COMPOSITION FOR FORMING ICE CRISTAL GERMS AS A PROTECTION AGAINST HAIL

摘要

The above composition provides ice crystal germs and thus leads to the freezing of droplets in super-cold clouds. It contains as the active ingredient the bacterial mass obtained from cultures of Pseudomonas syringae, Erwinia herbicola or Pseudomonas fluorescens or the mixtures or the cell membranes or super natant material of this cultures. The compositions prepared with liquid or solid carrier substances are injected by means of an aircraft or other method into the cloud layer where they result in the freezing of a large number of fine water particles even before a small number of large lumps of ice form in the absence of crystal germs.