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Cannaversity .: Glossary

Glossary


Terms in glossary: 321.

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Hormone
A biochemical product of a specific cell or tissue that causes a change or activity in a cell or tissue located elsewhere in an organism.
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Hormones
Plant hormones or growth substances are chemicals produced by the plants in very small quantities which control the growth and development of the plant five or more classes of hormones are recognized and they appear to interact in almost all phases of development.
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HPS
The best light available today for growing Marijuana. High Pressure Sodium lights are very bright and very efficient. This light has a red/orange spectrum that is ideal for the flowering phase. With enough of these kind of lights you too can grow those centerfold buds. HPS comes in a wide variety of wattages from 70 watts up to 1000 watts.
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Humus
a complicated material formed during the breakdown of organic matter. One of its components, humic acid, provides many binding sites for plant nutrients, such as calcium, iron, potassium, sulfur and phosphorus. These nutrients are stored in the humic acid molecule in a form readily available to plants, and are released when plants require them.
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Hybrid
Often refers to a plant or variety that has been developed by interbreeding two or more varieties, species, or genera.
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Hybridization
Process of mixing differing gene pools by crossing to produce offspring of combined parental characteristics.
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Hydroponics
A Method of growing of plants without soil, instead using a medium like coco fiber , clay pebbles, rockwool, perlite, vermiculite and other hydroponic mediums.
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Hypocotyl
Section of stem arising from the embryo below the cotyledons.
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Hypodermal Layer
middle layer of plant tissue.
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Incomplete Dominance
Neither gene of a pair is dominant.
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Indexing
Detecting of a virus carrier by grafting tissues or injecting vascular fluids into an uninfected clone.
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Indica
One of three main varieties of marijuana, the others being Sativa and Ruderalis. Indica is good to grow indoors due to tight internode spacing, resistance to fungus and pests, early maturation tendencies, short height, and dense flower production. Their stout stature and extremely wide leaflets make them easy to identify. An Indica generally produces a hard hitting, sedative stone, and will take around 45 to 60 days to finish flowering.
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Inductive Photoperiod
Daylength required to induce flowering.
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Inflorescence
group of flowers.
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Internode
The area of the stem between any two adjacent nodes.
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Interveinal Chlorosis
Yellowing between leaf veins but the veins themselves are still green. In grasses, this is called “striping.”
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Intrusive Growth
growth through a medium.
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Isodiametric
having equal diameters.
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Kif
Moroccan word for Hashish and Cannabis. In Morocco, kif is a weak mixture of chopped cannabis and tobacco.
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Lateral Shoot (branch)
An offshoot of the stem of a plant.
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Layerage
Development of roots on a stem (layer) while it is still attached to and supported nutritionally by the parent plant.
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Leaf
an outgrowth of a plant that grows from a node in the main stem. Most leaves are flat and contain chloroplasts; their main function is to convert energy from sunlight into chemical energy (food) through photosynthesis. Healthy leaves are lime green.
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Leafing
Removal of leaves.
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Leggy
If seedlings and plants do not get enough sunlight, they grow tall and thin stalks as they seek sunlight. These "leggy" plants have a difficult time supporting the weight of the plant and is easily damaged.
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Light-burn
When the heat from a light burns the plant.
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