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Cannaversity .: Glossary

Glossary


Terms in glossary: 321.

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THCV
tetrahydrocannabiverol.
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Tincture
Solution of alcohol or glycerine containing cannabis cannabinoids, another meaning may be for dye or pigment.
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Tipping
Method used to increase yield and maximize space, by trimming off the top bud. Traditionally, topping your plant causes two shoots to grow back in place of the one pruned off, thus increasing the number of top/main buds.
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TLC
thin-layer chromatography.
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Top Mulching
Surface dressing of soil with compost or other organic material to supply nutrients, add root space, and reduce water loss by evaporation.
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Trace
small area of vascular tissue connecting two like protions of the vascular system such as stem xylem and leaf xylem.
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Transplant Shock
When transplanting seedlings from one place to another, the roots are often disturbed and occasionally the change in climate can cause the plant to slow down or appear to stop growing. This is transplant shock. It is really redirecting it's energy to re-grow lost roots and to get accustomed to a change in temperature that it hadn't experienced before.
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Trellising
Method of shape and size alteration through physical restriction of growth (i.e.; tying plant down to a wire frame).
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Trichome
AKA crystals or sugar, they are tiny, mushroom-shaped capitulate glands full of THC that form on the flowering buds and bud leaves of cannabis.
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Triploid
Having three sets of chromosomes (3n) in contrast to the usual diploid (2n) condition.
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True-breeding
homozygous for the particular trait or traits.
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Vacuole
space within a cell separate from the cytoplasm.
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Vascular
Refers to the xylem and phloem tissues, which conduct water and nutrients through the plant body.
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Ventilation
Circulating air in order to provide the plant with fresh air and/or to reduce the temperature in the grow area. Air movement also encourages strong stems that can hold lots of flowers.
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Vermiculite
Is a sterile and light in weight (5 to 8 lbs/ft3). The pH of vermiculite will vary depending on where it is mined. Most U.S. sources are neutral to slightly alkaline, whereas vermiculite from Africa can be quite alkaline (pH = 9). Vermiculite is used extensively in the greenhouse industry as a component of mixes or in propagation. It is usually sold in four size grades: #1 is the coarsest and #4 the smallest. The finer grades are used extensively for seed germination or to top dress seed flats. Expanded vermiculite should not be pressed or compacted, especially when wet, as this will destroy the desirable physical properties.
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Watering Schedule
Term referring to how often and how much water a plant is given, usually measured in days and gallons. Ex: 1 gallon every 4 days.
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Watts
A measure of the amount of electricity flowing through a wire. Watt hours measure the amount of watts used in one hour. A kilowatt/hour (KWH) is 1000 watt/hours.
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Whorled Phyllotaxy
three or more limbs appear per node.
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Wild
weedy, escaped, naturalized, or indigenous.
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Worm Casting
(Vermiconversion) or using earthworms to convert waste into soil additives, is a biologically active mound containing thousands of bacteria, enzymes, and remnants of plant materials and animal manures that were not digested by the earthworm. The composting process continues after a worm casting has been deposited. In fact, the bacterial population of a cast is much greater than the bacterial population of either ingested soil, or the earthworm's gut. An important component of this dark mass is humus.
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Xylem
Water-conducting tissue.
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