Evaluation of green roof structures and substrates for Lactuca sativa L. in tropical conditions

Varela, A.; Sandoval-Albán, Alexandra; Muñoz, Macarena; Gómez, Alfonso Goméz; Bogoya, J. M.; Combariza, Germán

doi:10.1016/j.ufug.2021.127063

Cited by 10 publications

(3 citation statements)

References 56 publications

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“…Most of the articles are mainly focused on finding the viability of using various substrates in terms of substrate depth (Dunnett et al, 2008b;Schneider et al, 2014;Ondoño et al, 2016;Thomaidi et al, 2022), storm water retention (Bliss et al, 2009;Baryła et al, 2019;Wang J. et al, 2022;Yan et al, 2022) using alternative substrate materials (Razzaghmanesh et al, 2014), climatic conditions (Williams et al, 2010;Rayner et al, 2016;Koroxenidis and Theodosiou, 2021;Liberalesso et al, 2021;Varela et al, 2021) and amendments with substrates like organic matter (Emilsson, 2008;Thuring et al, 2010;Kanechi et al, 2014), pertlite (Ntoulas et al, 2013) and hydrogels (Savi et al, 2014). This review provides significant outputs related to substrate performance on vegetation by focusing on microclimatic features such as drought resistance and thermal conductivity.…”

Section: Discussionmentioning

confidence: 99%

Green roof substrates—A literature review

Kader

Chadalavada²,

Jaufer³

et al. 2022

Front. Built Environ.

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Green roofs are becoming increasingly popular in urban construction due to their wide array of benefits for creating a sustainable ecosystem. Many stakeholders invest in green roofs in the 21st century to enhance the environmental quality and mitigate urban ecological pollution. The substrate layer is the most important and critical component of green roof systems. The objective of the review study is to present the important information regarding the required elements that need to be considered for substrate selection of green roofs by critically reviewing the scientifically published articles. Research findings from past studies relevant to green roofs, vegetation and selective substrate parameters were extensively discussed under different topics related to water retention, drought resistance and related physico-chemical parameters. The generalities in past research articles were presented and special focus was provided on specific research articles those presented novelty regarding green roof substrates. Furthermore, the hotspots in all the considered research articles were commentatively identified and the appropriate solutions were evaluated. The critical review of published research articles indicates that most of the research on green roof substrates was conducted in either controlled laboratories or greenhouses and did not provide much importance to actual field tests. Therefore, these research findings are not sufficient to obtain the realistic field outcomes of the research. Future studies on green roof substrates should need to incorporate field experiments along with classical controlled tests by adhering to standard guidelines for assimilating climatic influences in substrates. Few studies have focused on dry climates, and further research needs to be conducted on dry climates due to their high susceptibility to drought and evapotranspiration. This manuscript would be the first review article that mainly focuses on substrates for green roofs, which is a novel aspect.

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Section: Discussionmentioning

confidence: 99%

Green roof substrates—A literature review

Kader

Chadalavada²,

Jaufer³

et al. 2022

Front. Built Environ.

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“…The substrate composition and compost dose affect the structure and function of microbial development [48]. After adding biochar to the green roof substrate, the yield of lettuce (Lactuca sativa) planted in tropical areas increased, and the physical and chemical properties and microbial properties of the final substrate changed [49]. In addition to the study on the changes of substrate characteristics and microbial characteristics, combined with substrate improvement, reducing the infiltration of nutrient elements in the substrate and preventing and controlling the eutrophication pollution of rainwater runoff have also been reported.…”

Section: Author Copy • Author Copy • Author Copy • Author Copy • Auth...mentioning

confidence: 99%

A Preliminary Exploration of Different Planting Combinations of Extensive Green Roof in Warm Temperate Semi Humid Climate Zone

Li¹,

Zhang²,

Chen³

et al. 2022

Pol. J. Environ. Stud.

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The construction methods of extensive green roof are different in different regional climate conditions, which are directly affected by weight load bearing capacity, planting substrate, plant species and other factors. In order to explore the planting types of extensive green roof suitable for warm temperate semi humid region, 12 plant species and 5 planting substrates were selected to conduct the experiment on the roof of the Architectural Art Museum (36°40'37"N, 117°11'25"E) of Shandong Jianzhu University, Licheng District, Jinan City, Shandong Province, China in March to October in 2019, and each plant species was planted on 5 planting substrates on the roof, respectively. By measuring the basic foundation layer load parameters, substrate bulk density and plant unit weight in the process of construction, the increase of planting weight load bearing capacity was calculated. After 4 weeks, the plant physiological indexes were tested. Finally, based on fuzzy mathematics subordinate function value method, combined with the plant physiological indexes, all combination types were comprehensively evaluated. The results showed that the unit weight of 12 plant species was divided into three categories, and the change trend of the weight load bearing capacity increase of each plant combined with the five planting substrates was similar to that of the five planting substrates. According to the comprehensive evaluation, 12 planting combinations were considered to be suitable for application on the extensive green roofs in warm temperate semi-humid areas. Compared with the plant weight, in the early stage of extensive green roof construction, the weight of planting substrate is the main factor leading to the change of weight load bearing capacity increase.

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“…But the use of chemicals is constrained by the short growing season of plants and the product part, which is represented in this vegetable crop by an aboveground system [4][5]. However, the plant needs nutrition, and in this case it cannot do without fertilizers [6][7][8]. Humic substances based preparations have been taking an increasing place in various fields of agriculture since the end of the twentieth century.…”

Section: Introductionmentioning

confidence: 99%

The effect of the humic preparation BioHumus Grand Flora Victoria on the lettuce productivity

Благородова

Varfolomeyeva

Zvyagina

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article presents the research results on the effect of the humic preparation BioHumus Grand Flora Victoria on the formation of lettuce crop in a winter glazed heated greenhouse. The sowing qualities of seeds (germination, germination energy) were analyzed when treated with the preparation in solution of different concentrations, while laboratory germination increased by 10-20%. Productivity indicators (the aboveground mass and root system, the number of leaves and their area) were studied when using leaf and root feeding of plants. It was found that the largest plant mass (82.5 g), leaf mass (53.1 g) and their area (806.5 cm2) were obtained by growing lettuce using leaf and root feeding with the 10% preparation solution. The use of leaf dressing alone 1.4-2.2 times increased the lettuce leaves area compared to the control. The biochemical composition of lettuce leaves during the harvesting period showed differences in the dry matter, total sugar, ascorbic acid content. The largest amount of dry matter (10.3%) and vitamin C was the variant with leaf feeding of plants with the 5% preparation solution. The 20% preparation solution, the highest in the experiment, restrained the rate of dry matter, fructose and ascorbic acid accumulation in the production.

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Evaluation of green roof structures and substrates for Lactuca sativa L. in tropical conditions

Cited by 10 publications

References 56 publications

Green roof substrates—A literature review

Green roof substrates—A literature review

A Preliminary Exploration of Different Planting Combinations of Extensive Green Roof in Warm Temperate Semi Humid Climate Zone

The effect of the humic preparation BioHumus Grand Flora Victoria on the lettuce productivity

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