The Spectral trends of cabbage (Brassica oleracea L.) at different fertilization levels

  • Muhammad Ardiansyah Departemen Ilmu Tanah dan Sumberdaya Lahan IPB
  • Khursatul Munibah Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University, Jl. Meranti – Kampus IPB Dramaga, Bogor, Jawa Barat 16680
  • Salma Sabila Program Studi Manajemen Sumberdaya Lahan, Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian IPB University, Jl. Meranti – Kampus IPB Dramaga, Bogor, Jawa Barat 16680
  • Baba Barus Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University, Jl. Meranti – Kampus IPB Dramaga, Bogor, Jawa Barat 16680
  • Wahyu Iskandar Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University, Jl. Meranti – Kampus IPB Dramaga, Bogor, Jawa Barat 16680
Keywords: near infrared, red edge, spectroradiometer, visible light

Abstract

Cabbage is one of the important horticultural commodities that are widely preferred as fresh vegetables or other processed foods because it has a mild sweet taste. To meet the nutritional needs of cabbage plants during the growth process, fertilizer application is a common practice in the community. Identifying, characterizing, and monitoring mixed vegetable crops in fields using traditional methods is a challenge. Observations with multispectral, hyperspectral or proximal sensing optical satellite data such as spectroradiometers have been widely used for identification, characterization and monitoring of plants in agricultural land. However, research on identification, discrimination and quantitative mapping of cabbage spectral profiles in Indonesia using spectroradiometers is still limited. This study aims to identify the spectral response profile of cabbage plants planted in narrow land using the spectroradiometer and to analyze the spectral response of cabbage to different fertilization level treatments. The results showed that the spectral trend of cabbage plants at all growth phases had a trend similar to the spectral changes of green vegetation. Cabbage reflectance is low at visible light wavelengths and high at red edge and near infrared wavelengths. Fertilization treatment significantly affected the cabbage spectral at the 5% level. At the same growth phase with the higher dose of fertilizer, the higher the reflectance of visible light (blue, green and red), red edge and near infrared. Variation of stable reflectance values increased in visible light waves, red edge and near infrared is interpreted to indicate good growth status of cabbage. At the growth phase stage, with increasing age of plants regardless of fertilization level, the reflectance of cabbage in blue and red waves decreased slightly, on the contrary the reflectance of cabbage in red edge and near infrared increased until it reached its peak at 45 days after planting and decreased after 63 days after planting.

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Published
2024-10-01
How to Cite
ArdiansyahM., MunibahK., SabilaS., BarusB., & IskandarW. (2024). The Spectral trends of cabbage (Brassica oleracea L.) at different fertilization levels. Jurnal Ilmu Tanah Dan Lingkungan, 26(2), 77-84. https://doi.org/10.29244/jitl.26.2.77-84