On the other hand, straw biochar application increase soil pH due to its liming effect on soil. Its strong alkalinity allows straw biochar to ameliorate soil acidity (pH>7, Table S6). As shown in Table S6, straw biochar is alkaline. Thus, straw biochar utilization could increase soil pH.

Nov 1, 2023 · The critical soil pH in dry lands, above which straw return resulted in pH decline, was 6.7 (5.9–7.1, 95% CI). The corresponding critical soil pH for paddy lands was 5.4 (4.5–5.9, 95% CI). This indicates significantly ( p < 0.01) higher risk …

Jan 3, 2025 · The study observed that straw return positively affected soil pH levels, and available P. N + P and N + P + K fertilization without straw led to a significant accumulation of total K. However, the addition of straw resulted in reduced NH 4 -N and NO 3 -N levels.

Jan 1, 2021 · Straw return impacts metal mobility by changing soil pH, Eh, and POM/DOM levels. Straw return increases metal bioavailability by forming soluble metal-DOM complexes. Straw-derived DOM enhances microbial activities and thus Hg/As methylation.

Oct 11, 2024 · The pH of biochar was significantly larger than that of the respective straws (by 2.88–3.14 pH units) and following the high alkalinity of biochar, the concentrations of K +, Ca 2+, and Mg 2+ were significantly higher than that of the corresponding straw.

The effects of straw return on pH in soil are shown in Fig. 2 (a, b, c). Different trends were noticed. The value of pH in soil varied with time during the 60 days of incubation.

The application of wheat straw (SXM) and rape straw (SYC) to saline–alkali soil demonstrated notable effects on soil pH and total salinity. Both straw treatments resulted in reductions in soil pH and total salinity, with a more pronounced impact on salinity, as illustrated in Figure 1 A,B.

2 days ago · To alleviate soil phosphorus deficiency, integrating straw-derived biochar with phosphate-solubilizing bacteria (PSB) has been recognized as a promising solution and is gaining growing attention. However, the mechanisms of bacterial immobilization and the influences of the physicochemical attributes of biochar remain unclear. In this study, we investigated the single-cell interactions of gram ...

Jan 9, 2023 · Rice straw returning affects soil pH, N, P, K, organic matter, rice biomass, and REE content. Different rice straw returning amounts and fertilization methods have different effects.

Jan 17, 2025 · Global meta-analysis revealed that returning crop straw to agricultural soils, a practice widely advocated for its ecological advantages, can acidify the soil. The research …