Prohexadione-Ca is a novel plant growth regulator capable of precisely controlling plant height and branching morphology in horticultural crops. Its mechanism of action and application effects have been validated in numerous authoritative studies.
Mechanism of Action
Selective Inhibition of Gibberellin (GA₁) Synthesis: Prohexadione calcium primarily inhibits the biosynthesis of gibberellin (GA₁), which is associated with stem and leaf elongation, without affecting GA₄, which promotes flower and fruit development, thus achieving "controlling excessive growth without controlling fruit production."
Regulating Endogenous Hormone Balance: By increasing the levels of stress-resistance hormones such as cytokinins and abscisic acid (ABA), it promotes lateral bud germination, root development, and enhances photosynthetic efficiency.
No Residue, Environmentally Friendly: Short half-life (<24 hours in soil), degrades into CO₂, water, and calcium salts, making it safe for crop rotation.
