Jasper County Democrat, Volume 4, Number 25, Rensselaer, Jasper County, 28 September 1901 — To Prevent Injury by Frost. [ARTICLE]

To Prevent Injury by Frost.

Injury of early fruit by frost is thought by M. Bellot des Mineres to be a result of rapid heating by the sun of the plants made sensitive by cold. He has tested his theory by building fires in vineyards at sunrise after frosty nights, and claims that in every case the slowly dissipated blanket of smpke so protected the vines from sudden change of temperature that they were not harmed by the cold. French viticulturists are planning to try fdso the firing of cannon horizontally over the ground on the approach of frost, a strip of vineyard 500 feet wide having been thua saved from damage when vines on both sides were badly injured.