Carbon Mineralization Dynamics of Organic Materials and Their Usage in the Restoration of Degraded Tropical Tea-Growing Soil

Abstract

Understanding carbon mineralization dynamics of organic amendments is essential to restore degraded lands. This study focused on the restoration potentials of tea-growing soils using organic materials available in tea ecosystems. The Selangor-Briah soil series association (Typic Endoaquepts) consisted of a high- (soil A) and a low-carbon (soil B) soils were incubated with different organic materials and released carbon dioxide (CO2) measured. Two kinetic models were applied to depict the mineralization process. Soil health parameters including microbial biomass carbon and nitrogen, dehydrogenase and catalase activities were determined to assess the restoration potentials. The parallel first-order kinetic model fitted well for all amendments. Gliricidia markedly enhanced the net cumulative CO2 flux in both soils. Charged biochar, tea waste and Gliricidia improved the microbial biomass carbon by 79–84% in soil A and 82–93% in soil B, respectively. Microbial quotients and biomass nitrogen were increased over 50 and 70% in amended soils, respectively. Dehydrogenase activity was significantly accelerated over 80% by compost, charged biochar and tea waste. Charged biochar remarkably increased the soil catalase activity by 141%. Microbial biomass, dehydrogenase and catalase activities, and cumulative CO2 flux were positively correlated (r > 0.452) with one another. The studied amendments showed greater potential in improving the soil quality, while charged biochar, raw biochar and compost enrich the soil recalcitrant C pool ensuring the soil health in long term. Even though biochar sequesters carbon, it has to be charged with nutrients to achieve the soil restoration goals.

Effects of Organic Amendments and Mineral Fertilizers on Optimizing Nutrient Cycling in Alkaline Soil

“…The enhancement of soil health is facilitated by its elemental makeup, which also has the ability to raise pH, hold onto water, and bind nutrients and metals in its functional groups [12]. The diverse chemical and physical properties of biochar make it a valuable amendment for restoring soil health [13]. Incorporating biochar into the soil is considered a potential strategy for consistently enhancing soil health and promoting crop growth [14].…”

Heteroatoms (-B-N-) doped graphene nanoflakes for the sensor mechanism of Carbon and Nitrogen dioxide adsorption: Approach from Theoretical Calculation

“…There is a considerable goal to reduce greenhouse gas emissions by 80% by 2050 [12]. Many approaches have been employed in removing CO 2 and NO 2 from the ecosystem, among these approaches are; forests, farms, Bio-energy with carbon 5g captured and storage (BECCS), direct air capture, carbon mineralization, Ocean-based concepts, trapping of greenhouse gases in one of the climate change strategies [13][14][15].…”

Bagazo y composta de bagazo de agave tequilero en suelos contrastantes: 3. Respiración del suelo y emisiones de gases efecto invernadero

“…Co values, mineralization constants (k), and their product. los tratamientos de bagazos BD y BA concuerdan con lo reportado porLiyanage et al (2021), quienes encontraron que los residuos de abono verde de Gliricidia presenta una descomposición más acelerada y alta en k y el C o .Respecto a los valores de C o *k son similares a los encontrados por Nourbakhsh y Sheikh (…”