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All Journal Agrikultura Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management AGRIVITA, Journal of Agricultural Science Jurnal Solum SAINS TANAH - Journal of Soil Science and Agroclimatology JURNAL AGROHITA Adimas : Jurnal Pengabdian Kepada Masyarakat Jurnal Hilirisasi IPTEKS (JHI) Jurnal Tanah dan Iklim Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Riset Perkebunan (JRP) Jurnal Pengabdian kepada Masyarakat Dewantara
Herviyanti Herviyanti
Faculty Of Agriculture, Universitas Andalas
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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The Study of Laccase Activity as a Biosensor for Peatland Degradation in Oil Palm Plantations in Pesisir Selatan of West Sumatra: The Study of Laccase Activity as a Biosensor for Peatland Degradation in Oil Palm Plantations in Pesisir Selatan of West Sumatra Harianti, Mimien; Budi Prasetyo, Teguh; Maira, Lusi; Junaidi, Junaidi; Herviyanti, Herviyanti; Anwar, Syaiful; Kasim, Susilawati
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 3 (2023): November 2023
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v3i3.113

Abstract

The aim of the research was to study enzyme activity as biosensors for peatland degradation in oil palm plantations. The study was conducted in Pesisir Selatan,West Sumatra, on two peatlands with different thicknesses and location coordinates, namely peat with a thickness of <3 m S: 02o18'45.5", 101o00’37.3” and peat with a thickness >3 m S: 02o20’07.5”, E: 101o00’22”. The oil palm in these two locations is 11 years old (planting year of 2007). Observations and sampling of peatlands were carried out on the plantation blocks using the transect method. The transect was set perpendicular to the drainage canal. Peat samples were collected outside the roots (non-rhizosphere) of oil palm. Observation sites were at a distance of 5, 15, 25, 50, 75, 100, 150 m from the edge of the drainage canal and at the thickness of the root layer of 0-25 and 25-50 cm. Peat characteristics observed were water table level, laccase activity, water content, pH, total Fe, and Cu. The water table level in one transect ranged from 60-80 cm and was still within tolerable limits. The laccase activity as a peat degradation biosensor in oil palm plantations in Pesisir Selatan peatland was higher in the 0-25cm layer with an average of <0.5 µmol/g. The increase in water content decreased the laccase activity along with increasing of the distance from the drainage canal and the thickness of the peat layer. The increase in Fe and Cu resulted from increased levels of ash, particularly in peat with a thickness of <3 m, may suppress laccase activity. Peatland in the oil palm plantation of Pesisir Selatan is still relatively stable despite the decomposition processes characterized by laccase activity as a biosensor for peat degradation.
The Study of Laccase Activity as a Biosensor for Peatland Degradation in Oil Palm Plantations in Pesisir Selatan of West Sumatra: The Study of Laccase Activity as a Biosensor for Peatland Degradation in Oil Palm Plantations in Pesisir Selatan of West Sumatra Harianti, Mimien; Budi Prasetyo, Teguh; Maira, Lusi; Junaidi, Junaidi; Herviyanti, Herviyanti; Anwar, Syaiful; Kasim, Susilawati
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 3 No. 3 (2023): November 2023
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v3i3.113

Abstract

The aim of the research was to study enzyme activity as biosensors for peatland degradation in oil palm plantations. The study was conducted in Pesisir Selatan,West Sumatra, on two peatlands with different thicknesses and location coordinates, namely peat with a thickness of <3 m S: 02o18'45.5", 101o00’37.3” and peat with a thickness >3 m S: 02o20’07.5”, E: 101o00’22”. The oil palm in these two locations is 11 years old (planting year of 2007). Observations and sampling of peatlands were carried out on the plantation blocks using the transect method. The transect was set perpendicular to the drainage canal. Peat samples were collected outside the roots (non-rhizosphere) of oil palm. Observation sites were at a distance of 5, 15, 25, 50, 75, 100, 150 m from the edge of the drainage canal and at the thickness of the root layer of 0-25 and 25-50 cm. Peat characteristics observed were water table level, laccase activity, water content, pH, total Fe, and Cu. The water table level in one transect ranged from 60-80 cm and was still within tolerable limits. The laccase activity as a peat degradation biosensor in oil palm plantations in Pesisir Selatan peatland was higher in the 0-25cm layer with an average of <0.5 µmol/g. The increase in water content decreased the laccase activity along with increasing of the distance from the drainage canal and the thickness of the peat layer. The increase in Fe and Cu resulted from increased levels of ash, particularly in peat with a thickness of <3 m, may suppress laccase activity. Peatland in the oil palm plantation of Pesisir Selatan is still relatively stable despite the decomposition processes characterized by laccase activity as a biosensor for peat degradation.
Effect of Sub-Bituminous Coal on Negative Charge Activity on Secondary Forest and Horticultural Land Contaminated with Pesticides in Sungai Pua, Agam Herviyanti, Herviyanti; Maulana, Amsar; Prasetyo, Teguh Budi; Lita, Arestha Leo; Ryswaldi, Ridho
AGRIVITA Journal of Agricultural Science Vol 46, No 1 (2024)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v46i1.3616

Abstract

Pesticides are increasingly used to deal with crop-disrupting organisms. However, only 1% are on target, and the rest threaten agricultural ecology. This research aims to study the effect of Sub-bituminous coal (SC) on the change of negative charge activity (NCA) on two types of land, namely secondary forest (SF) and pesticide-contaminated horticultural land (HL-P). Two studies respectively used a completely randomized design (CRD) with three replications on two land types and five doses, namely: A = control or 0 t/ha [0 g SC/500 g soil]; B = 10 t/ha [2.5 g SC/500 g soil]; C = 20 t/ha [5.0 g SC/500 g soil]; D = 30 t/ha [7.5 g SC/500 g soil]; and E = 40 t/ha [10 g SC/500 g soil]. The results show that the effect of 40 t/ha SC can increase NCA on the surface of soil colloids (ΔpH) by 43% in SF and 23% in HL-P. The effect of 40 t/ha SC on the two types of land has a significant effect on increasing pH H2O, EC, CEC, and OM composition, respectively, by 0.70; 0.04 dS/m; 44.30 cmol(+)/kg and 7.60% in SF and 0.33; 0.01 dS/m; 26.89 cmol(+)/kg and 3.00% in HL-P, compared to the control.
SOSIALISASI RENCANA PELAKSANAAN MODEL DAERAH ALIRAN SUNGAI MIKRO PADA SUB DAS LUBUK PERAKU KOTA PADANG Munir, Jamilah; Berd, Isril; Herviyanti, Herviyanti; Junaidi, Junaidi; Nefilinda, Nefilinda; Prihartono, Agus Teguh
ADIMAS Jurnal Pengabdian Kepada Masyarakat Vol 7 No 1 (2023): Maret 2023
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/adi.v7i1.4997

Abstract

Hasil survey awal  membuktikan adanya penurunan kualitas lingkungan DAS  Arau sebagai akibat pola pengelolaan sumberdaya yang tidak ramah lingkungan dan meningkatnya potensi konflik para pemangku kepentingan yang terkait (stakeholders). Tujuan kegiatan adalah melakukan sosialisasi penetapan model DAS Mikro (MDM). Metoda yang dilakukan di Kampung Padayo pada Bulan  Juni 2021, dengan mengumpulkan informasi dari keinginan masyarakat terhadap penerapan MDM di kawasan Sub DAS Lubuk Peraku untuk pengelolaan DAS secara berkesinambungan.   Kegiatan sosialisasi  dilakukan di kawasan Sub DAS Lubuk Peraku di Kelurahan Indarung, Kecamatan Lubuk Kilangan, Kota Padang.. Dari hasil sosialisasi membuktikan masyarakat belum memanfaatkan tanahnya sesuai azas konservasi, dan belum memahami teknik konservasi yang benar di lahan pertaniannya.  Harapan masyarakat dari kegiatan tersebut adalah;  Terbukanya akses jalan dari Kampung Padayo dan akses wisata ke Gua Kelelawar tanpa melalui PT Semen Indonesia. Bantuan sarana prasarana jalan yang memadai.  Terbukanya akses wisata Gua Kelelawar.  Meningkatnya kesejahteraan masyarakat melalui berbagai program kegiatan yang melibatkan masyarakat.  Menanam tanaman produktif namun dapat menjaga kawasan resapan dengan menahan air yang cukup tinggi, tanaman yang diharapkan ada petai, jengkol, buahan lainnya serta beberapa tanaman kekayuan.
Co-Authors . Adrinal A. Maulana Agustian Agustian Amrizal Saidi Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Arestha Leo Lita Armi Meirita Asmar Asmar Azizah R Benito Heru Purwanto Berd, Isril Budi Prasetyo, Teguh Cesar Welya Refdi Chatarina Umbul Wahyuni Chici Anche Darfis, Irwan Darmawan, Darmawan Darusman Darusman David David Dewi Rezki Emalinda, Oktanis F. AHMAD Fachri Ahmad Fachri Ahmad Fachri Ahmad Giska Oktabriana Gusmawartati Gusmawartati Gusnidar, G Harianti, Mimien Hayati, PK Dewi Hermasah Hermansah Isril Berd Jamilah, Jamilah Jamsari Jamsari Junaidi Junaidi Junaidi Junaidi Junaidi Junaidi Juwita, Pitri Kasim, Susilawati Kurnianto, Reza Tri Lita, Arestha Leo M. Harianti M. Harianti Maidia Solfianti Maidia Solfianti Martinius Martinius Maulana, Amsar Melinda Noer Mimien Harianti Mimien Hariyanti Moli Monikasari Munir, Jamilah Nefilinda Nefilinda Nefilinda Nefilinda Netti Herawati Nurhajati Hakim Prasetyo , Teguh Budi Prihartono, Agus Teguh Ridho Ryswaldi Rina Alfina Riza Syofiani Ruhaimah Ruhaimah Ryswaldi, Ridho Siska Efendi Sutoyo Sutoyo Syafrimen Yasin Syaiful Anwar T. BUDI PRASETYO Tanjung, Ellsya Tatalia Augustin Putri Teguh Budi Prasetyo TRIMURTI HABAZAR Trizelia . Warnita