Microtubing or spaghetti tubing is a very fine plastic tubing used in drip irrigation, typically in gardens and greenhouses, with a small inside diameter which may be 0.05" or smaller. It was introduced in 1950's into the United States, in Watertown, New York. By 1960's most greenhouse research and commercial operations used the drip pipe system with plastic mulch. Microtubing is one of the oldest products made for drip irrigation, having been manufactured for about fifty years. It has largely been replaced by other drip irrigation products such as emitters, microsprinklers, and drip tape.