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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia Caraka Tani: Journal of Sustainable Agriculture Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Hilirisasi IPTEKS (JHI) PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Agroradix : Jurnal Ilmu Pertanian Jurnal Riset Perkebunan (JRP) JIA (Jurnal Ilmiah Agribisnis) : Jurnal Agribisnis dan Ilmu Sosial Ekonomi Pertanian Madani : Jurnal Pengabdian Kepada Masyarakat Jagur: Jurnal Agroteknologi Buletin Dharmas Andalas
Dewi Rezki
Agroecotechnology Study Program, Faculty Of Agriculture, Universitas Andalas, Indonesia
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Dentistry Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Library & Information Science Public Health Social Sciences Veterinary Other

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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 | 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.
Study Of Soil Physical Properties In Ex-Gold Mining Land, Oil Palm (Elaeis Guineensis Jacq.) Plantation, And Forests On Ultisol Resti Arjuni Santi; Dewi Rezki; Adrinal
Jurnal Riset Perkebunan Vol. 3 No. 2 (2022): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.3.2.77-92.2022

Abstract

The soil physical properties are one of the components of soil fertility that function as a place for roots to penetrate. Different types of land uses affect the soil physical properties, especially on the availability of water and soil aeration which indirectly affects the availability of nutrients in the soil. Research on the soil physical properties of ex-gold mining, oil palm plantations and forests was carried out on Ultisol located in Tebing Tinggi Village, Dharmasraya Regency from April until October 2021. The objective of this study was to obtain the comparison of soil physics properties in ex-gold mining land with oil palm and forest land on Ultisol. The method on this study was a survey with purposive sampling on three different land uses (ex- gold mining land, oil palm land and forest) at a depth of 0-20 cm and 20-40 cm and it was replicated 3 times. The observed parameters were soil texture, organic matter, volume weight, soil pore space, soil water content, permeability, and soil aggregate stability. Based on soil analysis in the laboratory, it was obtained that the physical conditions of the soil in three different land uses, i.e the physical condition of the oil palm land and forest were better than the ex-gold mining land. The soil texture on ex-gold mining land was classified on sandy clay loam and sandy loam with a very low organic matter content (0,20-1,72 %) if compared with oil palm and forest land. The volume weight in each land use was relatively high with the total soil pore space was low except in oil palm land depths of 0-20 cm, which is 69,93 % vol (moderate). Permeability was slow to moderate with the soil aggregate stability classified as unstable to steady. Soil water content was relatively low except in forest land depths of 20-40 cm which very high criteria (33,93 %).
The Effect Of Administration Of Cow's Blood Liquid Fertilizer Dosage On The Growth Of Cocoa (Theobroma Cacao L.) Growth In Ultisol Sahroni Ridoi; Yusniwati; Dewi Rezki
Jurnal Riset Perkebunan Vol. 3 No. 2 (2022): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.3.2.110-117.2022

Abstract

Pertumbuhan tanaman kakao sangat dipengaruhi oleh ketersediaan unsur hara di dalam tanah. Ketersediaan unsur hara ditentukan oleh sifat fisik, kimia dan biologi tanah. Pada tanah marginal seperti Ultisol memiliki tingkat ketersediaan unsur hara yang sangat rendah. Hal ini disebabkan oleh proses pelapukan yang intensif. Oleh karena itu, perlu dilakukan perbaikan kesuburan tanahnya. Salah satu upaya yang bisa dilakukan untuk memperbaiki kesuburan tanah Ultisol agar kakao dapat tumbuh dengan baik adalah dengan melakukan penambahan pupuk alam. Pupuk alam dapat berasal dari pemanfaatan sisa-sisa tanaman atau hewan. Salah satu diantaranya yaitu pemanfaatan limbah darah sapi, limbah ini belum banyak digunakan sebagai sumber pupuk alam. Penelitian ini dilaksanakan pada bulan November 2019 hingga April 2020, yang bertempat di kebun percobaan kampus 3 Universitas Andalas, Dharmasraya. Penelitian ini merupakan penelitian eksperimen yang disusun dalam Rancangan Acak Lengkap (RAL). Perlakuan yang dicobakan terdiri dari 5 taraf perlakuan yaitu: P0: 0 ml darah/L air P1: 40 ml darah/L air, P2: 60 ml darah/L air, P3: 80 ml darah/L air, P4: 100 ml darah/L air. Dari hasil penelitian diketahui bahwa penambahan pupuk cair darah sapi memberikan pengaruh terhadap pertumbuhan bibit kakao pada ultisol. Aplikasi pupuk cair darah sapi dengan dosis 40 ml – 100 ml pada tanaman kakao memberikan respon pertumbuhan yang lebih baik pada tanah ultisol, jika dibandingkan dengan tanaman yang tidak ditambahkan pupuk cair darah sapi. Hal ini dapat dilihat pada variabel pengamatan jumlah daun dan diameter batang. Dengan demikian pemanfaatan limbah darah sapi dapat dipertimbangkan sebagai salah satu sumber pupuk cair alami.
The Effect of Anaerobic Composting Method of Coffee Waste on The Growth of Robusta Coffee Seedlings (Coffea canephora L.) Dewi Rezki; Warnita; Supriyanto; Niken Adrika Susanti; Edwin; Atika Mulia Chandra
Jurnal Riset Perkebunan Vol. 5 No. 2 (2024): Jurnal Riset Perkebunan (JRP)
Publisher : Jurusan Budidaya Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrp.5.2.54-64.2024

Abstract

Coffee is one of the plantation commodities that has significant economic value. A factor that needs to be considered in coffee plant cultivation is good planting media composition. This study aims to determine the effect of planting media composition on the growth of robusta coffee seedlings. This study used a Completely Randomized Design with treatments M0= Soil: 100%, M1= Soil: 50% + Coffee Husk Compost: 25% + Rice Husk: 25%, M2= Soil: 25% + Coffee Husk Compost: 50% + Rice Husk: 25%, M3= Soil: 25% + Coffee Husk Compost: 25% + Rice Husk: 50%. The analyses conducted were compost analysis and initial and post-incubation soil analysis. Observation data were analyzed using the F test followed by DNMRT at the 5% level. The research results show that the provision of coffee husk compost and rice husks affects the chemical properties of the soil and the growth of coffee seedlings. The planting media composition of Soil: 25% + Coffee Husk Compost: 50% + Rice Husk: 25% proved to increase the pH of the planting media from 5.5 to 6.6, increase in total N-value from 0.2% to 0.5%, available P from 18.6 ppm to 38.5 ppm and the soil CEC from 7.6 me/100g to 36.6 me/100g. This planting media composition also makes it possible to enhance the growth of robusta coffee seedlings in plant height, stem diameter, number of leaves, leaf width, and root volume. Thus, this planting media composition is a suitable medium for the growth of robusta coffee seedlings.
Pemanfaatan Tandan Kosong Sebagai Biochar Guna Meningkatkan Kualitas Lahan Kebun Kelapa Sawit Dewi Rezki; Dede Suhendra; Sri Heriza; Wulan Kumala Sari; Alefia Lathifa Hanum; Muhammad Aulia Rahman; Qomara Anzalia; Reza Alam Nur Hasibuan; Tristan Terence; Faghfirlana Bifadlika; Irfan Aditya; Mutiara Ramadhani
Buletin Dharmas Andalas Vol. 1 No. 2 (2024): Buletin Dharmas Andalas
Publisher : Departemen Budidaya Tanaman Perkebunan, Fakultas Pertanian, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/bda.v1i2.10

Abstract

Limbah tandan kosong kelapa sawit (TKKS) merupakan limbah padat yang dihasilkan dari sisa pengolahan di pabrik kelapa sawit. Seiring dengan bertambahnya luas lahan kebun kelapa sawit menyebabkan jumlah limbah TKKS semakin meningkat. Meningkatnya jumlah limbah ini secara terus menerus akan menyebabkan terjadinya pencemaran lingkungan, seperti polusi udara akibat bau yang tidak sedap. Akan tetapi, limbah TKKS dapat memberikan manfaat jika diolah dengan baik. Salah satu cara yang bisa dilakukan dalam pengolahan limbah TKKS adalah dengan merubah limbah tersebut menjadi biochar. Biochar dari TKKS dapat dimanfaatkan untuk memperbaiki kualitas lahan di kebun kelapa sawit rakyat. Kegiatan pengabdian masyarakat yang terintegrasi dengan mahasiswa Kuliah Kerja Nyata (KKN) ini bertujuan untuk memberikan pelatihan cara membuat biochar dari limbah TKKS kepada kelompok tani Semoga Jaya yang berada di Kenagarian Koto Beringin Kecamatan Tiumang Kabupaten Dharmasraya. Melalui pelatihan ini, diharapkan petani dapat mengelola limbah tersebut secara mandiri dan berkelanjutan, serta memanfaatkannya dengan baik untuk perbaikan kualitas lahan kelapa sawit rakyat. Kegiatan pelatihan diikuti dengan antusias oleh petani, hal ini dapat dilihat dari banyaknya pertanyaan yang muncul selama kegiatan pelatihan berlangsung. Hal ini menunjukkan bahwa para petani sangat tertarik untuk menerima ilmu yang disampaikan, dan ingin mencoba  dan mengaplikasikan pembuatan biochar ini pada kebun kelapa sawitnya masing-masing.
Biochar Quality During Slow Pyrolysis from Oil Palm Empty Fruit Bunches and Its Application as Soil Ameliorant Amsar Maulana; Mimien Harianti; Salma Athiyya; Teguh Budi Prasetyo; Moli Monikasari; Irwan Darfis; Dewi Rezki; Herviyanti Herviyanti
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 1 (2025): January
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i1.93859

Abstract

The optimal utilization of oil palm empty fruit bunch (OPEFB) waste holds significant potential for biomass bioconversion via slow pyrolysis, presenting a promising alternative for producing high-quality biochar as a soil ameliorant. This study investigates the effects of slow pyrolysis temperatures (≤ 300 °C) on the physicochemical properties of biochar derived from OPEFB and evaluates its efficacy as a soil ameliorant. This study utilized a completely randomized design (CRD) with three replications across two experiments. The first experiment assessed the effect of slow pyrolysis temperature on the quality of biochar derived from OPEFB, with treatments set at four temperatures (150, 200, 250, and 300 °C) levels. The second experiment evaluated the impact of the selected biochar on the surface charge of oil palm plantation soil, applying biochar at five different doses (0, 20, 40, 60, and 80 tons ha-¹). The potential temperature of 200 °C in slow pyrolysis had a significant effect on the quality of biochar from OPEFB with a yield ratio of 27.84% char; proximate (91.95% volatile matter and 0.81% fixed carbon), cation exchange capacity (CEC) [167.73 cmol(+) kg-1], and macro and micronutrients (e.g., C, N, P, K, Ca, Si, Fe, Cu, Zn, and Mn). The potential of O-H, N-H, C-H, and C=O functional groups of biochar from OPEFB for nutrient availability and absorption efficiency proven by the effect of 40 tons ha-1 biochar from OPEFB which significantly increased 80% of soil surface charge [pH by 0.80; organic matter (OM) composition by 19.8%, CEC by 11 cmol(+) kg-1] and nutrients [0.93% C; 0.04% N; 17.57 ppm P2O5; 0.65 cmol(+) kg-1 K] on Inceptisols.
Co-Authors . Gusmini . Herviyanti . Reflinaldon Ade Noverta Aditya, Irfan Adrinal Alefia Lathifa Hanum Amsar Maulana Anzalia, Qomara Atika Mulia Chandra Atika Mulia Chandra Bifadlika, Faghfirlana Darwin Lumban Gaol David Willy Saputra Manullang Dede Suhendra Edwin Edwin Edwin Edwin Edwin Edwin Edwin Edwin Edwin Faghfirlana Bifadlika Halimatus Syahdia Hasibuan Hanum, Alefia Lathifa Hasibuan, Reza Alam Nur Herviyanti Indra Dwipa Irfan Aditya Irwan Darfis Irwin Mirza Umami Karjunita, Nike Mimien Harianti Moli Monikasari Muhammad Aulia Rahman Muhammad Aulia Rahman Muhammad Parikesit Wisnubroto Mutiara Ramadhani Niken Adrika Susanti Niken Adrika Susanti Novi Syafitri Qomara Anzalia Ramadhani, Mutiara Reni Mayerni Resti Arjuni Santi Resti Arjuni Santi Reza Alam Nur Hasibuan Sahroni Ridoi Sahroni Ridoi Salma Athiyya Sisilia Rosana Siska Efendi Siska Efendi Sri Heriza Supriyanto Supriyanto Syafrimen Yasin Teguh Budi Prasetyo Terence, Tristan Tristan Terence Warnita Wulan Kumala Wulan Kumala Sari Yaherwandi Yulistriani, Yulistriani Yusniwati Yusniwati Yusniwati Zahlul Ikhsan