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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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Humic Acid and Water Management to Decrease Ferro (Fe2+) Solution and Increase Productivity of Established New Rice Field . Herviyanti; Teguh Budi Prasetyo; Fachri Ahmad; Amrizal Saidi
JOURNAL OF TROPICAL SOILS Vol 17, No 1: Januari 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i1.9-17

Abstract

The purpose of this research was to gain a technological breakthrough in controlling Fe toxicity (Fe2+) on Ultisol in a new established rice field by using humic acid from rice straw compost and water management, so that optimal production of rice plants could be achieved. The experiment was designed using a 2 × 4 factorials with 3 replications in a split plot design. The main plot was water management consists of 2 levels: continuous and intermittent irrigation (2 weeks flooded and 2 weeks field capacity). Small plot was humic acid which was extracted from rice straw compost by NaOH 0.5 N which consists of 4 levels: 0, 200, 400, and 600 mg kg-1.  The results showed that applications of humic acid from 0 to 600 mg kg-1 that was followed by 2 weeks of intermittent irrigation decreased Fe2+ concentration. It was approaching levels that were not toxic to plants, with soil Fe2+ between 180-250 mg kg-1. The best treatment was found at the application of 600 mg kg-1 humic acid extracted from rice straw compost combined with 2 week flooded – 2 weeks field capacity of water management. Those treatment decreased Fe2+ concentration from 1,614 to 180 mg kg-1 and increased the dry weight of grain from 5.15 to 16.73 g pot-1 compared to continuous flooding and without humic acid application.
Isolation of Cellulolytic Bacteria from Peat Soils as Decomposer of Oil Palm Empty Fruit Bunch . Gusmawartati; . Agustian; . Herviyanti; . Jamsari
JOURNAL OF TROPICAL SOILS Vol 22, No 1: January 2017
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2017.v22i1.47-53

Abstract

The aim of the research was to find out potential strainsof cellulolytic bacteria isolated from two tropical peat soils and to studythe potency of the isolated bacteria to decompose oil palm empty fruit bunch (EFB). The research was carried out in two stages: (1) isolation of cellulolytic bacteria from peat soils and (2) testing the potency of isolated bacteria to decompose oil palm EFB. The cellulolytic bacteria were isolated from two peat soils, i.e. a natural peat soil (forest) and a cultivated peat soil (has been used as agriculture land). Isolation of cellulolytic bacteria was conducted by preparing a series dilution of culture solutions using a streak plate method in a carboxymethyl cellulose(CMC) selective medium.Isolates that were able to form clear zones surrounding their bacterial colony were further tested to study the potency of the isolates to decompose cellulose in oil palm EFB. The cellulolytic activity of the selected isolates were further determined via production of reducing sugars in an oil palm EFB liquid medium using Nelson-Somogyi method. The results showed that there are six isolates of cellulolytic bacteria that have been identified in two tropical peat soils used in the current study. Two isolates are identified in a natural peat soil (forest) and four isolates are identified in a cultivated peat soil. The isolates collected are identified as Bacillus sp., Pseudomonassp. and Staphylococcus sp. Among the isolates, an isolate of GS II-1 produces the highest concentration of reducing sugars, namely 0.1012 unitmL-1or 101 ppm, indicating that the isolate of GS II-1 is highly potential to decompose oil palm EFB. Therefore, the isolate of GS II-1 can be used as a decomposer in the bio-conversion processes of oil palm EFB.Keywords: isolation, bacteria, cellulolytic, oil palm empty fruit bunch (EFB), peat soil
The Properties of Humic Acids Extracted from Four Sources of Organic Matters and Their Ability to Bind Fe2+ at New Established Rice Field . Herviyanti; Teguh Budi Prasetyo; Fachri Ahmad; . Darmawan
JOURNAL OF TROPICAL SOILS Vol 15, No 3: September 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i3.237-244

Abstract

The Properties of Humic Acids Extracted from Four Sources of Organic Matters and Their Ability to Bind Fe2+ at New Established Rice Field (Herviyanti, TB Prasetyo, F Ahmad and Darmawan):  In order to identify the properties of humic acid extracted from four kinds of organic matters (a peat soil, a stable manure, a compost of rice straw and a municipal waste)  and their potentiality to bind Fe2+  at new established rice field, a series of experiment was done in Soil Laboratory Faculty of Agriculture, Andalas University Padang. First step was characterization of functional groups and other chemical properties of humic acids, and their reaction with Fe2+. The second step was to examine the ability of humic acids to bind Fe2+ solution at new established rice field by conducting incubation experiments.  The experiment used  a completely randomized design with three replications.  The 450 ppm Fe solution was treated with 0, 50, 100, 150, 200, 250, 300, 350, 400, and 450 ppm humic acids and incubated for 24 hours.  While top soil samples taken from Sitiung, West Sumatera were treated with 0,100, 200, 300, and 400 ppm humic acids, flooded with deionized water, and incubated for 6 weeks.  The result showed that   the functional group and other chemical characteristic of humic acid from rice straw compost and peat soil were better than those of manure and municipal waste compost. Functional group of both humic acids was dominated by COO-. High reactivity of the humic acid had been found when humic acids were added to Fe solution with ratio 1 : 1. Use of humic acid extracted from peat soil with the levels from 0 to 100, 200, 300, and 400 ppm decreased the Fe2+ concentration from 1.361 ppm to  910, 860, 831, and 776 ppm, respectively at new established rice field.  While the use of humic acid extracted from  rice straw compost with the same levels as above decreased the Fe2+ concentration  from 1361 to 770, 701, 612, and 600 ppm, respectively, after four weeks of flooding.
Improvement Chemical Properties of Oxisols and Rice Production with Humic Substances from Sub-bituminous Coal Indonesia Herviyanti Herviyanti; Gusnidar Gusnidar; M. Harianti; A. Maulana
AGRIVITA, Journal of Agricultural Science Vol 41, No 3 (2019)
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.v41i3.1106

Abstract

Humic Substances (HS) sources of  Sub-bituminous can be used as soil amandement. The purpose of this research was to examine the residual effects of HS combined with P-fertilizers and the method of  incubation to improve Oxisols fertility and rice production. The experiment consisted of 2 factors, including: 1) incubation methods (i.e. I1 = HS incubated 1 week, then incubation of P fertilizers 1 week; I2 = HS and P- fertilizers directly incubated into the soil  2 weeks; and I3 = HS and P-fertilizers mixed 1 week, then incubated to soil 1 week), and 2) residual effect of HS with P-fertilizers combinations (i.e. H1 = 800 ppm + 100%; H2 = 800 ppm + 75% R; H3 = 400 ppm + 100% R; and H4 = 400 ppm + 75% R). All treatment was compared to the tradition of fertilization by the local farmers and control. The results showed that the combination of residual effects (HS and P-fertilizers) with the incubation method decreased exchangeable Al, as consequently increased the available P in Oxisols. The HS addition increased the efficiency of P fertilizers up to 25%, as well as increased rice production in averaged 3.9 t/ha (i.e. treatment H4).
PENGUATAN KELEMBAGAAN PETANI BARAMBAN DALAM PEMASARAN SAYUR SEHAT BERSERTIFIKAT PRIMA 3 DI KECAMATAN BANUHAMPU KABUPATEN AGAM, SUMATERA BARAT Melinda Noer; Herviyanti Herviyanti; Trimurti Habazar; Cesar Welya Refdi
Jurnal Hilirisasi IPTEKS Vol 4 No 2 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i2.497

Abstract

The Baramban Farmers Group, since 2014, has been carrying out healthy vegetable farming with vegetable products that have been certified Prima 3. However, until now, the management of healthy vegetable farming by the Baramban Farmers Group in Banuhampu District, Agam Regency has not experienced much development in farming because it has not created a broad market with prices that favor the welfare of farmers. Strengthening farmer institutions in marketing healthy vegetables is thus very important and have become an essential element in developing healthy vegetable agribusiness in local, national, and even global markets. The method used is counseling, coaching and mentoring. This service activity is planned to be carried out over the next five years, starting with building a cooperation agreement with the Baramban farmer group starting in 2020. Several alternative solutions to solve the problems of healthy vegetable farmer group partners proposed and agreed upon by the Baramban Farmer Group are: a. Carry out mentoring activities for healthy vegetable farmers by transferring resources from universities through integrated science an agribusiness perspective, b, empowering farmers based on group institutional strengthening to build collective action that is independent of farmers to drive healthy vegetable markets, c. Facilitate farmers to create healthy vegetable market segments through modern markets and online markets with information technology 4.0 and 4. Building partnerships with Transmart as a modern market on a national scale and has a global-scale marketing network. The conclusion is that farmer groups are willing to become partners of the Community Service Team in a community partnership program scheme to help businesses develop.
The Controling of Iron (Fe) Toxicity with Humic Matter from Rice Straw Compost and Water Management to Increasing Productivity Established Rice Field at Sitiung, West Sumatra Herviyanti Herviyanti; T. Budi Prasetyo; F. AHMAD; M. Harianti
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 34 (2011): Desember 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n34.2011.40-47

Abstract

This experiment is held to sudy the potency of humic matter extracted from composted rice straw, combined with the various water management systems, in controlling the iron (Fe) toxicity in new-established rice field. The objective of this research is to get break through technology of controlling the iron toxicity in new-established rice field using the the humic substances and water management systems in order to get the optimum yield. This experiment uses a split-plot design with main plots are having three water management systems : continuous flooding; one week flooding and two weeks in field capacity; and two weeks flooding and two weeks in field capacity and sub-plots are having three levels of humic matter application : no humic matter; with 150 ppm humic matter = 300 kg ha-1; and with 300 ppm humic matter = 600 kg ha-1. The result shows that the application of humic matter extracted from composted rice straw decreases the Fe2+ concentration to be 135.67 ppm and 222.33 ppm in all three water management systems after eight weeks flooding. The best treatment combination is the plot with 600 kg ha-1 humic matter and 1 week flooding-2 weeks in field capacity, for it decreases Fe2+ concentration from 694 ppm down to 310 ppm, and the dry weight of grain is 1,819.7 g plot-1 (1 plot = 6 m2) or raising 770.8 g plot-1 compared with those plots with no humic matter and with continuous flooding.
Transfer Teknologi Budidaya Tanaman Hias untuk Guru-Guru Biologi P.K. Dewi Hayati; Warnita Warnita; Netti Herawati; Sutoyo Sutoyo; Martinius Martinius; Trizelia Trizelia; Herviyanti Herviyanti
Warta Pengabdian Andalas Vol 26 No 2 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.26.2.134-140.2019

Abstract

Cultivation of ornamental plants in the school is necessary to provide the loveliness, and conductive atmosphere and environment for the learning process in that school. This community empowerment program aimed to transfer knowledge and technology of ornamental plants cultivation, covering the aspects of growing media, application of plant growth regulator, propagation and hybridization of ornamental plants to the biology teachers of high school. The methods of empowerment were community learning, demonstration, training, and self-practice. Results from the activities showed that the representative biology teachers from districts and cities in West Sumatra could be understood and applied the techniques of ornamental plants cultivation in their respective schools. The Likert analysis showed that a percentage of 95.6%, indicating that the transfer of technology provided is very beneficial for high school biology teachers. Hence, this activity is needed to be continuous in the future.
PENGARUH BATUBARA TIDAK PRODUKTIF DAN TEKNIK HATCH AND CARRY ELAEIDOBIUS KAMERUNICUS TERHADAP PRODUKSI KELAPA SAWIT BARU MENGHASILKAN Dewi Rezki; Siska Efendi; Herviyanti Herviyanti
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 7, No 1 (2022): JURNAL AGROHITA
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v7i1.3255

Abstract

Rendahnya produksi kelapa sawit yang baru menghasilkan (umur 4 tahun) disebabkan oleh rendahnya tingkat kesuburan tanah dan proses penyerbukan pada bunga kelapa sawit yang belum optimal. Upaya yang dapat dilakukan antara lain adalah meningkatkan kesuburan tanah melalui penambahan bahan organik yang mempunyai reaksi cepat di dalam tanah serta optimalisasi proses penyerbukan bunga kelapa sawit melalui teknik hatch and carry Elaeidobius kamerunicus.Dalam penelitian ini terdapat 6 perlakuan yaitu P0 (tanpa perlakuan), P1 (aplikasi bahan humat dari batubara tidak produktif dengan dosis 4% C-organik), P2 (aplikasi bubuk batubara tidak produktif dengan dosis 4% C-organik), P3(penerapan teknik hatch and carry E. kamerunicus), P4 (aplikasi bahan humat dari batubara tidak produktif dengan dosis 4% C-organik yang dikombinasikan dengan teknik hatch and carry E. kamerunicus), dan P5 (aplikasi bubuk batubara tidak produktif dengan dosis 4% C-organik yang dikombinasikan dengan teknik hatch and carry E. kamerunicus). Dari hasil penelitian yang telah dilakukan diketahui bahwa penambahan bahan humat meningkatkan ketersediaan hara tanah dan serapan hara pada tanaman kelapa sawit. Penerapan teknik hatch and carry E. kamerunicus mampu meningkatkan populasi kumbang penyerbuk E. kamerunicus dari 7.655 populasi menjadi 23.725 populasi. Kombinasi bahan humat dari batubara tidak produktif dengan teknik hatch and carry E. kamerunicus menghasilkan produksi kelapa sawit terbaik yaitu 12,73 kg / tandan.
PENGARUH BATUBARA TIDAK PRODUKTIF DAN TEKNIK HATCH AND CARRY ELAEIDOBIUS KAMERUNICUS TERHADAP PRODUKSI KELAPA SAWIT BARU MENGHASILKAN Dewi Rezki; Siska Efendi; Herviyanti Herviyanti
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 6, No 2 (2021): Jurnal AGROHITA
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v6i2.5431

Abstract

Rendahnya produksi kelapa sawit yang baru menghasilkan (umur 4 tahun) disebabkan oleh rendahnya tingkat kesuburan tanah dan proses penyerbukan pada bunga kelapa sawit yang belum optimal. Upaya yang dapat dilakukan antara lain adalah meningkatkan kesuburan tanah melalui penambahan bahan organik yang mempunyai reaksi cepat didalam tanah serta optimalisasi proses penyerbukan bunga kelapa sawit melalui teknik hatch and carry Elaeidobius kamerunicus.  Dalam penelitian ini terdapat 6 perlakuan yaitu P0 (tanpa perlakuan), P1 (aplikasi bahan humat dari batubara tidak produktif dengan dosis 4% C-organik), P2 (aplikasi bubuk batubara tidak produktif dengan dosis 4% C-organik), P3  (penerapan teknik hatch and carry E. kamerunicus), P4 (aplikasi bahan humat dari batubara tidak produktif dengan dosis 4% C-organik yang dikombinasikan dengan teknik hatch and carry E. kamerunicus), dan P5 (aplikasi bubuk batubara tidak produktif dengan dosis 4% C-organik yang dikombinasikan dengan teknik hatch and carry E. kamerunicus). Dari hasil penelitian yang telah dilakukan diketahui bahwa penambahan bahan humat meningkatkan ketersediaan hara tanah dan serapan hara pada tanaman kelapa sawit. Penerapan teknik hatch and carry E. kamerunicus mampu meningkatkan populasi kumbang penyerbuk E. kamerunicus dari 7.655 populasi menjadi 23.725 populasi. Kombinasi bahan humat dari batubara tidak produktif dengan teknik hatch and carry E. kamerunicus menghasilkan produksi kelapa sawit terbaik yaitu 12,73 kg / tandan.  Dengan demikian, kombinasi batubara tidak produktif dan teknik hatch and carry E. Kamerunicusmampu meningkatkan produksi kelapa sawit baru menghasilkan.
Pengaruh Kompos, Bahan Humat dari Batubara tidak produktif dan Pupuk Buatan Terhadap Bibit Kakao (Theobroma cacao) pada Oxisol Dewi rezki; Siska Efendi; Herviyanti
Jurnal Riset Perkebunan Vol. 3 No. 1 (2022): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (396.55 KB) | DOI: 10.25077/jrp.3.1.38-47.2022

Abstract

Organic matter has a very important role in determining the level of soil fertility, especially in marginal soils such as Oxisol which is widespread in Indonesia. Organic matter that is commonly used requires large amounts and has the ability to react relatively slowly in the soil. Therefore, it is necessary to make efforts to obtain organic material that reacts quickly in the soil, such as humic material extracted from lignite. In this study, cocoa (Theobroma cacao) was used as an indicator plant. Cocoa is one of the plantation commodities that has a fairly important role in the national economy, especially as foreign exchange for the country and has a relatively stable price. This research was conducted in the form of a pot experiment using a 2 x 4 x 4 factorial design with 3 replications in a divided plot design, so that 32 treatments and 96 experimental units were obtained. From the research results obtained data that the addition of humic materials and compost up to a dose of 4% C-organic combined with artificial fertilizers can increase the availability of nutrients for cocoa seedlings in Oxisol. The best dose of each treatment was the addition of humic material at a dose of 4% C-organic combined with artificial fertilizer 50% of the recommendation and the addition of compost at a dose of 4% C-organic combined with artificial fertilizer 50% of the recommendation. The addition of organic matter can reduce the use of artificial fertilizers up to 50% of the recommendation. The addition of humic materials from unproductive coal can increase the availability of nutrients in Oxisol. Unproductive coal has the potential to increase Oxisol soil fertility.
Co-Authors . Adrinal A. Maulana Agustian Agustian Amrizal Saidi Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Amsar Maulana Arestha Leo Lita Arestha Leo Lita Armi Meirita Asmar Asmar Azizah R Benito Heru Purwanto Berd, Isril Budi Prasetyo, Teguh Cesar Welya Refdi Chici Anche Darfis, Irwan Darmawan Darmawan 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 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 P.K. Dewi Hayati Prasetyo , Teguh Budi Prihartono, Agus Teguh Ridho Ryswaldi Ridho Ryswaldi Rina Alfina Riza Syofiani Ruhaimah Ruhaimah Siska Efendi Sutoyo Sutoyo Syafrimen Yasin Syaiful Anwar T. BUDI PRASETYO Tanjung, Ellsya Tatalia Augustin Putri Teguh Budi Prasetyo Teguh Budi Prasetyo TRIMURTI HABAZAR Trizelia . Warnita