PLANT-GROWTH REGULATOR AND METHOD FOR REGULATING PLANT-GROWTH

摘要

PURPOSE: To provide a plant-growth regulator exhibiting a specific high plant- growth regulating effect, especially a synergistic effect on the acceleration of the coloration of apples, by adding dichloroprop and/or its salt to choline and/or its salt. ;CONSTITUTION: Choline and/or its salt (especially desirably choline chloride or choline phosphate) and dichloroprop, namely 2-(2,4-dichlorophenoxy) propionic acid and/or its salt, desirably 300-3000ppm, especially 50-1500ppm, of the choline salt and 30-5000ppm, especially 40-300ppm, of the dichloroprop are compounded in a mixing ratio (weight ratio) of 1:0.01 to 1:1, especially 1:0.03 to 1:0.5, to obtain the plant-growth regulator. When applied to fruits such as apples, pears, citrus fruits, the plant-growth regulator exhibits effects on the prevention of their preharvest dropping, calyx falling, etc., especially exhibits high effects on the coloration acceleration and mature data promotion of the apples without damaging the qualities of the apples.;COPYRIGHT: (C)1993,JPO&Japio