Dotaniya ML, Meena MD, Choudhary RL, Meena MK, Meena VD, et al. (2024) Dynamics of major plant nutrients and enzymatic activities in soil influenced by application of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More and organic waste. PLOS ONE 19(10): e0307487.https://doi.org/10.1371/journal.pone.0307487

A recent study investigated how biochar, farmyard manure (FYM), and pressmud (a sugarcane byproduct) can improve nutrient availability and microbial health in saline soils. Salinity often impedes plant growth by restricting water and nutrient uptake, so enhancing soil quality is critical for sustainable agriculture, particularly in saline-prone regions.

The study, conducted over a year, tested nine combinations of organic amendments. It found that the combined use of biochar and FYM (5 tons per hectare each) had the most significant effects on soil health. This combination improved soil organic carbon and available nitrogen levels while enhancing microbial enzyme activities that support nutrient cycling. Treatments with only biochar (10 tons per hectare) showed the highest increase in potassium and sulfur availability, nutrients vital for plant resilience in saline soils.

Biochar’s porous structure helps retain nutrients and moisture, enhancing soil microbial activity and enzyme function, such as dehydrogenase and alkaline phosphatase, which are essential for breaking down organic matter. When paired with FYM, biochar supports a balance of carbon sources, creating a favorable environment for microbes that further improves soil structure and fertility.

This research underscores the potential of organic amendments, especially biochar combined with manure, to rejuvenate degraded soils. Future research on cost-effective, locally sourced organic materials could help refine these soil restoration practices, benefiting both soil health and agricultural productivity.