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INDONESIA
Jurnal Tanah dan Iklim
Published by Balai Besar Penelitian dan Pengembangan Sumberdaya lahan Pertanian
ISSN : 14107244     EISSN : 27227723     DOI : http://dx.doi.org/10.21082/jti.v44n1.2020.19-29
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal TANAH dan IKLIM memuat hasil-hasil penelitian bidang tanah dan iklim dari para peneliti baik dari dalam maupun dari luar Balai Besar Litbang Sumberdaya Lahan Pertanian. Jurnal ini juga dapat memuat informasi singkat yang berisi tulisan mengenai teknik dan peralatan baru ataupun hasil sementara penelitian tanah dan iklim.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 257 Documents
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COVER JTI VOL 37 NO. 2 Noegroho, Wahid
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 37, No 2 (2013)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v37n2.2013.%p

Abstract

Cover JTI
CHARACTERISTIC AND RUBBER PLANT REVEGETATION AT THE POST COAL MINING LAND KUTAI KARTANEGARA REGENCY ., SUJIMAN; SITORUS, SANTUN R.P.; OKTAVIANI, R.; ., MACHFUD
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The research objective was to analyse the characteristic of post coal mining land in Kutai Kartanegara Regency and to find out what commodities that suitable for vegetation of this land. The methode of research was using primary data including soil sampling taken with purposive sampling and composite methode. Rubber planting experiment was also carried out at two different soil conditions, that was land with original soil and land withtailing soil (overburden of coal mining). Both soil conditions were employed experimental using randomized completely block design with four treatments, i.e. : (1) without fertilizer, (2) liming, (3) manure fertilizer, and (4) manure fertilizer + liming. Secondary data for commodity research was taken from bureau of statistic centre, labour service, and mining service of Kutai Kartanegara Regency.The result showed that reclaimed land (5-20 years) was classified as S2 class of land suitability for rubber. The competitive commodities of Kutai Kartanegara Regency were rubber, coffea, and coconut, meanwhile strategic commodities were oil palm, pepper, and cocoa. The result of rubber experiment showed that post coal mining land with original soil significantly affective to leaf amount, height, and stem diameter of rubber.
PENENTUAN NILAI AMBANG CURAH HUJAN UNTUK DETEKSI DINI KEKERINGAN PADA TANAMAN PADI SAWAH: STUDI KASUS PROVINSI JAWA BARAT DAN SULAWESI SELATAN Surmaini, Elza; Hadi, Tri Wahyu; Subagyono, Kasdi; Puspito, Nanang Tyasbudi
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 38, No 2 (2014)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v38n2.2014.79-87

Abstract

Abstrak. Defisit curah hujan dalam periode tertentu merupakan faktor dominan yang menentukan kekeringan agronomis. Oleh karena itu, nilai ambang curah hujan sebelum waktu tanam yang berpotensi menyebabkan kekeringan perlu diketahui untuk deteksi dini. Penelitian ini bertujuan untuk mengkonfirmasi bahwa penurunan curah hujan menyebabkan kekeringan agronomis pada tanaman padi sawah dan menentukan nilai ambang curah hujan yang berpotensi menyebabkan pada musim kemarau. Nilai ambang curah hujan dianalisis secara statistik menggunakan persamaan regresi polinomial antara Indeks Dampak Kekeringan Padi (IDKP) dengan curah hujan dan debit sungai. Model GR4J digunakan untuk menentukan korelasi antara curah hujan dan debit serta mensimulasi debit sungai pada tahun-tahun El Niño. Hasil analisis menunjukkan bahwa curah hujan cukup akurat digunakan sebagai indikator untuk deteksi dini kekeringan agronomis tanaman padi pada sawah tadah hujan dan sawah irigasi. Nilai ambang curah hujan pada sawah tadah hujan adalah 60-70 mm, sedangkan untuk sawah irigasi adalah 20 mm. Abstract. Prolonged deficit of rainfall is a dominant factor affecting drought severity. Therefore, rainfall threshold prior to planting time that potentially lead to agronomic drought need to be identified for early detection purpose. This research aimed to confirm the adequacy of rainfall for measuring drought on paddy rice, and to assess rainfall thresholds as indicator of drought on paddy rice during dry season planting. Rainfall thresholds were statistically analyzed using a polynomial regression between Paddy Drought Impact Index (PDII) and rainfall and river discharge. GR4J model was used to assess correlation between rainfall and river discharge and to simulate river discharge in El Niño years. We deduce that rainfall is an appropriate indicator for early detection agronomic drought for both rainfed and irrigated paddy rice. We also emphasize that the drought events should be predicted by rainfall thresholds whose values are 20 mm for irrigated paddy field and between 60 mm to 70 mm in rainfed paddy field.
MINERALOGICAL COMPOSITION AND PHYSICO-CHEMICAL CHARACTERISTIC OF FOREST LAND SOIL DEVELOPED FROM ACID SEDIMENTARY ROCKS IN RIAU PROVINCE SUHARTA, NATA; PRASETYO, BAMBANG HENDRO
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 28 (2008): Desember 2008
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n28.2008.%p

Abstract

Exploitation forest land for food crops agricultural use often limited by drastically change of soil properties and soil characteristics after two or three years of usage. The loose of organic matter through mineralization processes and erosion is causal factor for decreasing fertility of the soils. To study soil properties and soil characteristics as foundation for agricultural use, the forest land derived from sedimentary rock in Riau Province have been studied. The Research result indicates that parent material has great influence on mineral composition, physical and chemical properties of the soils. Soil from sedimentary rock in the study area were very developed, indicated by domination of kaolinite and very low of mineral reserve. Soils derived from claystone have better chemical properties compare to soil derived from sandstone as shown by exchangeable bases, cation exchange capacity, and potential K, but limited by highly Al exchangeable. The physical properties of the soils indicate that the soil is susceptible for erosion and compaction. For that reasons, the exploitation of forest land for agriculturing or forest plantation use need soil conservation practices, avoid the slopping area (>8%) especially for food plantation, and fertilizer. Changing the forest land to agricultural land not only increase mineralization of organic matter but also interrupt biological cycles that influential on decreasing soil fertility.
PENINGKATAN PRODUKTIVITAS KEDELAI (GLYCINE MAX L.) PADA TYPIC KANHAPLUDULTS DENGAN APLIKASI PEMBENAH TANAH DAN PUPUK NPK Hartatik, Wiwik; Purwani, Jati
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 41, No 2 (2017)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v41n2.2017.123-134

Abstract

Abstrak: Penelitian bertujuan mengetahui pengaruh beberapa jenis pembenah tanah dan pupuk NPK terhadap sifat tanah serta produktivitas tanaman kedelai. Penelitian menggunakan Rancangan Petak Terpisah (Split Plot), dengan 3 ulangan. Petak utama: A1= kapur pertanian 1,23 t ha-1, A2= kapur pertanian 200 kg ha-1, A3= kapur aktif 200 kg ha-1, A4= Biochar 2,5 ton ha-1, dan A5= senyawa humat 20 liter ha-1. Anak petak: B1 = kontrol, B2 = NPK, B3=3/4 NPK, dan B4 = 3/4 NPK + Tithoganic 2 ton ha-1. Hasil penelitian menunjukkan bahwa perlakuan kapur aktif tidak efektif dalam meningkatkan pH tanah dan bobot biji kering kedelai. Pemberian kapur pertanian dosis 1,23 t ha-1 (kejenuhan Al 20%) nyata meningkatkan pH, Ca-dd, KB dan menurunkan Al-dd selah panen serta meningkatkan bobot biji kering kedelai dari 0,5 menjadi 0,9 ton ha-1. Biochar nyata meningkatkan K-potensial, Mg dan K dapat ditukar tetapi tidak nyata meningkatkan bobot biji kering kedelai. Senyawa humat tidak nyata berpengaruh terhadap sifat kimia tanah dan bobot biji kering kedelai. Pemupukan ¾ NPK + Tithoganic 2 t ha-1 nyata meningkatkan hara P dan K potensial, Mg-dd, K-dd, serapan N, P dan K dan menurunkan Al-dd setelah panen, serta meningkatkan bobot biji kering kedelai sebesar 43% dibanding kontrol dan 24% dibandingkan ¾ NPK. Aplikasi pembenah tanah dan pemupukan pada kedelai meningkatkan aktivitas dehidrogenase tanah berkisar 10,39 ? 84,40 µg TPF g tanah-1 hari-1. Perlakuan pemupukan dengan dosis tinggi, memberikan aktivitas dehidrogenase lebih rendah dibandingkan dengan tanpa pupuk .  Peningkatan produktivitas kedelai pada Typic Kanhapludults, Lampung Timur memerlukan aplikasi kapur pertanian 1,23 t ha-1, Tithoganic 2 t ha-1 dan pupuk NPK (50 kg ha-1 Urea, 150 kg ha-1 SP-36 dan 100 kg ha-1 KCl).Abstract. The objectives of this study were to determine the effects of some soil ameliorant and NPK fertilizer on soil properties and soybean productivity. The experimental design was Split Plot, with three replications. As the main plots were A1: Lime 1.23 t ha-1, A2: Lime 200 kg ha-1, A3: Active lime 200 kg ha-1, A4: Biochar 2.5 ton ha-1 and A5: Humate compound 20 l ha-1. The subplots were B1: Control, B2: NPK; B3: ¾ NPK, and B4: ¾ NPK + Tithoganic 2.5 ton ha-1. The results showed that active lime dosage of 200 kg ha-1 is not effective to increase the soil pH and dry weight of soybeans. Lime dose of 1.23 t ha-1 (Al saturation 20%) significantly increased the pH, exchangeable Ca, base saturation, decreased exchangeable Al after harvest and increased the weight of dry grain of soybean from 0.5 to 0.9 t ha-1. Biochar significantly increased K-potential, exchangeable Mg and K, but did not significantly increase the dry weight of soybean. Humic compounds had no significant effect on soil chemical properties and dry weight of soybeans. Fertilization NPK + ¾ Tithoganic 2 t ha-1 significantly increased the potential of P and K, exchangeable Mg, exchangeable K, N, P and K uptake and lowered exchangeable Al after the soybean harvest and increased the dry weight of soybean as high as 43% compared to controls and 24% compared to ¾ NPK. Soil ameliorant and fertilization application on soybean increased the activity of dehydrogenase soil from 10.390 to 84.400 g TPF g soil-1 day-1 . Higher rate of fertilization treatment decreased dehydrogenase activity compared to the without fertilizer. Improvement of soybean productivity on Typic Kanhapludults at the Lampung Timur site needed applications of lime of 1.23 t ha-1, Tithoganic of 2 t ha-1 and NPK fertilizer (50 kg ha-1 Urea, 150 kg ha-1 SP-36 dan 100 kg ha-1 KCl). 
THE INFLUENCE OF VOLCANIC MATERIALS ON THE PROPERTIES OF PADDY SOILS PRASETYO, BAMBANG HENDRO; SUGANDA, HUSEIN; KASNO, ANTONIUS
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 25 (2007): Juli 2007
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n25.2007.%p

Abstract

Three pedons of paddy soils classified as Oxyaquic Eutrudepts from Pati, Typic Endoaquerts from Ngawi and Vertic Endoaquepts from Klaten have been studied pedogenetically based on their physical, mineralogical and chemical properties. For this purpose as many as 15 soil samples were analyzed in Laboratory. The results indicated that all pedons were influenced by different materials. The top soil of paddy soil from Pati wascovered by sediment material which was dominated by quartz, while sub soils was influenced by volcanic materials consist of association labradorite-hornblende minerals. Paddy soil from Ngawi continuously influenced by volcanic materials in all profile with association of labradorite-hornblende, while paddy soil from Klaten which was derived from volcanic alluvium showed domination of primary mineral in their association, e.g labradoritehornblende- augite-hypersten. The clay mineral composition in all paddy soils were dominated by smectite, with a lesser extends kaolinite and halloysite. The higher content of kaolinite in the top layer of paddy soil from Pati was formed from sediment materials, while in all sub soils kaolinite and haloisite were formed from weathering of labradorite from volcanic materials. Chemically, all pedons are fertile, the main difference is on the ratio of Ca/Mg. Paddy soils from marl (Pati and Ngawi) have Ca/Mg ratio ranging between 5:1 and 12:1, while paddy soil from alluvium (Klaten) is about 2:1. The influence of volcanic materials gives a positive impact on paddy field properties, especially in the source of nutrients but could not modify the Ca/Mg ratio.
EFFECTS OF BIO-NANO OSA APPLICATION ON FERTILIZER USE AND WATER CONSUMPTION EFFICIENCIES OF BLACK SOYBEAN GROWN ON RICE-FIELD Santi, Laksmita Prima; Goenadi, Didiek Hadjar; Barus, Junita; Dariah, Ai; Kalbuadi, Donny Nugroho
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 43, No 2 (2019)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v43n2.2019.109-116

Abstract

Abstarct. Rice-field, during the dry season, offers promising potential as food crop production area particularly for secondary crops such as black soybean. However, rice-field have some limitations to support crop productivity economically, due to low fertilizer efficiency and/or water usage. Silicate (Si) fertilizer in the form of bio-nano ortho silicic acid (OSA) has been proven to improve yield and water use efficiency of black soybean on the upland, but not on rice field. This study aimed to determine the effects of bio-nano OSA application on yield, fertilizer and water use efficiencies of Detam-1 black soybean grown at a Bantarwaru rice-field, Indramayu, West Java. Experiment was undertaken from August to November 2018 with treatments consisting of : (i) control (P0), (ii) farmers? standard practice (P1), (iii) P1 + 2 ton organic fertilizer ha-1 (P2), (iv) 50% P1 + 4 L bio-nano OSA ha-1 (P3), (v) 75% P1 + 4 L bio-nano OSA ha-1 (P4), and (vi) P1 + 4 L bio-nano OSA ha-1 (P5), in a randomized block design with three replications. The soil belongs to Alfisols with vertic property, i.e. cracking during the dry season. The results show that the application of bio-nano OSA was capable of improving yield of Detam-1 black soybean up to 26%, increasing water use efficiency up to 37%, and reducing NPK fertilizer dosages up to 50%. The highest yields of Detam-1 black soybean was 2.4-2.5-ton bean ha-1, achieved from the treatment of combination of 50-75% NPK fertilizer dosages and application of bio-nano OSA at 4 L ha-1 rate with optimum level of NPK dosage at 39.2%. By using bio-nano OSA and optimum dosage of NPK fertilizer, the farmer?s profit increased IDR 4,152,340 ha-1 per season compared to standard practice.Abstrak. Sawah tadah hujan pada musim kemarau menawarkan peluang yang prospektif untuk dimanfaatkan sebagai areal produksi tanaman pangan khususnya palawija seperti kedelai hitam. Namun, sawah tadah hujan secara umum memiliki masalah khusus untuk mendukung produktivitas tanaman di musim kemarau yaitu rendahnya efisiensi serapan hara dan/atau penggunaan air. Teknologi pupuk silika dalam formulasi bio-nano ortho-silicic acid (OSA) telah terbukti mampu meningkatkan hasil kedelai hitam dan efisiensi penggunaan air pada lahan tegalan tetapi tidak pada lahan sawah tadah hujan. Penelitian ini ditujukan untuk mempelajari pengaruh aplikasi pupuk Si (bio-nano OSA) terhadap produksi tanaman kedelai hitam Detam-1, efisiensi penggunaan pupuk, dan air pada sawah tadah hujan di Bantarwaru, Indramayu, Jawa Barat. Percobaan dilaksanakan di lahan petani pada bulan Agustus hingga Nopember 2018 dengan menguji perlakuan : (i) kontrol (P0), (ii) pemupukan standar petani (P1), (iii) P1 + 2 ton pupuk organik ha-1 (P2), (iv) 50% P1 + 4 L bio-nano OSA ha-1 (P3), (v) 75% P1 + 4 L bio-nano OSA ha-1 (P4), dan (vi) 100% P1 + 4 L bio-nano OSA ha-1 (P5), dalam rancangan acak kelompok dengan ulangan tiga kali. Tanah di lokasi percobaan tergolong ordo Alfisol dengan sifat vertik seperti timbulnya retakan saat musim kemarau. Hasil percobaan menunjukkan bahwa aplikasi bio-nano OSA mampu meningkatkan produksi kedelai hitam varietas Detam-1 hingga 26%, meningkatkan efisiensi penggunaan air hingga 37%, dan menghemat dosis pupuk NPK hingga 50%. Produktivitas kedelai hitam tertinggi sebesar 2,4?2,5 ton biji kering ha-1 diperoleh pada perlakuan kombinasi pupuk NPK 50-75% dari standar petani dan aplikasi bio-nano OSA 4 L ha-1 dengan dosis optimum pupuk NPK pada 39,2%. Tambahan keuntungan usaha tani kedelai hitam Detam-1 di Bantarwaru dengan aplikasi bio-nano OSA dan pemupukan NPK yang optimum dapat mencapai IDR. 4.152.340 ha-1 per musim jika dibandingkan perlakuan dosis pupuk standar.
THE ASSESSMENT OF SOIL PHOSPHATE AVAILABILITY USING SORPTION CURVE ON NEWLY OPEN LOWLAND AREAS KASNO, ANTONIUS; SULAEMAN, .; DWINININGSIH, SUTISNI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 18 (2000): Desember 2000
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n18.2000.%p

Abstract

Rice growth in the newly open lowland areas is restricted, especially nutrients availability. The purposes of the research as to study the sorption of soil P and soil P availability rice growth of the newly lowland. The field experimental is located at Dwijaya, Tugumulyo, Musi Rawas, South Sumatra province. Soil P-sorption was analysed in the laboratory for wet and dry soil samples, with two CaCI2 concentration (i.e.: 0.01 and 0.005 M). Soil fertility status of experimental site is very poor with N, P, K, Ca, Mg and organic matter as limiting factors for crop growth. Maximum rice yield in the site was achieved by P fertilizer application of 767 kg of SP-36, and correspond to available soil P (Bray 1) content of 5 ppm P. The phosphorus standard requirements in 0.01 and 0.005 M CaCI2 extracting solution are found to be 0.0051 and 0.0018 ppm P for wet soil sample and 0.009 and 0.003 ppm P for dry soil sample respectively.
ANDISOLS DERIVED FROM ACID PYROCLASTIC LIPARITE TUFF : THEIR PROPERTIES AND THEIR MANAGEMENT STRATEGY FOR AGRICULTURAL DEVELOPMENT YATNO, EDI; SUHARTA, NATA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The characterizations of Andisols from acid pyroclastic liparite tuff have been studied. Six soil profiles were made in the field, and 29 soil samples were taken for chemical, mineralogical and physical analyses in laboratory. Results indicate that sand mineral composition of Andisols was dominated by biotite, quartz, and sanidine, while the clay mineral was dominated by allophane. Soil bulk density is low (0.47-1.00 g cm-3), while total porosity is high (53-80%). Soil reaction is slightly acid (pH 5.5-6.0) to very acid (pH< 4.5), poor of nutrients, have a high to very high of P retention (>80%), high (>3%) to very high organic carbon (>5%) and high potential K (>41 mg 100g-1). The high value of organic carbon positively has relationship with N and soil cation exchange capacity, while the P retentionpositively has relationship with amorphous material in the form of Alo+0.5 Feo. Andisols investigated were classified as Medial, amorphic, isothermic, Acrudoxic Hapludands (UG 444 and MD 121 ), Medial, amorphic, shallow, isothermic, Duric Hapludands (KR 227), and Medial, amorphic, shallow, isothermic, Acrudoxic Hapludands (KR 190, AI 1045 and KR 1188). The characterization of Andisols is very useful in the soil management planning on Andisols land. Planting some vegetation that tolerant with soil acidity and soil conservation to protect organic matter from erosion hazard should be become priority. Maintain land cover of Andisols is a good way to protect Andisols from erosion process.
PETA KALENDER TANAM PADI LAHAN RAWA LEBAK DI KALIMANTAN SELATAN Wakhid, Nur; Syahbuddin, Haris; Khairullah, Izhar; Indrayati, Linda; Cahyana, Destika; Mawardi, Mawardi; Noor, Muhammad; Anwar, Khairil; Alwi, Muhammah; Hairani, Anna
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 39, No 1 (2015)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v39n1.2015.41-50

Abstract

Abstrak. Perubahan iklim global telah menggeser awal dan akhir musim tanam yang berdampak negatif pada pola tanam dan produksi tanaman pangan di lahan rawa lebak Kalimantan Selatan. Penelitian ini bertujuan menyusun peta kalender tanam lahan rawa lebak pada tiga kejadian iklim, yaitu tahun kering, tahun normal, dan tahun basah. Pembuatan kalender tanam dilakukan dari Bulan Desember 2011 sampai bulan Desember 2012 menggunakan kombinasi analisis hubungan antara curah hujan dan genangan di lahan rawa lebak. Setelah diketahui prediksi curah hujan dan tinggi genangan di lahan lebak, selanjutnya dilakukan delineasi peta kalender tanam yang dikombinasikan dengan peta administrasi, peta agroklimat, peta lahan rawa lebak, dan peta sawah di lahan rawa lebak. Hasil penelitian menunjukkan bahwa dengan penggunaan kalender tanam ini, waktu tanam di lahan rawa lebak berpotensi ditingkatkan dari 1 kali menjadi 2 kali setahun. Kalender tanam ini sudah diverifikasi dengan data primer hasil survey dan wawancara petani. Hasil verifikasi menunjukkan bahwa musim tanam aktual dengan yang diprediksi dengan kalender tanam mempunyai pola waktu musim tanam yang mirip. Dengan demikian kalender tanam ini dapat dijadikan panduan dalam menentukan potensi waktu tanam padi lahan rawa lebak di Kalimantan Selatan. Abstract. The global climate change changes the onset and the end of planting seasons, which in turn influences the cropping pattern of freshwater swampland in South Kalimantan. This study was aimed at developing a cropping calendar map of fresh water swampland in three conditions of climate years, i.e. dry, normal, and wet years. The cropping calendar was developed from December, 2011 to December, 2012 by analyzing the relationship of the amount of rainfall and inundation data. Based on the rainfall and inundation data, the area was delineated by the cropping calendar combined overlayed with the administration map, agroclimatic map, fresh swampland map, and rice field map. This research showed that, by using this cropping calendar map, the planting time of the fresh water swampland can potentially be increased from once to twice per year. The cropping calendar map was verificated by using primary data from field survey and farmer questionare. This verification showed that the actual and predicted planting time have a similar pattern of planting time. We are confident that this cropping calendar map can be used as a guide for determining the potential planting time in fresh water swampland of South Kalimantan.

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