Date of Publication :8th August 2024

Abstract: Pulasan (Nephelium mutabile Blume), a fruit tree cultivated in the tropics, holds significant value in India, particularly in Kerala, where it is cherished as a homestead crop. This research categorizes its phenological growth phases into seven primary stages—bud development, leaf growth, shoot emergence, inflorescence appearance, flowering, fruit maturation, and ripening—utilizing the extended BBCH-scale. Additionally, the study delineates forty-one secondary growth stages. By analyzing these phenophases in relation to local environmental conditions, this research establishes a fundamental framework for standardizing agronomic practices of Nephelium mutabile Blume. This framework aims to facilitate broader cultivation of this exotic fruit crop, thereby promoting its agricultural significance and enhancing its economic potential in tropical regions.

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