Effects of pruning and dose of paclobutrazol on the flowering, yield and fruits quality of mango (Mangifera indica L.)

抄録

Paclobutrazol boost up flower induction and improved fruit set and yield of Mango. This investigation aimed at assessing the effect of paclobutrazol, combined with tip pruning on the flower induction, yield and quality of mango. The experiment was conducted at Regional Horticulture Research Station (RHRS), Chapainawabganj during 2018-2019. Two level of pruning viz. P₁ = heavy pruning and P₀ = no pruning and four doses of Paclobutrazol viz. T₀ = control (0.0 g a i/m), T₁ = Paclobutrazol at 0.5 g a.i./m canopy, T₂ = Paclobutrazol at 1.0 g a.i./m canopy and T₃ = Paclobutrazol at 1.5 g a.i./m canopy were included in this experiment. Paclobutrazol had significant influence on the time of flowering, percentage of flowering, yield and fruit quality attributes of mango. Paclobutrazol treated tree at 1.0 and 1.5 g a.i/m canopy produced earlier flowering by 2 weeks over control tree. Simultaneously, paclobutrazol at all doses induced flowering in the heavy pruned tree, whereas heavy pruned tree without paclobutrazol application did not produce flowers. Significantly the highest percentage of flowering (93%) and yield both regarding number (66) and weight of fruits (16.06 kg) per tree were produced by higher dose of Paclobutrazol (1.5 g.a.i/m canopy) but it was statistically similar to that of Paclobutrazol at 1.0 g.i/m. Higher dose of paclobutrazol treatments decreased the individual fruit weight, fruit size, edible portion and higher grading fruits whereas heavy pruned tree combined with lower doses of paclobutrazol at 0.5 g a.i/m canopy increased them in somehow.