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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) AGRIVITA, Journal of Agricultural Science JURNAL PANGAN Jurnal Tanah dan Iklim JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT
Dedi Nursyamsi
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Economics, Econometrics & Finance Engineering Environmental Science Social Sciences

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Keragaan Varietas Inpara di Lahan Rawa Pasang Surut (Performance of Varieties Inpara in Swampland) Koesrini Koesrini; Muhammad Saleh; Dedi Nursyamsi
JURNAL PANGAN Vol. 22 No. 3 (2013): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v22i3.95

Abstract

Lahan rawa pasang surut merupakan lahan marjinal tetapi memiliki potensi cukup besar untuk usahatani padi apabila dikelola dengan menerapkan teknik budidaya yang tepat. Kunci utama keberhasilan usahatani padi di lahan rawa pasang surut adalah pengelolaan air yang tepat dan pemberian hara yang seimbang pada varietas padi yang adaptif. Inpara (Inbrida padi rawa) merupakan varietas yang daya adaptasinya di lahan rawa beragam. Tujuan penelitian ini adalah untuk mengevaluasi keragaan varietas Inpara di lahan rawa pasang surut. Kegiatan dilaksanakan di Kebun Percobaan Belandean, Kabupaten Barito Kuala, Propinsi Kalimantan Selatan pada musim kemarau 2012. Tanah di lokasi pengujian tergolong tipologi lahan pasang surut sulfat masam potensial dengan tipe luapan air B. Percobaan menggunakan rancangan acak kelompok, 6 perlakuan dan 5 ulangan. Ada enam varietas padi rawa yang ditanam, yaitu Inbrida Padi Rawa (Inpara) 1, 2, 3, 4, 5 dan Margasari. Pengujian ini menunjukkan bahwa potensi lahan sulfat masam potensial dapat ditingkatkan dengan menanam varietas unggul Inpara 1, 2, 3, 4 yang produktivitasnya lebih tinggi dari varietas Margasari. Varietas Inpara 5 lebih sesuai ditanam di lahan rawa lebak. Kenaikan hasil Inpara 1, 2, 3, 4 dibandingkan varietas Margasari berturut-turut adalah 0,99, 1,39, 098, 0,98 ton GKG/ha. Kenaikan hasil varietas Inpara nyata sampai sangat nyata secara statistik.Swampy lands or wetlands are marginal lands but they have considerable potentials for rice farming. The main key solution to overcome swampy lands constraints are nutrient and water management as well as the use of adaptive rice varieties. Inparas (inbred swampy land rice) is variety released by the Indonesian Agency for Agricultural Research and Development (IAARD) which is adaptive to swampy land conditions. The purpose of this research was to evaluate the performances of Inpara varieties in tidal wetlands. The field experiment was carried out in Belandean Experiment Station, Barito Kuala District, South Kalimantan Province in the dry season of 2012. Soil of the site is classified as potential acid sulfate soil with type B overflow. The research was arranged in Randomized Completely Design, with 6 treatments and 5 replications. There were planted six swampy land varieties, i.e. Inpara 1, 2, 3, 4, 5 and Margasari. The result showed that potential acid sulfate soil could be increased by planting Inpara 1, 2, 3, and 4 which had higher yield than that of Margasari variety. Inpara 5 variety was more suitable to be planted on fresh water wetlands. The increasing yield of Inpara 1, 2, 3, and 4 compared to that of Margasari variety were 0.99, 1.39, 0.98, 0.98 ton/ha, respectively. The increasing yield of Inpara varieties was significantly different. 
Residu Pestisida di Sentra Produksi Padi di Jawa Tengah Asep Nugraha Ardiwinata; Dedi Nursyamsi
JURNAL PANGAN Vol. 21 No. 1 (2012): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v21i1.103

Abstract

Dewasa ini pestisida sudah merupakan bagian dari sistem usahatani sebagianbesar petani di Indonesia. Penggunaan pestisida semakin intensif dan cenderung tidak terkontrol; akibatnya agroekologi pertanian dan kesehatan manusia sebagai konsumen menjadi terabaikan.Penelitian ini bertujuan untuk mengidentifikasi status penggunaan pestisida dan residunya yang dilaksanakan dengan mengambil contoh tanaman padi, tanah, dan air di sentra produksi padi di Jawa Tengah. Konsentrasi residu pestisida dalam contoh ditentukan dengan menggunakan kromatografi gas (GC). Hasil penelitian menunjukkan bahwa petani di Jawa Tengah sudah terbiasa menggunakan pestisida karena diyakini bahwa pestisida ampuh dalam menanggulangi serangan organisme pengganggu tanaman (OPT). Namun demikian penggunaan pestisida di petani umumnya belum berdasarkan prinsip pengelolaan hama terpadu (PHT), yaitu pestisida digunakan dalam jumlah sesedikit mungkin dalam batas yang efektif dan diaplikasikan apabila tingkat kerusakan tanaman atau kepadatan populasi organisme pengganggu melampaui batas toleransi ambang ekonomi. Meskipun penggunaan insektisida organoklorin telah dilarang dan hasil wawancara dengan petani tidak ditemukan penggunaannya di lahan sawah, tetapi residunya di lapangan masih ditemukan sehingga berpotensi mengganggu kelestarian lingkungan. Residu insektisida organoklorin dan organofosfat telah ditemukan dalam contoh tanaman padi, tanah, dan air di sentra produksi padi di Jawa Tengah (Kabupaten Grobogan, Demak, Pemalang, Brebes, Tegal Cilacap, Kebumen, Sragen, dan Klaten), sedangkan residu insektisida karbamat hanya ditemukan di Kabupaten Klaten, Demak, Cilacap, dan Pati.Presently, pesticide has already been a part of farming system of most farmers in Indonesia. The use of pesticides has become more intensive and tended to be uncontrolled; consequently agro-ecological agriculture and human health as consumers have becomeneglected. This research is aimed to identify status of use of pesticides and their residues that is carried out by collecting rice plant, soil, and water samples from paddy fields of rice production centers in Central Java. Concentration of pesticides residue in the samples is determined by using Gas Chromatography (GC) method. The results show that farmers in Central Java use the pesticides because they believe that the pesticides are significantly effective in tackling pests attack. However, the use of pesticides by farmers generally has not been based on the principles of integrated pest management(IPM), a pesticide used inamounts as little as possible withinthe effective limits (no-exaggeration) and it is applied when the extent of damage to crops or pests population densities exceeds the economic threshold. Although the use of insecticides of organochlorine has been prohibited and the interview result reveals that the farmers do not use it in paddy fields, the residues on the paddy field are still found, so that they potentially pollute the environment. Organochlorine and organophosphate insecticide residues are found at rice plants, soil, and water samples taken from paddy field of riceproduction centers in Central Java (District Grobogan, Demak, Pemalang, Brebes, Tegal,Cilacap, Kebumen, Sragen, and Klaten), whereas the carbamate insecticide residuesare only found in Klaten, Demak, Cilacap, and Pati Districts. 
Pengelolaan Tanaman Terpadu pada Padi Sawah yang Ramah Lingkungan (Integrated Crop Management in Rice Environmentally Friendly) Anicetus Wihardjaka; Dedi Nursyamsi
JURNAL PANGAN Vol. 21 No. 2 (2012): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v21i2.146

Abstract

Sistem usahatani ramah lingkungan diartikan sebagai usahatani untuk memperoleh produksi optimal tanpa merusak lingkungan baik secara fisik, biologis dan ekologis. Selain itu sistem ini juga harus menjamin keberlanjutan sistem produksi. Pendekatan Pengelolaan Tanaman Terpadu (PTT) pada padi sawah yang bersifat ramah lingkungan diyakini dapat mengakomodasi teknologi untuk peningkatan produksi padi, sekaligus memelihara kelestarian lingkungan biofisik, serta menjaga keberlanjutan sistem produksi padi sawah.Penerapan teknologi mitigasi emisi Gas Rumah Kaca (GRK) di lahan sawah selain dapat mempertahankan dan meningkatkan produksi padi, juga dapat mereduksi emisi GRK secara signifikan.Dengan demikian maka untuk menjamin peningkatan produksi padi, sekaligus memelihara kelestarian lingkungan lahan sawah serta menjaga keberlanjutan sistem produksi padi, maka teknologi mitigasi emisi GRK di lahan sawah perlu ditambahkan dalam paket PTT.Environmentally friendly farming system is defined as afarmto obtain an optimal production without physically, biologically andecologically damaging the environment. In additionthis system should also ensure the sustain ability of production systems. Integrated crop management (ICM) aproachin paddy ricefield is believed tobe able to accommodate environmentally friendly technologies which increaserice production, maintain sustainability of biophysical environment, as well asmaintain sustainability of rice production systems. Application of GlassHome Gas (GHG) emissions mitigation technologies in paddy rice field do not only maintainand increaserice production, but also reduce GHG missions significantly. Thus,toguarantee an increase inrice production, sustainability of bio physical environment, and sustainability of rice production systems, the GHG emission mitigation technology inpaddyrice fields should be addedin the ICM package.  
Efektivitas dan Neraca Hara Pupuk SNL dan SNP untuk Jagung pada Tanah Inceptisol di Bogor Dedi Nursyamsi
JURNAL PANGAN Vol. 20 No. 3 (2011): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v20i3.164

Abstract

Percobaan lapang yang bertujuan untuk mempelajari efektivitas dan kontribusi hara pupuk SNL dan SNP terhadap tanaman jagung telah dilaksanakan pada tanah Inceptisol,di Bogor pada MK 2008. Percobaan terdiri dari 2 unit, yaitu unit SNL dan SNP dengan menggunakan tanaman indikator jagung hibrida varietas pioneer 21 (P21). Perlakuan ditata dalam Rancangan Acak Kelompok dengan 8 perlakuan dan 3 ulangan. Perlakuan merupakan kombinasi dari 2 faktor, yaitu faktor pertama takaran pupuk NPK : 0, 25, 50, dan 100 persen dosis anjuran berdasarkan uji tanah, sedangkan faktor kedua adalah pupuk SNL : 0 dan 10 l/ha (unit I) dan SNP 0 dan 10 kg/ha (unit II). Hasil penelitian menunjukkan bahwa pemberian SNL dan SNP tidak efektif meningkatkan pertumbuhan dan hasil tanaman jagung apabila dosis NPK < 100 persen dosis anjuran. Pupuk SNL efektif meningkatkan pertumbuhan dan hasil jagung jika pupuk NPK diberikan dengan dosis 100 persen dosis anjuran. Pemberian 10 l/ha SNL pada pemupukan NPK 100 persen memberikan hasil biji dan keuntungan bersih tertinggi, yakni masing-masing 8,80 t/ha dan Rp. 6.155.000,-/ha/musim. Walaupun demikian pemberian SNL hanya menyumbang hara : 0,002 kg N; 0,003 kg P2O5; dan 0,002 kg K2O per hektar. Dengan demikian peningkatan hasil biji tersebut sangat tergantung pada kontribusi ketersediaan hara N, P, dan K dalam tanah.Field experiments aimed to study the effectiveness and nutrients contribution of SNL and SNP on maize growth were conducted at Inceptisol, in Bogor at DS 2008. The experiment consisted of 2 units, i.e. SNL and SNP, and used pioneer 21 variety of maize as plant indicator. The experiments used Randomize Complete Block Design with 8 treatments and 3 replicates. The treatments were combination of 2 factors. The first factor was rate of NPK application, i.e.: 0, 25, 50, and 100 percent of reccomendation doses based on soil analyses and the second one was the application of SNL i.e. 0 and 10 l/ha (unit I) or SNP i.e. 0 and 10 kg/ha (unit II). The results showed that application of SNL and SNP were not effective in increasing maize growth unless NPK doses > 100 percent of reccomendation doses. Application of 10 l/ha of SNL combined with 100 percent doses of NPK was effective in increasing maize growth and gave the highest grain yield (8.80 t/ha) as well as net profit (Rp. 6.155.000,-/ha/season). Nutrients contribution from the fertilizer, however, were only 0.002 kg N, 0.003 kg P2O5, and 0.002 kg K2O per hectare. Thus, increase of the yield was depending on contribution of N, P, and K availabilities from the soils. 
Efektivitas dan Neraca Hara Pupuk SNL dan SNP dalam Tanah Padi untuk Sawah (Oryza sativa L.) pada Inceptisol Karawang (Effectiveness and Nutrient Balance ofSNL and SNP Fertilizers in the Soilfor Paddy Rice (Oryza sativa L.) at Inceptisol of Karawang) Dedi Nursyamsi
JURNAL PANGAN Vol. 21 No. 4 (2012): PANGAN
Publisher : Perum BULOG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33964/jp.v21i4.313

Abstract

Pemupukan merupakan tindakan yang harus dilakukan untuk meningkatkan produksi padi nasional. Pupuk SNL dan SNP yang masing-masing berbentuk cair dan bubuk serta diaplikasikan dengan cara disemprotkan ke tubuh tanaman dan permukaan tanah berpotensi meningkatkan produksi padi sawah. Penelitian yang bertujuan untuk mempelajari efektivitas dan neraca hara pupuk SNL dan SNP dalam tanah untuk padi sawah (Oryza sativaL.) telah dilaksanakan di Tanah Inceptisol Karawang pada MH 2007/2008. Dua unit percobaan lapang (percobaan SNL dan SNP) menggunakan rancangan faktorial (dua faktor) dalam rancangan acak kelompok, 3 ulangan, dan padi variets Ciherang. Faktor pertama adalah 0, SNL 5 L/ha, dan SNL 5 L/ha +SNP 5kg/ha (unit pertama), serta 0dan SNP 5kg/ha (unit kedua). Faktor kedua adalah 0, NPK 25 persen, NPK 50 persen, dan NPK 100 persen berdasarkan uji tanah. Hasil penelitian menunjukkan bahwa kombinasi pupuk SNL dan SNP efektif meningkatkan hasil padi sawah jika pupuk NPK diberikan dengan dosis 100 persen dosis anjuran. Pemberian SNL 5 L/ha dan SNP 5 kg/ha pada pemupukan NPK 100 persen memberikan hasil gabah tertinggi (7,35 t/ha). Walaupun demikian pemberian kedua pupuk tersebut hanya menyumbang hara: 0,575 kg N, 0,292 kg P205, dan 0,276 kg Kpper hektar. Dengan demikian peningkatan hasil gabah tersebut sangat tergantung pada kontribusi ketersediaan hara N, P, dan K dalam tanah.Fertilizer application is a must to increase national rice production. SNL and SNP fertilizers whichhave liquid and powder forms respectively and are usually aplied on plant and soil surface have potential to incrase rice production. Experiments aimed to study the effectiveness and nutrient balance of SNL and SNP fertilizersin soil for paddy rice (Oryza sativa L) was conducted at Inceptisols ofKarawang in WS 2007/2008. Two field experiments (SNL and SNP experimets) were arranged using factorial design in a Randomized Completely Block Design, three replications, and rice of Ciherang variety. The first factor was: 0, SNL 5 Uha, and SNL 5 Uha +SNP 5 kg/ha (first unit), as well as 0 and SNP 5 kg/ha (second unit), while the second factor was: 0, NPK 25percent, NPK 50percent, dan NPK 100 percent base on soil test. The results showed that combination ofSNL and SNP effectively increased yield ofpaddy rice when NPK fertilizer was given at a dose of100 percent recommendations. Use of SNL 5 Uha and SNP 5 kg/ ha combined with NPK fertilizersat 100 percent reccomendation gave the highest grain yield (7.35 t/ha). Nevertheless the use ofboth fertilzers only contributed nutrients of0.575 kg N, 0,292 kg P205, and 0,276 kg K20 perhectare. Thus the increase of grain yield was highly dependent on the contribution of nutrient availability ofN, P, and K from the soil.
Effectiveness of Some Ameliorants in Reducing Co2 and N2o Emission in Corn Planting in Peat Land Eni Maftuah; R S Simatupang; Herman Subagyo; Dedi Nursyamsi
Journal of Wetlands Environmental Management Vol 4, No 1 (2016): January-June
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (716.994 KB) | DOI: 10.20527/jwem.v4i1.50

Abstract

Amelioration is very important in supporting plant growth in peat land. The use of low emission ameliorant will support the sustainability of agricultural system in peat land. The research is intended to study the effectiveness of some ameliorants in reducing CO2 and N2O emission in corn planting in peat land. The research was conducted in April to October 2013, in Kalampangan Village Palangkaraya Municipality Central Kalimantan. Ameliorant materials used were chicken manure fertilizer, domolite, mineral soil, paddy husk biochar, coconut shell biochar. Ameliorant treatments applied were the type of ameliorant compositions, those were (A1) 80% chicken manure fertilizer + 20% dolomite, (A2) 20% chicken manure fertilizer + 20% agricultural weeds + 20% spodosol mineral soil + 20% “purun tikus” (eleocharis dulcis) compost + 20% dolomite, (A3) 19% chicken manure fertilizer + 9% dolomite + 72% mineral soil, (A4) 100% coconut shell biochar, (A5) paddy husk biochar, (A6) farmer’s way (20% ash + 40% spodosol mineral soil + 40% chicken manure fertilizer) and control. Experiment design used a Randomized Factorial Block Design, with 3 repetitions. Ameliorant dosage used was 7.5 t/ha. The crop used was hybrid corn. Parameters which were observed periodically were emission of CO2 and N2O, ground water level height, soil pH and Eh, once a month for 5 periods. The research result showed that ameliorant was capable of reducing emission of both CO2 and N2O in corn planting in peat land. Coconut shell biochar could reduce emission of CO2 up to 26% as compared with control, whereas paddy husk biochar could reduce emission of N2O up to 52% as compared with control.
Carbon Stock Stratification of Peat Soils in South Kalimantan, Indonesia Siti Zakiah; Muhammad Noor; Dedi Nursyamsi
Journal of Wetlands Environmental Management Vol 2, No 2 (2014): July-December
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.192 KB) | DOI: 10.20527/jwem.v2i2.26

Abstract

Carbon stock in peat soils is very high, it is necessary to prudent in its management because peat soils is emitting greenhouse gases such as CO2 during land clearing due to oxidation of peat layer.  This research was conducted to study soil carbon stock stratification in relation to soil physical and chemical properties. The carbon stock stratification was based on maturity degrees of peat.  The study was conducted in Pulau Damar Village, Hulu Sungai Utara District, South Kalimantan Province on land use rubber.  The location of the study area was determined by using the purposive sampling method.  All data obtained were analyzed by Excel spreadsheets and drawn on a CorelDraw 12. The results showed that the amount of carbon stock was influenced by the maturity degrees of peats, peat sapric degres has higher carbon stock than of hemik and fibric with a ratio of  2.0: 1.5: 1.  The relationship between soil carbon stock with soil physic (Bulk Density, BD) and chemical properties (pH, Eh, Fe, and total-N) were not significantly.
Co-Authors , Suprihati . HUSNAIN . Nurjaya Achmad Noerkhaerin Putra Agus Sofyan Anicetus Wihardjaka ANTONIUS KASNO Asep Nugraha Ardiwinata D. SETYORINI Diah Setyorini Eni Maftu&#039;ah Eni Maftuah Herman Subagyo Iswandi Anas J. SRI ADININGSIH K. Idris Koesrini Koesrini L. ANGGRIA L.R WIDYOWATI M.T SUTRIADI Mangku E Suryadi Muhammad Noor Muhammad Saleh R S Simatupang SUPIYANDI SABIHAM Suwarno Suwarno Triyani Dewi UNDANG KURNIA