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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Jurnal Hortikultura Indonesia (JHI) Agromet Forum Pasca Sarjana Indonesian Journal of Geography Jurnal Kependidikan: Penelitian Inovasi Pembelajaran Jurnal Agrista AGRIVITA, Journal of Agricultural Science Journal of Mathematical and Fundamental Sciences Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Aplikasi Bisnis dan Manajemen (JABM) E-Journal EnviroScienteae JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Journal of Tropical Crop Science International Journal of Remote Sensing and Earth Sciences (IJReSES) Jurnal Entomologi Indonesia JURNAL METEOROLOGI DAN GEOFISIKA JURNAL PANGAN Jurnal Ilmiah Inovasi Planta Simbiosa : Jurnal Tanaman Pangan dan Hortikultura International Journal of Disaster Management Jurnal Meteorologi dan Geofisika The International Journal of Remote Sensing and Earth Sciences (IJReSES)

Yonny Koesmaryono

Agrometeorology Division, Department Of Geophysics And Meteorology, Faculty Of Mathematics And Natural Sciences, IPB University, Campus IPB Dramaga, Indonesia

Author-ID : 2445581

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Mathematics Physics Social Sciences Other

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WATER DEFICIT EFFECT ON GROWTH OF YOUNG FAST GROWING TEAK (Tectona Grandis L.F.) (PENGARUH DEFISIT AIR TERHADAP PERTUMBUHAN JATI EMAS MUDA) E. Eliyani; I Handoko; Yonny Koesmaryono
Agromet Vol. 19 No. 1 (2005): June 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Teak (Tectona grandis L.f.) has been grown in Indonesia since the beginning of 14th century. Teak forests in Indonesia are found mainly on the island of Java, which cover an area of about 1 million ha (Indonesia Forest State Enterprise, 1992). Outside Java, the natural area of teak is Muna Island, Southeast Sulawesi (Simon, 1997). In some recent years, teak has been planted in some other islands of Indonesia from Sumatra to Papua mainly by private sectors and farmers. Some of these plantations are in areas that would have been considered marginal for teak growing two decades ago.This phenomenon was encouraged by relatively new perception of teak planting as a commercially profitable venture, as well as by policy and legal changes. The rotation cycle of new high-intensity teak plantations is generally between 20 and 25 years which is three to four times shorter than for older low-intensity plantations (Nair & Souvannavong, 2000). Nowadays, the government does not control its harvesting and utilization for teak grown on private land.However, information on growth response of this kind of teak to climate is very limited. The fast growth of this kind of teak needs a specific environment that could be different for the slow growing one. Its resistance to water deficit may not be as high as the slow growing one as its needs much water to cover its fast growth particularly in the early period of growth. This experiment was intended to analyze the effects of water deficit to the growth of young fast growing teak.

EFISIENSI KONVERSI ENERGI SURYA PADA TANAMAN KENTANG (Solanum tuberosum L.) (RADIATION USE EFFICIENCY IN POTATO (Solanum Tuberosum L.) Agus Suryanto; Bambang Guritno; Yogi Sugito; Yonny Koesmaryono
Agromet Vol. 19 No. 1 (2005): June 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Efisiensi penggunaan radiasi surya adalah nilai konversi radiasi surya menjadi energi kimia melalui proses fotosintesis. Nilai ini menunjukkan persentase berapa banyak energi radiasi yang diserap tanaman mampu diubah menjadi energi dalam bentuk kimia (Lawlor, 1993). Produksi berat kering berbagai tanaman rata-rata sekitar 1,4 g berat kering per MJ radiasi surya yang diserap tanaman atau dengan kata lain mempunyai nilai Efisiensi Konversi Energi (EKE 2,5) %. Pada tanaman kentang, dengan intensitas 2 GJ m-2 selama masa pertumbuhan 120 hari umumnya diperoleh nilai EKE 1,3 % (Jones, 1992)Sampai dengan tahun 2000 perkembangan luas panen tanaman kentang di Indonesia mencapai 73.068 ha, dengan total produksi 977.349 ton, atau produksi rata-rata per hektar berkisar 13,4 ton (BPS, 2000). Di Jawa Timur, Basuki et al. (1993) melaporkan, produktifitas 10 varietas kentang pada nilai ILD 1,26 – 3,93, berkisar 11 - 27 ton per hektar. Produksi ini apabila ditinjau dari sisi penangkapan energi surya, efisiensinya sangat rendah, karena menurut Haeder dan Beringer (1983), pada kisaran ILD tersebut semestinya dapat dihasilkan umbi kentang sekitar 20 – 50 ton per hektar. Kecenderungan hasil yang rendah ini disebabkan praktek budidaya tanaman yang kurang benar sehingga memberikan nilai konversi energi surya yang sangat tidak efisien, misalnya penggunaan jarak tanam yang terlalu lebar, penanaman tanaman pada saat musim hujan dimana banyak awan yang menghalangi radiasi surya, penanaman tanaman pada dataran tinggi yang cenderung berkabut, saat tanam tanpa memperhatikan fase pertumbuhan yang peka terhadap intensitas radiasi surya, dan lainnya. Untuk meningkatkan efisiensi penggunaan radiasi surya, berbagai cara dapat dilakukan. Sugito (1999) menyarankan beberapa cara perbaikan budidaya tanaman, diantaranya dengan mengurangi energi surya yang lolos pada pertanaman dan mengoptimalkan penggunaan energi surya yang jatuh pada kanopi tanaman, diantaranya dengan meningkatkan populasi tanaman. Haeder dan Beringer (1983) menambahkan peningkatan EKE dapat juga dilakukan dengan memilih kultivar yang berumur panjang dan pemilihan lokasi bersuhu 10 – 20 C dengan intensitas cahaya tinggi. Percobaan ini bertujuan untuk menganalisis peningkatkan efisiensi energi surya melalui pengaturan saat tanam, populasi tanaman serta penggunaan varietas yang potensial.

PENDUGAAN DEFISIT AIR TANAMAN JARAK (RICINUS COMMUNIS L) BERDASARKAN MODEL SIMULASI DINAMIKA AIR TANAH(PREDICTION WATER DEFICIT OF CASTOR OIL (RICINUS COMMUNIS L) WITH DYNAMIC SOIL-WATER MODEL SIMULATION) F. Djufri; A. Yanto; . Handoko; Yonny Koesmaryono
Agromet Vol. 19 No. 2 (2005): December 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Construction dynamic model soil – water that describes relationships between crop growth and development and environmental factors (weather and soil) can be further developed to be employed as a decision support tool . The objectives of the research : (1) to know interaction of factor weather , soil, castor oil crop, (2) construction dynamic model soil – water , (3) monitoring water deficit factor at level of water irrigation. The research consisted field observation and construction model. The experimental results were used to determine quantitative relationships to obtain model parameters, calibration, and validation. This research was conducted in field experimental station of Balitpa Sukamandi, and it was arranged in split plot design with three replications. Two variety of castor oil as main plot design were : (1) ASB 81, (2) ASB 60. Three levels of water irrigation as sub plot design were : (1) No water irrigation, (2) ½ ETp, (3) 1 ETp. Field measurements included weather variables, soil, and crop. The t-test does not indicate significant difference between observed and predicted soil water content. The model is valid and reasonably well for predicting soil water content as long as castor growth . The dynamic model soil-water can be employed as a decision support tool in the management of castor oil plantations in Indonesia.

EFISIENSI PENGGUNAAN RADIASI SURYA DAN SEBAGAI DASAR DALAM MODEL JARAK PAGAR(RADIATION USE EFFICIENCY AS BASIS THE CROPS MODELING OF JATROPHA) Gusti Rusmayadi; . Handoko; Yonny Koesmaryono; Didiek Hadjar Goenadi
Agromet Vol. 22 No. 2 (2008): December 2008
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Plant growth interpretation in term of accumulated intercepted solar radiation and the radiation use efficiency (RUE) was used to study the growth and analysis of Jatropha (Jatropha curcas L.). A number of crop growth simulation models have been developed using the RUE concept to predict crop growth and yield in various environments. These models generally calculate daily biomass production as the product of the quantity of radiation intercepted and RUE. This research was carried out to quantify the RUE, biomass and leaf area index on Jatropha under rainfall condition, four levels of nitrogen fertilizer (N) and three population densities (P) planted twice. The experiments used a systematic Nelder fan design with 9 spokes and 4 – 5 rings were conducted at SEAMEO-BIOTROP field experiment in 2007. Data from the first experiment were used for parameterization and calibration and the second experiment data for model validation. Values of RUE were determined by nitrogen fertilizer and plant density. Based on parameterization, we found that RUE for prediction above ground biomass accumulation of Jatropha were 0.94 (r=0.83) g MJ-1 to 1.3 (r=0.75) g MJ-1. Validation between model prediction and field experimental data showed that model can simulate crop growth and development of Jatropha.

ANALISIS HUBUNGAN TINGKAT SERANGAN HAMA BELALANG KEMBARA (LOCUSTA MIGRATORIA MANILENSIS MEYEN) DENGAN CURAH HUJAN(ANALYSIS ON INFESTATION OF LOCUSTA MIGRATORIA MANILENSIS MEYEN BASED ON RAINFALL DATA) Yonny Koesmaryono; Hana F.T.; Yusmin .
Agromet Vol. 19 No. 2 (2005): December 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Rainfall has an important role in the incidence of insect pests infestation, such as of locust grasshopper (Locusta migratoria manilensis Meyen). There are some provinces experience of locust grasshopper infestation, i.e. South Sumatera, Lampung, West and East Nusa Tenggara, North and South Sulawesi, West and Central Kalimantan. Generally, cropping season period of April–September and October-March shows a difference influence on the infestation of locust grasshopper. Most of districts in the provinces indicated that locust infestation increases in October–March cropping season, except in South Sulawesi it increases in April–September period. The analysis of correlation between rainfall and locust infestation applied in various timelags. The timelag was determined correspond with the life stage of locust, i.e. egg–hatching–nymphal–early imago–mating–active imago stage. The life stage of locust most influenced by rainfall and correspond with feed availability were active imago stage (in 9 districts) and egg stage (in 6 districts). The increase of rainfall during egg stage tend to suppress the infestation of locust, while during active imago stage the influence of rainfall tend to increase the infestation. The influence of rainfall closely correlated to locust infestation occurs in OKU, Central and South Lampung, West and East Sumba and West Ketawang.

INDEKS KECUKUPAN AIR UNTUK PENETAPAN WAKTU BERA KEDELAI DI JAWA TENGAH(WATER SUFFICIENCY INDICES TO DETERMINE FALLOW PERIODS OF SOYBEAN IN CENTRAL JAVA) Setiapermas M.N.; Yonny Koesmaryono; Yusmin .; Irianto G.
Agromet Vol. 19 No. 2 (2005): December 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Climate anomaly has impact on yield and productivity of soybean. An alternative to minimize its impact, it is important to determine period of fallow for soybean in dry land. Period of fallow was determined by using agroclimate analysis such as water satisfaction index (WSI). WSI required daily climate data, soil and agronomy parameter to calculte ETR/ETM fluctuation . Agroecology and soybean yield data were collected from October 2003 to February 2004 in Pondok Village, Ngadirejo Sub-District, Wonogiri District and in Pojok Village, Nogosari Sub-District, Boyolali District . Fallow period was analyzed using CWB-ETo, a daily water balance software developed by IAHRI based on FAO method. WSI was calculated for El-Nino and La-Nina years to determine planting period. The result showed that fallow period were different between locations due to soil and climate variability. The longest fallow period is Blora District from Januri III to October II. While the shortest fallow period are Semarang and Magelang.

PERTUMBUHAN DAN PRODUKSI PAPRIKA PADA BERBAGAI INTENSITAS RADIASI SURYA DI DATARAN RENDAH, BATAM(GROWTH AND PRODUCTION OF SWEET PEPPER CULTIVATED UNDER DIFFERENT SOLAR RADIATION INTENSITY AT LOWLAND REGION OF BATAM) Z. Noor; B.F. Simatupang; Yonny Koesmaryono
Agromet Vol. 19 No. 2 (2005): December 2005
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

An experiment has been conducted in Batam Island to study the response of sweet pepper which cultivated at lowland of 20 m asl, during November 2001 to May 2002. Five varieties have been used namely, Bangkok, Gold Flame, New Zealand, Spartacus and Tropica. Plants cultivated using hydroponic system under plastic house with ultra violet protection. The radiation of 100% (control) and it reduce of 25% and 50% used as treatment in order to determine the microclimate favourable for growing pepper in lowland. The results shown that reducing radiation intensity has influenced significantly on vegetatif growth, except leaf area index. The plants were grown under 100% and 25% radiation intensity performed taller with more branches compare to the plants under 50%. Variety of Spartacus has grew tallest than others. Stem diameter of control plants performed bigger than other plants, while reducing radiation intensity has no effect significantly to leaf area index. Experiment also revealed that reducing radiation intensity has significant effect on number and weight of peppers per plant, and thickness of flesh, compare to control. In general, Gold flame has produced best quality than others varieties although it has less number of fruits compare to Tropica.

THE DAILY RAINFALL STATISTICAL SHIFT DURING THE HALF CENTURY OVER THE BRANTAS CATCHMENT, EAST JAVA(STATISTIK PERUBAHAN CURAH HUJAN HARIAN SELAMA SETENGAH ABAD DI DAERAH TANGKAPAN BRANTAS, JAWA TIMUR) E. Aldrian; F Ismaini; Yonny Koesmaryono
Agromet Vol. 21 No. 1 (2007): June 2007
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

A study of long term shift of the daily rainfall over the Brantas catchment East Java was done. Such a study is relatively new for the country due to lack of good quality data and sparsely distributed data all over the region. With a good quality long-term daily rainfall data over the Brantas catchment, we could detect a statistical shift of amount of rainy days, shift between periods and frequency trend changes from weekly, monthly, three-monthly and annually. The study utilized several methods including the probability density function distribution shift, Mann Kendall non parametric trend test and the wavelet analyses. The shift of low amount rainfall occurs from the dry to the wet season. We found distinct influences of orography and ENSO years in our trend tests. Additionally, the result of the Mann Kendall test show that the trend of rainy days increase during the wet season and the second transition period, while decrease during the dry season and first transitional period. Meanwhile the El Nino and La Nina have significant influence toward the dry season and the second transitional period.

PEMODELAN TANAMAN JARAK PAGAR (JATROPHA CURCAS L.) BERBASIS EFISIENSI PENGGUNAAN RADIASI SURYA,KETERSEDIAAN AIR DAN NITROGEN(CROP MODELING OF JARAK PAGAR (JATROPHA CURCAS L.) BASED ON RADIATION USE EFFICIENCY,WATER AND NITROGEN AVAILABLE) Gusti Rusmayadi; . Handoko; Yonny Koesmaryono; Didiek Hadjar Goenadi
Agromet Vol. 22 No. 1 (2008): June 2008
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

A number of crop growth simulation models have been developed using the radiation use efficiency (RUE) concept to predict crop growth and yield in various environments. These models generally calculate daily biomass production as the product of the quantity of radiation intercepted and RUE. Besides that biomass production was deterimined by water and nitrogen available factor. So, this research was carried out to quantify the RUE, biomass and leaf area index on Jatropha under rainfall condition, four levels of nitrogen fertilizer (N) and two and three population densities (P) planted twice. The experiments used a systematic Nelder fan design with 9 spokes and 4 – 5 rings were conducted at SEAMEO-BIOTROP field experiment in 2007. Data from the first experiment were used for parameterization and calibration and the second experiment data for model validation. Based on parameterization, we found that RUE can prediction above ground biomass accumulation of Jatropha were 0.94 (r=0.83) g MJ-1 to 1.3 (r=0.75) g MJ-1. Water availability was between ψ=-30 kpa and ψ=-1.5 MPa for field capacity and wilting point, respectively. Nitrogen demand of root, stem, leaf and grain N were (Ndemr=0.75), (Ndems=0.60), (Ndeml=2.53), and (Ndemg=2.41), respectively. Validation showed that model can simulate crop growth and development of Jatropha.

SEBARAN DAERAH RENTAN PENYAKIT DBD MENURUT KEADAAN IKLIM MAUPUN NON IKLIM(DISTRIBUTION OF VULNERABLE REGION OF DENGUE FEVER DISEASE BASED ON CLIMATE AND NON-CLIMATE CONDITION) Rini Hidayati; Rizaldi Boer; Yonny Koesmaryono; Upik Kesumawati; Sjafrida Manuwoto
Agromet Vol. 22 No. 1 (2008): June 2008
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

This research was aimed to investigate distribution of vulnerable region of dengue fever disease based on climate condition and population density in Indonesia. Climate condition, population density and vulnerability of district level were defined in the form of ordinal variable. The Koppen classification was used to proxy the climate condition. The population density was used to categorize the district level into small, medium and big cities. Regional vulnerability level was developed by using the values of IR and the 3-year consecutive incidence. The result of analysis using the frequency of incidence clarified that the population density and climate pattern influences the vulnerable level of the district. The big cities whose climate type are of Am (annual rainfall more than 1000 mm) and dry season is not extreme are the riskiest vulnerable region. On the contrary, the small cities whose dry season is not clear have high probability to be the safest region.

Co-Authors . Haruna . RINDITA A. Yanto Abdul Syakur Adeleyda M. W Lumingkewasa Adi Mulsandi Agus Suryanto Ahmad Faqih Aji Hamim Wigena Aji Irsyam N. Sukarta Akhmad Faqih Akhmad Faqih Alexander Knohl Ali, Ashehad Aswen Amsari Mudzakir Setiawan Amsari Mudzakir Setiawan Anung Wahyudi Aprilia, Lupita Ardhasena Sopaheluwakan Ardhasena Sopaheluwakan Aris Pramudia Aris Pramudia Ashehad Ashween Ali Asmari Amasih Aziz, Sandra A B.F. Simatupang Bambang Dwi Dasanto Bambang Guritno Budi Kartiwa Budi Kartiwa Christian Stiegler Daijiro Ito Didiek H. Goenadi Didiek Hadjar Goenadi Didiek Hadjar Goenadi Didy Sopandie Dodo Gunawan Dodo Gunawan Donaldi Sukma Permana Dulbari, Dulbari Dwi Guntoro E. Aldrian E. Eliyani Edi Santosa Edvin Aldrian Eko Sulistyono Eleonora Runtunuwu Eleonora Runtunuwu Erwin Eka Syahputra Makmur F Ismaini F. Djufri F. Fibrianty Fadjry Djufri Fadjry Djufri Felia Rizky Aulia Fendy Arifianto Ferdinan Yulianda Gusti Rusmayadi H.M.H Bintoro Djoefrie Hadi Susilo Arifin Hana F.T. Handoko Handoko Hanedi Darmasetiawan Hanedi Darmasetiawan Hari Wijayanto Haruna Haruo Suzuki Herdhata Agusta Hidayat Pawitan Hidayat Pawitan Hideki Sukimoto I Handoko I Handoko I Wayan Astika Impron Impron Irianto G. Irsal Las Irsal Las Justika Baharsjah Kiki, Kiki Knohl, Alexander Laode Sabaruddin Lisdar Idwan Sudirman Lukman H. Sibuea Lumingkewasa, Adeleyda M. W Ma'rufah, Ummu Magfira Syarifuddin Mamenun Mamenun Marjuki Marjuki Mufika Haryu Suci Fitriana Mulyono R. Prabowo Mulyono R. Prabowo Munif Ghulamahdi Nofi Yendri Sudiar P. Perdinan Rahmat Hidayat Resti Salmayenti Rini Hidayati Rizaldi Boer Rokhmin Dahuri S. B. Rushayati Sandra A Aziz Santikayasa, I Putu Setiapermas M.N. Siti Nadia Nurul Azizah Sjafrida Manuwoto Sofyan Zaman Sofyan, Devied Apriyanto Sopaheluwakan, Ardhasena Sulistyono, dan Eko Suman Sangadji Sutoro Sutoro Swastiko Priyambodo, Swastiko Syahrizal Koem Syarifuddin Karama Tania June Taufan Hidayat Taufan Hidayat Tetsuya Haseba Tetsuya Haseba Tugiyo Aminoto Ummu Ma'rufah Ummu Ma'rufah Upik Kesumawati Hadi Wahyujaya Wahyujaya Wido Hanggoro Yogi Sugito Yon Sugiarto Yopie Moelyohadi Yunus Subagyo Swarinoto Yusmin . Yusmin . Yustika S. Baharsyah Z. Noor

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