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greenhouse manageman
Unit 5 sexual reproduction
Question | Answer |
---|---|
used as a substitute for peat moss or in combination with peat; aged hardwood or pine is best | Bark |
a fungal disease that causes the stems to rot off at the soil line | Damping off |
the phase in the life cycle of a plant when growth is slowed or inactive | Dormancy |
the resumption of growth by a seed embryo; occurs when the embryonic root emerges from the seed coat | Germination |
small branched plants sold to growers | Liners |
a moss plant that grows on peat bogs, such as sphagnum or polytrichum | Peat moss |
a heat-treated lava rock that is lightweight with low nutrient and moisture holding capacity | Perlite |
small plants grown in a small amount of media in divided trays | Plugs |
the reproduction of plants | Propagation |
used to increase aeration and drainage | Sand |
breaking or softening a seed coat to allow absorption of moisture | Scarification |
reproduction using seeds | Sexual |
placing seeds in a moist soil medium at a temperature between 32 degrees and 50 degrees for a certain period of time | Stratification |
transferring or moving seedlings from the seedbed and setting them into the ground | Transplanting |
heat-treated mica that is lightweight and has high nutrient and moisture holding content | Vermiculite |