Abstract
The aquatic macrophytes removed from hydroelectric power plants, as well as boiler ash derived from burning sugarcane bagasse can provide nutrients and recover degraded soils more quickly. Thus, this study aimed to evaluate the chemical attributes of a degraded soil in recovery process with mechanical preparation, with or without addition of organic residue (aquatic macrophytes) or agroindustrial residue (ash from sugarcane bagasse), compared to a degraded area without interference in the time of soil removal and in a conserved Cerrado area. The experimental design was a randomized block with four replications. The treatments were: conserved Cerrado soil (T1), area of degraded soil without human intervention since their degradation (T2), soil with mechanized preparation without addition of residue (T3), soil with mechanized preparation and addition of 32 Mg ha-1 of organic residue (T4), soil with mechanical preparation and addition of 45 Mg ha-1 of agroindustrial residue (T5). The orthogonal contrasts analyzed were C1 [(T2+T3+T4+T5)/4 -T1], C2 [(T2+T3) - (T4+T5)], C3 [(T2) -(T3)] and C4 [(T4) - (T5)]. In general, the chemical attributes of degraded soil increased after the incorporation of organic and agroindustrial residue, which is higher than the soil of the conserved Cerrado area. The boiler ash contributed most, to increase the nutrient content and fertility of the degraded soil. Key words: Aquatic macrophytes, ash from sugarcane bagasse, degraded soil, fertility, soil tillage.
Highlights
The objective of this work was to evaluate the chemical attributes of a degraded soil in the recovery process with mechanical treatment of the soil, with and without addition of organic and agroindustrial residues, in comparison to a degraded area without any interference since soil removal and a conserved Cerrado area, contribute to the rapid recovery of degraded soils
The experimental area design was a randomized block with agroindustrial residue levels (AR) applied in bands, in a factorial 3 x 4, 3 doses (0, 16 and 32 Mg ha-1) of organic residue (OR) - macrophytes and 4 doses (0, 15, 30 and 45 Mg ha-1) of agroindustrial residue (RA) - ash from sugarcane bagasse
Feitosa et al (2009) mentioned that, the boiler ash derived from burning sugarcane bagasse is sources for macro and micronutrients
Summary
A great diversity of habitats, high species richness and an elevated level of threats lead to the inclusion of the Cerrado in the list of the world’s critical areas for the conservation of biodiversity, the hotspots (Myers et al, 2000; Sloan et al, 2014). In 1960s, the hydroelectric power plant of Ilha Solteira.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
