Twain loved the paddlewheel steamboat and he loved the river. As a matter of fact, it was during his years on the river that he chose his pen name. Mark Twain was a frequent call of the leadsman. It meant that the water was 2 fathoms (12 feet) deep and indicated safe water. A leadline is used to determine water depth and the type of material which makes up the bottom or riverbed. A 30-foot-long line is attached to a pipe filled with lead, except for the bottom 2 inches.
1. Horticulture is a branch of plant agriculture and is both a science and an art. As an art, it incorporates the principles of design (as in landscaping). 2. Horticulture deals with intensively cultured and high-value crops.
Definition - What does Topping mean? In horticulture, topping is the act of mowing or cutting the aerial part of a crop to prevent seed formation and distribution. Most often, topping is performed in order to control a temporary cover crop and prevent it from seeding.