Active ingredient and physiological mechanism
- Contains Paclobutrazol 23% Suspension Concentrate (SC), a triazole-derived plant growth retardant.
- Inhibits the enzyme ent-kaurene oxidase in the gibberellin synthesis pathway, restricting shoot elongation and vegetative flushes.
- Redirects plant photoassimilates toward floral bud differentiation, stimulating early and synchronized flowering.
Application method and seasonal timing in mango
- Apply via soil collar drenching around the tree trunk base within the active feeder root zone beneath the canopy dripline.
- Dig a circular shallow trench around the root zone, pour the diluted solution evenly, and irrigate lightly to aid absorption.
- Timing is critical: apply 60 to 90 days prior to the expected flowering season (typically July to September depending on regional geography).
- Dose depends strictly on tree age, trunk circumference, and canopy spread as prescribed on CIBRC registered product labels.
Best management practices and orchard care
- Only treat healthy, mature trees that have attained commercial bearing age (typically 7 years or older).
- Ensure adequate basal fertilization with farmyard manure, phosphorus, and potassium, alongside balanced micronutrient foliar sprays.
- Avoid overdosing or applying to drought-stressed orchards to prevent severe branch compaction or stunted new growth.
Official source
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ICAR - Central Institute for Subtropical Horticulture ↗Related on KisanPe
Common questions
What is the active chemical in Cultar?
Cultar contains Paclobutrazol 23% SC, a systemic plant growth regulator.
Why is Cultar applied in mango orchards?
It restricts excessive vegetative shoot growth and stimulates regular, early, and profuse flowering in alternate-bearing varieties.
How is Cultar applied to mango trees?
It is applied as a soil collar drench around the trunk within the drip line followed by light irrigation.
When is the ideal time to apply Cultar in mango?
Typically applied post-monsoon (July to September), around 2 to 3 months before normal floral bud initiation.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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