Synthesis of Elemental- and Nano-sulfur-enriched Bio-organic Phosphate Composites, and Their Impact on Nutrients Bioavailability and Maize Growth

Amelioration with nano-sulfur suspensions mitigates calcium carbonate of calcareous sandy soil

“…The pH change induced by the application of NS suspension could be also due to NS oxidation process. The NS particles are rapidly oxidized by Soxidizing bacteria to hydrogen ions and sulphuric acid within a few weeks under optimal conditions (Shakoor et al 2023;Yazhini et al 2023). The hydrogen ions and sulphuric acid's action causes the relatively high pH value of calcareous sandy soil to be reduced (Akay et al 2019;Amin and Mihoub 2021).…”

“…Furthermore, the application of NS at a rate of 15 kg ha -1 on the saline soil was the best in reducing pH, EC, bulk density, hydraulic conductivity, and total porosity, while soil available macro-and micro-nutrients increased (Esmaeil et al 2020). In addition, during an incubation period of 60 days, the application of NSenriched bio-organic phosphate composites on the calcareous soil at a rate of 50 kg ha -1 rendered the high K and S concentrations due to lower soil pH (Shakoor et al 2023).…”

Unlocking the potential of nanoscale sulfur in sustainable agriculture

“…The mechanisms underlying these impacts include enhancement of essential biological processes in plants such as photosynthesis and nutrient absorption, as well as increased resilience to stress by modulating antioxidative pathways or phytohormones. 63–65 Such impacts are likely driven by altered activity at the genetic, protein or metabolite level. In terms of application as a pesticide, nano-sulfur can damage bacteria and fungi through multiple antimicrobial mechanisms.…”

“… 62 Studies on the effects of elemental sulfur and nano-sulfur bio-organic phosphate composites on maize growth demonstrated that nano-sulfur distributed evenly in the soil and around the roots, reducing soil pH and increasing nutrient bioavailability, thereby promoting plant growth. 63 Subramanian et al reported that the total dry matter production (DMP) of sunflower treated with 40 kg per ha nano-sulfur (86.1 and 88.7 g per plant) was significantly higher than that of sunflower treated with 20 kg per ha nano-sulfur (76.3 and 78.1 g per plant) and gypsum (S 40 kg ha −1 ) (61.3 g per plant) in the absence and presence of sulfur oxidizing bacterial (SOB) inoculum. 12 The significant increase in DMP was attributed to the slow release of sulfur.…”

Characterization and Assessment of Synthesized Nano Sulphur in Combination with Organic Amendment on the Availability of Sulphur in Calcareous Soil

“…In sulphur insufficient soils, elemental form of sulphur (S) is ineffective, instead it must be first transformed into sulphate sulphur by soil bacteria such as sulphur oxidising bacteria. S is typically converted to sulphate faster when it is in smaller particle sizes and mixed with a substrate or soil (Shakoor et al, 2023). By incorporating organic amendments, sulphur oxidation and mineralization processes worked together to increase the amount of sulphur that was available to plants from elemental sulphur, a slow-releasing S source (Malik et al, 2021).…”