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Published byHector Nicholson Modified over 9 years ago
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Greenhouse Crops
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What Type of Plants Can One Grow in a Greenhouse? Trees? Shrubs? Bulbs Herbacious? Perenials? Annuals Grass? Food? Cut flowers?
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What are the Limiting Factors in a Greenhouse? Cost? Space? Seasons?
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Types of Greenhouses Free Standing
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Lean to
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Types of Greenhouses Cont… Quanset/Temporary/hoophouse
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Ridge and Furrow
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Greenhouse Videos https://www.ted.com/talks/britta_riley_a_g arden_in_my_apartmenthttps://www.ted.com/talks/britta_riley_a_g arden_in_my_apartment https://www.youtube.com/watch?v=3IryIOy PfTE
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Cold Frame
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Types of Covering Glass Polyethelene (plastic rolls) Fiberglass (not used much anymore) Polycarbonate –What we have –Double layer for good insulation
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Irrigation (watering) Overhead Ebb and flow Drip System Capillary mat
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Ebb and flood
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Overhead
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Ebb and Flow
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Drip Irrigation
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Capillary Mats
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Hydroponics (No Soil) Plants get all of their nutrients from the water.
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Growing Media (Soilless growing medium) Well drained Good Moisture holding capacity pH of 5.5-6.5 (slightly acidic) Good support Common ingredients include perlite, sand, vermiculite, bark, and peat moss.
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Fertilizers Organic Fertilizer: Natural derived from living things such as manure, blood and bone material. Inorganic: Synthetic nutrient compounds made by humans. These are most often used on greenhouse crops Application methods: Injection (through the irrigation lines, solids (top dressed or mixed with the soil.)
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Controlling Plant Growth Pinching: Pinching off the unwanted material to create desired growth.
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Hormones Can be done with hormones
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Heat Radiant: Like a radiator, could be in the concrete. Forced air: Similar to a garage heater. Fans can also circulate the air.
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Types of Plants Photoperiodic: Flower due to day length –Short day: Flower due to short day Poinsettia, mums –Long day: Flower due to long day carnation, henbane, oat, pea, barley, lettuce Thermoperiodic: Flower due to temperature Mums, poinsettias, easter lillies, bulbs, Christmas cactus
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Potted Flowering Crops Plants that are grown in a pot and flower. These plants are usually thrown out after the season or holiday is grown for. –Poinsettias –Mums –Easter lilies –Azaleas
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Azalea
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Easter Lily
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Poinsettia
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Crysanthemum
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Bulb Crops Bulb crops are bulbs that we force. –Forcing is when we make a plant grow and or flower at a unnatural time We put them in a cold temperature for a designated period of time and then put them in the warmth to flower.
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Stages of Growth Vegetative: Regular growth period Flowering: The plant makes it’s flower. Reproductive stage We can manipulate these stages using light and temperature.
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