Investigation of negative effects of rice husk silica on komatsuna growth using three experiments

Abstract

Purpose This study aims to evaluate the potential negative effects of rice husk as a source of fertilizer on plant growth. Methods Growth tests were conducted on komatsuna (Brassica rapa var. perviridis) using three types of experiment. A pot experiment was conducted to compare different fertilizers on an individual basis. A second pot experiment was conducted to compare different mixtures of fertilizers. Finally, a field experiment was performed to determine the effects of the application of different quantities of silica. Results The results showed that komatsuna grew better with the application of silica mixed with fertilizer, and that there was an optimal quantity of silica to be used, when used on its own. It was found that, in all cases, the silica in the rice husk ash did not have any measurable negative effects on the growth of the komatsuna. Conclusions We, therefore, conclude that rice husk silica can undoubtedly be used for plant cultivation.

Compost Quality Indexes (CQIs) of Biosolids Using Physicochemical, Biological and Ecophysiological Indicators: C and N Mineralization Dynamics

“…The BM samples were transported to the laboratory in plastic bags with subsequent drying at room T. For better particle size control, the samples were crushed to 5 mm. Dried rice husks were used as a bulking agent (BA) due to their high silica content, giving high mechanical resistance to microbial degradation [17].…”

Renewing the potential of rice crop residues as value-added products in the cosmetics industry

“…The second main compound in rice plant residues is ash, which has great potential in the cosmetics industry due to its high silicate content but is more widely used in other industries [ [11] , [12] , [13] ]. Silicates are a wide series of related compounds whose properties vary depending on the characteristics of the method and the components used to obtain their salts [ 14 ]. Structurally, in the solid state, sodium silicates can occur in different forms, established in phases or polymeric layers of complex polymorphism from sodium cations, of which the most common phases are δ, α, and β [ 15 ].…”

Synthesis of Copolymer from 1,3,5-Trioxane and -Caprolactone Catalysed by Treated Bentonite as Eco-Catalyst

“…12,13 The mechanism of RH thermochemical conversion during heat treatment and development of production technology for the silicon(IV) oxide is described by many researchers. [14][15][16][17] Over the last 15 years, an increase in the number of publications on the use of ingredients derived from rice husk for the production of tires and rubber products has been observed. These are short reports on the use of carbonized RH as a nanostructured filler, 18 products of heattreated (873-1073 K) rice husk in elastomeric compositions based on butadiene-styrene rubber, 19 silica (as a product of rice husk combustion) for fuel-saving tires (Italian company Pirelli 20 ).…”