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TREATMENT CODES AND SPECIFICATIONS
Lime Paclobutrazol and Photoperiod Extension Study
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PBZ LEVELS
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P0 = 0 g a.i.plant (Control - water drench)
P1 = 2.5 g a.i.plant (Cultar® 25% SC, 10 mLplant, soil drench)
P2 = 5.0 g a.i.plant (Cultar® 25% SC, 20 mLplant, soil drench)
P3 = 7.5 g a.i.plant (Cultar® 25% SC, 30 mLplant, soil drench)
Application September 1 (both years), in circular trench around trunk base

LIGHT LEVELS
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L1 = Natural photoperiod (~10.5-11.5 h, October-February)
L2 = Natural photoperiod + 2h supplemental LED lighting
L3 = Natural photoperiod + 4h supplemental LED lighting
LED specs 50W, 5000K, 80-100 µmol m⁻² s⁻¹ PAR
Duration October 1 - February 28 (~150 days)

COMBINATIONS 4 PBZ × 3 Light = 12 treatments
Replicates 5 blocks, 60 total plants
Years 2 consecutive years (2024-25 and 2025-26)

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