| abstract |
PURPOSE: To provide the method of inhibiting frost damage in the place where plants grow. n CONSTITUTION: A compound of formula (I) [R-O-PH(=O)O] n M (R is H, a 1-4C alkyl; M is H atom, alkali, alkaline earth or aluminum metal; n is an integer equal to the valency of M), for example, aluminum tris-(O-ethyl phosphonate) is applied to plants before frost season at 0.5-5kg/ha to protect plants (e.g. citrus) from frost damage. n COPYRIGHT: (C)1992,JPO |