The Impact of El Niño and La Nina on Fluctuation of Rice Production in Banten Province

Rice production in Indonesia is facing serious problem, in which the production is fluctuated causing the unstability in the food supply. One factor influencing the rice productions is climate extreme. Here, we analysed rice production in Banten Province for 2002-2015. The objective of this reasearh was to analyse the effect of climate variability on the fluctuation of rice production in Banten. We relied on data from BPS Banten, which provided timeseries of rice production for 2002-2015. We used four statistical approaches namely linear, quadratic, exponential, and moving average models to detect trend in rice production. Our results showed that Rice Production fluctuated every year indicating an increased trend for the observartion period. Based on the trend analysis, the growth rate for rice production was 1,66% per year. Climate extreme has affected on rice production, with El Niño resulted in the decreasing on rice production, whereas La Nina caused an increased of rice production. Further, to adapt climate extreme events, the government needs to encourage farmers to join the Rice Farming Insurance (AUTP) program to protect rice farming from economic losses due to the climate extreme impacts

Deteksi Alih Fungsi Lahan Padi Sawah Menggunakan Sentinel-2 dan Google Earth Engine di Kota Serang, Provinsi Banten

Land is one of the main factors in rice production. However, the transfer of agricultural land functions to other sectors continues and becomes a challenge in the food supply in Indonesia. Serang City is one of the rice-producing areas in Banten Province. This study aims to analyze changes in the transfer of rice field functions to other sectors by mapping rice field cover using Sentinel-2 satellite imagery in 2021 compared to 2019 with the Random Forest method by using Google Earth Engine (GEE) applications and cloud computing support. The study results showed that the cover of rice fields in Serang City in 2021 decreased by 602.87 ha (-7.20%) compared to 2019 from the total land cover. Land cover in other vegetation was also reduced by 242 ha (-2.45%), while urban land cover in 2021 increased by 781.82 ha (10.89%). This study shows that there has been a change in land transfer in Serang City due to urban expansion in 3 years, as well as that the use of GEE can streamline monitoring of changes in land transfer and land use cover.   Keywords: rice field, Google Earth Engine, Sentinel-

インドネシアのバンテン州米生産地における機械脱穀展開の影響分析

平成27年度修士論文要

The Effect of Land use and Subsidized Fertilizer for Rice Production Case Study: Tangerang District, Banten

Tangerang District is one of the rice producers in Banten Province. The intensification of rice production is one of the solutions due to the agricultural land conversion problem in Tangerang. The purpose of this study is to analyze the farmer perception about subsidized fertilizer and we also analyze the effect of land use and subsidized fertilizer for rice production at the farmer level in Tangerang. The data used in this study were collected through an interview survey using a structured questioner to 35 respondents in Tangerang in 2016. The data were analyzed using descriptive and quantitative analysis. The result showed that the farmers perceive that the availability of subsidized fertilizer is frequently rare especially for nitrogen fertilizer and phosphorus fertilizer. The study also shows the rice production at the farmer level was affected by land use, the application of subsidized urea fertilizer, the application of organic fertilizer, and the application of returning the straw to the paddy field. All of these significant factors on rice production were inelastic in the short term and long term. It is important to decrease agricultural land conversion and returning the straw to the paddy field to maintaining rice production in Tangerang