Horticulture Greenhouse Management Exploring Greenhouse Structures Interest Approach

Horticulture / Greenhouse Management Exploring Greenhouse Structures

Interest Approach After touring our greenhouse and based on any other greenhouses you may have been in, what did you notice (i. e. , light, warmth, humidity). Link your observations to the environmental needs of crops in a greenhouse.

What are the common greenhouse designs? 1. lean-to greenhouse shares a wall with a building and relies on the building structure to provide some support for the greenhouse roof.

What are the common greenhouse designs? 2. Even-span greenhouse – hoophouse.

What are the common greenhouse designs? 3. Uneven-span greenhouses

What are the common greenhouse designs? 4. Ridge-and-furrow greenhouse

What are the common greenhouse designs? 5. Retractableroof greenhouse

What are the common greenhouse designs? 6. Shadehouses

• The greenhouse framework supports the greenhouse covering material.

What to consider for frameworks? • • should be strong allow the maximum light to plants. require little maintenance. withstand heavy snow loads.

What to consider for frameworks? • Aluminum and aluminum/steel combination are long lasting and low maintenance. • Other materials: wood, galvanized steel, and angle iron.

Glazing? • The covering of the greenhouse is referred to as the glazing. • Consider: durability, light transmission, cost, and affects on heating costs.

What materials are used for greenhouse glazing? • Polyethylene – it is not durable – must be replaced every one to three years – least expensive

Glazing? • Structured sheets – polycarbonate, acrylic, and fiberglass materials, have grown in popularity. – Sheets made with double walls offer good insulation.

What materials are used for greenhouse glazing? 1. Polycarbonate structured sheets – good light transmission – resist hail damage – easy to work with. – stronger than glass, but it is lighter in weight. – good insulation – flame retardant.

Glazing? 2. Acrylic structured sheets – high light transmission – cost more than polycarbonate sheets – prone to hail damage – less flexible.

What materials are used for greenhouse glazing? 3. Fiberglass – dropped in popularity. – discolors after 7 to 10 years – poor insulation. – loses light transmission as it wears out – becomes extremely flammable with age.

What materials are used for greenhouse glazing? • Glass – the best for crop production. – highest light transmission. – less costly in the long run. – Tempered glass is stronger than regular glass. • May break during hailstorms • high initial cost.

What are the functions of the headhouse? • The headhouse might be used as a storage area, a potting area, an office, and/or a shipping area.

What are greenhouse bench options? • Bench = the structure that holds the plants above the ground. • Materials include: – expanded galvanized steel, aluminum, plastic, and rot-resistant wood. • Expanded galvanized steel provides good air circulation and allows water to drain from pots.

What are greenhouse bench options? • narrow enough for workers to reach for plants and to provide care. • arranged in the greenhouse with aisle space and growing space in mind.

What are greenhouse bench options?

What are greenhouse bench options?

What are greenhouse bench options? 1. Rolling benches or a type of movable bench maximize growing space by limiting space for aisles. • The benches are placed on pipes. • With little effort, the entire bench can be moved from side to side.

What are greenhouse bench options?