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All Journal Agriprima : Journal of Applied Agricultural Sciences
Alberth Fernando Sitorus
University of Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Equation to Predict Paddy Biomass Macronutrient Availability in Saline Soil Using Soil-Vegetation Indices from Multispectral UAV Aditya Putra; Qoid Luqmanul Hakim; Alberth Fernando Sitorus; Martiana Adelyanti; Istika Nita; Sudarto; Michelle Talisia Sugiarto; Novandi Rizky Prasetya
Agriprima : Journal of Applied Agricultural Sciences Vol 10 No 1 (2026): MARCH
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/agriprima.v10i1.784

Abstract

The average paddy production in Indonesia has decreased by -6,83% in the last five years (2015-2019), and salinity is the main factor causing the problem with an effect of 42% compared to climate change (21%) and drought (9%). Salinity will inhibit the availability of macronutrients in rice biomass, which must be detected quickly to avoid crop failure. This study aimed to obtain a formula equation to quickly estimate the macronutrient content in paddy biomass due to salinity. The formula equation was formed based on an algorithm resulting from the transformation of the SR, NGRDI, NDVI, TNDVI, and GNDVI index from the multispectral UAV and Nitrogen (N), Phosphorus (P), and Potassium (K) content in paddy biomass in saline soil. When the salinity source's distance gets closer, the macronutrient content decreases, and the transformation index value increases. The SR index is the most sensitive index to macronutrient content, indicated by the highest correlation value compared to other indices. Formula to predict macronutrient content was N: -0.04149 (SR) + 1.38314, P: -0.07243 (SR) + 0.61766, and K: -0.7059 (SR) + 5.3279. There was no difference between the estimation results and the macronutrient content from the laboratory analysis.
Co-Authors Aditya Putra Istika Nita Martiana Adelyanti Michelle Talisia Sugiarto Novandi Rizky Prasetya Qoid Luqmanul Hakim Sudarto