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Hydroponic Glossary Of Terms
Have you ever wondered what is involved in Hydroponic gardening? In order to understand how to use hydroponics for gardening you will need to understand the terminology of the various parts. You will notice that some of these terms are similar to regular gardening as well.
IAA - The most common naturally occurring auxin. Promotes growth in excised plant organs, induces adventitious roots, inhibits axillary bud growth, and regulates gravitropism.
IBA - A substance that is closely related in structure and function to a natural growth regulator found in plants. Indole-3-butyric acid is used on many crops and ornamentals to promote growth and development of roots, flowers and fruits, and to increase crop yields. Growers find it more effective and efficient than its natural counterpart because plants cannot break it down as quickly. No harm to humans or the environment is expected to result from use of indole-3-butyric acid.
Infection - The introduction or entry of a pathogenic microorganism into a susceptible host resulting in the presence of the microorganism within the body of the host whether or not this causes detectable pathologic effects.
Inflorescence - A floral axis that contains many individual flowers in a specific arrangement; also a flower cluster.
Inhibit - To hinder or to prevent.
Inoculate - To treat, usually seeds, with microorganisms to create a favorable response. Most often refers to the treatment of legume seeds with Rhizobium to stimulate dinitrogen fixation but also refers to the introduction of microbial cultures into sterile growth medium.
Insecticidal soap - An organic mixture that is effective in destroying soft-bodied
insects such as: aphids, mealy bugs, spider mites, thrips, soft brown scale, psyllids, rose or pear slugs, sawfly larvae, earwigs, lace bugs, whiteflies. It works by breaking down the coating that helps the adult or young insect retain moisture in its body. Once this coating is disrupted, the insect dehydrates and dies. Many commercial mixtures are readily available - a common brand name is "Safer".
Insects - a variety of insects attack plants. These include aphids, caterpillars, cutworms, fungus gnats, leaf miners, nematodes, spider mites, thrips, and whiteflies.
Internode - The region of a stem between two nodes, where there is no branching of the vascular tissue.
Interplanting - (See Companion planting)
Interveinal - In between the veins of the leaf, as in interveinal chlorosis.
Ion - An ion is an atom or group of atoms that carries a positive or negative electrical charge because of having lost or gained one or more electrons.
Iron - One of the seven micronutrients essential for plant growth. It is essential for chlorophyll synthesis, which is why an iron deficiency results in chlorosis.
Irrigation - The controlled application of water for cultural purposes through man-made systems to supply water requirements not satisfied by rainfall.
Juvenile - Young.
Kreb cycle - (See Dark reactions)
Ladybug - Small, round, bright-colored, and spotted beetle that usually feeds on aphids and other insect pests.
L-amino acids - (see amino acids)
Lamp - (See Bulb)
Leach - To remove soluble or other constituents from a medium by the action of a percolating liquid, as in leaching salts from the soil by the application of water.
Leaf miner - Any of various small moths or dipterous flies whose larvae burrow into and feed on leaf tissue, especially of the family Gracilariidae.
Leaf mold. See Cladosporium.
Light reaction - The first stage of photosynthesis during which energy from light is used for the production of ATP.
Limestone - A rock composed of more than 50% calcium carbonate [CaCO3]. Dolomite is a variant that is rich in magnesium.
Lipids - Oily substances that include, fats, oils and waxes.
Long day plants - Long-day plants are those that require a long period of exposure to light each day in order to produce flowers, this period is usually 14+ hours.
Lumens - Unit of measure for total light output. The amount of light falling on a surface of one square foot.
Lux - A measurement of light. 1 lux equals the illumination produce by 1 lumen falling on a surface measuring 1 square meter.
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