Green approaches for improving plant performance using natural supplementations are highly seeking. Following a preliminary study conducted on contaminated saline (EC = 7.75 dS m⁻¹) and normal (EC = 1.4 dS m⁻¹) soils, two main field trials were conducted to study the potential effects of licorice root (LRE; 0.5%) and moringa seed (MSE; 0.5%) extracts, supplemented to soil through irrigation water (SA) and/or as foliar spray (FS), on performance, physio-biochemical components, antioxidant defense system, and contaminants contents of Capsicum annuum plants grown on heavy metals-contaminated saline soil. Both extracts were applied in single treatments such as LRE-SA, MSE-SA, LRE-FS, and MSE-FS or in integrations like LRE-SA+LRE-FS, LRE-SA+MSE-FS, MSE-SA+LRE-FS, and MSE-SA+MSE-FS. The preliminary study results showed significant reductions in plant performance (growth and yield), chlorophylls content and significant increase in Cd content due to heavy metals and salt stress. However, LRE and MSE applied singly or in combinations positively modified these parameters compared to the control (SA and FS were applied with tap water). On the other hand, these parameters were not responded to LRE and/or MSE applications on the normal soil. The main studies results showed that all single or integrative treatments significantly increased plant growth and yield, leaf contents of leaf photosynthetic pigments, free proline, total soluble sugars, N, P, and K⁺, ratio of K⁺/Na⁺, and activities of CAT, POX, APX, SOD, and GR. In contrast, contaminants; Na⁺, Cd, Cu, Pb and Ni contents in plant leaves and fruits were significantly reduced on heavy metals-contaminated saline soil compared to the control. Additionally, all integrative treatments significantly exceeded all single treatments in this concern. The integrative MSE-SA+LRE-FS was the best treatment that is recommended to be used to maximize pepper plant performances and minimize plant contaminant contents on contaminated saline soils.

人们正在寻求使用天然补充剂来改善植物性能的绿色方法。在对受污染的盐水（EC = 7.75 dS m ^-1）和普通土壤（EC = 1.4 dS m ^-1）进行的初步研究之后，进行了两项主要的田间试验，以研究甘草根的潜在影响（LRE; 0.5％）和辣木种子（MSE; 0.5％）提取物，通过灌溉水（SA）和/或叶面喷雾（FS）补充土壤，从而改善辣椒的性能，生理生化成分，抗氧化防御系统和污染物含量在重金属污染的盐渍土壤上生长的植物。两种提取物均用于单一处理（例如LRE-SA，MSE-SA，LRE-FS和MSE-FS）或整合处理（例如LRE-SA + LRE-FS，LRE-SA + MSE-FS，MSE-SA + LRE） -FS和MSE-SA + MSE-FS。初步研究结果表明，由于重金属和盐胁迫，植物性能（生长和产量），叶绿素含量和Cd含量显着降低。但是，与对照相比，单独使用LRE和MSE或组合使用对这些参数有积极的影响（SA和FS分别用自来水施用）。另一方面，这些参数对正常土壤上的LRE和/或MSE应用没有反应。主要研究结果表明，所有单一或综合处理均显着提高了植物的生长和产量，⁺，K ⁺ / Na ^+的比例以及CAT，POX，APX，SOD和GR的活性。相反，污染物；与对照相比，在重金属污染的盐渍土壤上，植物叶片和果实中的Na ⁺，Cd，Cu，Pb和Ni含量显着降低。此外，在此方面，所有综合治疗都大大超过了所有单一治疗。MSE-SA + LRE-FS集成处理是最好的处理方法，建议将其用于最大化胡椒植物的性能，并使污染的盐渍土壤上的植物污染物含量降至最低。