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2. Hydroponics - Wikipedia

   en.wikipedia.org/wiki/Hydroponics

   Hydroponic cultures lead to highest biomass and protein production compared to other growth substrates, of plants cultivated in the same environmental conditions and supplied with equal amounts of nutrients. [11] Hydroponics is not only used on earth, but has also proven itself in plant production experiments in earth orbit. [12]

3. Hoagland solution - Wikipedia

   en.wikipedia.org/wiki/Hoagland_solution

   The Hoagland solution is a hydroponic nutrient solution that was newly developed by Hoagland and Snyder in 1933, [1] modified by Hoagland and Arnon in 1938, [2] and revised by Arnon in 1950. [3] It is one of the most popular standard solution compositions for growing plants , in the scientific world at least, with more than 20,000 citations ...

4. Organic hydroponics - Wikipedia

   en.wikipedia.org/wiki/Organic_hydroponics

   Organic hydroponics is a hydroponics culture system based on organic agriculture concepts that does not use synthetic inputs such as fertilizers or pesticides. In organic hydroponics, nutrient solutions are derived from plant and animal material or naturally mined substances. [1] Most studies on the topic have focused on the use of organic ...

5. Kratky method - Wikipedia

   en.wikipedia.org/wiki/Kratky_method

   The Kratky method is a passive hydroponic technique for growing plants suspended above a reservoir of nutrient-rich water. [1] Because it is a non-circulating technique, no additional inputs of water or nutrients are needed after the original application, and no electricity, pumps, or water and oxygen circulation systems are required. [2]

6. Plant nutrition - Wikipedia

   en.wikipedia.org/wiki/Plant_nutrition

   Hypoxia can affect the nutrient uptake of a plant because, without oxygen present, respiration becomes inhibited within the root cells. The nutrient film technique is a hydroponic technique in which the roots are not fully submerged. Incomplete submergence allows for adequate aeration of the roots, while a "film" thin layer of nutrient-rich ...

7. Algal nutrient solution - Wikipedia

   en.wikipedia.org/wiki/Algal_nutrient_solution

   Nutrient solutions, as opposed to fertilizers, are designed specifically for use in aquatic environments and their composition is much more precise. [2] In a unified system, algal biomass can be collected by utilizing carbon dioxide emanating from power plants and wastewater discharged by both industrial and domestic sources.