ABSTRACT
Paclobutrazol is an N-containing heterocycle triazole which inhibits gibberellin biosynthesis and in turn retards vegetative growth. Paclobutrazol has demonstrated its usefulness by regulating traits of agronomic interest in various crops including cereal, vegetables, fruits and ornamentals. It has been effectively used for flower regulation in mango, peach, plum almond, apple, avocado and grapes. The efficacy of paclobutrazol in mango flower manipulation was first assessed in Baiganapalli and Deshehari. Canopy size is the most critical aspect of paclobutrazol application for yield sustainability. There is a significant increase in the root activity toward the trunk and close to soil surface and sparser root activity in the subsoil zone and in drip line area in paclobutrazol treated plants of mango. Paclobutrazol is characterized by moderate potential of mobility in soil and water environments which enables it is applied in soil unlike other growth regulators, however its mobility varied with the soil type.
