LED light distance and split fertilization effects on growth and morphological characteristics of red lettuce in urban cultivation system
Laen...
Kuupäev
2025
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Light intensity and nutrients needed for plant growth are important factors in cultivation systems. Information regarding the distance of light sources and fertilization intervals for growing red lettuce in urban cultivation systems is still limited. This study evaluated the effects of LED light distance (35 cm and 50 cm) and split fertilizers (2nd and 3rd) on the growth and morphological of red lettuce in urban cultivation systems. The results showed a significant interaction between light distance and fertilization on morphological traits (leaf, stem, and root growth) and physiological parameters (chlorophyll a, b, and total chlorophyll). The distance of the light source had no significant effect on anthocyanin accumulation. A source light of 35 cm (SL-35) exhibited more dominant vegetative growth in the canopy, as indicated by a higher shoot weight ratio (SWR). The growth was predominantly concentrated in shoot tissues, with maximum leaf size achieved around 14 days after complete leaf expansion. Plants receiving split fertilization reached maximum leaf expansion slightly earlier, at around day 12. The leaf area was accurately estimated using a zero-intercept quadratic linear regression model based on leaf length and width (R² = 0.9851).
Kirjeldus
Received: July 14th, 2025 ; Accepted: November 12th, 2025 ; Published: November 28th, 2025 ; Correspondence: blakitan60@unsri.ac.id
Märksõnad
adaptation, growth modification, urban agriculture, vegetable diversity, articles
Viide
Ramadhani, F., Lakitan, B., Suwignyo, R. A., & Susilawati, S. (2025). LED light distance and split fertilization effects on growth and morphological characteristics of red lettuce in urban cultivation system. Estonian University of Life Sciences. https://doi.org/10.15159/AR.25.104