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All Journal Jurnal Lahan Suboptimal JURNAL AGROTEKNOLOGI Jurnal Agroekoteknologi Journal of Tropical Crop Science Jurnal Hilirisasi IPTEKS JERAMI Indonesian Journal of Crop Science
Indra Dwipa
Postgraduate, Andalas University, Padang, 25163, Indonesia
Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Education Social Sciences

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Growth Response Of SRI Rice In Suboptimal Land To Application Of Cattle Manure And Kieserite Nalwida Rozen; Musliar Kasim; Agustian Agustian; Indra Dwipa
JERAMI Indonesian Journal of Crop Science Vol 2 No 2 (2020): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jijcs.2.2.60-64.2020

Abstract

Population growth rates cause an increase in food demand, but the planting area is decreasing due to land-use change. The land available to be utilized by farmers is mostly suboptimal land. The disadvantages of suboptimal land are low pH values ​​(4.7) and a small number of nutrients (Nitrogen = 0.11%, Phosphorus = 0.45 ppm, very low Carbon, very high Aluminum, and medium Cation exchange capacity) and for increasing the value of suboptimal land can be given organic fertilizer such as cattle manure and kieserite. This study aims to determine the effect of cattle manure and kieserite on rice growth with the SRI planting system in suboptimal land. The study was carried out in farmers' paddy fields at Ambacang Market, Kuranji District, Padang from June to October 2019. This experiment uses a completely randomized design (CRD). Data were analyzed by the F test at a 5% significance level. If it is significantly different, it is continued with the Honestly Significant Difference test (HSD) at the 5% significance level. The results showed that the application of cattle manure and kieserite can increase the height of rice plants and the number of tillers.
Dinamika Beberapa Sifat Fisika Tanah Dibawah Sistem Usahatani Konservasi Pada Lahan Kritis Aripan Di DTA Singkarak Aprisal Aprisal; Bujang Rusman; Indra Dwipa; Refdinal Refdinal; Erlina Rahmayuni; Fajriwandi Fajriwandi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 5 No. 2 (2016): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33230/JLSO.5.2.2016.256

Abstract

Aprisal. et al. Dynamics of Some Physical Properties of Soils Under Conservation Farming System on the Critical Land Aripan in the DTA Singkarak. JLSO 5(2):137-144.The conservation farming on critical land can improve the soil properties and maintantain for a periode of time. The purpose of this research is to study the dynamics of critical land’s physical characteristics under the influence of conservation farming at Singkarak Water Catchment Area (DTA) in Nagari Aripan. The analysis of soil sample is conducted in Soil Science Department Laboratory, Faculty of Agriculture, Andalas University. This research is designed with Split Plot Design (RPT). The main plot is a soil processing system which is: conventional soil processing (po), soil processing with mulch (p1), soil processing with compost and manure (p2) and minimum soil processing (p3), while the sub plot consists of three types of plants, they are; sweet corn (t1), soy bean (t2) and peanut (p3). Each treatment is repeated three times. Result of the research is observation data in each season of the first, second and third year. To see the dynamics of soil characteristics, data of each season is viewed through graphic which based on its trend. The result of the research indicates that utilization of critical land with conservation farming system could repair and maintain some physical characteristics of soil in each growing season, such as: decreasing volume, increasing soil organic matter, porosity, and soil permeability. Productivity of soil increases on the conventional processing with mulch, compost, and manure. Conventional soil processing with added compost and manure increases productivity for 32.58% in the first year, 45.16% in the second year, and 59.73% in the third year.
Exploration and Identification of Arbuscular Mycorrhizal Fungi (AMF) in the Rhizosphere of Cocoa (Theobroma cacao. L) in West Sumatra Meisilva Erona Sitepu; Winda Purnama Sari; Indra Dwipa
JERAMI Indonesian Journal of Crop Science Vol 4 No 1 (2021): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jijcs.4.1.17-22.2021

Abstract

West Sumatra was declared as a center for Indonesian cocoa in the western portion. Almost all areas in West Sumatra are suitable for cocoa cultivation, so the cocoa planting area covers almost all the districts in the province. However, West Sumatran Cocoa production decline occurs because cocoa plantations are still mostly cultivated with smallholder plantations. The occurrence of land conversion and reduced land carrying capacity, including soil fertility, is due to the continuous use of inorganic fertilizers, which results in a decrease in the ecological quality of the land. Efforts to improve land conditions biologically by utilizing soil biotechnology. One of the soil microbes that can be utilized is Arbuscular Mycorrhizal Fungi (AMF). AMF that live in a symbiotic mutualism with plant roots and helps the absorption of plant nutrients and live in various places. The study aimed to identify arbuscular mycorrhiza Cocoa rhizosphere three districts, West Sumatra province, from the month of November 2020 to May 2021. The results showed the number of spores and diversity of AMF. The number of spores was 67-218 spores per 20 g soil. The root colonization was in the range of 21.3 - 24.6%. While the AMF diversity before trapped found three types of sport Glomus sp., Acaulospora sp., dan Gigaspora sp
Local Rice Genetic Relationship Kuantan Singingi District Using Sequence-Related Amplified Polymorphism (SRAP) Chairil Ezward; Irfan Suliansyah; Nalwida Rozen; Indra Dwipa
JERAMI Indonesian Journal of Crop Science Vol 4 No 1 (2021): JIJCS
Publisher : Department of Crop Science, Faculty of Agriculture, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jijcs.4.1.1-8.2021

Abstract

Rice (Oryza sativa L.) is an important food crop that is the staple food of more than half of the world's population because it contains nutrients that the body needs. Information on the genetic diversity of local rice scattered in the Kuantan Singingi Regency is still not available. Due to this fact, the genetic diversity of local rice can be identified by DNA analysis. A DNA-based molecular marker that can be applied as a plant genetic marker is SRAP. The SRAP (Sequence Related Amplified Polymorphism) marker system is one of the powerful molecular tools for the clarification of individual sex and estimating the genetic diversity of plant species. This study aims to determine the genetic relationship of rice plants in the Kuantan Singingi Regency through SRAP markers. Twenty-four (24) local genotype samples were used in this study. Observational data were processed using Ms. software. Excel and (NTSYS-pc) version 2.02. The results obtained 17 fragments in Primer M, which resulted in a similarity analysis between 71% to 100%. There are two (2) groups at 75% similarity, then there are five (5) groups at 81% similarity and there are four (4) groups that have 100% similarity. The results of this study are expected to be taken into consideration in developing rice breeding strategies in the future.
PERTUMBUHAN HANJELI (Coix lacrima-jobi L.) PADA KEPADATAN POPULASI BERBEDA DI LAHAN SUB OPTIMAL Ramadhan, Nugraha; Martinsyah, Rachmad Hersi; Dwipa, Indra
Jurnal Agroekoteknologi Vol 12, No 2 (2020)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v12i2.10840

Abstract

Research was conducted in Limau Manis, Padang City of West Sumatra. Theexperimental design used was a non-factorial randomized block design. Job’s tears used in this study is a cultivar of beras. The research objective was to determine the effect of various levels of population density on job’s tears growth in sub-optimal area. The density of the population used in this study is that A1 = 62,500 plants / ha (spacing of 40 x 40 cm), A2 = population of 50,000 plants / ha (spacing of 50 x 40 cm), A3 = 40,000 plants / ha (spacing 50 x 50 cm), A4 = 33,333 plants / ha (spacing 50 x 60 cm), A5 = 28,571 plants / ha (spacing 50 x 70 cm), A6 = 25,000 plants / ha (spacing 50 x 80 cm), A7 = 22,222 plants / ha (spacing 50 x 90 cm), and A8 = 20,000 plants / ha (spacing 50 x 100 cm). The results showed that the density of the plant population that was too dense had an effect on the decline in several growth components but showed the highest average ILD value. Whereas treatment with population density that was not too high or by using spacing that was tenuous gave the best effect on the variables of plant height, number of tillers and number of leaves. Further observations are needed to determine the effect of the treatment given on theyield components.
TEKNOLOGI PENGOLAHAN TEH HERBAL DARI TANAMAN GAHARU DI KELURAHAN LAMBUNG BUKIK KOTA PADANG Benni Satria; Nilla Kristina; Afrima Sari; Indra Dwipa; Armansyah Armansyah; Syahyana Raesi; Ferry Lismanto Syaiful; Trizelia Trizelia
Jurnal Hilirisasi IPTEKS Vol 3 No 3 (2020)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v3i3.427

Abstract

The majority of Lambung Bukik Village people, Pauh Subdistrict, Padang City, make a living from farming horticultural crops, secondary crops, forest plants (Sungkai and gaharu) and raising cattle and chickens. The Sungkai Permai Farmer Group has a 2-5-year-old gaharu tree, the seeds obtained through the Elok Nagari CSR activities of PT Semen Padang. Currently, the agarwood tree has good potential through the inoculation of fungal pathogens on the agarwood tree to form economically valuable sapwood and the use of its leaves as a health drink. This activity aims to: 1). the community knows how to cultivate agarwood plants, know its benefits, and know-how to process parts of the agarwood tree, such as sapwood and leaves, into raw materials for tea drinks, 2). provide special skills for farmer groups members so that they are expected to be used as independent businesses; 3). They empower the community in utilizing empty land through the cropping pattern of aloes agroforestry with plantation crops, 4). as a form of community activity from Andalas University, especially the Faculty of Agriculture. This activity was carried out in the Sungkai Permai Farmer Group, Lambung Bukik Village, Padang City. The Sungkai Permai farmer group has acquired knowledge about gaharu cultivation and tea use through participatory methods and training in the form of demonstrations and demonstration plots by planting approximately 150 gaharu seeds as raw material for tea through an agroforestry pattern. The Sungkai Permai farmer group has acquired knowledge of using the part of gaharu to become aloe tea as a drink and health medicine from the leaves and sap of aloes. The Sungkai Permai farmer group can manage raw materials for gaharu leaves and sap derived from gaharu trees around farmers' land in Limau Manis sub-district, or other areas. They can be a productive business opportunity as tea and medicine in health drinks to improve the community's economy.
PERTUMBUHAN HANJELI (Coix lacrima-jobi L.) PADA KEPADATAN POPULASI BERBEDA DI LAHAN SUB OPTIMAL Nugraha Ramadhan; Rachmad Hersi Martinsyah; Indra Dwipa
Jurnal Agroekoteknologi Vol 12, No 2 (2020)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v12i2.11488

Abstract

Research was conducted in Limau Manis, Padang City of West Sumatra. Theexperimental design used was a non-factorial randomized block design. Job’s tears used in this study is a cultivar of beras. The research objective was to determine the effect of various levels of population density on job’s tears growth in sub-optimal area. The density of the population used in this study is that A1 = 62,500 plants / ha (spacing of 40 x 40 cm), A2 = population of 50,000 plants / ha (spacing of 50 x 40 cm), A3 = 40,000 plants / ha (spacing 50 x 50 cm), A4 = 33,333 plants / ha (spacing 50 x 60 cm), A5 = 28,571 plants / ha (spacing 50 x 70 cm), A6 = 25,000 plants / ha (spacing 50 x 80 cm), A7 = 22,222 plants / ha (spacing 50 x 90 cm), and A8 = 20,000 plants / ha (spacing 50 x 100 cm). The results showed that the density of the plant population that was too dense had an effect on the decline in several growth components but showed the highest average ILD value. Whereas treatment with population density that was not too high or by using spacing that was tenuous gave the best effect on the variables of plant height, number of tillers and number of leaves. Further observations are needed to determine the effect of the treatment given on the yield components.
INOVASI PENANAMAN BIBIT AREN UNTUK KONSERVASI DI BANTARAN SUNGAI BATANG HARI DI NAGARI SUNGAI DAREH KABUPATEN DHARMASRAYA Zahlul Ikhsan; Indra Dwipa; Yaherwandi Yaherwandi; Reflinaldon Reflinaldon; Edwin Edwin; Dewi Rezki; Irwin Mirza Umami; Siska Efendi; Wulan Kumala Sari; Dede Suhendra
Jurnal Hilirisasi IPTEKS Vol 4 No 1 (2021)
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v4i1.487

Abstract

Nagari Sungai Dareh, Pulau Punjung District, Dharmasraya Regency is an area located on the banks of the Batang Hari River. Rivers must be protected and conserved, and their functions and benefits must be improved for the health and sustainability of the ecosystem. Planting sugar palm on the river banks is one way that can be done to preserve the river. Besides being useful for conservation, sugar palm also has a high economic value. This activity aims to empower the community by 1) Conservation activities on the banks of the Batang Hari river, and 2) Introduction of sugar palm plants and increasing community knowledge and skills in sugar palm cultivation. This activity was carried out in Jorong Sungai Kilangan Nagari Sungai Dareh, Dharmasraya Regency, with lectures, discussions, and demonstrations of planting sugar palm on the banks of the river. The number of students involved was five people. The people of Nagari Sungai Dareh are very enthusiastic about listening and discussing sugar palm cultivation and the importance of river conservation. Most of the participants are very interested and will immediately plant sugar palm on their land, but some are still learning more. As a form of our hope that the planting of sugar palm on the river banks can be successful, we assist ± 200 sugar palm seeds for the people of Nagari Sungai Dareh. Community empowerment through sugar palm cultivation has been able to increase community knowledge and skills about the importance of maintaining river sustainability and the prospects and challenges of sugar palm cultivation.
Comparing the Genetic Parameters of Three Rice Varieties on Suboptimal Land Using the SRI Method Rozen, Nalwida; Kasim, Musliar; Dwipa, Indra; Hervani, Dini
Journal of Tropical Crop Science Vol 9 No 01 (2022): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.9.01.47-51

Abstract

The conversion of fertile land into industrial areas and construction development has contributed to the decline of rice production in Indonesia. Therefore, it is necessary to expand the rice fields to the sub-optimal land, i.e. lands with high levels of Fe and Al and low soil pH. One of the solutions that can potentially solve the problem is choosing varieties of rice that can adapt to the suboptimal land environment; the rice varieties can be obtained by estimating rice genetic parameters and selecting the optimal planting methods. One method that can potentially improve rice yield is “System of Rice Intensification”, or SRI method. Our study was conducted in the rice fields on suboptimal land at Pasar Ambacang, Kuranji District, Padang, Sumatra, from December 2019 to April 2020. The aims of the experiment are to determine the genetic parameters and responses of the three rice varieties to suboptimal land using the SRI method. A complete randomized design with four replications was used to set up the experiment using three varieties of rice, i.e. “Batang Piaman”, “Bujang Marantau”, and “IPB3S”. Based on the plant growth measurement and analysis of the genetic parameters, we found that the plant growth characters, particularly height and panicles length, had high heritability and genetic progression values.
PENGARUH INTRODUKSI ISOLAT RIZOBAKTERIA INDIGENUS TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KENTANG (Solanum tuberosum L.) DAN DINAMIKA POPULASI GULMA DI ALAHAN PANJANG, SUMATERA BARAT FRISKIA HANATUL QOLBY; IRAWATI CHANIAGO; INDRA DWIPA; ZURAI RESTI
Jurnal Agroteknologi Vol 11, No 1 (2020): Agustus 2020
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/ja.v11i1.9411

Abstract

Potato (Solanum tuberosum L.) is of important major crops for its carbohydrate and plays important roles to support food sovereignty along with rice, wheat, corn, and sorghum. Potato growth and yield at West Sumatra has not reached its maximum potential due to some factors including cultivation. One major important constraint in potato growing in West Sumatra is the fact that farmers use the 8th to 12th generation of potato seedlings which have a very low agronomic potential. Yet, weeds have caused another problem in the field and reduce potato yield. An experiment has been conducted at the Laboratory of Microbiology, Faculty of Agriculture, Universitas Andalas and Nagari Alahan Panjang, Subdistrict Lembah Gumanti, Solok Regency from November 2018 to March 2019. The experiment was aimed at determining the best indigenous rhizobactria isolates to increase the growth and yield of potato plants as well as weed population dynamics associated with potato plants. Six isolates of indigenous rhizobacteria and a control treatment group were tested in a completely randomised design with three replicates. The isolates were L1 S3.1, L1 S3.2, L1 S4.4, L2 S1.2, L2 S2.3, L2 S3. 2. Data were analyzed with analysis of variance and mean separation with Duncan's New Multiple Range Test (DNMRT) at 5%. Results showed that isolate L1 S4.4 was best in increasing the number of branches, number of tubers, and weight of potato yield. The isolates tested affected weed populations dynamics, prior to treatments there were 8 species of weeds found at the field i.e Bidens pilosa L., Leptochloa chinensis, Eleusine indica L., Agerathum conyzoides, Richardia sp, Galinsoga parviflora, and Sonchus arvensis. During potato growing at the field, weed species of Eleusine indica L. and Gynura divaricata dissappeared from the soil. In contrast,  Amaranthus spinosus emerged demonstrating that weed population dynamic has occurred.
Co-Authors Afrima Sari Agustian Agustian Aprisal Aprisal Armansyah Armansyah Benni Satria Bujang Rusman Chairil Ezward Dede Suhendra Dewi Rezki Edwin Edwin Erlina Rahmayuni Fajriwandi Fajriwandi Ferry Lismanto Syaiful FRISKIA HANATUL QOLBY Hervani, Dini Irawati Chaniago Irfan Suliansyah Irwin Mirza Umami KRISTINA, NILLA Martinsyah, Rachmad Hersi Meisilva Erona Sitepu Musliar Kasim Musliar Kasim Nalwida Rozen Nalwida Rozen Rachmad Hersi Martinsyah Ramadhan, Nugraha Ramadhan, Nugraha Ramadhan, Nugraha Refdinal Refdinal Reflinaldon Reflinaldon Rozen, Nalwida Siska Efendi Syahyana Raesi Syarief, Zulfadly Syarief, Zulfadly Trizelia Trizelia Winda Purnama Sari Wulan Kumala Sari Yaherwandi Yaherwandi Zahlul Ikhsan Zurai Resti