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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
 19   20   21   22   23 
Soil Quality of the Land under Coffee-Based Farming System (Case Study at Sumberjaya, West Lampung) AI DARIAH; F. AGUS; . MASWAR
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

Forest conversion to coffee-based farming systems has raised concern among many stakeholders since it may create serious impact to the deterioration of forest functions, declining soil productivity in particular and land degradation in general. Study on the impact of forest conversion on changes of soil quality, and the role of coffee for soil quality recovery has been conducted at Bodong and Laksana Sub Village of Sumberjaya Village, West Lampung. In Laksana, the observed landuse consisted of young (< 3 years) coffee plantation, mature (> 10 years) coffee, mix farming (multistrata), caliandra and forest, while in Bodong are young and mature coffee plantations and forest. The soil quality parameters used in this experiment were soil organic matter status and soil physical properties. Changes of soil quality as affected by forest conversion to coffee farming depends on soil resistance (resilience to structural break down). Soils with low resistance are easier to degrade than those with high soil resistance. The mix (multistarata) system shows better impact on soil quality than monoculture system does.
Peningkatan Kualitas Tanah dengan Pembenah Tanah Biochar Limbah Pertanian Neneng Laela Nurida; Ai Dariah; Achmad Rachman
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.v37n2.2013.69-78

Abstract

Abstrak. Optimalisasi penggunaan lahan kering yang telah terdegradasi perlu diawali dengan upaya rehabilitasi yang menggunakan pembenah tanah, antara lain biochar limbah pertanian. Penelitian ini bertujuan untuk mendapatkan formula kombinasi pembenah tanah biochar dengan kompos yang mampu memperbaiki kualitas tanah masam dan tanah non masam dan meningkatkan pertumbuhan tanaman. Penelitian dilaksanakan di rumah kaca Balai Penelitian Tanah pada Tahun 2008 dengan menggunakan tanah mineral masam (pH 4,1) dari Kebun Percobaan Tamanbogo, Lampung, dan tanah mineral non masam (pH 7,2) dari Pangandaran, Jawa Barat. Penelitian menggunakan rancangan acak lengkap (RAL) dengan tiga ulangan. Dua belas perlakuan yang diuji merupakan kombinasi biochar limbah pertanian (tempurung kelapa sawit, kulit buah kakao, dan sekam padi), masing-masing dengan komposisi sebanyak 25, 50, 75, dan 100% terhadap kompos. Takaran biochar pembenah tanah yang diuji adalah 5 t ha-1, dengan tanaman indikator jagung. Parameter yang diamati adalah sifat fisik dan kimia tanah serta tinggi tanaman. Hasil penelitian menunjukkan bahwa formula pembenah tanah biochar dapat memperbaiki sifat fisik tanah masam dan tanah non masam, baik dengan maupun tanpa dicampur dengan kompos. Pada tanah mineral masam, pemberian biochar dengan dan tanpa kompos, meningkatkan pH tanah secara nyata dari 4,1 menjadi 4,49-4,80 (masam), sedangkan pada tanah mineral non masam pemberian biochar dengan kompos menghasilkan pH dan kadar hara lebih tinggi. Pada tanah mineral non masam, kadar N tanah berkorelasi nyata dengan kadar asam fulvat (r = 0,389;P . 0,05), kadar K-tukar tanah berkorelasi nyata dengan kadar K (r = 0,462; P . 0,01) dan P-tersedia berkorelasi nyata dengan P formula (r = 0,444; P . 0,01). Respon pertumbuhan tanaman jagung sangat nyata terhadap formula pembenah tanah biochar (. 50%) pada tanah mineral non masam. Penggunaan formula biochar dengan kompos dengan proporsi biochar 25-50% (berat kering) disarankan untuk tanah non masam, sedangkan pada tanah masam dapat diaplikasikan formula biochar dengan atau tanpa kompos.
Phosphorous and Potassium Balances of Newly Developed Lowland Rice Field in Kleseleon Village, Malaka District, Nusa Tenggara Timur Sukristiyonubowo Sukristiyonubowo; Sugeng Widodo; Prima P. C.
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.v40n1.2016.35-42

Abstract

Abstract. Development of newly opened lowland rice fields in Indonesia can be both from up land with ustic to hemic moisture regimes and wetland with quick moisture regime. The study was conducted in Ustifluvent soil type of newly developed lowland rice field in Kleseleon village, Malaka District, Nusa Tenggara Timur Province in 2014. Five treatments were tested including T0: farmers practices, T1: NPK at recommendation rate + Rice straw compost, T2: NPK at recommendation rate + Smart + Rice straw compost, T3: ¾ NPK at recommendation rate + Smart + Rice straw compost and T4: NPK at recommendation rate + Smart + Rice straw compost, in which N, P and K application were split two times. The treatments were arranged in randomized complete block design with three replications. The phosphorous and potassium balances were constructed according to the different between nitrogen inputs and nutrient losses. The aims were (1) to evaluate phosphorous and potassium input – output of newly developed lowland rice field and (2) to validate the phosphorous and potassium recommendation according to the phosphorous and potassium balances. The results indicated that there were surplus P and K across the treatments meaning that the amount of SP-36 and KCl were more than enough to replace P and K removed by harvest product. The recommended P and K should be kept to at least 100 kg SP-36 and 100 kg KCl with added compost at least 3 tons ha-1 season-1.Abstrak. Pengembangan sawah bukaan baru di Indonesia dapat berasal dari lahan kering dengan kelembaban tanah ustik sampai hemic dan lahan basah dengan kelembaban tanah cepat. Penelitian dilakukan pada tanah ustifluvent dengan kelembaban ustik dari sawah bukaan baru di Dusun Kleseleon, Kabupaten Malaka, Nusa Tenggara Timur pada tahun 2014. Jenis. Lima teknologi diuji sebagai peralukan: T0: Praktek Petani, T1: NPK dengan dosis rekomendasi + Kompos Jerami Padi, T2: NPK denagn dosis rekomendasi + Smart + Kompos Jerami Padi, T3: ¾ NPK dengan dosis rekomendasi + Smart + Kompos Jerami Padi dan T4: NPK dengan dosis rekomendasi + Smart + Kompos Jerami Padi, dimana N, P and K diberikan dua kali. Perlakuan tersebut diatur dengan Rancangan Acak Kelompok yang diulang tiga kali Penelitian bertujuan (1) mengevaluasi unsur hara P dan K yang masuk dan yang keluar pada sawah bukaan baru, (2) memvalidasi rekomendasi pemupukan P dan K berdasarkan keseimbangan haranya. Hasil penelitian memperlihatkan bahwa terjadi surplus P dan K pada pemberian pupuk 100 kg SP-36 and 100 kg KCl ha-1 musim-1, berarti bahwa jumlah SP-36 dan KCl yang diberikan lebih dari cukup untuk menggantikan P dan K yang diangkut oleh hasil panen padi. Rekomendasi pemupukan P dan K sejogyanya dipertahankan paling tidak sebesar 100 kg SP-36 and 100 kg KCl ha-1 musim-1 dengan memberikan pupuk organik dari kompos jerami sebanyak 3 tons ha-1 musim-1.
Rehabilitation of Degraded Land using Paddy Straw Compost and Peat for Agriculture Purposes SANTUN R.P SITORUS; H SOEWANDITA
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

The objectives of the research were to study: (1) the influence of peat and paddy straw compost on crop growth and production, and (2) the influence of residual effect of peat and paddy straw compost application on soil chemical characteristics. The research was conducted at Cikembang, Sukabumi; Cikabayan, Kampus IPB Darmaga, Bogor; and Rasau Jaya,Pontianak, respectively. Soil analysis was conducted at soil laboratory of Department of Soil Science and Land Resource, IPB and Soil Research Centre, Bogor. The research area was degraded grass land located at 300 m above sea level with slope less than 15%. Factorial Design with two replications was used with soybean var. Slamet as an indicator crop. Treatments comprise peat and paddy straw compost, each with five dosesi.e. for peat : 0 t ha-1, 7 t ha-1, 14 t ha-1, 21 t ha-1, and 28 t ha-1, respectively and for paddy straw compost 0 t ha-1, 10 t ha-1, 20 t ha-1, 30 t ha-1, and 40 t ha-1. Observation was carried out for crop height, grain dry weight, and soil chemical characteristics after harvesting. The results showed that application of peat and paddy straw compost significantly increased crop height and production of soya bean. Application of single 40 t ha-1 paddy straw compost significantly increase the highest grain dry weight. The rehabilitation effort was also increase soil fertility status. Residue of paddy straw compost and peat application was significantly increase soil chemical characteristics i.e.: organic-C, N, P2O5, K2O, Ca, Mg, and Base saturation of the soil. The highest N, P2O5, K2O, Ca, Mg, CEC, and base saturation of the soil was found in application of single paddy straw with doses of 40 t ha-1. Application of paddy straw compost fordegraded land increased soya bean production and rehabilitated of soil condition better than application of peat.
Sifat-Sifat Tanah pada Lahan Potensial untuk Pengembangan Pertanian di Provinsi Jambi dan Implikasi Pengelolaannya Rudi Eko Subandiono; Erna Suryani; Djadja Subardja
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.v38n1.2014.51-62

Abstract

Analisis Ketersediaan dan Kebutuhan Air Irigasi pada Lahan Sawah : Studi Kasus di Provinsi Sulawesi Selatan Nani Heryani; Budi Kartiwa; Adang Hamdani; Budi Rahayu
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.v41n2.2017.135-148

Abstract

Abstrak. Data dan informasi sumber daya air dalam suatu kawasan dapat digunakan sebagai dasar dalam menentukan teknologi pengelolaan air yang tepat sehingga dapat menjamin keberlanjutan ketersediaan sumber daya airnya. Lebih lanjut teknologi pengelolaan air tersebut perlu diaplikasikan pada skala petani untuk menjawab permasalahan aktual di lapangan. Penelitian dilaksanakan di Provinsi Sulawesi Selatan pada bulan Januari sampai dengan Desember 2015. Tujuan penelitian adalah untuk mengetahui ketersediaan dan kecukupan air irigasi pada budi daya padi dan jagung di Provinsi Sulawesi Selatan. Penelitian dilaksanakan melalui beberapa tahapan yaitu: i) persiapan dan pengumpulan data pendukung, ii) survei dan pengumpulan data lapang, dan iii) analisis data dan pemetaan. Ketersediaan air irigasi diketahui melalui pemodelan hidrologi dengan model IFAS (Integrated Flood Analysis System), sedangkan kebutuhan air ditentukan berdasarkan kebutuhan air tanaman padi dan jagung pada satu siklus pertanaman. Hasil penelitian menunjukkan bahwa Provinsi Sulawesi Selatan memiliki 4 golongan ketersediaan irigasi (1-4) dengan debit air antara 0,3->0,9 l/detik/ha, dan 4 indeks kecukupan irigasi yaitu A1 sampai A4, yaitu wilayah yang memiliki IP (indeks pertanaman) 300 berturut-turut padi-padi-padi; padi-padi-palawija; padi-palawija-palawija; dan palawija-palawija-palawija. Studi  kasus di 5 kabupaten yaitu: Gowa, Jeneponto, Kota Makasar, Maros dan Takalar menunjukkan bahwa di kelima kabupaten tersebut dengan 33 kecamatan memiliki indeks kecukupan irigasi A1 dengan pola tanam padi-padi-padi. Informasi neraca ketersediaan dan kecukupan air irigasi yang digambarkan dalam bentuk indeks kecukupan irigasi dapat digunakan sebagai dasar penentuan pola tanam dan sangat bermanfaat dalam pengelolaan sumber daya air untuk meningkatkan produktivitas lahan dan mendukung ketahanan pangan.Abstract. Water resources data and informations in the region can be used as a basis for determining the technology of water resources management to ensure the sustainability of water resource availability. That water management technology should be applied on farmer scale to address the actual problems in the field. The research was conducted on Januari-December 2015, and the aims of the research to determine the water availability and adequacy index of irrigation. in the Province of South Sulawesi. The research was conducted on: a) the preparation and collection of supported data, b) field surveys, and c) data analysis and mapping. Irrigation water availability was calculated by IFAS (Integrated Flood Analysis System) hydrological modeling. Water demand is determined based on crop water requirement of rice and corn in one cropping cycle. Result showed that South Sulawesi Province has 4 irrigation availability group with discharge 0,3->0,9 l/dt/ha, and 4 irrigation sufficiency indexs ( A1 until A4) namely the areas which have 300 cropping index:  rice-rice-rice; rice-rice-cash crop, rice- cash crop-cash crop; cash crop-cash crop–cash crop respectively.  Case studies of 5 districs: Gowa, Jeneponto, Kota Makassar, Maros and Takalar showed that in those districs which have 24 sub districs have irrigation sufficiency index of A1 with the planting pattern of rice-rice-rice. The informations of water availability and adequacy index as the basis for determining the cropping pattern is very helpful in water resources management to improve land productivity and support food security.
Evaluation of Soil Properties of the Alluvial Landform in Three Locations of Donggala Regency, Central Sulawesi . HIKMATULLAH; . SUKARMAN
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

Alluvial landforms in Donggala Regency, Central Sulawesi, are main agricultural land, but information of soil properties has not been yet studied and published. The objectives of the study were to evaluate soil physical, chemical and mineralogical properties of alluvial landform and potential fertility for agriculture. Five pedons from Palu valley, five pedons from northcoast and three pedons from west coast of Donggala regency were selected for laboratory analyses. The pedons represent dominant soil groups, consisting of Ustifluvents, Haplustepts, Eutrudepts, and Endaoquepts. To evaluate soil property differences among the locations, a paired test comparison was applied. To compare clay or organic carbon contents with CEC soils, a multiple linier regression was applied. The results indicatethat the soils of the areas have loamy sand to sandy clay loam textures, slightly acid to slightly alkaline, low to very low organic carbon contents, high P2O5 and K2O (extracted by HCl 25%) contents, medium to high available P2O5 (extracted by Olsen), low soil CEC, high clay CEC and base saturation. The soil properties showed wide variation with coefficient variation (CV) ranging from 23 to 98%, except for pH and base saturation (CV<20%). The results of pair test comparison indicated that sand content, total K2O, and available P2O5 were differ very significantly for all pairs, whereas clay, silt, and organic carbon contents, CEC soil and CEC clay were differ very significantly only for two pairs of the locations that was between Palu vallley and north coast and west coast. The results of multiple linierregression analyses show that clay content has closer relationship to CEC soil rather than organic carbon content. Composition of sand mineral fraction was dominated by quartz and rock fragments, but it shows relatively high weatherable minerals (12-46%), while clay mineral was a mixture of smectite and illite. The potential fertility of the soils was relatively good,with main contraints of low organic matters and low soil CEC. Incorporation of organic matters, such as green manure and crop residues, is suggested to improve and increase CEC soils and nutrient availability.
Pengaruh Amelioran terhadap Perbaikan Sifat Tanah dan Produksi Cabai Rawit (Capsicum frutescens) pada Lahan Bekas Tambang Timah Umi Haryati; Sutono Sutono; I Gusti Made Subiksa
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.v43n2.2019.127-138

Abstract

Abstrak. Lahan bekas tambang timah merupakan lahan yang terdegradasi berat dan memerlukan amelioran (pembenah tanah) untuk rehabilitasinya. Penelitian ini bertujuan untuk mempelajari pengaruh amelioran terhadap produktivitas tanah dan hasil tanaman cabai rawit pada lahan bekas tambang timah. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (Randomized Block Design) dengan 6 perlakuan dan 4 ulangan. Adapun perlakuannya adalah: Kontrol (tanpa amelioran) (B-0), Pupuk kandang 25 t ha-1 (B-1), Biochar Accasia mangium 25 t ha-1 (B-2), Biochar sekam 25 t ha-1 (B-3), Biochar Accasia mangium + pupuk kandang (1:1) 25 t ha-1 (B-4), Biochar sekam + pupuk kandang (1:1) 25 t ha-1 (B-5). Hasil penelitian menunjukkan bahwa tanah pada lahan bekas tambang mempunyai sifat fisik yang kurang baik untuk mendukung pertumbuhan tanaman. Tanah tersebut mempunyai bulk density (BD) dan particle density (PD) yang cukup tinggi, ruang pori total (RPT), pori air tersedia dan pori drainase lambat yang rendah serta pori drainase cepat yang tinggi . Dengan demikian tanah mempunyai kapasitas memegang air (water holding capacity) yang rendah. Campuran biochar sekam dan pupuk kandang (1:1) memberikan hasil tanaman tertinggi (8,7 t ha-1); nyata lebih tinggi dari perlakuan tanpa pemberian amelioran (1,7 t ha-1). Amelioran biochar Accasia mangium atau biochar sekam yang dicampur dengan pupuk kandang (1:1), memberikan hasil tanaman yang lebih baik dibandingkan dengan pemberian amelioran tersebut secara tunggal.Abstract. Tin mined land is highly degraded land with low soil fertility status and hence requires ameliorant for fertility improvement. This research aimed to study the effects of ameliorant on soil physical and chemical properties and cayenne pepper yield in tin mined land. The experimental design used was Randomized Block Design with six treatments and four replications. The treatments were: control (without ameliorant) (B0), 25 t ha-1 cattle manure (B1), 25 t ha-1 Acacia mangium biochar (B2), 25 t ha-1 rice husk biochar (B3), Acacia mangium biochar + cattle manure (1:1) 25 t ha-1 (B-4), and rice husk biochar + cattle manure (1:1) 25 t ha-1 (B-5). The results showed that the soil physical and chemical properties of the tin mined land were so poor to support plant growth. The soil had a high bulk density (BD) and particle density (PD), low total pore space, low percentage of available water pores, and high percentage of rapid drainage pore. The mixture beetwen biochar of rice husk and cattle manure (1:1) gave the highest crop yield of 8.7 t ha-1; and it was significantly higher than that of the treatment without ameliorants of 1.7 t ha-1. Application of Acacia mangium biochar or rice husk biochar mixed with cattle manure (1:1) gave a higher yield than that of individual biochar without cattle manure. 
Eksplorasi Bakteri Pendegradasi Insektisida Klorpirifos di Lahan Sayuran Kubis Jawa Barat Eman Sulaeman; Asep Nugraha Ardiwinata; Mohamad Yani
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 40, No 2 (2016)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v40n2.2016.103-112

Abstract

Abstrak: Insektisida klorpirifos merupakan salah satu jenis insektisida yang paling banyak digunakan oleh petani untuk mengendalikan berbagai jenis hama tanaman, akan tetapi penggunaan  insektisida yang terus menerus dan tidak sesuai dengan aturan dapat berakibat terhadap kerusakan lingkungan, penurunan kualitas lahan dan kesehatan manusia. Perbaikan kerusakan lahan yang tercemar insektisida dapat dilakukan secara bioremediasi  dengan memanfaatkan aktifitas mikroorganisme. Penelitian dilakukan dengan cara mengambil contoh tanah di lahan tanaman kobis di daerah Cisarua, Pacet dan Lembang, contoh tanah kemudian preparasi dan ditumbuhkan di media Nutrient Brouth (NB) yang telah dicemari insektisida klorpirifos, isolate yang tumbuh kemudian dimurnikan dalam media Nutrient Agar (NA). Isolat murni yang diperoleh diuji kemampuannya dalam mendegradasi insektisida klorpirifos lalu di identifikasi secara molekuler.  Hasil penelitian menunjukkan, tanah Cisarua, Pacet dan lembang diperoleh sebanyak 30 isolat yang mampu tumbuh di media tercemar dan mampu mendegradasi  insektisida klorpirifos dengan kisaran sebesar  8,66- 50,63%. Isolate yang paling tinggi dalam mendegradasi insektisida klorpirifos adalah C3NP1 sebesar 39,67%, P5NP  50,63% dan L9NP sebesar 44,98%. Hasil penetapan secara molekuler dari isolate C3NP1 memiliki kemiripan 99,80% dengan Pseudomonas montiilii, P5NP memiliki kemiripan 95,60% dengan Bacillus cereus dan T9NP memiliki kemiripan 92,7% dengan Pseodomonas sp.Abstract. Chlorpyrifos insecticide is one of insecticide that mostly used by farmer to control many kind of pests, but the use of this insecticide continuously have effect to environmental damage, decrease of land quality, and human health. Improving quality of land contaminated with insecticide can be done with bioremediation by using microorganism activities. This research was started by taking soil samples in cabbage crop land at Cisarua, Pacet, and Lembang districts, spread in Nutrient broth (NB) medium that contained chlorpyrifos, and grown isolates were purified on Nutrient agar medium.  The purified isolates were tested their ability to degrade chlorpyrifos insecticide, and then identified by 16S rRNA molecular identification. The result shows that 6 isolates were obtained from soil samples from Cisarua, Pacet, and Lembang districts. They grow on contaminated medium and have ability to degrade chlorpyrifos insecticide about 8,66 to 50,63%. The best of 3 isolates that had the highest ability to degrade chlorpyrifos insecticide were C3NP1 (39,67%), P5NP (50,63%), and L9NP (44,98%). The resulted of molecular identification shown that isolate C3NP1 has 99,80% similarity to Pseudomonas  monteilii, isolate P5NP has 95,60% similarity to Bacillus cereus, and isolate L9NP has 92,70% similarity to Pseudomonas sp.
Sustainability Index of Rice Field for Supporting Spatial Planning (Case Study in Jember District, East Java) . NURWADJEDI; BUDI MULYANTO; SUPIANDI SABIHAM; ARIS PONIMAN; . SUWARDI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 32 (2010): Desember 2010
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n32.2010.%p

Abstract

Rice Field agriculture in Jember district is a main sector due to its contribution to rice production in this region. The objective of this study is to determine the rice field sustainability index based on agro-ecosystem zone and to formulate policy alternatives for supporting the spatial planning in achieving sustainable rice field agriculture. The study used the primary andsecondary data which include biophysical environment, economy, social and culture. The data analysis used GIS (Geographic Information System) modelbase, factor analysis, and AHP (Analytical Hierarchy Process). The results showed that the sustainability index of the rice field agro-ecosystem zones were different. The threats of the rice field sustainability were causedby the main indicators of the biophysical environment, economy, social, and culture such as water availability, soil nutrients of Carbon organic content, Nitrogen, and Phosphor-available, profit, fertilizer access, land conversion, land ownership and fragmentation, farmer education, and age of farmer. To overcome those threats, the policy consideration was more dominantly determined by the biophysical factor rather than that of theeconomy, social, and culture. The implementation of the policy tohandle the threats needs to be coordinated among the stakeholders, considering that the rice field resource can be categorized into a common pool resource.

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