are Benches are heated to stimulate root growth.

Answer 1

1. Yes, benches are heated to stimulate root growth. This is a common practice in greenhouses to maintain optimal root zone temperatures, which can significantly improve plant growth and development. There are several methods used to heat benches, including:Conductive Under-Bench Heating Systems: These systems use hot water heating pipes installed under the benches to increase rooting media or pot temperatures. This approach has been shown to be more efficient than traditional perimeter heating systems, using 25% less energy while maintaining even canopy temperatures.
2. Heat Benches with Heated Cables: Some greenhouses use heat benches made by burying heated cables in damp sand and placing seedling trays on top. This method is effective for germinating seedlings and can be made to be energy-efficient by using thermostats to regulate the heat.
3. Root Zone Heating Systems: These systems involve placing a series of tubes under benches and heating them with hot water. The heat rises off the tubes, warming the soil and stimulating root growth