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Showing 1 to 20 of 83 for “"hydroponic"”.
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Consumers’ Willingness to Pay for Hydroponic Lettuce
<p>With continued advances in hydroponic plant production technology, an increasing number of farms have begun using hydroponic techniques to grow leaf lettuce and other food crops in a controlled environment. Recent controversy about the ongoing inclusion of hydroponics in the USDA organic program …
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Water and Nutrient Reuse within Closed Hydroponic Systems
… balance within the nutrient solutions of closed hydroponic systems and how this maintenance may result in reductions in water and nutrient consumption. In this study, a nutrient solution management procedure was developed to maintain outputs while minimizing inputs. <em>Lactuca sativa</em> …
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Investigation of nutrient solutions for the hydroponic growth of plants
Hydroponics is used extensively in food production and plant research, allowing optimal control over the supply of elements to the plant. In hydroponics, nutrient can be delivered via a solution that is supplied to the growing plant or as a seed coat or treatment that is applied to the seed before …
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Investigation of pathogens removal from wastewater using a hydroponic system
… investigating the reduction of pathogens in the hydroponic system. A vertical flow constructed wetland planted with emergent macrophytes (Bidens pilosa L and Amaranthus hybridus L) was used to treat wastewater treatment from the secondary stage of the conventional sewage treatment process. …
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Ascorbic Acid and Tocopherol Concentration of Hydroponic and Soil-Grown Lettuces
… it may be an impossible feat. This is where the hydroponic method of crop cultivation can help provide the means to grow a garden. If people starving in third world countries could grow plants out of water, they could be nourished on much more than cassava root or rice. Hydroponically-grown …
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The Risk Of Pythium Aphanidermatum In Hydroponic Baby-Leaf Spinach Production
… as the main obstacle/risk in the production of hydroponically grown babyleaf spinach. This organism is so prevalent that even crops grown in fresh nutrient solution will often show signs of Pythium damage at harvest time. Previous studies have identified nutrient solution temperature as a key …
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Treatment of post hydrothermal liquefaction wastewater and suitability for hydroponic lettuce production
… of PHWW and investigating whether lettuce can be hydroponically growth with sufficient nutrients and safe for heavy metals and E.coli/coliforms. For different treatment combinations of PHWW dilution factor, filtration type, and nitrification reaction, the results indicate that concentrations of …
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Optimizing Hydroponic Lettuce Yield: Evaluation of Potassium Source and Concentration with Plant Imaging
… K concentration within the Virginia Tech base hydroponic lettuce fertilizer was increased,1x, 2x, and 3x the normal rates of K ppm, through the addition of potassium chloride (KCl) or potassium sulfate (K2SO4). To account for rising electrical conductivity (EC), due to the increase of K, KCl …
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Effect of bidens pilosa L in sulfate removal from industrial wastewater in a hydroponic system
… In order to remove sulfate from wastewater, two hydroponic systems were constructed, and the first one was cultivated with Bidens pilosa L and the other one was left unplanted (control section). Wastewater collected from Tendele Coal Mine was introduced into both sections and the initial sample …
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Hydroponic and Soilless Culture Systems and Transplant Practices Influence Production of Basil (Omicum basilicum L.)
… (Omicum basilicum L.) grown in three different hydroponic and soilless substrate systems and (2) seedling tray cell-count and transplant date into hydroponic culture effects on basil growth and yield at harvest. For the first experiment, four basil cultivars (‘Genovese’, ‘Mrs. Burns Lemon’, …
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Hydroponic container farms : validation of a building energy model and its integration in urban design
… CEA system, container farms, consist of vertical hydroponic farms inside retrofitted shipping containers. The artificially controlled interior environments within container farms along with their portability and modularity allow container farms to grow food in a variety of otherwise unused …
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The appropriated carrying capacity of tomato production : comparing the ecological footprints of hydroponic greenhouse and mechanized field operations
… led to higher per hectare yields. In particular, hydroponic greenhouse agriculture is advanced as a new and particularly productive approach to high output farming. This may contribute to the belief that agricultural land can be urbanized because human ingenuity is seemingly developing substitutes …
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Measuring the Physiological Effects of Methylobacterium oryzae Foliar Inoculation onto Salt-Stressed Tomatoes grown in a Greenhouse Semi-Hydroponic System
<p>Salinity stress has been shown to improve hydroponic produce quality such as that of tomato but at the trade-off of produce yield. In order to improve demand for hydroponic produce, techniques that improve salinity tolerance could offset declines in yield without altering the improved quality of …
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Impact of growth stage, supplemental red LED, and salinity stress on the quality and aroma attributes of hydroponic fennel (Foeniculum vulgare Mill.)
… cultivated with nutrient film technique (NFT) hydroponic systems under controlled conditions. Solid phase microextraction (SPME) - gas chromatography - mass spectrometry olfactometry (GC-MS-O) was utilized for aroma characterization. RNA sequencing was used to generate transcriptome profiles of …
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Temporal patterns of metal ion and nanoparticle uptake by Lolium perenne in hydroponic systems in the presence of amendments ethylene diamine disuccinic acid (EDDS) and gibberellic acid
… free ions (Cu, Zn) alone and in combination in a hydroponic solution; 2) Explaining the behaviour and translocation trends of hydroponically grown perennial ryegrass (Lolium perenne) plants when metals were supplied as copper oxide (CuO) and zinc oxide (ZnO) nanoparticles and Cu and Zn ions with …
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Using Tall Fescue to Remove Nutrients from Renovated Turkey Processing Wastewater
… treatment efficiencies of a greenhouse-based hydroponic system. The wastewater, from a turkey processing plant, was treated in a sand bioreactor system. Reduction of nitrate and phosphorus from wastewater was quantified in the influent and effluent to evaluate the performance of the …
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The effect of homoeopathic Ozonum in various potencies on growth and yield of the Lollo Bionda Lobi cultivar of leafy lettuce (lactuca sativa) cultivated in a closed hydroponic system
Mini-dissertation submitted in partial compliance with the requirements of the Master’s Degree in Technology: Homoeopathy, Durban University of Technology, Durban, South Africa, 2012.
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Root growth of wheat genotypes in hydroponics and soil in relation to water stress tolerance and grain yield
… genotypes differ in root size, if root growth in hydroponic culture predicts root growth in soil, and whether root size is associated with grain yield and with tolerance to soil moisture stress. Differences in root fresh weight (RFW), shoot fresh weight (SFW), number of roots longer than 40 cm, …
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Mechanisms of cadmium tolerance in Populus
… In Chapter 2, I conducted a greenhouse hydroponic study in which 252 genotypes of a pseudobackcross Populus progeny of family 52-124 were grown and treated with Cd. The phenotypic data recorded on these genotypes were used to identify tolerant and susceptible genotypes, and also for …
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