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Keragaman Waktu Tanam Tanaman Padi di Pulau Kalimantan Runtunuwu, Eleonora; Syahbuddin, Haris; Ramadhani, Fadlullah
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 40, No 1 (2012): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Rice planting time varied among farming sites. This research was aimed to study the variation in planting time especially in rainy season in Kalimantan. ‘Planting time’ was deterimined using assumption as the time when 8% of paddy fields in a sub district had been planted. Analysis was done by using mean ten-days of planting area of each sub-district during the period of 2000 to 2009 that was obtained from Statistics Indonesia. The result showed that the farmers in Kalimantan started planting rice during the first and second ten-days of September each year. Peak time of rice planting varied among provinces, i.e., on October II/III (West Kalimantan), January I/II and June II/III (East Kalimantan), and March III/April I (South and Central Kalimantan). Data from this research could be used to calculate planting management at national level. Keywords: paddy crop, planting area, planting time, rain fall
Rainfall Zoning and Rainfall Prediction Model for Food Availability and Vulnerability at Center of Paddy Area Pramudia, Aris; Koesmaryono, Yonny; Las, Irsal; June, Tania; Astika, I Wayan; Runtunuwu, Eleonora
Forum Pasca Sarjana Vol 31, No 2 (2008): Forum Pascasarjana
Publisher : Forum Pasca Sarjana

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Abstract

The paper describes about rainfall zoning and rainfall prediction modeling and its use for rice availability and vulnerability analysis.  The study used rainfall data from Station Baros (Banten region), Station Karawang and Station Kasomalang Subang (Northern Coastal of West-Java), and Station Tarogong (Garut).  Fuzzy clustering methods, that was applied for rainfall zoning, used the representative data for El-Nino, La-Nina and normal means condition during 1980-2006 periods.  Neural network analysis technique was applied for rainfall prediction modeling.  Training set of the model based on the rainfall data of 1990-2002 periods, and validation model based on data of 2003-2006 periods.  The model were used to predict the rainfall of 2007-2008 periods.  The distibution of equivalence value between rainfall stations was very variative under El-Nino, La-Nina and Normal condition.  On the certain of equivalence level it could be derivated some different rainfall zone under El-Nino, La-Nina and normal condition.  Model training set could explain 88% of Baros rainfall variability, 89% of Karawang rainfall variability, and 72% of Kasomalang rainfall variability.  At Baros, Karawang and Subang, rainfall was predicted to be increased on November 2007-February 2008 period, and to be decreased on the March-June 2008, and to be increased on July-November 2008.  The rainfall decreasing on the March-June would carry a losses of rice production up to 25%.  But, applying the well irrigation management and suitable growing periods could decrease and mitigate the decreasing of paddy production.   Key words: rainfall prediction model, fuzzy clustering, neural network analysis, rice vulnerability
GLOBAL ANALYSIS OF THE RELATIONSHIP BETWEEN PRECIPITATION AND VEGETATION DYNAMICS DERIVED FROM NOAA/AVHRR-NDVI (ANALISIS GLOBAL DINAMIKA CURAH HUJAN DAN VEGETASI BERDASARKAN INDEKS VEGETASI NOAA/AVHRR) Runtunuwu, Eleonora; Syahbuddin, Haris
Jurnal Agromet Indonesia Vol 19, No 1 (2005): June 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

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Abstract

The study of changes in global precipitation patterns is a key element in the ongoing research of climate change. There are also changes that occur over the land surface, such as in vegetation, which are associated with changes in precipitation. However, a better understanding of precipitation- vegetation relationships on various time and space scales is needed.There were many studies on relationship between rainfall to NDVI such as in East Africa1), Bostwana2), Sahel3), Amazon and Northeastern Brazil4), China5), and also in global scale6)7). From those studies, the relation of precipitation and NDVI is complex, such as reported by Kerr8) that its relationship was linear in Senegal, while by Lu5) the relationship was quadratic in China. Additionally, Milich and Weiss3) found that the relationship was inconsistent from the year to the year in Sahel, Africa.Hence, this paper attempts to explore the relationship between climate variables and the vegetation dynamic derived from NOOA/AVHRR-NDVI value, based on either spatial scale or point data. The authors also tried to investigate the possibility to study the global environmental change by using satellite data.
Aplikasi Android pada Sistem Informasi Kalender Tanam Terpadu Ramadhani, Fadhlullah; Syahbuddin, Haris; Runtunuwu, Eleonora
INKOM Journal Vol 9, No 1 (2015)
Publisher : Pusat Penelitian Informatika - LIPI

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Abstract

Kemajuan teknologi informasi dewasa ini sangat pesat. Mulai dengan penggunaan telepon selular yang hanya digunakan untuk mengirimkan pesan singkat atau berkomunikasi biasa sampai dengan telepon pintar (smart phone).Badan Penelitian dan Pengembangan Pertanian dalam usaha penyebaran informasi pertanian, berusaha menggunakan teknologi informasi tersebut semaksimal mungkin. Salah satu contoh adalah penyebaran informasi kalender tanam terpadu, yang bukan hanya berbasis website saja, tetapi juga berbasis SMS dan Android. Makalah ini bertujuan ntuk memaparkan pengembangan aplikasi yang dapat digunakan untuk diseminasi informasi tanam terpadu menggunakan aplikasi mobile berbasis Android. Materi yang digunakan dalam penyusunan aplikasi ini tentunya terkait dengankalender tanam, yaitu standing crop yang diekstrak dari citra satelit MODIS, data hasil monitoring CCTV, estimasi waktu dan luas tanam, status tingkat kerawanan banjir dan kekeringan tingkat kabupaten, status organisme pengganggu tanaman, rekomendasi varietas dan prakiraan kebutuhan benih, rekomendasi dan kebutuhan pupuk, dan mekanisasi pertanian. Metode yang digunakan secara umum adalah pendekatan pengembangan sistem berbasis Android. Hasil akhir dari penelitian ini adalah tersedianya dan terpakainya aplikasi Android pada sistem informasi katam terpadu. Pada intinya pengguna dapat menggunakan smartphone untuk mendapatkan informasi terkini mengenai kalender tanam pertanian secara cepat. Cepatnya mendapatkan informasi pertanian diharapkan membantu petani dan masyarakat pertanian melakukan budidaya pertanian secara lebih akurat agar terhindar dari kegagalan.
ASSESSING GLOBAL CLIMATE VARIABILITY UNDER COLDEST AND WARMEST PERIODS AT DIFFERENT LATITUDINAL REGIONS Runtunuwu, Eleonora; Kondoh, Akihiko
Indonesian Journal of Agricultural Science Vol 9, No 1 (2008): April 2008
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Effect of climate change on water balance will play a key rolein the biosphere system. To study the global climate changeimpact on water balance during 95-year period (1901-1995),long-term grid climatic data including global mean monthlytemperature and precipitation at 0.5 x 0.5 degree resolutionwere analysed. The trend and variation of climate change, thetime series of monthly air temperature and precipitation datawere aggregated into annual arithmetic means for two extremeperiods (1901-1920 and 1990-1995). The potential evapotranspiration(Eo) was calculated using Thornthwaite method.The changes in mean annual value were obtained by subtractingthe maximum period data from 1990 to 1995 (Max) with theminimum period data from 1901 to 1920 (Min). The resultsrevealed that over 95-year period, mean global air temperatureincreased by 0.57oC. The temperature increase varied greatlyin Asia, with more than 3.0oC, especially at 45-70oN, as wellover the northern part of America (60-65oN) and Europe (55-75oN). In low latitude across Asia, Africa, and South America,the variation was less than 1.5oC. In 80-85ºN region, thevariation was relatively small and at higher latitudes it increasedsignificantly. Precipitation varied temporally and spatially. Inthe 40-45ºN and 40-45ºS regions, increasing precipitation ofmore than 100 mm occurred during the June-August andSeptember-November, especially in the northern hemisphere.The Eo increase of 2000 mm during 95 years occurred in thetropical northern America, middle Africa, and South-East Asia.A grid in Central Java of Indonesia showed that the Eo increaseof 2500 mm during 95 years resulted in the decrease of growingperiod by 100 days. In coping with climate change, adjustmentof cropping calendar is imperative.
DEVELOPMENT OF NATIONAL CLIMATE DATABASE SYSTEM FOR SUPPORTING AGRICULTURE RESEARCH RUNTUNUWU, ELEONORA
Jurnal Sumberdaya Lahan Vol 4, No 01 (2010): Juli 2010
Publisher : Indonesian Center for Agriculture Land Resource Development

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Abstract

One of the most significant challenges for improving the agroclimate research is availability of integrated climate data. This paper reviewed several climate database systems development of national and international levels; such as those produced by Indonesian Meteorological Climatological  and Geophysical Agency (BMKG), World Meteorological Organization (WMO), and New Zealand climatic database systems. Indonesian Agency for Agricultural Research and Development (IAARD) through Indonesian Agroclimate and Hydrology Research Institute (IAHRI) has  developed a national climate database system (CDS), called as IAHRI CDS, as a basic part of agroclimatic researches. The system was integrated the numeric climate data and thematic spatial maps by applying Geographic Information System (GIS) and programming technologies. The data mainly comes from automated and manual climate stations of Ministry of Agriculture, BMKG and Irrigation service of each province. The development of IAHRI CDS is expected as a great resource for many potential applications on agriculture research in Indonesia. Keywords : Aagriculture, climate, database system, Indonesia
Utilizing National Cropping Calendar Atlas in Copping with Variability and Climate Change RUNTUNUWU, ELEONORA; SYAHBUDDIN, H.
Jurnal Sumberdaya Lahan Vol 5, No 01 (2011): Juli 2011
Publisher : Indonesian Center for Agriculture Land Resource Development

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Abstract

Inappropriate cropping season and pattern resulted in the low production of seasonal food crops and the major cause of crop failure. A local wisdom called “Pranatamangsa” previously used to determine cropping time, now often miss due to climate anomaly. Crop growth is much affected by rainfall, solar radiation, and air temperature. The rainfall determines water availability and is essential requirement for crop growth. Planting time and cropping pattern until recently are adjusted to the climate variability and water availability to the crops. Therefore, the cropping calendar contained in this atlas is based on climate variability such as wet (El-Nino), normal, and dry (La-Nina) years. The atlas provides detailed description of planting time and crop rotation in each sub-district for each season in one year based on climate condition. The preparation of cropping calendar, both spatially and tabularly, provides information on cropping alternative for wet, normal or dry years. These alternatives were developed at 1:250 000 scale to be applied as reference in determining planting time and cropping pattern for each region and sub district. Hence, the risks of yield lost or crop failure can be avoided or minimized. Further, the policy and strategy of procurement and distribution of farm inputs particularly fertilizer and seed can be properly formulated. This cropping calendar was arranged through several steps: (1) climate data collection and farmer’s interview, (2) analysis of planting time and mapping, (3) field verification, and (4) refining the delineation of cropping pattern based on the sensitivity level. For a better planning of cropping time and pattern, this cropping calendar was arranged at the scale of 1:250.000 and attached with an information of cropping time and pattern at the sub-district level.
Agrometeorological Data and Rainfall Forecasting for Crop Simulation AMIEN, LE ISTIQLAL; RUNTUNUWU, ELEONORA
Jurnal Sumberdaya Lahan Vol 3, No 02 (2009): Desember 2009
Publisher : Indonesian Center for Agriculture Land Resource Development

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Abstract

Agricultural production is one of the most weather sensitive human activities that depend on daily atmospheric conditions. This review attempts to describe the meteorological data for crop requirements, some techniques of climate prediction and its use for crop simulations. Despite the rapid progress achieved in forecasting technology lately, further works are necessary for the real application. The amount and distribution of the rainfall in the coming season is necessary for planning crop cultivation particularly when climate anomaly arises. In agriculture the efforts to bridge the gap, climate forecasting results are the main input in crop simulation, especially for water and agro-climate management and cropping calendar.
Institutional Innovation of Integrated Cropping Calendar Information System to Support Climate Change Adaptation for National Food Security Runtunuwu, Eleonora; syahbuddin, haris; Ramadhani, Fadhlullah; Setyorini, Diah; Sari, Kharmila; Apriyana, Yayan; Susanti, Erni; Haryono, Haryono
Pengembangan Inovasi Pertanian Vol 6, No 1 (2013): Maret 2013
Publisher : +622518321746

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Abstract

Government of Indonesia has set the rice surplus target of 10 million tons in 2014. This program requires integrated and comprehensive efforts of all stakeholders in central and local levels. The policy was set forth in form of Permentan No. 45/2011 and then implemented by the Director General of Indonesian Agency for Agricultural Research and Development (IAARD) through a decree No. 178.1/Kpts/OT.160/I/7/2012 about For- mation of Integrated Cropping Calendar and Climate Change Task Force in each Assessment Institute for Agricultural Technology (AIAT) for whole Indonesia. Additionally, IAARD has developed an Integrated Cropping Calendar Information System as a reference for policy makers in planning food crop management. The information system contains the next planting season estimation at sub-district level, which includes the initial time of planting, disaster-prone areas (flood, drought, and pests/diseases), as well as technology recommendation (varieties, seed, and fertilizer). In order to make an operational standard for AIAT Task Force, the Technical Guideline of Integrated Cropping Calendar and Climate Change is imperative. This article contains the summary of the technical guideline for AIAT Task Force in support of Permentan No. 45/2011 and climate change adaptation for food security. An implication of implementation of the AIAT Task Force is an important part in improving the content of Integrated Cropping Calendar Information System that fits the needs of farmers and extension workers in the field in order to achieve the rice surplus target.    
EFFECT OF LAND USE ON SPATIAL AND SEASONAL VARIATION OF WATER QUALITY IN CILIWUNG RIVER, WEST JAVA-INDONESIA Runtunuwu, Eleonora; Kondoh, Akihiko; Subagyono, Kasdi
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 20, No 1 (2010)
Publisher : Indonesian Institute of Sciences

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Abstract

ABSTRACT Study on water quality aspects of Ciliwung river has been conducted from January 2008 to November 2009 to address the impact of land use change on its seasonal variation.  Nitrogen compound of NO2 and NH4 were monitored along the Ciliwung river with different time.  Land use change within the Ciliwung watershed was analyzed using remote sensing data and correlate with NO2, NO3, NH4 concentration, conductivity and pH along the river.   The results showed that in area with higher populated areas such as found in the middle and downstream area of Ciliwung watershed, NO3 concentration is higher.  This obvious variation was also observed for conductivity and pH.  It was also observed that the more dense area as in the middle and downstream area the change of land use was obvious.  The NO3 concentration is much influenced by land use and vegetation change prior to human activity.  In general, NO3 observed on October 2008 was higher compared with that observed on January, April and July 2008. In October where it is rainy season, flushing of NO3 is higher and it was transported into the Ciliwung river.  The temporal variation is seemed to be due to variation of rainfall generating different runoff and nutrient flushing surrounding river.