Applying CSS in sugarcane-cultivated soils, improved the following: (i) soil organic matter, pH, the sum of bases, cation-exchange capacity, and base saturation; (ii) overall nutrient concentrations (P, K, Ca, Mg, B, Cu, and Zn).”
Claim · model-written summary
The 5.0 Mg ha−1 CSS treatments had the best performance.
Verbatim
e0“The treatments showing the best performances were those with 5.0 Mg ha−1 of CSS.”
t0“Sugarcane Production”
Claim · model-written summary
The authors conclude that composted sewage sludge could reduce mineral fertilizer requirements in sugarcane production.
Verbatim
e0“Composted sewage sludge has the potential for use as an organic natural fertilizer reducing the need for CMF.”
t0“Sugarcane Production”
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