Manure-derived biochars have a fertilizer potential as pyrolysis concentrates non-volatile nutrients. The addition of magnesium (Mg) to poultry manure enhances its Mg/Ca ratio and could increase soluble P by phosphate-solubilizing bacteria (PSB). Our objective was to assess the potential of PSB strains to solubilize P from both unenriched and Mg-enriched biochar and to evaluate the growth of maize in an Oxisol fertilized with biochar (100 mg kg⁻¹ total P) to satisfy plant P needs. We examined the strains: Paraburkholderia fungorum UFLA 04–155, Pseudomonas anuradhapurensis UFPI B5-8A, Paenibacillus chondroitinus UFLA 03–116, Acinetobacter pittii UFLA 03–09, and Rhizobium tropici CIAT 899. Biochar was made from poultry manure at temperatures of 350 °C, 500 °C, and 650 °C. Maize growth and P uptake were assessed in plants after 15 and 30 days under greenhouse conditions. The strain P. anuradhapurensis UFPI B5-8A significantly released more P from Mg-biochar (82% of the total P added) than from the unenriched biochar (74% of the total P added). Furthermore, this strain released tartaric and gluconic acids when mixed with the Mg-biochar, whereas malic acid was primarily exuded when applied to unenriched biochar. Similarly, P. anuradhapurensis UFPI B5-8A inoculation or Mg enrichment resulted in a 20% increase in P uptake by maize compared to unenriched biochar. Therefore, a synergistic approach using Mg-biochar and inoculation with PSB increases phosphate availability from poultry manure and maize P use efficiency.

粪便衍生的生物炭具有肥料潜力，因为热解可浓缩非挥发性养分。在家禽粪便中添加镁（Mg）可提高其镁/钙比，并可通过解磷细菌（PSB）增加可溶性磷。^{我们的目标是评估 PSB 菌株从未富集和富镁生物炭中溶解磷的潜力，并评估玉米在施有生物炭（100 mg kg -1}总磷）的Oxisol 中的生长以满足植物磷需求。我们检查了菌株：Paraburkholderia fungorum UFLA 04–155、Pseudomonas anuradhapurensis UFPI B5-8A、Paenibacillus chondroitinus UFLA 03–116、Acinetobacterpittii UFLA 03–09 和Rhizobium tropici CIAT 899。生物炭由家禽粪便在 350 ° 的温度下制成。 C、500°C 和 650°C。在温室条件下15天和30天后评估植物的玉米生长和磷吸收。菌株P. anuradhapurensis UFPI B5-8A 从镁生物炭中释放的磷（占添加总磷的 82%）显着高于未富集生物炭（占添加总磷的 74%）。此外，当与镁生物炭混合时，该菌株释放酒石酸和葡萄糖酸，而当应用于未富集的生物炭时，主要渗出苹果酸。同样，与未富集的生物炭相比，P. anuradhapurensis UFPI B5-8A 接种或镁富集导致玉米对磷的吸收增加了 20%。因此，使用镁生物炭和接种 PSB 的协同方法可以提高家禽粪便中磷酸盐的利用率和玉米磷的利用效率。