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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.40(1) JULY 2016 Iklim, Jurnal Tanah dan
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 40, No 1 (2016)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v40n1.2016.%p

Abstract

The Journal's Cover
THE USE OF MINERAL AND ORGANIC SOIL CONDITIONER TO IMPROVE SOIL QUALITY OF TYPIC KANHAPLUDULTS TAMANBOGO, LAMPUNG DARIAH, AI; SUTONO, .; NURIDA, NENENG LAILA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 31 (2010): Juli 2010
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n31.2010.%p

Abstract

As soil conditioner, there are many functions of organic matter that would not be replaced by mineral material. Therefore, mineral soil conditioner is better focused on increasing quality of organic soil conditioner. The objective of the research was to obtain the effectiveness of soil conditioner formula (organic matter and zeolit) and its application technique (dose and phase application) in improving soil quality. The research was conducted at KP Tamanbogo, Lampung for three seasons (2006/2007). The experiment employed a split plot design with three reflications. Application techniques of soil conditioner (dose and phase aplication) as main plots and three types formula of soil conditioner as sub plots. Corn was used as test crop. Parameters observed were plant growth and production, and changes in soil properties. The results showed that soil conditioner that applied on Typic kanhapludults could significantly increased corn growth and yield. Soil conditioner with higher organic matter proportion has better effect on corn growth and yield as well as on physical soil properties, which indicated by soil permeability and aggregate stability. The addition of 20% of zeolit in soil conditioner formula increased soil microorganism activities, but the additional up to 30% decrease microorganism activities. The changes of organic matter and zeolit proportion in soil conditioner has significantly effect on soil pH and N content, but has no significantly effect on P, K content, and CEC. Compared to innitial soil condition, application of soil conditioner could increase CEC from <4 cmolc kg-1 to 5.85 cmolc kg-1 respectively. Soil conditioner was better to be applied periodically but must be done every season. For degraded soil such as at KP. Tamanbogo, soil conditioner was applied with 10 t ha-1 dose for innitial rehabilitation process, hereinafter with 5 t ha-1 annual crop season dose.
ANALISIS VARIASI GEOGRAFIS POLA HUJAN DI WILAYAH PAPUA Rouw, Aser; Hadi, Tri Wahyu; H.K., Bayong Tjasyono; Hadi, Safwan
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 38, No 1 (2014)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v38n1.2014.25-34

Abstract

Abstrak. Studi ini menekankan pada sejauh mana aspek variasi geografis pola hujan di wilayah Papua berdasarkan terminologi pola hujan monsunal (A), ekuatorial (B), dan lokal (C) yang telah dikaji secara saintifik dan digunakan dalam operasional prakiraan musim di Indonesia. Analisis dilakukan pada data rata-rata curah hujan bulanan dari 362 stasiun penakar hujan di seluruh wilayah Papua mulai dari tahun 1901-2010 dengan panjang pengamatan 5-100 tahun menggunakan analisis PCA, cluster dan analisis spasial. Ditemukan 21 cluster variasi pola hujan di wilayah Papua, yaitu: (i) pola monsunal A dengan variasi pola, A1, A2, A3, A4, A5, dan A6, (ii) pola hujan ekuatorial B dengan variasi B1, B2, B3, B4, B5, B6, B7, B8, B9, dan B10, serta (iii) pola hujan lokal C dengan variasi C1 dan C2. Secara geografis pola hujan tersebut bervariasi menurut tiga area geografis utama, yaitu 7 cluster pola hujan: A2, A3, A4, A5 B6, B7, dan B8 di dataran rendah utara; 5 cluster pola hujan: A1, B3, B4, B5, dan B9 di deretan pegunungan tengah; dan 9 cluster pola hujan: A, A6, B, B1, B2, B10, C, C1, dan C2 di dataran rendah selatan Papua. Temuan pola hujan berimplikasi pada dua hal pokok dari sektor pertanian di wilayah Papua, yaitu pewilayahan komoditas pertanian, dan strategi budidya pertanian dengan mempertimbangkan keadaan klimatologis pola hujan serta variabilitas temporalnya. Abstract. This study emphasizes on the variation aspects of the geographical rainfall patterns in the Papua region based on the terminology of the A, B, and C rainfall patterns in Indonesian archipelago that have been scientifically assessed and used in seasonal forecasting in Indonesian. Analyses were performed on an average monthly rainfall of 362 rain gauges with the distributed observation length of 5 to 100 years (from 1901 to 2010) using PCA, cluster, and spatial analyses. It was found that there were 21 clusters of rainfall patterns in the Papua region Variation patterns of the monsoon A rainfall: A1, A2, A3, A4, A5, and A6; the equatorial rainfall pattern B: B1, B2, B3, B4, B5, B6, B7, B8, B9, and B10, and the local rainfall patterns C: C1 and C2. Geographically, the rainfall patterns vary according to three main areas, namely seven clusters in the northern lowlands: A2, A3, A4, A5 B6, B7, and B8; 5 clusters in the central mountain range: A1, B3, B4, B5, and B9; and 9 clusters in the southern lowlands: A, A6, B, B1, B2, B10, C, C1, and C2. The findings of the rainfall patterns have implications for two major issues of the agricultural sector, viz.,, zoning of agricultural commodities, and planting strategy by considering the state of climatological rainfall patterns and its temporal variabilities.
RAINFALL PREDICTION MODELING USING NEURAL NETWORK ANALYSIS TECHNICS AT PADDY PRODUCTION CENTRE AREA IN WEST JAVA AND BANTEN PRAMUDIA, ARIS; KOESMARYONO, Y; LAS, IRSAL; JUNE, T; ASTIKA, I WAYAN; RUNTUNUWU, ELEONORA
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 27 (2008): Juli 2008
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n27.2008.%p

Abstract

Rainfall fluctuates with time and changes randomly, which unfavorable for most of the cropping, such as paddy. An early warning system is required to ensure a productive paddy cropping system. This paper describes the rainfall prediction modelling using a neural network analysis at paddy production centre area in the northern coast of Western Java and Banten. Rainfall data from Baros in the northern coast of Banten, Karawang, and Kasomalang Subang in the northern coast of West Java have been used for setting and validating the model. The model provides rainfall prediction for the next three months (Y=CHt+3), using the inputs data of the number of month (X1=t), the rainfall at the current month (X2=CHt), the rainfall atthe following month (X3=CHt+1), the rainfall at the following two months (X4=CHt+2), the southern ossilation index (SOI) at the current month (X5=SOIt) and the NINO-3,4 sea surface temperature anomaly at the current month (X6=AnoSSTt). Rainfall data recorded in the 1990-2002 period have been used for composing the model, and those in the 2003-2006 periods have been used for validating the model. The validated model has been used to predict rainfall in the 2007-2008. The best modelare those that using a combination of those six input variables. These models are able to explain 88-91% of the data variability with 4-8 mm month-1 of the maximum prediction error. At Baros Serang, the predicted rainfall in the 2007-2008 periods will be varied from Normal to Above Normal. At Karawang and Kasomalang Subang, predicted rainfall will be high at the end of 2007 until early 2008, and then will be low in the middle of 2008 and increases at the end of 2008.
PENGARUH PENAMBAHAN ALGINAT HASIL RADIASI GAMMA PADA BAHAN PEMBAWA TEPUNG BERAS DAN TAPIOKA TERHADAP VIABILITAS HARZIANUM Nurrobifahmi, Nurrobifahmi; Sugoro, Irawan; Puspitasari, Tita
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 42, No 1 (2018)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v42n1.2018.37-42

Abstract

Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan alginat hasil radiasi gamma pada bahan pembawa tepung beras dan tapioka terhadap viabilitas T. harzianum. Perlakuan terdiri atas bahan pembawa T. harzianum berupa tepung beras dan tapioka yang ditambah alginat hasil sterilisasi radiasi gamma (25, 50, dan 75 kGy) dan autoklaf (sebagai pembanding) serta kontrol berupa alginat tidak disterilisasi. Inkubasi dilakukan selama 28 hari pada suhu ruang. Parameter yang dianalisis adalah pH dan viskositas pada sampel alginat hasil radiaisi dan autoklaf, sedangkan pada perlakuan dianalisis kadar N-Total, P-total, C-organik, serta viabilitas spora T. harzianum. Hasil penelitian menunjukkan bahwa radiasi gamma mempengaruhi nilai pH dan viskositas alginat. Nilai pH dan viskositas mengalami penurunan yang sebanding dengan peningkatan dosis radiasi. Penambahan alginat yang diradiasi pada bahan pembawa tidak mempengaruhi kadar N-total, P-total, sebaliknya penambahan alginat yang diradiasi hanya berpengaruh pada C-organik. Spora T. harzianum yang disimpan di dalam media tepung beras dan tapioka yang dicampurkan dengan alginat yang diradiasi 25 kGy and 50 kGy memiliki viabilitas yang lebih baik dibandingkan dengan perlakuan autoklaf. Berdasarkan hasil yang diperoleh, penambahan alginat yang diradiasi pada bahan pembawa tepung beras dan tapioka berpotensi untuk menyimpan spora T. harzianum.Abstract. The aim of this study was to determine the effect of gamma radiation alginate addition in rice and tapioca flour carrier materials on the viability of T. harzianum. The treatment consisted of T. harzianum carrier materials in the form of rice and tapioca flour which was added with alginate resulted from gamma radiation sterilization (25, 50, and 75 kGy) and autoclave (as comparison) and control alginate with no sterilization. Incubation was carried out for 28 days at room temperature. The parameters analyzed were pH and viscosity on the alginate samples resulted by radiation and autoclave, while for the treatments the total contents of N, P, and C-organic, as well as T. harzianum spore viability were analyzed. The results showed that gamma radiation affected the pH and viscosity of alginate. The pH and viscosity decreased with the increase of radiation intensity. The addition of radiated alginate to the carrier materials did not affect the total contents of N and P, but affected only C-organic content. T. harzianum spores stored in rice and tapioca flour media mixed with alginate which radiated in 25 kGy and 50 kGy had a better viability compared to the autoclaved ones. Based on the results obtained, the addition of radiation alginates to rice and tapioca flour materials has a good potential for T. harzianum storage.
CHARACTERISTICS OF VOLCANIC ASH SOILS FROM SOUTHERN PART OF MT. TANGKUBAN PERAHU, WEST JAVA YATNO, EDI; ZAUYAH, S.
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 23 (2005): Desember 2005
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n23.2005.%p

Abstract

Three soil pedons developed on young andesitic volcanic ash with high mineral deposit and high P retention, granular soil structure, high porosity, and low bulk density, were differentiated based on their morphological, physical, chemical and mineralogical characteristics. Pedons 1 and 3 are discontinue or bisequm pedons characterized by the presence of more contrast colour and new buried materials on layer 4, while pedon 2 isrelatively younger than pedons 1 and 3. Mineralogical composition of pedons 1 and 3 is very different compared with pedon 2. Pedons 1 and 3 have high total porosity resulting in easy to the soil leaching. Pedon 2 with higher bulk density tends to be more compact although its soil texture is light, indicating soil character of Andisols from this young volcanic material. High P retention and low base saturation may bring about high Pfertilizer need. Pedons 1 and 3 have lower feldspar content as K sources compared with pedon 2, while the content of opaque minerals is higher in pedons 1 and 3 indicating more developed pedons. The top layer of pedon 1 has lower opaque minerals but higher hornblende than pedon 3 due to different land use. The presence of alophane minerals in pedon 1 and 3 can be detected from the results of Selective Dissolution Analysis, but they do not detected on X-ray diffraction patterns. In pedon 2, however, alophane minerals show convex diffraction patterns. Based oncharacteristics of their soil physics, chemistry, and mineralogy, pedons 1 and 3 were classified as Thaptic Hapludands, and pedon 2 as Typic Melanudands. The increase of P availability on the three pedons can be done by P fertilization and liming to accelerate substitution of Al-P to Ca-P and increase of soil pH.
Karakteristasi Bakteri Asal Lahan Gambut Jambi dan Potensinya Sebagai Pupuk Hayati Pratiwi, Etty; Satwika, Taruna D.; Akhdiya, Alina; Agus, Fahmuddin
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 44, No 1 (2020)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v44n1.2020.1-10

Abstract

Abstak. Penggunaan pupuk hayati di Indonesia menunjukkan tren yang semakin meningkat.  Pupuk hayati mulai banyak diaplikasikan di lahan optimal maupun di lahan suboptimal, termasuk lahan rawa dan lahan gambut. Tanah gambut memiliki banyak kendala, diantaranya adalah pH yang sangat rendah, dan kandungan serta ketersediaan unsur hara yang sangat rendah. Selain itu lahan gambut pada musim penghujan akan terjadi penggenangan air, sedangkan pada musim kemarau akan terjadi kekeringan. Untuk mendapatkan mikroba yang mampu bertahan di lingkungan ekstrim seperti ini kami isolasi mikroba indigenous dari lahan gambut di Tanjung Jabung Timur, Jambi. Daya adaptasi dan daya kompetisi mikroba di lapangan, merupakan dasar pemilihan mikroba sebagai pupuk hayati. Hasil pengujian karakterisasi dan fungsional isolat-isolat bakteri asal tanah gambut perkebunan kelapa sawit menunjukkan isolat Bacillus cereus 1, Bacillus soli 2, Mycobacterium cubense 8, Rhodococcus equi 15, Bacillus pumilus 21 dan Nocardia jiangxiensis 24 memiliki potensi sebagai pupuk hayati pemacu tumbuh tanaman. Bakteri-bakteri ini tidak bersifat patogen terhadap tanaman dan hewan mamalia, mampu memproduksi fitohormon IAA, mampu melarutkan P dan memfiksasi nitrogen. Abstrac. The use of biofertilizers in Indonesia shows an increasing trend. Biofertilizer is widely applied in optimal or suboptimal land, including swamp lands and peatlands. Peat soils has many problems, including very low pH, and very low concentration and availability of nutrients. In addition, peatlands are prone to seasonal waterlogging and drought. To be able to utilize microbes that survive the extreme environments, we isolated indigenous microbes from peatland in Tanjung Jabung Timur, Jambi. The adaptability and survival of the microbes in the field conditions are the basis for choosing microbes as biofertilizer. Results of the characterization and functional isolates of bacteria from peat soils under oil palm plantations at the site show that isolates of Bacillus cereus 1, Bacillus soli 2, Mycobacterium cubense 8, Rhodococcus equi 15, Bacillus pumilus 21 and Nocardia jiangxiensis 24 had the potential as biofertilizers. These bacteria were not pathogenic to plants and mammals, could produce IAA phytohormones, and were able to solubilize P and fix nitrogen.
SOIL PROPERTIES UNDER ORGANIC VERSUS CONVENTIONAL VEGETABLE FARMING SYSTEMS IN BOGOR DISTRICT Sukristiyonubowo, Sukristiyonubowo; P, Benito H; Husen, Edi
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.v39n1.2015.19-24

Abstract

Abstract. In term of quality, the yield of rice and vegetables of organic farming is better than conventional system. We are interested to study and to compare soil characteristics both in vegetable organic and conventional systems. The experiment was conducted in vegetable organic and conventional farming system in Bogor District from July 2012 to March 2013. Soil composites were sampled both at the sites of organic and conventional vegetable farming systems, before land preparation. Soil samples were grouped into lower, middle and upper slopes. Each soil composite group was collected from ten sampling points and mixed. These samples were analysed for chemical, physical and biological properties. The results indicated that in general the soil characteristics of organic vegetable farming were better than conventional farming systems in term of pH, C organic, total N, P and K extracted with HCl 25%. The soil pH in organic farming was 5.70 ± 0.50 and in conventional farming system was 4.79 ± 0.14. The organic C in organic system was 3.07 ± 0.28% and in conventional system was 2.19 ± 0.35%. Total N at organic system was 0.37 ± 0.03% N and in conventional faming system was 0.21 ± 0.05% N. Similarly, physical analysis was observed both in organic and conventional systems. The bulk density in organic farming was 0.70 ± 0.05 g cm-3 and in conventional systems was 0.75 ± 0.03 g cm-3. Microbial C content in soil of organic vegetable farming and conventional farming systems statistically were not significantly different. Dehidrogenase enzyme activities were significantly different. The highest activity of dehidrogenase enzyme was in vegetable organic farming. Soil nematode population in vegetable organic and conventional farming did not show significant difference. It is suggested that soil quality in vegetable organic farming is better than in conventional system. Abstrak. Kualitas hasil padi dan sayuran pada budidaya organik lebih baik ataupun unggul dibandingkan dengan sistem pertanian konvensional. Untuk itu, perlu dipelajari dan diungkap kualitas tanah pada sistem budidaya organik dan konvensional. Percobaan dilaksanakan pada pertanian organik dan konvensional di Kabupaten Bogor dari bulan Juli 2012 sampai dengan Maret 2013. Contoh tanah diambil pada Juli 2012 pada kedua sistem budidaya tersebut. Contoh tanah komposit masing masing dikumpulkan pada lereng atas, tengah dan bawah, dan setiap lerang diambil 10 titik, lalu dicampur dan diambil kurang lebih satu kg contoh komposit untuk setiap lereng. Contoh tanah ini kemudian dibawa ke laboraorium Balai Penelitian Tanah, Bogor untuk dianalisa sifat kimia, fisika dan biologi tanahnya. Hasil pengukuran menunjukkan bahwa secara umum karakteristik tanah pada sistem budidaya organik lebih baik dibandingkan dengan sistem konvensional meliputi pH tanah, C-organik, total P dan K yang diekstrak dengan HCL 25%. Kemasaman atau pH tanah pada budidaya sayur organik adalah 5,70 ± 0,50 dan pada budidaya konvensional 4,79 ± 0,14 C-organik pada budidaya organik 3,07 ± 0,28% dan pada budidaya konvensional 2,19 ± 0,35%. Nitrogen total pada budidaya sayur organik adalah 0,37 ± 0,03% N dan pada sistim konvensional adalah 0,21 ± 0,05% N. Hal yang sama juga terjadi pada pengamatan fisik tanahnya, dimana sistem budidaya organik lebih baik jika dibandingkan sistem budidaya konvensional. Berat Jenis tanah pada budidaya organik 0,70 ± 0,05 g cm-3 dan pada budidaya konvensional 0,75 ± 0,03 g cm-3. Untuk aktivitas mikroba C pada budidaya organik secara statistik tidak berbeda nyata dengan sistem budidaya konvensional. Sementara untuk ensim dehidrogenase menunjukkan perbedaan yang nyata. Enzim dehidrogenase tertinggi terlihat pada sistem budidaya organik, sedangkan untuk populasi nematoda pada budidaya oragnik tidak menunjukkan beda yang nyata dengan sistem budidaya sayur konvensional. Populasi nematoda tertinggi didapat pada budidaya organik di Mega Mendung. Dapat dikatakan bahwa sistem budidaya organik cenderung lebih baik dibandingkan sistem budidaya konvensional.
PENGARUH PUPUK KANDANG DAN PUPUK BUATAN TERHADAP FLUKS CO2 PADA LAHAN GAMBUT YANG DIDRAINASE Maswar, Maswar; Husnain, Husnain; Agus, Fahmuddin
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.v38n2.2014.71-77

Abstract

Abstrak. Drainase dan pemupukan pada lahan gambut dapat menstimulasi dekomposisi gambut, sehingga menyebabkan kehilangan karbon terutama dalam bentuk emisi CO2 ke atmosfer. Dua seri percobaan telah dilaksanakan, yang bertujuan untuk melihat pengaruh kotoran hewan sapi (kohe) dan pupuk buatan terhadap fluks CO2 pada lahan gambut yang didrainase. Penelitian dilaksanakan di Desa Lubuk Ogong, Kecamatan Bandar Seikijang, Kabupaten Pelalawan, Propinsi Riau, dari bulan Oktober 2011 sampai dengan Januari 2012. Percobaan pertama yaitu membandingkan tiga perlakuan terdiri atas: 1) kontrol (tanpa perlakuan); 2) aplikasi 10 t ha-1kohe dan 3) kombinasi 10 t ha-1kohe dengan pupuk buatan (urea = 0,1 kg m-2; SP-36 = 0,11 kg m-2; dan KCl = 0,09 kg m-2). Masing-masing perlakuan diulang tujuh kali dengan rancangan acak kelompok. Percobaan kedua merupakan plot berpasangan yang membandingkan antara perlakuan aplikasi pupuk kandang (kotoran sapi) dosis 10 t ha-1 dengan tanpa pupuk pada lahan gambut yang didrainase. Emisi CO2 dari permukaan tanah ditangkap dengan sungkup tertutup dan konsentrasinya diukur dengan Infrared Gas Analyzer (IRGA). Hasil penelitian menunjukkan bahwa aplikasi pupuk kandang nyata meningkatkan fluks CO2, namun kombinasinya dengan pupuk buatan tidak nyata meningkatan fluks CO2 bila dibandingkan dengan perlakuan kontrol. Setelah dua bulan setelah aplikasi pupuk kandang, nilai rata-rata fluks CO2 10% lebih tinggi dibandingkan plot tanpa pemberian pupuk kandang. Keragaman data hasil pengukuran fluks CO2 di lahan gambut sangat tinggi, baik secara temporal, maupun lintas perlakuan. Abstract. Drainage and fertilization on peat soils stimulate the decomposition process of peat material, thus substantially increase carbon losses from the soil, especially in the form of CO2. We conducted two series of experiments to study the effect of manure application on CO2 flux in drained peatlands in Lubuk Ogong Village, Bandar Seikijang Sub-District, Pelalawan District, Riau Province from October 2011 to January 2012. The first trial using randomized complete block design consisted of three treatments including: 1) control (no treatment); 2) Application of 10 t ha-1 cow barnyard manure; and 3) combination of 10 t ha-1 manure and chemical fertilizer (urea = 0.1 kg m-2; SP-36 = 0.11 kg m-2; and KCl = 0.09 kg m-2) with three replications. The other trial carried out in pair plots comparing with and without application of 10 t ha-1 manure. CO2 emitted through peat soil surface was captured using closed chambers and its concentration was measured using an Infrared Gas Analyzer (IRGA). The results showed that application of manure significantly increased the flux of CO2, while combination of manure and chemical fertilizer did not increased CO2 flux compared with control. During the two month period after manure applied, CO2 flux average in manure plot was 10% higher than that without manure. Moreover, we found large temporal and treatment-related variations of CO2 flux in peatlands.
REHABILITATION OF SOILS POLLUTED BY MERCURY (HG) DUE TO GOLD MINING USING LEACHING AND ORGANIC MATTER IN GREEN HOUSE HARYONO, .; SOEMONO, S
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 29 (2009): Juli 2009
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n29.2009.%p

Abstract

The industrial waste, especially that without waste water management instalations caused soil resources degradation. The waste type that has potential to degrade the soil is toxic material, including the heavy metals. Mercury (Hg) is one of the toxic and dangerous heavy metal, which threaten crop, animal, and human health. All types of mercury compound are toxic for human. The mercury is one of the most toxic metal ion to soil biota. Generally, mercury availablility in soil for crop is low, and it tends to accunulate in rootzone. This indicated that the rootzone is a barrier to mercury uptake. The organic material can be used to adsorp the heavy metals. The material have functional array that is active to adsorp the heavy metal if it is ionized. The research was conducted in Soil Research Institute green house using factorial randomized block 3 x 4, with three replications. The first factor is Leaching (without leaching, leached with 1-2 litre pot-1 each three days). The second factor is organic matter (control;cow manure 1,181.47 g pot-1; chicken manure 741.62 g pot-1; straw compost 1,102.29 g pot-1). The research showed that the heavy metal polutions did not affect the rice (IR-64) growth and yield. Organic matter and leaching affect the mercury contents in produced rice. The Hg content from analysis of percolated water is not significantly different. The most effective treatment to lower the mercury content in rice to the level of ?Dirjen POM? (0.05 ppm or 50 ppb) is leaching with 1-2 litre water thatreached 14 ppb and 23 ppb; without leaching reached 25 ppb. Chicken manure with 1 litre water gained 34 ppb and 37 ppb. Organic matter addition with combination of leaching can decrease the Hg content to less the level.

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All Issue Vol 46, No 1 (2022): Akan Terbit Resmi pada Juli 2022 Vol 45, No 2 (2021) Vol 45, No 1 (2021) Vol 45, No 1 (2021): (Akan Terbit Resmi pada Bulan Juli) Vol 44, No 2 (2020) Vol 44, No 1 (2020) Vol 43, No 2 (2019) Vol 43, No 1 (2019) Vol 42, No 2 (2018) Vol 42, No 1 (2018) Vol 41, No 2 (2017) Vol 41, No 1 (2017) Vol 40, No 2 (2016) Vol 40, No 1 (2016) Vol 39, No 2 (2015) Vol 39, No 1 (2015) Vol 38, No 2 (2014) Vol 38, No 1 (2014) Vol 37, No 2 (2013) Vol 37, No 1 (2013) No 34 (2011): Desember 2011 No 33 (2011): Juli 2011 No 32 (2010): Desember 2010 No 31 (2010): Juli 2010 No 30 (2009): Desember 2009 No 29 (2009): Juli 2009 No 28 (2008): Desember 2008 No 27 (2008): Juli 2008 No 26 (2007): Desember 2007 No 25 (2007): Juli 2007 No 24 (2006): Desember 2006 No 23 (2005): Desember 2005 No 22 (2004): Desember 2004 No 21 (2003): Desember 2003 No 20 (2002): Desember 2002 No 19 (2001): Desember 2001 No 18 (2000): Desember 2000 More Issue