CHOOFA

A smudge pot (also known as a Choofa or Orchard heater) is an oil-burning device used to prevent frost on
Vineyards and fruit trees in colder regions. Smudge pots  prevents plants from condensation of moisture and raises air temperature very slightly.

Smudge Pots were developed after a disastrous freeze in Southern California in January 1913 wiped out a whole crop.

                                              And why are they called "CHOOFA"?


 In Australia they are called "choofers" because of the noise they make when lit — "choofa choofa choofa".