Wood Ash as a Corrective and Fertilizer in Safflower Crop in Oxisol of Brazilian Cerrado

Abstract

This study aimed at estimating the wood ash as a corrective and fertilizer in the safflower crop. This study was done with respect to the development, growth, and production of safflower in response to the wood ash doses applied to Oxisol of the Brazilian Cerrado biome. Adopting the completely randomized design and using five wood ash doses (0, 8, 16, 24, 32 g dm -3 ) and six replicates, the experiments were performed under greenhouse conditions. Each experimental unit included a 2 dm 3 pot, filled with soil that had been incubated earlier for 30 days. The variables studied included soil pH, plant height (cm), stem diameter (mm), number of leaves (plant ) and root dry mass (g pot -1 ) Analysis of variance and subsequent regression test were performed for all the data using SISVAR software, at 5% probability for both. The variables internal and external diameter of the chapters and root volume showed no significant differences. The soil pH revealed a significant effect of the wood ash application tending towards linearity, as did the other vegetative variables of plant height, stem diameter, number of leaves and SPAD index. The productive constituents exhibited improved development when the wood ash was applied to the soil in doses of around 24 g dm -3 or more.

Wood ash as a vegetative-growth promoter in soils with subsurface compaction

“…After being collected, the soil was placed in 12 dm³ plastic bags and the respective doses of wood ash were added (8, 16, 24, and 32 g dm -3 ). Soil moisture was maintained at 60% of the maximum water retention capacity (monitored gravimetrically) for the reaction of the material, remaining sealed for approximately 30 days for the residue to react with the soil (Bonfim-Silva et al, 2018).…”

“…Studies with wood ash have verified, to some degree, positive alterations in chemical, physical, and biological properties of agricultural and forested soils (Bonfim-Silva et al, 2015;Symanowicz et al, 2018;Bang-Andreasen et al, 2021). Studies investigating wood ash effects on compacted and acidic soils, as is the case of many degraded areas in the Brazilian Cerrado, are still scarce (Bonfim-Silva et al, 2018;Martinez-Santos et al, 2019).…”

Ecotoxicological Evaluation of Forest Biomass Ash on Springtails and Earthworms in Subtropical Soils of Brazil

“…As the demand for bioenergy production increases, there is an increase in ash volume and, consequently, the concern with the correct disposal of this residue. The reuse of ash as fertilizer presents itself as an alternative of disposal, allowing the reduction in the use of chemical fertilizers (Bougnom & Insam, 2009;Cruz-Paredes et al, 2017), also functioning as soil corrective (Bonfim-Silva et al, 2018). According to Demirbas (2005) and Monti et al (2008), ash composition depends on the type of plant used, growth conditions and ash fraction, and the main elements in the composition of its biomass are Ca, Si, Al, Fe, Mg, Na, K, S and P (Cruz-Paredes et al, 2017;Khan et al, 2009;Liiri et al, 2002;Maeda et al, 2008).…”