Dimitrios Savvas
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View article: Responses of Soilless-Cultivated Golden Thistle to the Total Salt and Nitrogen Concentrations in the Nutrient Solution
Responses of Soilless-Cultivated Golden Thistle to the Total Salt and Nitrogen Concentrations in the Nutrient Solution Open
Golden thistle (Scolymus hispanicus L.) is a wild edible green of high nutritional value, used in the traditional Mediterranean diet. Nowadays, there is an increasing demand from consumers for golden thistle and concomitantly an increasing…
View article: Sodium accumulation management in a closed-loop soilless cropping system using ion selective electrodes and a novel Decision Support System
Sodium accumulation management in a closed-loop soilless cropping system using ion selective electrodes and a novel Decision Support System Open
View article: Chloride as a Partial Nitrate Substitute in Hydroponics: Effects on Purslane Yield and Quality
Chloride as a Partial Nitrate Substitute in Hydroponics: Effects on Purslane Yield and Quality Open
This study examined the effects of both nitrogen (N) rate and form on the growth, nutrient uptake, and quality parameters of hydroponically grown purslane (Portulaca oleracea L.) during a spring cultivation cycle. Purslane was cultivated i…
View article: Physiological and Yield Responses of Pepper (Capsicum annuum L.) Genotypes to Drought Stress
Physiological and Yield Responses of Pepper (Capsicum annuum L.) Genotypes to Drought Stress Open
Drought stress is a critical abiotic constraint on agricultural productivity, particularly affecting crops like pepper (Capsicum annuum L.), which are highly susceptible to water deficits due to their physiological characteristics. The pre…
View article: Simulation Study to Assess the Efficiency of the Software NUTRISENSE to Optimise Nutrient Supply Using Ion Selective Electrodes in Closed-loop Soilless Cropping Systems
Simulation Study to Assess the Efficiency of the Software NUTRISENSE to Optimise Nutrient Supply Using Ion Selective Electrodes in Closed-loop Soilless Cropping Systems Open
A software used to control fertigation systems (FS) for automated preparation of nutrient solutions based on real time sensing of the drainage solution using ion selective electrodes (ISEs) was developed. This software, named NUTRISENSE, c…
View article: Developing and validating a modelling approach linked with ion selective electrodes to control pollution of water resources from greenhouse crops
Developing and validating a modelling approach linked with ion selective electrodes to control pollution of water resources from greenhouse crops Open
The recycling of drainage solution (DS) in greenhouses by applying closed-loop soilless cropping systems (CLS) eliminates pollution of aquifers by nitrogen and phosphorus emissions. However, the variable nutrient composition of the DS pose…
View article: Impact of Nitrogen Limitation, Irrigation Levels, and Nitrogen-Rich Biostimulant Application on Agronomical and Chemical Traits of Hydroponically Grown Cichorium spinosum L.
Impact of Nitrogen Limitation, Irrigation Levels, and Nitrogen-Rich Biostimulant Application on Agronomical and Chemical Traits of Hydroponically Grown Cichorium spinosum L. Open
This study investigates the effects of nitrogen fertilization, irrigation, and biostimulant application on the growth and nutrient composition of Cichorium spinosum L. The experimental design included two nitrogen rates (NR100 and NR30, 10…
View article: Optimizing vertical farm cultivation of Cichorium spinosum L.: White Light's influence and nutrition management
Optimizing vertical farm cultivation of Cichorium spinosum L.: White Light's influence and nutrition management Open
The objective of this study was to examine the integration of a wild leafy vegetable, Cichorium spinosum L., in vertical farms. This research comprises two experiments focusing on different "white" light products and nutrient soluti…
View article: Development and validation of an innovative algorithm for sodium accumulation management in closed-loop soilless culture systems
Development and validation of an innovative algorithm for sodium accumulation management in closed-loop soilless culture systems Open
In closed-loop soilless culture systems, the increase of the electrical conductivity (EC) caused by Na+ accumulation is a major bottleneck for recycling of the nutrient solution if water sources are used which contain Na+ at substantial co…
View article: Partial substitution of nitrate by chloride in fertigation recipes allows for lower nitrate input in hydroponic lettuce crops
Partial substitution of nitrate by chloride in fertigation recipes allows for lower nitrate input in hydroponic lettuce crops Open
The management of nitrogen (N) fertilization is of fundamental importance in hydroponics. To reduce the supply of nitrate (NO 3 - ) in fertigation recipes for Batavia lettuce crops grown in closed hydroponics, partial replacement of nitrat…
View article: Plant Biostimulants Enhance Tomato Resilience to Salinity Stress: Insights from Two Greek Landraces
Plant Biostimulants Enhance Tomato Resilience to Salinity Stress: Insights from Two Greek Landraces Open
Salinity, one of the major abiotic stresses in plants, significantly hampers germination, photosynthesis, biomass production, nutrient balance, and yield of staple crops. To mitigate the impact of such stress without compromising yield and…
View article: Innovative Cultivation Practices for Reducing Nitrate Content in Baby Leaf Lettuce Grown in a Vertical Farm
Innovative Cultivation Practices for Reducing Nitrate Content in Baby Leaf Lettuce Grown in a Vertical Farm Open
The aim of this research is to introduce innovative cultivation practices that result in reduced nitrate levels in baby leaf lettuce grown under vertical farming conditions while maintaining high productivity. For this reason, three experi…
View article: Precise fertilization in greenhouse crops using modern decision support systems to save fertilisers and mitigate pollution of water resources
Precise fertilization in greenhouse crops using modern decision support systems to save fertilisers and mitigate pollution of water resources Open
View article: Growth and Nutritional Responses of Zucchini Squash to a Novel Consortium of Six Bacillus sp. Strains Used as a Biostimulant
Growth and Nutritional Responses of Zucchini Squash to a Novel Consortium of Six Bacillus sp. Strains Used as a Biostimulant Open
The use of biostimulants consisting of plant growth-promoting rhizobacteria (PGPR) has been rapidly expanding in horticulture in recent years. In the current study, a novel mix of six Bacillus sp. strains (B. subtilis, B. pumilus, B. megat…
View article: Assessing Salinity Tolerance and Fruit Quality of Pepper Landraces
Assessing Salinity Tolerance and Fruit Quality of Pepper Landraces Open
Soil salinity caused by climate change is a major global issue, especially in regions like the Mediterranean basin. Most commercially cultivated horticultural species, including pepper, are considered to be salt sensitive. However, some un…
View article: Evaluation of the Role of Legumes in Crop Rotation Schemes of Organic or Conventionally Cultivated Cabbage
Evaluation of the Role of Legumes in Crop Rotation Schemes of Organic or Conventionally Cultivated Cabbage Open
Cabbage is an annual vegetable crop species cultivated throughout the year. The development of high-yielding cabbage hybrids and the optimization of several agronomic management practices such as fertilization and crop rotation have result…
View article: Multiple eco-efficiency solutions in tomatoes simulating biostimulant effects
Multiple eco-efficiency solutions in tomatoes simulating biostimulant effects Open
Global agricultural systems are increasingly moving towards organic farming to satisfy consumers’ increased environmental awareness. Yet, shortage of fertilizers and more frequent water stresses are challenging agricultural systems to mini…
View article: Exploring the Financial Viability of Greenhouse Tomato Growers under Climate Change-Induced Multiple Stress
Exploring the Financial Viability of Greenhouse Tomato Growers under Climate Change-Induced Multiple Stress Open
In this study, we implement a linear programming farm model to explore the impact of climate change-induced multiple stress on the financial viability of greenhouse tomato growers. The main results are that new technologies and innovations…
View article: First report of Pythium root rot of hydroponic lettuce (Lactuca sativa) in Greece, caused by Pythium Cluster B2a sp.
First report of Pythium root rot of hydroponic lettuce (Lactuca sativa) in Greece, caused by Pythium Cluster B2a sp. Open
Pythium root rot has been reported in several countries, but in Greece this disease was first detected in 2021, causing severe yield losses in a hydroponic lettuce crop. Isolations, morphological and molecular characterization, as well as …
View article: Effects of a Novel Biostimulant Consisting of Six <em>Bacillus</em> sp. Strains on Growth, Yield, and Nutrient Status of Zucchini Squash
Effects of a Novel Biostimulant Consisting of Six <em>Bacillus</em> sp. Strains on Growth, Yield, and Nutrient Status of Zucchini Squash Open
The use of biostimulants consisting of plant growth promoting rhizobacteria (PGPR) is rapidly expanding in horticulture in recent years. In the current study, a novel mix of six Bacillus sp. strains was tested as a PGPR biostimulant in two…
View article: State of the Art and New Technologies to Recycle the Fertigation Effluents in Closed Soilless Cropping Systems Aiming to Maximise Water and Nutrient Use Efficiency in Greenhouse Crops
State of the Art and New Technologies to Recycle the Fertigation Effluents in Closed Soilless Cropping Systems Aiming to Maximise Water and Nutrient Use Efficiency in Greenhouse Crops Open
Inappropriate fertilisation results in the pollution of groundwater with nitrates and phosphates, eutrophication in surface water, emission of greenhouse gasses, and unwanted N deposition in natural environments, thereby harming the whole …
View article: Can Long Photoperiods Be Utilized to Integrate Cichorium spinosum L. into Vertical Farms?
Can Long Photoperiods Be Utilized to Integrate Cichorium spinosum L. into Vertical Farms? Open
Vertical farming is gaining attention for urban agriculture and sustainable food production, but mainstream crops may not be economically viable in this system, prompting a shift to high-value crops. This study explores the potential of Ci…
View article: Comparing the Nutritional Needs of Two Solanaceae and One Cucurbitaceae Species Grown Hydroponically under the Same Cropping Conditions
Comparing the Nutritional Needs of Two Solanaceae and One Cucurbitaceae Species Grown Hydroponically under the Same Cropping Conditions Open
Switching over to closed-loop soilless culture systems, thus preventing pollution of water resources by nitrates and saving water and fertilizers, requires accurate estimations of the mean nutrient-to-water uptake ratios. To contribute to …
View article: Assessment of Growth, Yield, and Nutrient Uptake of Mediterranean Tomato Landraces in Response to Salinity Stress
Assessment of Growth, Yield, and Nutrient Uptake of Mediterranean Tomato Landraces in Response to Salinity Stress Open
Salinity is a major stress factor that compromises vegetable production in semi-arid climates such as the Mediterranean. The accumulation of salts in the soil can be attributed to limited water availability, which can be exacerbated by cha…
View article: VEG-ADAPT Practice Abstracts
VEG-ADAPT Practice Abstracts Open
The PRIMA project VEG-ADAPT issued 22 Practice Abstracts (PAs) following EIT Agri guidelines. The PAs are collected in Deliverable 6.5 of the project.
View article: Impact of salinity stress on fruit quality of different Mediterranean cherry-type tomato landraces
Impact of salinity stress on fruit quality of different Mediterranean cherry-type tomato landraces Open
Abiotic stresses, such as salinity, pose major risks on sustainability and productivity of most vegetable crops in the Mediterranean Basin. In soilless cultivation systems, mild salinity stress is introduced as a common practice to improve…
View article: Screening local landraces of melon for resilience to salinity stress under hydroponic greenhouse conditions
Screening local landraces of melon for resilience to salinity stress under hydroponic greenhouse conditions Open
Water shortage and heat driven evaporation in semi-arid climate, such as Mediterranean, that are mainly ascribed to climate change, introduced salinity as a major stress factor in vegetable crop production. Thus, the adaptation of vegetabl…
View article: Improvement and validation of a decision support system to maintain optimal nutrient levels in crops grown in closed-loop soilless systems
Improvement and validation of a decision support system to maintain optimal nutrient levels in crops grown in closed-loop soilless systems Open
To support growers in their transition towards recycling of water and fertilisers in soilless crops, an algorithm consisting of mass balance models was developed and applied via the decision support system NUTRISENSE. This algorithm is com…
View article: Combined Effect of Salt Stress and Nitrogen Level on the Primary Metabolism of Two Contrasting Hydroponically Grown Cichorium spinosum L. Ecotypes
Combined Effect of Salt Stress and Nitrogen Level on the Primary Metabolism of Two Contrasting Hydroponically Grown Cichorium spinosum L. Ecotypes Open
Stamnagathi (Cichorium spinosum L.) is an indigenous plant species well-known for its health-promoting properties. Salinity is a long-term issue with devastating consequences on land and farmers. Nitrogen (N) constitutes a crucial element …
View article: Effects of NaCl and CaCl2 as Eustress Factors on Growth, Yield, and Mineral Composition of Hydroponically Grown Valerianella locusta
Effects of NaCl and CaCl2 as Eustress Factors on Growth, Yield, and Mineral Composition of Hydroponically Grown Valerianella locusta Open
Corn salad (Valerianella locusta) is a popular winter salad, cultivated as an ingredient for ready-to-eat salads. The application of mild salinity stress (eustress) can increase the flavor and reduce the nitrate content of certain crops bu…