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All Journal Jurnal Biologi Udayana Agrikultura Jurnal Agroekoteknologi Padjadjaran Journal of Dentistry Kultivasi Jurnal Teknologi Pertanian Andalas Soil REns

DIYAN HERDIYANTORO

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Author-ID : 280017

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Public Health

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Articles

Dental alginate impression waste as additional fertiliser for plant yields and soil quality Frahdian, Tommy; Hasratiningsih, Zulia; Karlina, Elin; Herdiyantoro, Diyan; Takarini, Veni
Padjadjaran Journal of Dentistry Vol 30, No 1 (2018): March
Publisher : Faculty of Dentistry Universitas Padjadjaran, Indonesia

Introduction: Dental alginate impression material is the most common material used in dentistry. However, dental alginate waste (DAW) is one of the causes of the increasing number of dentistry and medicinal wastes. This research was aimed to discover the effect of dental alginate impression waste as additional fertiliser on the plant yields by determining the weight of cauliflower crop, and towards the quality of soil by determining the soil pH (UltisolÂ® Jatinangor). Methods: The experiment was using a randomised block design with 4 treatments and 7 times replications. The treatment consisted of A0 (0% DAW as control), A1 (0.01% DAW), A2 (0.1% DAW), and A3 (1% DAW). Results: The weight of cauliflower after addition of DAW in group A0 was 72.78; A1 was 139.82); A2 was 130.69; and A3 was 60.72). While the pH soil in group A0 was 5.92; A1 was 6.07; A2 was 6.02; and A3 was 6.26. The treatment in the A1 and A2 groups were found as the significant doses that able to increase the cauliflower weight for consecutively 1.92 times and 1.80 times compared to the control group, while on the soil quality improvement (soil pH), the addition of DAW was not significantly affected. Conclusion: It can be concluded that the addition of dental alginate waste at the dose of 0.01% and 0.1% increased the weight of cauliflower, but has no significant effect on the soil quality.

engaruh Dosis Pupuk NPK dan Ordo Tanah terhadap Kdd, Serapan K, dan Hasil Bibit Kentang (Solanum tuberosum L.) yang Diinokulasi Fungi Mikoriza Arbuskula dan Mycorrhiza Helper Bacteria Windy Amorita; Anne Nurbaity; Diyan Herdiyantoro
Soilrens Vol 14, No 2 (2016)
Publisher : Fakultas Pertanian Universitas Padjadjaran

The productivity of potatoes in Indonesia is relatively low and unstable caused by unsuitable enviromental and soil conditions and bad cultivation system. This research was conducted to study the effect of NPK fertilizer dosages and soil order to soluble K, K Uptake, and yield of seed potatoes (Solanum tuberosum L.). The experiment design used a factorial randomized block design with two factors and three replication. The first factor was NPK fertilizer dosages with five levels (0, 25, 50, 75, 100% recomendation dosages) and the second factor was soil orders with two levels (Andisols and Inceptisols). The results of experiment showed that the interaction effect between NPK fertilizer dosages and soil orders had significantly effect to soluble K and K Uptake. There were independent effect of NPK dosages to diameter of potatoes tuber and independent effect of soils order to yield of seed potatoes. Andisols with 25% NPK and Inceptisols with 50% NPK were the best combination treatment to increase soluble K while treatment Inceptisols with 25% NPK was the best combination treatment to increase K Uptake. Dosages of 25% NPK was the best treatment to increase diameter of potatoes tuber while Inceptisols was the best treatment to increase yield of seed potatoes.Keywords : NPK Fertilizer Dosages, Andisols, Inceptisols, Potassium, Potatoes

Kemampuan Kompos Plus dalam Menekan Penyakit layu Fusarium (Fusarium oxysporum f.sp. lycopersici) pada Tanaman Tomat Noor Istifadah; Toto Sunarto; Dian E. Kkartiwa; Diyan Herdiyantoro
Agrikultura Vol 19, No 1 (2008): April, 2008
Publisher : Fakultas Pertanian Universitas Padjadjaran

Penyakit layu fusarium merupakan salah satu kendala dalam budidaya tanaman tomat. Salah satu cara pengendalian penyakit ramah lingkungan yang banyak dikembangkan adalah pengendalian secara biologi (biokontrol). Artikel ini membahas penelitian yang menguji waktu aplikasi dan dosis kompos plus (formulasi campuran jamur antagonis Trychoderma sp., paecilomyces fumosoroseus, dan jamur endofit Papulaspora sp. dalam kompos) yang efektif menekan penyakit layu fusarium pada tanaman tomat. Hasil penelitian menunjukkan bahwa kompos plus yang diaplikasikan pada medium persemaian (1:2, v/v) dan pindah tanam sebanyak 30 g atau 40 g per lubang tanam atau diaplikasikan pada saat pindah tanam saja sebanyak 40 g per lubang tanam, dapat menekan gejala internal penyakit layu fusarium sebesar 77,3 — 87,9%.

PEMANFAATAN BAHAN ORGANIK SEBAGAI BAHAN PEMBAWA INOKULAN FUNGI MIKORIZA ARBUSKULA ANNE NURBAITY; DIYAN HERDIYANTORO; OVIYANTI MULYANI
Jurnal Biologi Udayana Vol 13 No 1 (2009): JURNAL BIOLOGI
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.487 KB)

Arbuscular Mycorrhizal Fungi (AMF) is known as one type of biofertilizer. The carrier for this biofertilizer is usually made from inorganic material such as zeolite. Currently, it is important to find the alternative materials that can be used as biofertilizers’ carrier due to the need of lower cost and easily available, such organic matter. Rice straw and husk are some of the organic matter sources that can be used as a carrier of AMF. A glass house experiment was conducted to determine the effectiveness of different type of organic matter as a carrier of AMF’s inoculum. The experiment was arranged in factorial randomized block design with two factors, i.e. type of organic matter (zeolite as a control, straw, burnt-rice’s husk and combination of straw and rice husk 50/50 v/v) and type of different hosts of AMF’s (Jatropha sp. and Sorghum sp.). The results showed that application of burnt-rice’s husk was better carrier of AMF inoculum instead of straw or combination of straw and burnt-rice’s husk. The quality of AMF inoculum with burnt-rice’s husk as a carrier was as good as the control inoculum that used zeolite, in terms of the number of spores, the percentage of root colonization, root length colonized and root fresh weight. In summary, burnt-rice’s husk has a good potential carrier of AMF biofertilizer.

KARAKTERISTIK PERTUMBUHAN DAN WAKTU GENERASI ISOLAT Azotobacter sp. DAN BAKTERI ENDOFITIK ASAL EKOSISTEM LAHAN SAWAH Mieke Rochimi Setiawati; Pujawati Suryatmana; Diyan Herdiyantoro; Zahra Ilmiyati
Jurnal Agroekoteknologi Vol 6, No 1 (2014)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Azotobacter sp. and N2-fixation endophytic bacteria are microbes that play a role in fixation the N2 from the free air and helps supply of N to plants and can make efficient use of N derived from inorganic fertilizer. N2-fixation microbes utilization in rice fields can reduce the cost of production of rice plants. By studying the characteristics of the two types of beneficial bacteria that is expected to be engineered to enhance the role of these bacteria contribute in supplying N to rice crops. The method used in this study is exploratory and observe the characteristics of growth and generation time of bacteria for 72 hours. The results of this study indicate that the bacterial isolates of Azotobacter sp-1 has the highest population in 48 hours with a total population of 1.58 x107 cfu ml-1 , whereas bacteria Azotobacter sp-2 has the highest population in 60 hours with a total population of 3.12 x106 cfu ml-1 . Both N2-fixation endophytic bacteria populations reached the highest peak in the 60th hour with a total population of N2-fixation endophytic bacteria-1 at 1.12 x 108 cfu ml-1 of N2-fixation endophytic bacteria-2 of 9.4 x 107 cfu ml-1 of both isolates endophytic bacteria showed a similar growth pattern. Azotobacter sp. isolates from rhizosfir of the rice plant have a difference generation time, while the two isolates of N2-fixation endophytic bacteria from tissue of rice plants having the same generation time. Isolates of Azotobacter sp.-1 had the fastest of generation time, capable of generating new cells every 158.66 minutes or every 2.64 hours.

RETARDED GROWTH OF LOWLAND RICE IN SALINE SOIL INOCULATED WITH NITROGEN-FIXER AZOTOBACTER Reginawanti Hindersah; Alia Halimatusy; Benny Joy; Mieke Rochimi Setiawati; Diyan Herdiyantoro
Jurnal Agroekoteknologi Vol 12, No 1 (2020)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v12i1.8782

Low-land rice (Oryza sativa L.) cultivation in saline soils face some constraints include nitrogen availability. Saline-resistant nitrogen fixing bacteria Azotobacter are expected to increase supply nitrogen in saline soils. The objectives of the study were to determine the effect of liquid inoculant concentration of two Azotobacter isolates on early vegetative growth of lowland rice grown in potted saline soil. The greenhouse trial design was a randomized block design with seven treatments and four replications. The treatments were combination of isolates and Azotobacter liquid inoculant concentrations in single and mixed inoculation. The results showed that all plants experienced chlorosis and stunt due to high Electrical Conductivity. Inoculation of different isolates and concentrations did not influence the growth of lowland rice in soil with high EC at the end of experiment. Therefore, neither isolates nor concentration of Azotobacter could improve retarded-growth of lowland rice in saline soil.

PENGARUH PUPUK HAYATI DAN DOSIS AZOTOBACTER SP. DALAM FITOREMEDIASI MENGGUNAKAN TANAMAN RAMI (BOEHMERIA NIVEA L. GAUD) PADA TANAH TERCEMAR HIDROKARBON MINYAK BUMI Gea Anggun Pratiwi; Diyan Herdiyantoro; Pudjawati Suryatmana
Jurnal Teknologi Pertanian Andalas Vol 22, No 1 (2018)
Publisher : Universitas Andalas

Phytoremediation in soil contaminated with petroleum hydrocarbon is a technology to remediate contaminant using plant as nutrient availability facilitator for degrading microbials in the rhizosphere. Phytoremediation can be promoted by biofertilizers containing nitrogen fixer, phosphate solubilizer, and mychorrizal for improving soil fertility, also Azotobacter sp. which produces biosurfactant. The purpose of this research was to determine the effects of biofertilizers and doses of Azotobacter sp. on enhancing of petroleum hydrocarbon biodegradation efficiency, nitrogen fixing bacteria and phosphate solubilizing bacteria population, and total chlorophyll content in ramie leaves. This research was carried out from September 2016 to April 2017 at Laboratory of Soil Biology, Laboratory of Soil Fertility and Plant Nutrition, also Greenhouse and Field Station Faculty of Agriculture Universitas Padjadjaran. This research used factorial randomized complete block design with two factors consisted of biofertilizers (control, nitrogen fixing bacteria, phosphate solubilizing bacteria, phosphate solubilizing fungi, mychorrizal, and biofertilizer consortium) and doses of Azotobacter sp. (control, 1%, and 2%). The results of experiment showed there was an interaction effect between biofertilizer of phosphate solubilizing fungi and 2% dose of Azotobacter sp. on the enhancement of total chlorophyll content in ramie leaves.

Potential use of PGPR based biofertilizer for improving the nutrient availability in soil and agronomic efficiency of upland rice Rahma Tia Harahap; Diyan Herdiyantoro; Mieke Rochimi Setiawati; Isna Niar Rahmatul Azizah; Tualar Simarmata
Kultivasi Vol 21, No 3 (2022): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v21i3.40061

AbstractPresent study aimed to perform literature review to investigate the current status and potential use of plant growth promoting rhizobacteria (PGPR) for enhancing the soil plant’s health, plant growth and productivity in sustainable ways. The Systematic Literature Review (SLR) methods was applied according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) on published scientific literature from 2012-2022. Results revealed that genus diversity of PGPR (Bacillus sp., Serratia sp., Streptomyces sp., Pseudomonas sp., and Burkholderia sp.) produce siderophore and phytohormones such as indole-3-acetic acid (IAA), gibberellin (GAs), auxin, and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity, organic acids, biocontrol agent that contribute to the improvement of nutrient bioavailability (nitrogen fixing, phosphate solubilizing and Fe-uptake). The growth character of rice inoculated with biofertilizer and combined with 50% inorganic fertilizer produced no significant difference with pots that received 100% inorganic fertilizer. These results concluded that PGPR that produced phytohormone and siderophore could be developed as a potential bioagent or biofertilizer to improve the growth character and yield of upland rice (Oryza sativa L.) in dry environmental conditions.Keywords: PGPR producing phytohormone and siderophore, N2-fixer, Biofertilizer, Systematic review AbstrakKajian tinjauan pustaka ini dilakukan untuk menyelidiki status saat ini dan potensi penggunaan rizobakteri pemacu pertumbuhan tanaman (PGPR) untuk meningkatkan kesehatan tanah, pertumbuhan tanaman, dan produktivitas secara berkelanjutan. Metode Systematic Literature Review (SLR) diterapkan sesuai dengan Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) pada literatur ilmiah yang diterbitkan dari 2012-2022. Mesin pencari Google Scholar dan ScienceDirect dengan kata kunci yang tepat digunakan untuk memilih dan mengumpulkan jurnal ilmiah yang terindeks bereputasi dan digunakan sebagai referensi utama database. Hasil penelitian menunjukkan bahwa keragaman genus PGPR (Bacillus sp., Serratia sp., Streptomyces sp., Pseudomonas sp., dan Burkholderia sp.) menghasilkan siderophore dan memproduksi phytohormon seperti indole-3-acetic acid (IAA), giberelin (GAs), auksin, dan 1-aminocyclopropane-1-carboxylic acid (ACC) aktivitas deaminase, asam organik, agen biokontrol yang berkontribusi pada peningkatan bioavailabilitas nutrisi (pengikatan nitrogen, pelarutan fosfat, dan penyerapan Fe). Karakter tumbuh padi yang diinokulasi pupuk hayati dan dikombinasikan dengan pupuk kimia dosis 50% menghasilkan perbedaan yang tidak nyata dengan pot yang menerima pupuk anorganik 100%. Hasil ini menyimpulkan bahwa PGPR penghasil pitohormon dan siderophore dapat dikembangkan sebagai bioagent atau pupuk hayati yang potensial untuk meningkatkan karakter tumbuh dan hasil padi (Oryza sativa L.) gogo pada kondisi lingkungan yang kering.Keywords: PGPR produksi fitohormon dan siderofor, penambat-N2-fixer, biofertilizer, Systematic review

Pengaruh Pupuk Hayati dan Briket Amelioran terhadap Pertumbuhan Tanaman Padi pada Tanah Salin Mieke Rochimi Setiawati; Syifa Nabila Kurnia; Pirda Nurhopipah; Anas Ramdhani; Pujawati Suryatmana; Diyan Herdiyantoro; Tualar Simarmata; Betty Natalie Fitriatin
Jurnal Agroekoteknologi Vol 15, No 1 (2023)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v15i1.19763

Utilization of saline land as an effort to increase rice productivity is still constrained by the adverse effects of salinity stress. The solution to this effort can be done by utilizing PGPR biofertilizers and applying ameliorant briquettes. The purpose of this study was to evaluate the effect of using biofertilizers and ameliorant briquettes on saline soils with various levels of salinity on the growth of rice plants. This research was conducted at the Ciparanje Jatinangor screen house from September 2022 to January 2023. The research design used was a randomized block design with 12 treatments and 3 replications. The treatment applied was PGPR biofertilizer, ameliorant briquettes, and their combination on saline soil 4 and 8 dS m-1 compared to control (non-saline soil). The results showed that PGPR biofertilizer increased the height of rice plants on saline soils 4 and 8 dS m-1 7 DAP. At 14 DAP, PGPR biofertilizer, ameliorant briquettes, and their combinations did not increase rice plant height, root length and volume, wet weight, and dry weight of rice plants, although the application of biofertilizers, ameliorant briquettes, and their combinations tended to increase wet weight and dry weight of rice plant compared to soil with the same salinity without biofertilizers and ameliorant briquettes.

Co-Authors Alia Halimatusy Anas Ramdhani Anne Nurbaity Benny Joy Betty Natalie Fitriatin Dian E. Kkartiwa Elin Karlina Frahdian, Tommy Gea Anggun Pratiwi Isna Niar Rahmatul Azizah Mieke Rochimi Setiawati Mieke Rochimi Setiawati Mieke Rochimi Setiawati Noor Istifadah Oviyanti Mulyani Pirda Nurhopipah Pudjawati Suryatmana Pujawati Suryatmana Rahma Tia Harahap Reginawanti Hindersah Syifa Nabila Kurnia Toto Sunarto Tualar Simarmata Veni Takarini Windy Amorita Zahra Ilmiyati Zulia Hasratiningsih, Zulia

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