Abstract
Oil palm is one of the plantation commodities that has an important role in the economy of Indonesia. The high demand for palm oil in the future must be supported by high productivity. Fertilization is one of the intensification methods to increase oil palm productivity. The main nutrient content in oil palm that helps the growth and development of oil palm is nitrogen. Soil samples and location coordinates were taken from oil palm plantations then adjusted to Sentinel-1 satellite images. The Sentinel-1 image obtained is then processed first to reduce the factors that aggravate the process afterward. The digital number value obtained from the reflection of the Sentinel-1 image was then used as an independent variable and the soil nitrogen results from the laboratory become the dependent variable. Data were trained and a model was built using Random Forest Regressor (RFR) and Multi Linear Regression (MLR). All models built were evaluated by the quality of the model using MAPE and the best model was determined by selecting the lowest MAPE. RFR model has 19.53% of MAPE and MLR has 22.41% of MAPE. The RFR is chosen to be the best model based on the lowest MAPE and based on interpretation, the RFR model has good accuracy for determining soil nitrogen nutrient content better than MLR model.
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Budiman, R., Seminar, K.B., Sudradjat (2021). Development of Soil Nitrogen Estimation System in Oil Palm Land with Sentinel-1 Image Analysis Approach. In: Boumerdassi, S., Ghogho, M., Renault, É. (eds) Smart and Sustainable Agriculture. SSA 2021. Communications in Computer and Information Science, vol 1470. Springer, Cham. https://doi.org/10.1007/978-3-030-88259-4_11
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