ABSTRACT Effect of slag-based gypsum (SBG) and commercial gypsum (CG) on maize was investigated in acidic and neutral soils. A randomized complete block design (RCBD) with seven treatments consisting of three levels (150, 450, and 750 kg ha−1) of SBG and CG with recommended dose of fertilizer (RDF) and one control was maintained. Application of SBG @750 kg ha−1 recorded significantly higher (8.61 and 8.69 t ha−1, respectively) cob yield of maize compared to CG and control treatments in both soil condition. Increased levels of SBG application increased soil pH and EC in both the soils, but decreased with the application of CG. Application of 750 kg SBG ha−1 recorded significantly higher soil available nutrients like phosphorus in acidic soil and potassium in neutral soil. Higher exchangeable calcium and magnesium in acidic soil and exchangeable calcium in neutral soil were recorded with the application of CG @750 kg ha−1. Available sulfur was significantly higher with CG @750 kg ha−1 applied treatment in both soils. CaCl2Si content in acidic soil varied significantly and recorded higher with application of SBG, while CaCl2Si content in neutral soil and AASi in both soils had no significant effect by application of SBG. Significantly higher DTPA extractable micronutrients in acidic and neutral soil were noticed in SBG @750 kg ha−1 applied treatment. However, application of SBG had no significant effect on iron and copper content in neutral soil. Higher uptake of nutrients was recorded with 750 kg SBG ha−1 compared CG applied and other treatments.

中文翻译：

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酸性和中性土壤下矿渣石膏对玉米产量和有效土壤养分的影响

摘要 在酸性和中性土壤中研究了矿渣石膏 (SBG) 和商品石膏 (CG) 对玉米的影响。随机完整区组设计 (RCBD) 包括七个处理，由三个水平（150、450 和 750 kg ha-1）的 SBG 和 CG 和推荐剂量的肥料 (RDF) 和一个对照组成。在两种土壤条件下，与 CG 和对照处理相比，SBG @750 kg ha-1 的应用记录了显着更高（分别为 8.61 和 8.69 t ha-1）玉米芯产量。SBG 施用量的增加增加了两种土壤中土壤的 pH 值和 EC，但随着 CG 的施用而降低。施用 750 kg SBG ha-1 记录显着更高的土壤有效养分，如酸性土壤中的磷和中性土壤中的钾。施用CG @750 kg ha-1 记录了酸性土壤中较高的可交换钙和镁以及中性土壤中的可交换钙。在两种土壤中施用 CG @750 kg ha-1 处理的有效硫显着更高。酸性土壤中CaCl2Si含量随SBG的施用而显着变化并记录较高，而中性土壤中的CaCl2Si含量和两种土壤中的AASi均不受施用SBG的影响。在 SBG @750 kg ha-1 应用处理中注意到酸性和中性土壤中显着更高的 DTPA 可提取微量营养素。但施用SBG对中性土壤中铁、铜含量无显着影响。与施用 CG 和其他处理相比，750 kg SBG ha-1 记录了更高的营养吸收。