Term
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Definition
| causes membrane damage in sensitive species and could be above freezing |
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Term
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Definition
| when two thing have to adapt in a new environment in order to continue to coexist. |
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Term
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Definition
| the formation of ice that causes mechanical injury to the cooler point. |
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Term
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Definition
| when energy flows through a conducting medium from the warmer point to the cooler point. |
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Term
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Definition
| the circulation of warmed air or water, whose density has changed as a result of heat. |
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Term
| COOL SEASON/WARM SEASON CROPS |
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Definition
| temperature requirements during the growing season determine this. |
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Term
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Definition
| plants can be reverted back to non-flowering mode by exposure to high temperatures(germination can cannot be reversed). |
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Term
| FREEZING POINT DEPRESSION |
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Definition
| lowering the temperature at which freezing occurs by adding dissolved solvents. |
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Term
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Definition
| a thin layer of ice crystals deposited on the soil and plant surfaces as a result of freezing temperatures |
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Term
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Definition
| an area of cold air at the bottom of a hill (valley) because of temperature inversion. |
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Term
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Definition
| when weight of ice on braches causes them to break. |
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Term
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Definition
| temperature tolerance: the ability of a plant to withstand low winter temperature |
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Term
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Definition
| when the alternation of freezing and thawing is induced from uncommon seasonal changes, the ground and root systems "crack" |
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Term
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Definition
| a climate in the least amount of space. |
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Term
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Definition
| the suddenness of seasonal change or reversion. plants do not have time to harden-off. |
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Term
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Definition
| not a true dormancy. weather conditions that are spontaneous and abnormal to the season can affect the growth of plants during their dormancy. |
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Term
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Definition
| heat and or light reflected from a surface. a sheet of metal will reflect heat and light at the same time. |
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Term
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Definition
| mechanical factors to soften hard seed coat. |
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Term
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Definition
| maintaining water in a liquid or non-crystalline state below the freezing point. |
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Term
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Definition
| air temperatures increase with altitude |
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Term
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Definition
| temperature tolerance: the ability of a plant to withstand low winter temperatures. |
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Term
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Definition
| the alternating of cold and warm temperatures to induce flowering |
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Term
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Definition
| plants that remain in dormancy for a certain amount of time in the same chilly weather. they can't be fooled by short term unseasonable weather. |
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Term
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Definition
| a process that occurs after the seed germinates. the imposition of cold temperatures artificially to meet the minimum requirements. this produces a faster crop. |
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Term
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Definition
| germination while on the tree. |
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Term
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Definition
| tissue desiccation brought about by decreased water absorption by roots. |
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Term
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Definition
| the relative change of physical property when the temperature is changed by 1K. |
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Term
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Definition
| a measurement of the growth and development of plants and insects during the growing season. |
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Term
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Definition
| the process in which long wave radiation (infrared) emitted by the earth surface is absorbed by atmospheric gases only to cause further emission of infrared radiation back to the earth warming its surface. |
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Term
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Definition
| designed to let in rain and irrigation while holding the heat in |
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Term
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Definition
| a date of first capture of a target pest, with a sustained catch thereafter. |
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Term
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Definition
| a plastic or paper bag or small tent-like structure placed over the plants early in spring. |
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Term
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Definition
| extremely lightweight cover fabric that can be placed over plants without need for a supporting framework |
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Term
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Definition
| protective cover for plants; a small structure made of glass or clear plastic and placed over cold-sensitive garden plants ion cold weather. |
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Term
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Definition
| a bottomless boxlike structure, usually covered with glass or transparent plastic, and the bed of the earth that it covers, used to protect plants. |
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Term
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Definition
| heated glass-covered soil bed; a planting bed with glass and heated with electricity or by the action of fermenting manure to aid in germination of seeds. |
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Term
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Definition
| a chemical or hormonal differentiation resulting from the fulfillment of certain thermo-photoperiodic requirements. |
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Term
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Definition
| the morphological transformation of an induced growing point from a vegetative to a floral primordium. |
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Term
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Definition
| the process by which angiosperms produce a pattern of gene expression in meristems that leads to the appearance of an organ oriented towards sexual reproduction of a flower. |
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Term
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Definition
| the process of pretreating seeds to stimulate natural winter conditions that a seed must endure before germination. |
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Term
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Definition
| seed sensitivity to heat or cold |
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Term
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Definition
| the ability of plants to survive ice formation in extracellular tissues without significant damage to membranes. |
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