Material
Commercially available row cover is usually a lightweight synthetic, such as clear plastic (polyethylene) or spunbonded polyester. It is placed directly above rows of crops on a supporting framework—often, on wire hoops to form a low tunnel—and usually left in place for several weeks until crops are well-established.
Floating row cover is extremely lightweight row cover fabric that can be placed directly over plants, without need for a supporting framework, instead being simply anchored to the ground against wind.
Another form of light weight row cover is made from High Density Polyethylene (HDPE) and is a knitted fabric. It is strong and the manufacturer claims a life of 8 years. It is designed with a low shading effect (16%) and allows natural air flow and rain and water penetration. It also protects from light frosts, strong winds and hail. It is used on low tunnels. It comes in a variety of widths and lengths.
A protective tunnel formed with row cover is sometimes called a cloche. More often, a cloche, or bell jar, refers to a covering made of glass or plastic, placed over individual plants to provide similar protection as row cover.
Read more about this topic: Row Cover
Famous quotes containing the word material:
“Thought dissolves the material universe by carrying the mind up into a sphere where all is plastic.”
—Ralph Waldo Emerson (1803–1882)
“Like the dead-seeming, cold rocks, I have memories within that came out of the material that went to make me. Time and place have had their say.”
—Zora Neale Hurston (1891–1960)
“Our theism is the purification of the human mind. Man can paint, or make, or think nothing but man. He believes that the great material elements had their origin from his thought.”
—Ralph Waldo Emerson (1803–1882)