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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Agromet

Yon Sugiarto

Department Of Geophysics And Meteorology, Faculty Of Mathematics And Natural Sciences, IPB University, Dramaga Campus, Bogor, Indonesia 16680

Author-ID : 843887

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Articles

KAJIAN KESESUAIAN LAHAN TANAMAN CENGKEH (Eugenia aromatica L.) BERDASARKAN ASPEK AGROKLIMAT DAN KELAYAKAN EKONOMI (Studi kasus Provinsi Sulawesi Selatan)CROP LAND SUITABILITY FOR CLOVE (Eugenia aromatica L.)... Anisa Isnaeni; Yon Sugiarto
Agromet Vol. 24 No. 2 (2010): DECEMBER 2010
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Indonesian plantations are increasingly expanding and making progress so as to support the government programs in Indonesia Agricultural development is necessary, especially the plantation area of clove plantations which have many benefits and uses for the community.The aims of this study is to find out the suitability of the clove crop land in South Sulawesi province and the level of effectiveness in investing land. Methodology used is based on suitability area for agroclimate parameters and economical feasibility.The results of analysis shown that South Sulawesi Provinve are potential for extension based on the suitability of clove plants Agro-climate and the closure of its land in the amount of 26.743 km2.There are three land suitability classes, highly suitable areas or S1 (1.897 km2), moderately suitable areas or S2 (23.120 km) and marginally suitable areas or S3 (990 km2). In addition, the region still has the potential areas of land for plantation development is a form of forest land with an area of 8.694 km2.These three land suitabilitieshave feasibility of investment net profit in the S1 field with the present value of Rp 26.841.000/ha, 30,1% IRR, and BCR of 2,16.Net profit in the land S2 is Rp 16.864.000/ha, 24% IRR, and BCR of 1,73%, while net profit on the land S3 is Rp 2.723.000/ha.Areas of land which became the main development priorities with highprioritylandpresentinsixdistrictsnamelyWajo,Jeneponto,Sinjai,Bulukumba,Barru,andBoneIndonesian plantations are increasingly expanding and making progress so as to support the government programs in Indonesia Agricultural development is necessary, especially the plantation area of clove plantations which have many benefits and uses for the community.The aims of this study is to find out the suitability of the clove crop land in South Sulawesi province and the level of effectiveness in investing land. Methodology used is based on suitability area for agroclimate parameters and economical feasibility.The results of analysis shown that South Sulawesi Provinve are potential for extension based on the suitability of clove plants Agro-climate and the closure of its land in the amount of 26.743 km2.There are three land suitability classes, highly suitable areas or S1 (1.897 km2), moderately suitable areas or S2 (23.120 km) and marginally suitable areas or S3 (990 km2). In addition, the region still has the potential areas of land for plantation development is a form of forest land with an area of 8.694 km2.These three land suitabilitieshave feasibility of investment net profit in the S1 field with the present value of Rp 26.841.000/ha, 30,1% IRR, and BCR of 2,16.Net profit in the land S2 is Rp 16.864.000/ha, 24% IRR, and BCR of 1,73%, while net profit on the land S3 is Rp 2.723.000/ha.Areas of land which became the main development priorities with highprioritylandpresentinsixdistrictsnamelyWajo,Jeneponto,Sinjai,Bulukumba,Barru,andBone

Analysis of Climate Index with Historical Burn Analysis Method for Climate Change Adaptation (A Case Study in Pacitan District, East Java) Yon Sugiarto; Woro Estiningtyas; Wahyu Sukmana Dewi
Agromet Vol. 31 No. 1 (2017): JUNE 2017
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Drought recurrently occurs in Indonesia, and it is one of the climate-related hazards that has a major impact on agriculture and food security. However, there is no a scheme, which allows any damages in agriculture associated with drought event will get an insurance. This study aims to analyze the climate index based on the potency of drought in Pacitan District, East Java to support the development of climate index insurance as an effort to climate change adaptation. This study used a climate index derived from monthly rainfall data, which was calculated based on the historical burn analysis (HBA) method. We examined climate index and measured exit value as representing of the lowest value which payment of insurance should be fully paid. Our results showed that the value varies among sub-districts in Pacitan. Kebonagung sub-district revealed the highest exit value (89 mm), which means the insurance company should pay the full insurance coverage if the rainfall in the period insured below 89 mm. The lowest exit value (18 mm) was in Pringkuku sub-district. Our finding revealed that the index HBA is suitable to be applied in regions with limited climate data. Furthermore, our approach could be one of the strategies to cope with drought to stabilize rice production during the dry season. For wide implementation, supports from government through regulation is needed.

ANALISIS DAMPAK ENSO (EL-NINO SOUTHERN OSCILLATION) TERHADAP TINGKAT KEKERINGAN UNTUK TANAMAN PANGAN DAN PALAWIJA (STUDI KASUS : SULAWESI SELATAN) Yon Sugiarto; Dori Kurniawan
Agromet Vol. 23 No. 2 (2009): December 2009
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Weather and climate variability is a long-term weather changes that are characterized by fluctuations and deviations from normal conditions. One possible cause is the ENSO (El-Nino Southern Oscillation) which affected in drought events. This research was conducted to determine and analyze the level of drought in South Sulawesi due to the influence of ENSO and compare the production of food crops and secondary food crops in normal years and ENSO.Drought index is calculated based on the Palmer method by using data of rainfall, air temperature and soil moisture as input. Based on the calculations using the method of Palmer drought index, the regions with monsoon rain patterns have a range of values between -22.71 drought until 18:23, Equatorial patterns ranging from -4.03 to 5:07, and on local patterns rangedfrom -8.57 until 10:07. Verification test results on the drought index of crop production data showed that each ENSO event is always followed by a decline in rice production, especially of rice fields. Food crop production generally tends to increase at each ENSO event because most crops are plants that are resistant to drought, particularly local varieties that have adapted well to their environment. Thus, the drought caused by the influence of ENSO can affect the production of food crops and secondary food crops.

Projection of Rice Blast Diseases in West Java Region based on Climate Change Scenario Aji Irsyam N. Sukarta; Yon Sugiarto; Yonny Koesmaryono
Agromet Vol. 32 No. 2 (2018): DECEMBER 2018
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Rice production in Indonesia has faced many challenges including disease outbreak leading to crop failure. Blast is a common disease, which is often found in paddy, that able to inhibit its growth and development. Here, we present simulation modeling to predict blast outbreak under climate change projection scenario in west Java, Indonesia. Two climate projections namely RCP4.5 and RCP8.5 were employed as input for EPIRICE epidemiological model. With this model we anaysed the potency of blast outbreak for 2021-2050. Then we compared the area of the projected blast with the output from current climate condition (1996-2005, as a baseline). Our results show that the potency of blast outbreak was in a low level under baseline. The area indicating a low level of outbreak was observed for both climate projections. Our findings revealed that a decreasing trend on the outbreak is expected for 2021-2050. However, an increased number of area having blast outbreak was observed especially in mountains region as many of 2%.day and 6%.day for RCP4.5 and RCP8.5, respectively.

Potential of Green Leafhopper Attack (Empoasca sp.) in Tea Plantation Based on Climate Change Scenarios Dwi Adelianingsih; Rini Hidayati; Yon Sugiarto
Agromet Vol. 33 No. 2 (2019): DECEMBER 2019
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Pest growth is closely related to the climate conditions. This study aimed to analyze the impact of climate variability and climate change on the potential attack of green leafhopper (Empoasca sp.) on tea plantations at PTPN VIII Gunung Mas. The analysis was carried out to calculate the value of Ecoclimatic Index (EI) based on the functions of the compare years and the compare location in CLIMEX model. Pest suitability in the future was projected using RCP 4.5 and 8.5 climate scenarios, which were derived from MIROC 5 and CCSM 4 climate model outputs. The result indicated that Gunung Mas Tea Plantation was suitable for Empoasca sp. growth. The EI value (58) in the baseline year (2012-2017) confirmed the suitability. Climate variability influences the suitability for Empoasca sp. growth. During El-Niño, the EI value decrease substantially (~26%). On the other hand, the EI value is projected to slightly increase in the future for both climate scenarios.

Estimation of Oil Palm Total Carbon Fluxes Using Remote Sensing Artika; Tania June; Resti Salmayenti; Yon Sugiarto; Handoko; Christian Stiegler; Alexander Knohl
Agromet Vol. 37 No. 1 (2023): JUNE 2023
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.37.1.12-20

Net primary production (NPP) is one of the approaches used to estimate the amount of carbon sequestration by plants. This research aims to estimate the total carbon flux exchanged from different ages of oil palm using remote sensing. The study site was at the PTPN VI Batang Hari, Jambi, Sumatra, Indonesia. The amount of carbon sequestration by oil palm plantations at PTPN VI Batang Hari, Jambi can be estimated using remote sensing based on the light use efficiency (LUE) model. The results showed that the oil palm age affects the amount of carbon sequestrated. The lowest Net primary production value was found at one year of planting 4.28 gCm-2day-1, and the highest was 9.38 gCm-2day-1 at 20 years of planting. The model LUE output was validated using Eddy covariance data and the results showed a low error and a high accuracy rate with RMSE = 0.05 gCMJ-1, R2 = 92%, and p-value = 0.04. We concluded that the LUE model can be used with high accuracy to estimate the amount of carbon absorption of oil palm when direct measurement is unavailable.

Micrometeorological Method in Determining Plant Capacity to Absorb Pollutant: Oil Palm Case Study Zaâ€™immatul Muâ€™allimah; Tania June; Resti Salmayenti; Yon Sugiarto; Handoko; Christian Stiegler; Alexander Knohl
Agromet Vol. 37 No. 1 (2023): JUNE 2023
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.37.1.44-53

The vegetation canopy's height and characteristics directly affect the turbulence that controls the exchange of mass and energy between the vegetation and the surrounding atmosphere. Turbulence also controls the momentum transfer towards the mass-carrying plant canopy and the accompanying atmospheric properties so that vegetation can contribute to pollutant deposition. This study aims to estimate the canopy capacity of oil palms to absorb pollutants based on their momentum transfer, the influence of atmospheric stability dynamics, and rainy and dry periods upon absorbed pollutants from PTPN VI in Jambi province for the period of January to December 2015 used micrometeorological observation data. The results showed that the dry deposition capacity value at the stable, neutral, and unstable atmospheric conditions were 2.06 x 10-3 kg/m2, 3.50 x 10-3 kg/m2, and 4.35 x 10-3 kg/m2, respectively. The stable or unstable conditions affected the momentum transfer through decreasing or increasing turbulence. In stable conditions, the cooling of the atmosphere impacts the turbulence to be restrained. The result also showed that the dry deposition capacity during the dry and rainy periods were 4.5 x 10-3 kg/m2 and 2.9 x 10-3 kg/m2, respectively. Further, atmospheric conditions tended to be unstable during the dry period, while the rainy period tended to be stable. This research showed that the momentum transfer method can estimate gas type pollutants by vegetation.

Pemberian Mulsa dalam Budidaya Cabai Rawit di Lahan Kering: Dampaknya terhadap Hasil Tanaman dan Aliran Permukaan Heryani, Nani; Kartiwa, Budi; Sugiarto, Yon; Handayani, Tri
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 41 No. 2 (2013): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The problem of plant cultivation in dry upland with slope of >15° is the high soil erosion that result in high rate of sedimentation in the downstream of watershed. One way of overcoming this problem is by utilization of mulches. The objective of the experiment was to study the effect of mulch application on growth and yield of chilli (Capsicum frutescensL.).The experiment was conducted from January 2010 until June 2011 at Selopamioro micro watershed at Imogiri Subdistrict, Bantul District, Special Region of Yogyakarta. The experiment was arranged in a randomized complete block design consisted of four mulch treatments (rice straw, litter, plastic/silver black polyethylene, and without mulch) and four replications. The observed variables were the growth parameter (plant height), soil moisture content, soil temperature, and yield (number and weight of chilli). The result showed that application of mulches did not affect plant height and yield of chilli, but increased number of fruit. The best mulch for chilli crops in upland area was rice straw, that yielded the highest increase in number of fruit. Mulch as a soil conservation practice reduced runoff coefficient, while dicharge and extended of the reponse time were reduced only at rainfall less than 21 mm.Keywords: Capsicum frutescensL.,mulch, runoff, upland area

Co-Authors Aji Irsyam N. Sukarta Alexander Knohl Alexander Knohl Anisa Isnaeni Artika Budi Kartiwa Christian Stiegler Christian Stiegler Dori Kurniawan Dwi Adelianingsih Handoko Handoko Nani Heryani Resti Salmayenti Rini Hidayati Tania June Tri Handayani Wahyu Sukmana Dewi Woro Estiningtyas Yonny Koesmaryono Zaâ€™immatul Muâ€™allimah

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