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All Journal Journal of Tropical Crop Science Journal of Agrosociology and Sustainability
Defitrianida, Asyhuriyah Wardah
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Agriculture, Biological Sciences & Forestry Humanities Chemistry Computer Science & IT Earth & Planetary Sciences Energy Environmental Science Medicine & Pharmacology

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Morphophysiological Study of Kecapi (Sandoricum koetjape Merr.) Seedlings Against Different Artificial Light Spectra and Intensities Defitrianida, Asyhuriyah Wardah; Poerwanto, Roedhy; Hapsari, Dhika Prita; Matra, Deden Derajat
Journal of Tropical Crop Science Vol. 12 No. 03 (2025): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.12.03.604-614

Abstract

Kecapi (Sandoricum koetjape Merr.) is a tropical fruit species that belongs to the Meliaceae family. Kecapi trees require 5-7 years to produce fruit when grown from seeds, necessitating efforts to accelerate their growth, including through the modification of light. This research aimed to study kecapi’s morphological, physiological, and anatomical responses to light spectra and intensities from light-emitting diodes. The experiment was designed using a two-factor, completely randomized design (CRD), namely LED light spectrum (white and purple) and light intensity (2 and 4 lights). The result showed that morphological and vegetative growth were significantly affected under the high-intensity purple LED treatment. The low-intensity purple LED treatment increased stomatal conductance and chlorophyll-b synthesis. The transpiration rate was highest under the high intensity white LED treatment. Low-intensity white LED treatment only increased the abaxial stomatal aperture. As the intensity increased, it also increased N-Total content but decreased micronutrient levels in the leaves.
Effect of physical properties of germination substrate on marigold (Tagetes erecta L.) seedling growth Defitrianida, Asyhuriyah Wardah
Journal of Agrosociology and Sustainability Vol. 3 No. 2: (January) 2026
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jassu.v3i2.2026.2116

Abstract

Background: Marigold (Tagetes erecta L.) is a herbaceous plant widely cultivated for ornamental and ecological purposes. Its cultivation is strongly influenced by environmental factors, especially nutrient availability in the growing media. This study aimed to examine the effect of different seedling media compositions on their physical properties and the growth of marigold (Tagetes erecta L.) seedlings. Previous studies suggest that the physical properties of seedling media, such as porosity and water-holding capacity, play a crucial role in early plant development. Methods: The experiment was conducted using a Completely Randomized Block Design (RCBD) with one factor—media composition. The treatments included M0 (ready-to-use commercial media), M1 (husk charcoal [2]: cocopeat [1]: bamboo compost [1]), M2 (husk charcoal [1]: cocopeat [2]: bamboo compost [1]), and M3 (husk charcoal [1]: cocopeat [1]: bamboo compost [2]). Data collection included plant height, number of leaves, root length, number of roots, fresh weight, and dry weight. Data were analyzed statistically to determine the significance of treatment effects. Findings: The composition of the growing media significantly influenced marigold seedling growth. Media with a higher proportion of cocopeat (M2) resulted in greater porosity, which in turn supported better seedling development. This was evidenced by higher values in plant height, number of leaves, root length, root count, fresh biomass, and dry biomass compared to other treatments. Conclusion: The study concludes that the M2 media composition (husk charcoal [1]: cocopeat [2]: bamboo compost [1]) provides optimal physical conditions for marigold seedling growth. Novelty/Originality of this article: This research offers new insights into the effect of media physical properties on marigold seedling performance, particularly highlighting the beneficial role of increased cocopeat content in enhancing media porosity and seedling growth.
Co-Authors Dhika Prita Hapsari Matra, Deden Derajat Roedhy Poerwanto