Impact of substrate depth and fertilizer type on growth, production, quality characteristics and heavy metal contamination of tomato and lettuce grown on urban green roofs

Nektarios, Panayiotis A.; Ischyropoulos, Dimitris; Kalozoumis, Panagiotis; Savvas, Dimitrios; Yfantopoulos, Dionisios; Ntoulas, Nikolaos; Tsaniklidis, Georgios; Goumenaki, Eleni

doi:10.1016/j.scienta.2022.111318

Cited by 11 publications

(4 citation statements)

References 65 publications

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“…Fisher's Least Significant Difference (LSD) in one of the treatments significant differences in their multiple response variables of lettuce growth and yield, although, the interactions between treatments or factors were not significant (Mpai et al, 2022;Nektarios et al, 2022). The theory indicates that the proposed multivariate model must meet the assumptions of normality and multivariate homoscedasticity of the residuals (Cuadras, 2014).…”

Section: Results Y Discussionmentioning

confidence: 99%

Efecto multivariado de mezclas de fertilizantes orgánicos e inorgánicos sobre el crecimiento de Lactuca sativa L.

Gonzales¹,

Medina

López³

2023

Manglar

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The objective of this research was to evaluate the multivariate effect of organic and inorganic fertilizer mixtures on growth of Lactuca sativa L. For this purpose, a complete multivariate randomized design was performed, with 5 replicates in 20 parcels, to which the treatments were randomly distributed. The data on the number of leaves per plant and the height of lettuce was obtained at harvest in the study field where the experiment was conducted. The compliance with the basic assumptions of normality and multivariate homogeneity of the experimental residuals was significantly demonstrated, evidencing the adequacy of the model. Likewise, the levels of organic and inorganic fertilizers had significant effects on the number of leaves and height of the lettuce plant collectively and individually.

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Section: Results Y Discussionmentioning

confidence: 99%

Efecto multivariado de mezclas de fertilizantes orgánicos e inorgánicos sobre el crecimiento de Lactuca sativa L.

Gonzales¹,

Medina

López³

2023

Manglar

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“…Furthermore, when edible plants are decided to be planted on GR, the importance of substrate layer design would be greater. Since it is indicated that plants’ nutrient levels are affected by GR substrate, and Nitrates, Aluminum, Magnesium, Lead, and Selenium might lead to safety issues for producing crops like lettuce and tomato on GRs (Nektarios et al 2022 ).…”

Section: Resultsmentioning

confidence: 99%

Sustainable green roofs: a comprehensive review of influential factors

Shahmohammad

Hosseinzadeh

Dvorak

et al. 2022

Environ Sci Pollut Res

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Green roofs have gained much attention as a modern roofing surface due to their potential to deliver many environmental and social benefits. Studies have indicated that different GR designs deliver different ecosystem services, and there are important factors that affect GR performance. This article reviewed significant factors that influence GR performance and sustainability. Substrate and drainage layer material choice significantly affects stormwater retention potential, leachate quality, plant survival, and determines GR environmental footprints. Subsequently, type of plants, their form, and kinds used on GRs impact GR ecosystem function. Leaf area is the most studied trait due to its influence on the cooling potential and energy performance. In order to achieve a sustainable GR, it is essential to select the type of plants that have a high survival rate. Perennial herbs, particularly forbs and grass as dominant groups, are heat and drought tolerant, which make them suitable in GR experiment. Furthermore, selecting a suitable irrigation system is as important as two other factors for having a sustainable GR. Irrigation is essential for plant survival, and due to the current pressure on valuable water sources, it is important to select a sustainable irrigation system. This review presents three sustainable irrigation methods: (i) employing alternative water sources such as rainwater, greywater, and atmospheric water; (ii) smart irrigation and monitoring; and (iii) using adaptive materials and additives that improve GR water use. This review sheds new insights on the design of high-performance, sustainable GRs and provides guidance for the legislation of sustainable GR.

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“…It is believed that the quality indicators of vegetables include taste indicators, nutritional indicators, and constraint indicators [ 25 , 26 ]. Due to the difficulty in quantifying taste indicators, this study selected soluble solids as the quality indicator that reflects taste.…”

Section: Discussionmentioning

confidence: 99%

Optimization of a Lower Irrigation Limit for Lettuce Based on Comprehensive Evaluation: A Field Experiment

Hou,

Zhang,

Shaghaleh

et al. 2024

Plants

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When optimizing irrigation methods, much consideration is given to crop growth indicators while less attention has been paid to soil’s gaseous carbon (C) and nitrogen (N) emission indicators. Therefore, adopting an irrigation practice that can reduce emissions while maintaining crop yield and quality is of great interest. Thus, open-field experiments were conducted from September 2020 to January 2022 using a single-factor randomized block design with three replications. The lettuce plants (“Feiqiao Lettuce No.1”) were grown using four different irrigation methods established by setting the lower limit of drip irrigation to 75%, 65%, and 55% of soil water content at field capacity corresponding to DR1, DR2, and DR3, respectively. Furrow irrigation (FI) was used as a control. Crop growth indicators and soil gas emissions were observed. Results showed that the mean lettuce yield under DR1 (64,500 kg/ha) was the highest, and it was lower under DR3 and FI. The lettuces under DR3 showed greater concentrations of crude fiber, vitamin C, and soluble sugar, and a greater nitrate concentration. Compared with FI, the DR treatments were more conducive to improving the comprehensive quality of lettuce, including the measured appearance and nutritional quality. Among all the irrigation methods, FI had the maximum cracking rate of lettuce, reaching 25.3%, 24.6%, and 22.7%, respectively, for the three continuous seasons. The stem cracking rates under DR2 were the lowest—only 10.1%, 14.4%, and 8.2%, respectively, which were decreased to nearly half compared with FI. The entropy model detected that the weight coefficient evaluation value of DR2 was the greatest, reaching 0.93, indicating that the DR2 method has the optimal benefits under comprehensive consideration of water saving, yield increase, quality improvement, and emission reduction.

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Impact of substrate depth and fertilizer type on growth, production, quality characteristics and heavy metal contamination of tomato and lettuce grown on urban green roofs

Cited by 11 publications

References 65 publications

Efecto multivariado de mezclas de fertilizantes orgánicos e inorgánicos sobre el crecimiento de Lactuca sativa L.

Efecto multivariado de mezclas de fertilizantes orgánicos e inorgánicos sobre el crecimiento de Lactuca sativa L.

Sustainable green roofs: a comprehensive review of influential factors

Optimization of a Lower Irrigation Limit for Lettuce Based on Comprehensive Evaluation: A Field Experiment

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