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Evaluation of biosolids-enriched ammonium sulfate vs. ammonium sulfate in soils and for plant growth
Agronomy Journal ( IF 2.1 ) Pub Date : 2021-04-28 , DOI: 10.1002/agj2.20706
Sen H. Chien 1 , Upendra Singh 2 , Dorivar A. Ruiz Diaz 3
Affiliation  

Nitrogen (N) and sulfur (S) are essential nutrients for optimum plant growth. A commercial-grade biosolid-enriched ammonium sulfate (Bio/AMS) was evaluated and compared with a conventional, commercial-grade ammonium sulfate (AMS) to investigate the release patterns of N and S in soils. The laboratory-based studies included (a) characterization of fertilizer sources, (b) soil leaching columns with 0.01% citric acid in an acid soil, (c) soil incubation followed by 1 M KCl extraction in a neutral soil, and (d) NH3 volatilization measurements in an alkaline soil. With one exception, the results showed no significant difference in the amount or the rate of N or S released from each between the two products in all the studies. In that one exception, the Bio/AMS leached significantly less N after 56 d, but not before 14 d, than the conventional AMS application. In greenhouse-based evaluations, the Bio/AMS and AMS performed comparably at providing S nutrient to the biomass yield and S uptake by canola (Brassica napus L.) at maturity in neutral and alkaline soils. The studies also showed no significant N uptake differences between Bio/AMS and AMS by wheat (Triticum aestivum L.) biomass at maturity in acid and neutral soils. The results from these laboratory and greenhouse studies demonstrated that the Bio/AMS product is a simple physical mixture of biosolids with AMS.

中文翻译:

评价土壤中富含生物固体的硫酸铵与硫酸铵和植物生长

氮 (N) 和硫 (S) 是植物最佳生长的必需营养素。对商业级富含生物固体的硫酸铵 (Bio/AMS) 进行了评估,并与传统的商业级硫酸铵 (AMS) 进行了比较,以研究土壤中 N 和 S 的释放模式。基于实验室的研究包括 (a) 肥料来源的表征,(b) 在酸性土壤中使用 0.01% 柠檬酸的土壤浸出柱,(c) 土壤培养,然后在中性土壤中提取1 M KCl,以及 (d) NH 3碱性土壤中的挥发测量。除了一个例外,结果显示,在所有研究中,两种产品在每种产品中释放的 N 或 S 的量或速率没有显着差异。在那个例外中,Bio/AMS 在 56 天后浸出的 N 明显少于传统 AMS 应用,但在 14 天前则不然。在基于温室的评估中,Bio/AMS 和 AMS 在为中性和碱性土壤中成熟的油菜 ( Brassica napus L.)的生物量产量和 S 吸收提供 S 养分方面表现相当。研究还表明,小麦 ( Triticum aestivumL.) 在酸性和中性土壤中成熟时的生物量。这些实验室和温室研究的结果表明,Bio/AMS 产品是生物固体与 AMS 的简单物理混合物。
更新日期:2021-04-28
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