Extension and evaluation of a model for automatic drainage solution management in tomato crops grown in semi-closed hydroponic systems

Katsoulas, Ν.; Savvas, Dimitrios; Kitta, E.; Bartzanas, Thomas; Kittas, C.

doi:10.1016/j.compag.2015.01.014

Cited by 47 publications

(30 citation statements)

References 28 publications

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“…However, the water used for irrigation is often characterized by high salt concentrations, including, not only Na + and Cl − , but also Ca 2+ , Mg 2+ , and SO 4 2− [20]. Hence, in most cases, the quality of the available irrigation water in terms of mineral composition is incompatible with the application of completely closed systems [21]. In other cases, drainage water should be subjected to desalination, including high-performance denitrification and dephosphatation prior to being introduced into the natural system or sewage system.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe

Mielcarek

Rodziewicz

Janczukowicz

et al. 2019

Water

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Soilless plantations under cover constitute a significant part of horticulture. This study aimed at determining the qualitative composition of wastewater generated from the soilless cultivation of tomato under cover. This is important for managing the wastewater, which may be recirculated to allow the or employ a partial or complete recovery of minerals. Two plantations located in north-eastern Poland, which differed in the type of substratum (coconut fiber or rockwool), were studied. The generated wastewater was characterized by a low content of organic matter and a high concentration of total nitrogen (TN), total phosphorus (TP), and salinity (EC). Over 99% of the TN was constituted by nitrates. The chemical oxygen demand (COD) changed from 50.07 to 75.82 mgO 2 ·L −1 (greenhouse 1), and from 37.35 to 78.12 mgO 2 ·L −1 (greenhouse 2); the content of TN changed from 403.59 to 614.89 mgN·L −1 (greenhouse 1), and from 270.00 to 577.40 mgN·L −1 (greenhouse 2); that of TP changed from 35.44 to 78.00 mgP·L −1 (greenhouse 1), and from 54.10 to 104.00 mgP·L −1 (greenhouse 2); and the EC changed from 3.53 to 6.93 mS·cm −1 (greenhouse 1), and from 4.94 to 6.94 mS·cm −1 (greenhouse 2). No statistically significant correlations were noted between TN and TP, or between TP and EC.

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Section: Resultsmentioning

confidence: 99%

Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe

Mielcarek

Rodziewicz

Janczukowicz

et al. 2019

Water

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“…The absorption concentration of several elements was calculated based on the model described in Katsoulas et al (2015) [14].…”

Section: Calculationsmentioning

confidence: 99%

Implementation of the Circular Economy Concept in Greenhouse Hydroponics for Ultimate Use of Water and Nutrients

et al. 2020

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The circular economy in agriculture aims to reduce waste while also making best use of residues by using economically viable processes and procedures to increase their value. In this study a two-level cascade cultivation system was set up under greenhouse conditions. The research was focused on the identification of crop species as secondary crops and the development/iterative optimization of cultivation practices. For this purpose, different crop-combinations with a primary and different secondary crops were investigated using different system-layouts. Measurements were carried out during two cultivation periods. During the 1st Period a combination of cucumber (Cucumis sativus) as primary crop, with rosemary (Rosmarinus officinalis), basil (Ocimum basilicum), and peppermint (Mentha piperita) as secondary crops, was evaluated. In the 2nd Period the drainage of tomato (Solanum lycopersicum) plants was re-used to irrigate spearmint (Mentha spicata), dill (Anethum graveolens), celery (Apium graveolens) and parsley (Petroselinum crispum) plants. In both periods, different fertigation management strategies based on the drainage solution of the primary crop were employed. The use of the cascade hydroponic system improved both crop water and nutrient use efficiency. Notably, the NO3 disposal was about 40% less as compared to a monoculture. Average fresh water consumption of secondary crop plants irrigated with diluted drainage solution was reduced by 30% in comparison to plants irrigated with fresh water.

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“…Soilless cultivation in greenhouses is becoming increasingly popular in Mediterranean countries [1]. One of the major problems faced by horticulture in many regions of these countries is the low precipitation which restricts the available irrigation water [2].…”

Section: Introductionmentioning

confidence: 99%

Can Biostimulants Increase Resilience of Hydroponically-Grown Tomato to Combined Water and Nutrient Stress?

et al. 2021

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In the current experiment, tomato (Solanum lycopersicum cv. Nostymi F1) was cultivated in an open hydroponic system under optimal or stress conditions caused by reducing the supply of nutrient solution by 35–40% and treated with biostimulants to test whether their application can increase crop resilience to combined shortage of nutrients and water. The four different biostimulant treatments were: (i) no biostimulant application, (ii) treatment with the protein-based biostimulants COUPÉ REGENERACIÓN Plus and PROCUAJE RADICULAR provided by EDYPRO, (iii) treatment with a novel biostimulant based on strigolactones, provided by STRIGOLAB and (iv) treatment with MAXICROP, a commercial product consisting of seaweed extracts. Combined stress significantly reduced NO3−, P, and K in the root zone of tomato plants. However, the application of the strigolactone-based biostimulant to stressed plants maintained NO3− in the root zone to similar levels with non-stressed plants during the first and third months of cultivation. The biostimulants did not increase the vegetative plant biomass at 70 and 120 days after transplanting (DAT). The strigolactone-based biostimulant increased early leaf area development (70 DAT) and early fruit production compared to untreated plants but had no effect on total tomato yield (120 DAT). Maxicrop also increased early fruit yield, while Edypro decreased early and total yield compared to the control plants, an effect ascribed to overdosing, as the application rate was that suggested for soil-grown crops, while the plants were cultivated on an inert substrate. Strigolactone-based biostimulant and Maxicrop could be further studied by testing multiple applications during the cropping period.

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Extension and evaluation of a model for automatic drainage solution management in tomato crops grown in semi-closed hydroponic systems

Cited by 47 publications

References 28 publications

Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe

Analysis of Wastewater Generated in Greenhouse Soilless Tomato Cultivation in Central Europe

Implementation of the Circular Economy Concept in Greenhouse Hydroponics for Ultimate Use of Water and Nutrients

Can Biostimulants Increase Resilience of Hydroponically-Grown Tomato to Combined Water and Nutrient Stress?

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