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All Journal Jurnal Ilmu Lingkungan Journal of Tropical Soils Caraka Tani: Journal of Sustainable Agriculture Jurnal Sumberdaya Lahan Jurnal HPT (Hama Penyakit Tumbuhan)
Ali Pramono
Indonesian Agricultural Environment Research Institute (IAERI),
Agriculture, Biological Sciences & Forestry Environmental Science

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BACTERIAL Cr (VI) REDUCTION AND ITS IMPACT IN BIOREMEDIATION Pramono, Ali; Rosariastuti, MMA Retno; Ngadiman, N; Prijambada, Irfan D
Jurnal Ilmu Lingkungan Vol 11, No 2 (2013): Oktober 2013
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.798 KB) | DOI: 10.14710/jil.11.2.120-131

Abstract

ABSTRACTChromium is hazardous pollutant for ecosystem caused chromium especially inhexavalent form is very toxic, has high solubility and mobility, teratogenicity, mutagenicity andcarcinogenicity to living system related with its oxiding power. Remediation of soilcontaminated of heavy metals was important caused soil as medium for food producing.Conventional methods for heavy metals remediation consist of physical and chemical processbut these applications were costly and less effective. One of the remediation technologies is theusing living organisms such as microorganisms, because they have ability to reduce Cr(VI) intonon toxic form, Cr(III). The aims of this research were to evaluate the reduction activity ofrhizobacterial isolate and to identify the isolate which take a role in reducing chromiumabsorption by plant. The results showed that Isolate 39 was able to grow on LB mediumcontaining 200 ppm Cr(VI). Isolate 39 reduced Cr(VI) up to 15 ppm concentration level inminimal medium. Isolate 39 has ability to reduce Cr(VI) both at growing cells and resting cellsconditions up to 100% and 51% within 18 hours, respectively. Isolate 39 increased thephytostabilization ability of chromium by Zea mays at 30 days after seeding 3.8 timescompared than control. Based on physiological characteristics and partial sequencing of 16SrRNA gene, Isolate 39 was identified as Agrobacterium sp.Key words : Agrobacterium sp, hexavalent chromium, reduction, Zea mays
The Stratification of Organic Carbon and Nitrogen in Top Soils as Affected by the Management of Organic and Conventional Rice Cultivation Anshori, Arif; Pramono, Ali; Mujiyo, Mujiyo
Caraka Tani: Journal of Sustainable Agriculture Vol 35, No 1 (2020): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.192 KB) | DOI: 10.20961/carakatani.v35i1.34488

Abstract

Organic and conventional management in rice cultivation have an impact on the nature of soil and the sustainability of agricultural system. This study aimed to determine the stratification of organic carbon and nitrogen in top soil from organic and conventional rice management. Top soil samples from organic and conventional rice management were taken before planting rice to find out the parameters of several soil characteristics. After rice was planted, top soil samples were taken at the depths of 0-4, 4-8, 8-12, 12-16, 16-20, 20-24 and 24-28 cm from organic and conventional rice fields, to determine the total organic carbon, total nitrogen and nitrate. The results show that organic rice management will provide better soil properties. Stratification of organic carbon and nitrogen was found in top soil from organic and conventional rice fields. Organic rice field appeared to have organic carbon content that was significantly higher than that of conventional rice field, and it is concentrated on top soil surface. The total nitrogen content in layers 0-4 cm and 4-8 cm in organic rice field was considerably higher than in conventional, but the content was different in layers 8-24 cm. Nitrate content was significantly different in top soil 12-16, 16-20 and 20-24 cm, significantly in top soil 8-12 cm, with nitrate in top soil of conventional rice field higher than in organic rice field. However, it was not significant in 0-4 cm and 4-8 cm top soils. This condition was influenced by organic and synthetic chemical fertilization, nitrification, denitrification and leaching.
PENINGKATAN PRODUKTIVITAS PADI SAWAH TADAH HUJAN MELALUI PENERAPAN TEKNOLOGI ADAPTIF DAMPAK PERUBAHAN IKLIM Wihardjaka, Anicetus; Pramono, Ali; Sutriadi, Mas Teddy
Jurnal Sumberdaya Lahan Vol 14, No 1 (2020)
Publisher : Indonesian Center for Agriculture Land Resource Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.341 KB) | DOI: 10.21082/jsdl.v14n1.2020.25-36

Abstract

Abstrak. Optimalisasi lahan sawah tadah hujan memberikan kontribusi terhadap ketersediaan pangan nasional yang sebagian besar masih dipasok dari lahan optimal sawah beririgasi. Lahan suboptimal sawah tadah hujan berpotensi dalam mendukung ketersediaan pangan nasional. Lahan sawah tadah hujan sangat rentan terhadap dampak perubahan iklim terutama cekaman kekeringan dan serangan organisme pengganggu tanaman. Antisipasi dampak perubahan iklim di lahan sawah tadah hujan dilakukan dengan penerapan teknologi adaptif dan sekaligus sebagai upaya mirigasi gas rumah kaca. Beberapa teknologi adaptif yang berpotensi meningkatkan produktivitas padi sawah tadah hujan adalah penggunaan varietas unggul baru, penentuan waktu tanam dengan kalender tanam, pengelolaan sumberdaya air dengan teknologi embung, pengendalian OPT terpadu dan pengelolaan lahan. Teknologi mitigasi seperti pengairan berselang, penggunaan varietas rendah emisi, penggunaan bahan amelioran, pemupukan secara berimbang, dan integrasi tanaman padi ? ternak efektif menurunkan emisi gas rumah kaca di lahan sawah tadah hujan. Integrasi tanaman pangan-ternak bebas limbah merupakan salah satu upaya mensinergiskan aksi adaptasi dan aksi mitigas terhadap perubahan iklim di ekosistem lahan sawah tadah hujan. Abstract. Optimization of rainfed lowland rice contributes on national food availability which is still generally supplied from irrigated lowland rice. The sub-optimal rainfed lowland is quite susceptible to climate change impacts, especially drought stress and incidence of pests and diseases. Anticipating climate change impacts in rainfed lowland are approached by applying adaptive technology as well as greenhouse gase mitigation. Some adaptive technologies which potentially increase rainfed rice productivity are new superior varieties, cropping calendar for determining planting time, water resources management with small water reservoir, and integrated pests and diseases control. Some mitigation technologies such as intermittent irrigation, high yielding varieties with low emissions, ameliorant materials use, balanced fertilization, and integrated food crop-livestock reduce effectively greenhouse gas emissions in rainfed lowland rice areas. Integrated food crops-livestock with zero waste systems is one of synergic efforts between adaptation and mitigation actions on climate change impacts in ecosystems of rainfed lowland rice.
PENGARUH SISTEM PENGAIRAN DAN BAHAN ORGANIK TERHADAP PERKEMBANGAN PENYAKIT BERCAK COKLAT SEMPIT Cercospora oryzae DAN HAWAR PELEPAH DAUN Rhizoctonia sp. PADA TANAMAN PADI: EFFECT OF IRRIGATION SYSTEM AND ORGANIC MATTER ON DEVELOPMENT OF NARROW BROWN LEAF SPOT Cercospora oryzae AND SHEATH BLIGHT Rhizoctonia sp. IN RICE Sofyaningrum, Alaida Nur Laili; Martosudiro, Mintarto; Choliq, Fery Abdul; Pramono, Ali
Jurnal HPT (Hama Penyakit Tumbuhan) Vol. 12 No. 1 (2024)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jurnalhpt.2024.012.1.1

Abstract

Penyakit tanaman yang sering menyerang tanaman padi di antaranya yaitu penyakit bercak coklat sempit Cercospora oryzae Miyake dan penyakit hawar pelepah daun yang disebabkan oleh Rhizoctonia sp.. Perkembangan penyakit dipengaruhi oleh kegiatan budidaya karena berkaitan dengan lingkungan yang disediakan untuk pertumbuhan dan perkembangan tanaman, meliputi sistem pengairan dan bahan organik. Oleh karena itu dilakukan penelitian mengenai pengaruh sistem pengairan dan bahan organik terhadap perkembangan penyakit bercak coklat sempit C. oryzae dan hawar pelepah daun Rhizoctonia sp. pada tanaman padi. Penelitian dilaksanakan di lahan Balai Penelitian Lingkungan Pertanian (Balingtan) pada bulan Oktober 2022 sampai Februari 2023. Penelitian ini menggunakan Rancangan Acak Kelompok Faktorial yang terdiri dari 2 faktor yaitu sistem pengairan terdiri atas 3 taraf dan bahan organik jerami yang terdiri dari 2 taraf. Hasil penelitian menunjukkan bahwa perlakuan sistem pengairan tidak berpengaruh nyata terhadap intensitas penyakit bercak coklat sempit dan hawar pelepah daun. Pemberian bahan organik jerami berpengaruh dalam menekan intensitas penyakit. Pengairan tergenang dengan bahan organik menghasilkan tinggi tanaman yang tertinggi. Seluruh perlakuan tidak berpengaruh nyata terhadap jumlah anakan. Penambahan bahan organik berpengaruh nyata terhadap hasil produksi tanaman padi. Intensitas infeksi penyakit bercak coklat sempit berkorelasi nyata dan negatif terhadap hasil produksi tanaman padi.
Mitigation Scenario for Reducing Greenhouse Gas Emission from Rice Field by Water Management and Rice Cultivars Pramono, Ali; Adriany, Terry Ayu; Susilawati, Helena Lina
JOURNAL OF TROPICAL SOILS Vol. 25 No. 2: May 2020
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2020.v25i2.53-60

Abstract

Rice production is a significant anthropogenic source of methane (CH4) and nitrous oxide (N2O), two important greenhouse gases (GHGs). Several strategies for reducing GHGs emissions from paddy fields are water management and the use of low emission rice cultivars. The purpose of this study was to determine the effects of water management and rice cultivars on the grain yield and greenhouse gas (GHG) emissions. The research was conducted at the Indonesian Agricultural Environment Research Institute (IAERI), Pati District, Central Java Province during the dry season 2017 (March-June 2017). The study used a factorial randomized block design with the first factor were water managements: A1 = continuous flooding at 5 cm height and A2 = alternate wetting and drying/AWD), and the second factor were rice cultivars: V1 = Ciherang, V2 = Inpari 32, V3 = Mekongga with three replications. All treatments received an equal amount of farmyard manure and inorganic fertilizers. GHG measurements were done by using a closed chamber method. The results of this study indicated that the combination of AWD treatment with Ciherang, Inpari 32, and Mekongga rice cultivars significantly reduced CH4 emissions by 23%, 46%, and 6%, respectively. The Inpari 32 rice variety produced the highest grain yield compared to others, but there were no significant differences in grain yield between all of the treatments. Therefore, AWD technique in combination with Inpari 32 rice cultivar could be a potential option for maintaining the yield-scaled global warming potential of rice production at a lower level, without reducing grain yield.
Co-Authors A. Wihardjaka Adriani, Terry Ayu Adriany, Terry Ayu Arif Anshori, Arif Fery Abdul Choliq Irfan Dwidya Prijambada Mintarto Martosudiro Mujiyo Mujiyo N Ngadiman PRIHASTO SETYANTO Retno Rosariastuti Sofyaningrum, Alaida Nur Laili Susilawati, Helena Lina Sutriadi, Mas Teddy Wihardjaka, Anicetus