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All Journal Jurnal Solum Agrimas : Jurnal Pengabdian Masyarakat Bidang Pertanian

Emalinda, Oktanis

Dosen Jurusan Tanah Fak. Pertanian Universitas Andalas

Author-ID : 657781

Agriculture, Biological Sciences & Forestry Environmental Science Other

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RHIZOBAKTERIA PENGHASIL FITOHORMON IAA PADA RHIZOSFIR TUMBUHAN SEMAK KARAMUNTING, TITONIA, DAN TANAMAN PANGAN Agustian Agustian; Nuriyani Nuriyani; Lusi Maira; Oktanis Emalinda
Jurnal Solum Vol 7, No 1 (2010): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

Rhizobacteria from various research results have shown an important role in producing organic compounds (phytohormone) which can affect plant physiological processes even in low concentrations. This research aimed to study the production of Indole Acetic Acid (IAA) in several plants rhizosphere, to calculate the rhizobacteria population that able to produce and synthesize IAA and to isolate these rhizobacteria from several rhizospheres of cultivated plants (maize and peanut) and bush plant i.e. karamunting (Rhodomyrtus tomentosa) and titonia (Tithonia diversifolia). All plants and crops were obtained from experimental station Faculty of Agriculture Andalas University. Further research is conducted in Soil Biology Laboratory Faculty of Agriculture. Experimental design in this study was not used but the data obtained from 3 replications tested by T test at 5% level and if it was significantly different it would be followed by further HSD tests at 5% level. Highest content of IAA was found in the peanut crop (67.30 ppm), followed by maize (53.61 ppm) and 28.53 ppm for titonia. Whereas the lowest content of IAA was found in karamunting rhizosphere, it was 22.29 ppm. The highest amount of rhizobacteria was obtained from peanut rhizosphere followed by maize and titonia i.e 18.28, 12.08 and 7.87% of the total population, respectively. There was no IAA producing rhizobacteria population was found in karamunting rhizosphere. Based on the results of the ability of the test to produce IAA in the King’s B liquid medium at low pH (pH 4.0), the leading isolates were obtained in each rhizosphere, namely: J.2b and J.3b isolates from maize rhizosphere; Kc.1b, Kc.2b and Kc.3b from peanut isolates, and Ti.3c isolates from titonia rhizosphere.Key words : Rhizobacteria, IAA, Rhodomyrtus tomentosa, Tithonia diversifolia, peanut and maize

SIFAT FISIKOKIMIA LAHAN PERTANIAN MONOKULTUR PADA BEBERAPA KELAS LERENG DI DAERAH UTARA KAKI GUNUNG TALANG Junaidi Junaidi; Mimien Harianti; Oktanis Emalinda; Herviyanti Herviyanti; Azizah R
Jurnal Solum Vol 18, No 1 (2021)
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

The area at the foot of Mount Talang is one of the areas that excellent in agriculture, especially the cultivation of horticultural crops. In the northern area with steep slope conditions, the local community applies an intensive monoculture cropping system, this will accelerate land degradation in the long term. This study aims to examine the physicochemical properties of monoculture agricultural land in the northern foothills of Mount Talang on several slopes. This research was conducted with a survey method, soil sampling was carried out by means of purposive random sampling, on monoculture agricultural land on slopes > 45%, 25-45%, 15-25%, and 8-15% and forest as control, at a depth of 0 -20cm and 20-40cm. The results showed that the soil texture that dominates at the forest and monoculture agricultural land are dusty loam. Soil water content increases with increasing soil layer depth, soil water content in monocultures 25-45% (73.72%) is the highest. Soil volume weight ranging from 0.4-0.6 g / cm3 has the same tendency at both soil depths. The total pore space of forest land and monoculture agricultural land is a large average of 75% with high criteria. The highest soil organic C content was found in monoculture agricultural land with a slope of >45%. The pH value of H2O for all land uses was 5.15-5.29 and the pH for KCl was 4.5-5.2 for acid criteria. The cation exchange capacity was above 40 me/100g (very high criteria), the total N content was 0.8-1.6% with very high criteria, too. Based on the researchs data, the physicochemical properties of monoculture agricultural land on several slope classes matched the physiochemical conditions of the forest. The potential for land degradation is still minimal even though it is on the upper slopes of the foot of Mount Talang. However, monoculture farming while maintaining soil organic matter content must remain a priority for agricultural land management in this area.Key words: monoculture land, forest, slope, North area of foot Mount Talang

PERUBAHAN HARA DAN MIKROORGANISME PADA ULTISOL AKIBAT KASCING YANG BERBEDA Oktanis Emalinda; Eti Farda Husin; Dina Puspita Rini
Jurnal Solum Vol 2, No 2 (2005): Jurnal SOLUM
Publisher : Jurusan Tanah Fakultas Pertanian Universitas Andalas

This research was conducted in Soil Drying Room at Faculty of Agriculture Andalas University. Analysed in Soil Biology, Soil Chemic and Plant test and Disease Laboratories from August 2006 to February 2007. Aim of this research is to know the effect of substrate of vermicompost on population of soil microorganism on Ultisol. This experiment were designed on Complete Randomized Block Design in three treatment and three replicate. The treatment were different substrate of vermicompost, consisted of : without vermicompost, 10 ton/ha vermicompost with rice strow substrate and, 10 ton/ha vermicompost with dust wood. The result was showed, that vermicompost with rice strow could increase the growth rate of microorganism 320,14 % of fungi and 123,3 % bacteri. Used that this vermicompost can also increase soil nutritions (0,22 %, variable P 0,7 %; K-dd 0,04 me/100 g, Ca-dd 0,13 me/100 g and Mg-dd 0,08 me/100. Key word : vermicompost

Penerapan MOB 6 untuk Mengurangi Emisi Gas Rumah Kaca dari Kotoran Ternak di Kecamatan Kuranji, Padang Mimien Harianti; Gusnidar; Aprisal; Lusi Maira; Gusmini; Oktanis Emalinda; Nofrita Sandi; Nurul Hijri; Retno Meitasari; Zuldadan Naspendra
Agrimas : Jurnal Pengabdian Masyarakat Bidang Pertanian Vol. 5 No. 1 (2026): APRIL
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/agrimas.v5i1.69

Kotoran ternak yang tidak dikelola dengan baik dapat melepaskan gas rumah kaca (GRK), khususnya metana (CH₄) dan dinitrogen oksida (N₂O), yang berkontribusi terhadap pencemaran lingkungan dan perubahan iklim. Peternak skala kecil seringkali kekurangan teknologi tepat guna untuk mempercepat penguraian pupuk kandang sekaligus meminimalkan emisi. Program pengabdian masyarakat ini memperkenalkan MOB 6, konsorsium mikroorganisme yang dikembangkan secara lokal, untuk mendukung pengelolaan pupuk kandang ramah lingkungan di Kelompok Peternak Rimbo Tarok Jaya, Kecamatan Kuranji, Kota Padang. Program ini dilaksanakan melalui pendekatan partisipatif yang terdiri dari (1) koordinasi awal dengan kelompok tani, (2) sesi edukasi tentang emisi GRK dan manfaat MOB 6, (3) demonstrasi produksi MOB 6, dan (4) penerapan langsung MOB 6 pada kotoran sapi segar diikuti dengan praktik pengomposan terpandu. Kegiatan tersebut meningkatkan pengetahuan dan keterampilan teknis petani dalam menyiapkan dan menerapkan MOB 6, mengurangi bau pupuk kandang, dan mendorong pengomposan lebih cepat. Program ini menunjukkan bahwa teknologi MOB 6 dapat berfungsi sebagai strategi praktis dan berbiaya rendah untuk meningkatkan pengelolaan limbah ternak yang berkelanjutan sekaligus mendukung mitigasi emisi gas rumah kaca di tingkat masyarakat.

Co-Authors . Gusmini . Herviyanti Agustian Agustian Aprisal Aprisal, Aprisal Azizah R Dina Puspita Rini Eti Farda Husin Gusnidar, G Junaidi Junaidi Lusi Maira Mimien Harianti Nofrita Sandi Nuriyani Nuriyani Nurul Hijri Retno Meitasari Zuldadan Naspendra

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