Effect of different soil amendments on soil buffering capacity

Abstract

The buffering capacity of the soil is a very important property of the soil, which determines the ability of the soil to resist external influences, especially changes in pH and thus create good living conditions for plants and microorganisms in the soil. The buffering capacity thus significantly contributes to maintaining the health and quality of the soil. Buffering capacity is an important indicator of soil quality, because it is related to the overall condition of the soil ecosystem and other soil properties. The goal of this paper is to determine the effect of applying different soil amendments on the soils, 10 years after application. We compared the effect of 6 different treatments in closed plots: Natural conditions (N = control); Bare soil (B); Straw mulching (S); Pine mulch (P); TerraCottem hydroabsorbent polymers (H); Prescribed burn (F); and Sewage sludge (M). Our results have shown that the application of different amedments leads to an effect on the plowing capacity of the soil. While in the case of the control variant (Natural conditions, N) the buffering capacity of the soil was measured at 144.93 ± 0.25, the addition of different amendments decreased the buffering capacity in the following order: Bare soil (B) 142.73±0.21 > TerraCotem hydroaborbent polymer (H) 142.23±.15 > Pine mulch (P) 140.40±0.30, Prescribed burn (F) 138.20±0.30, Sludge (S) 127.47±0.15. In the case of all variants, these are statistically significant differences (p ≤ 0.05). Thus, soil amendments have been shown to have a statistically significant effect on soil buffering capacity.

Improving Soil Fertility and Maize Growth in Suboptimal Land Through Application of Humic Acid

“…The effect of temperature and water content indirectly affects the activity of microorganisms and the decomposition process of soil organic matter. Furthermore, along with the increase in soil organic matter, the natural buffering capacity and CEC of the soil also increases, resulting in an increase in pH in the soil which tends to be acidic through the mechanism of releasing carboxyl and hydroxyl groups in humus [35]. Likewise, with soil texture, the indirect effect is related to the content of clay and organic matter in the soil, where clay soils tend to be more resistant to changes in pH than sandy soils because they have a higher buffer capacity.…”

Enzymatic Potential of Filamentous Fungi as a Biological Pretreatment for Acidogenic Fermentation of Coffee Waste

“…As expected, the pH dropped in most assays due to the production of SCOAs. The decrease was lower for the assays with BH due to the alkali nature of the pretreatment, which probably produces some compounds that could act as buffering agents [ 22 , 43 ].…”

The Effect of Adding a Gypsum-CKD Mixture on some Physical and Chemical Properties of Sand Dunes

“…This change is attributed to the soil's buffering capacity, which refers to its ability to maintain a relatively stable acidity level despite factors that can increase or decrease soil acidity or alkalinity. The buffering capacity of the soil depends on the type of minerals, organic matter content, and the added materials intended to improve its properties [11].…”