Optimizing Paclobutrazol-based Growth Regulation: Effects of Butrabloom Super 40% on Major Crops

Abstract

Climate stress disrupts crop development by unbalancing vegetative and reproductive phases, reducing yield potential. This study evaluated paclobutrazol-based Butrabloom Super (Paclobutrazol 40% SC), a triazole derivative that inhibits gibberellin biosynthesis, on wheat, mustard and tomato grown in Kachchh during Rabi 2024. Using a Randomized Block Design with three replications, three BBS doses (30, 40, and 50 ml/150L) were applied once (50–55 DAS) and twice (30–35 and 65–70 DAS), compared to a recommended fertilization dose (RFD) as control. Results demonstrated BBS effectiveness across all crops. Wheat yield increased by 13.12% with 40 ml/acre applied twice, improving tiller formation and ear length. Mustard showed optimal seed yield at the same dosage and frequency. Tomato yielded best (18.1% increase) with 50 ml/acre applied twice due to increased fruit numbers. Lower doses (30-40 ml) proved more effective for cereals and oilseeds, while tomato responded better to higher concentrations (50 ml). These findings established BBS as an effective growth regulator for enhancing productivity in diverse crops, with benefits maximized through strategic timing and crop-specific dosage optimization.