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Shelf Life of Biofilm Producing PGPR Liquid Inoculants in Different Enriched Media Composition Rahma Tia Harahap; Isnaniar Rahmatul Azizah; Diyan Herdiyantoro; Mieke Rochimi Setiawati; Tualar Simarmata
Agro Bali : Agricultural Journal Vol 6, No 2 (2023)
Publisher : Universitas Panji Sakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37637/ab.v6i2.1285

Selecting a carrier material compatible with microbes is crucial for ensuring the quality of biofertilizers. This research aimed to identify a carrier material that could sustain the population of inoculants from dryland (including Delftia tsuruhatensis strain D9, Delftia sp. strain MS2As2, and Bacillus sp.) for a specified period. After conducting the study, it was found that a formulation of 3% molasses, 3% glycerol, 1% potassium sorbate, and 1% Tween-20 enriched with 1% nutrient was the most effective carrier material in maintaining the number of live inoculant cells. This formulation was able to sustain the population of inoculants up to the twelfth week, with a total population of 21.60 × 108 CFU.mL-1 with pH value of media is 5.29, and fulfilled the main criteria for biofertilizers.

Aplikasi Pupuk Organik Azolla dan Pupuk Hayati terhadap Kandungan N Tanaman, Serapan N Tanaman, dan Hasil Tanaman Padi Sawah Organik pada Inceptisols Jatinangor Mieke Rochimi Setiawati; Diyan Herdiyantoro; Pujawati Suryatmana
Soilrens Vol 21, No 1 (2023)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v21i1.49320

The need for adequate nutrition for organic rice cultivation is very important. It is necessary to look for various sources of nutrients apart from organic fertilizers from rice straw compost and manure. Azolla water ferns and solid or liquid biofertilizers shoud be used as an alternative in the way to increase plant nutrients in organic rice cultivation in paddy fields. This experiment aims to increase the yield of lowland rice plants which are cultivated organically for the first time through the application of organic fertilizer enriched with azolla and biofertilizers in the lowland rice fields of Inceptisols Jatinangor. The experiment was carried out at the Experimental Garden, Ciparanje, it’s belong to Faculty of Agriculture, Universitas Padjadjaran, Sumedang, West Java. The design used was a Randomized Block Design (RBD) with six treatments, namely organic fertilizer, organic fertilizer + Azolla, organic fertilizer + solid biofertilizer, organic fertilizer + Azolla + solid biofertilizer, organic fertilizer + liquid biofertilizer, organic fertilizer organic + Azolla + liquid biofertilizer. Each treatment repeated four times. The experimental results showed that the application of a combination of organic fertilizers and biofertilizers had an effect on lowland rice yields but had no significant effect on plant N content and N uptake of lowland rice plants in Inceptisols Jatinangor.

Chemical and Biological Properties of Potted-Soil for Strawberry Cultivation Hindersah, Reginawanti; Kamaluddin, Nadia Nuraniya; Akustu, Masako; Herdiyantoro, Diyan
Agrikultura Vol 34, No 1 (2023): April, 2023
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v34i1.40660

Strawberries in tropical West Java are cultivated intensively in potted soil but the substrate condition received less attention. The objective of this descriptive research was to evaluate the chemical and macronutrient profile in potted-soils for strawberry cultivation, and to determine beneficial microbes’ population in root-free bulk soil and rhizosphere of potted-strawberry. The soil samples collected from 12-months and one-month-old potted strawberry; both contained Inceptisols soil order with 10 t/ha and 25 t/ha manure respectively. The proximate analysis was performed using Association of Official Analytical Chemists Method. The microbial enumeration was performed by Serial Dilution Plate Method in specific medium. The results showed that potted soils were not saline, but slightly acid, low in organic carbon and high in cation exchange capacity. The soil reactions were suitable for strawberry but the electrical conductivity was too low for strawberry growth. The potted soils have low to very low carbon to nitrogen ratio, but high in total nitrogen and very high in potential P2O5 and K2O. The population of phosphate-solubilizing bacteria, nitrogen-fixing Azotobacter, total bacteria and total fungi in old potted soil were low; but its counts were increased in manure-treated potted soil. The ratios of bulk soil to rhizosphere microbial count were only 1.0-1.25. The study verified that the doses of organic matter should be increased, while decreasing the chemical fertilizer level.

Pengaruh Kombinasi Pupuk Hayati Konsorsium cair dengan Pupuk N, P, K terhadap Populasi Azotobacter sp., Serapan N, Bobot Kering dan Hasil Selada (Lactuca sativa L.) pada Andisols Lembang Setiawati, Mieke Rochimi; Lubis, Ary Satria; Sudirja, Rija; Suryatma, Pujawati; Setiawan, Ade; Herdiyantoro, Diyan
Soilrens Vol 22, No 1 (2024)
Publisher : Dept Ilmu Tanah & Sumberdaya Lahan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/soilrens.v22i1.57234

Andisols area is potentially developed as horticulture cultivation area such as lettuce. The low number of productions of lettuce in Indonesia can be optimized by fertilization. The application of biofertilizer is expected to intensify the efficiency of inorganic fertilization through the ability of nitrogen fixation bacteria. The aim of study was evaluating the effect of a combination between liquid biofertilizer consortium with N, P, K fertilizer on N-uptake, population of Azotobacter sp., dry biomass, and yield of lettuce (Lactuca sativa L.) in Andisols. This study was done in June 2015 until September 2015 in 2 locations, Balai Besar Pelatihan Pertanian in Kayuambon, Lembang, West Java with an altitude of 2084 meters above sea level and in Soil Biology Laboratory, Soil Science Department, Universitas Padjadjaran. As treatment, seven combination dose of fertilizer A = control (without any fertilizer); B = 100% dosage recommendation of N, P, K; C = liquid biofertilizer consortium 10 L ha-1; D = liquid biofertilizer consortium 10 L ha-1 + 100% dosage recommendation of N, P, K; E = liquid biofertilizer consortium 10 L ha-1 + 75% dosage recommendation of N, P, K; F = liquid biofertilizer consortium 10 L ha-1 + 50% dosage of recommendation of N, P, K; G = liquid consortium biofertilizer 10 L ha-1 + 25% dosage recommendation of N, P, K). The research design was in the complete Randomized Block Design (RBD) with four replications. Regarding the yield performance and population of Azotobacter sp. which is better than the other treatments is a treatment with liquid biofertilizer consortium 10 L ha-1 + 50% dosage of recommendation of N, P, K. The significant positive correlation between the yeild of lettuce with dry mass is 96.8% and nitrogen uptake of 84.2%

The Potential of Azolla pinnata Powder and Compost as a Carrier-base for Improving N-Fixing and P-Solubilizing Bacteria Performance to Increase Soybean Productivity Suryatmana, Pujawati; Halimah, Ummu ‘Azizah; Kmaluddin, Nadia Nuraniya; Herdiyantoro, Diyan; Setiawati, Mieke Rochimi
Agrikultura Vol 35, No 2 (2024): Agustus, 2024
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v35i2.55096

Efektivitas inokulan Azotobacter sp. dan Bacillus sp. sering kali berkurang ketika diaplikasikan di tanah asam seperti Inceptisol, sehingga diperlukan upaya untuk meningkatkan kinerjanya dalam kondisi ini. Salah satu strategi adalah memilih bahan pembawa inokulan yang tepat seperti tepung Azolla pinnata dan kompos. Tujuan penelitian ini adalah untuk mengevaluasi kepadatan populasi inokulan, pembentukan bintil akar, berat kering akar, dan jumlah daun trifoliat pada tanaman kedelai yang diberi perlakuan tepung A. pinnata dan kompos sebagai carrier inokulan Azotobacter sp. dan Bacillus sp. Penelitian ini dilakukan pada Agustus 2022 hingga Januari 2023 di Laboratorium Biologi Tanah dan Kebun Percobaan Ciparanje, Departemen Ilmu Tanah dan Sumber Daya Lahan, Fakultas Pertanian, Universitas Padjadjaran. Penelitian menggunakan Rancanagan Acak Kelompok Faktorial dengan dua faktor yaitu faktor pertama berupa pemberian pupuk NPK dengan dosis 100% (300 kg/ha), 50% (150 kg/ha) dan 0% (0 kg/ha) dan faktor kedua adalah perlakuan inokulan kultur cair, inokulan dalam kompos, inokulan dalam tepung Azolla, inokulan dalam campuran kompos dan Azolla yang masing-masing diulang sebanyak tiga kali. Hasil penelitian menunjukkan bahwa carrier tepung Azolla dan kompos meningkatkan populasi Azotobacter spp. dan Bacillus spp. di rizosfer. Inokulan dalam campuran pembawa kompos dan tepung Azolla menghasilkan berat kering akar dan jumlah bintil tertinggi secara signifikan. Inokulasi kultur cair Azotobacter sp. dan Bacillus sp. atau inokulan padat dengan bahan pembawa tepung Azolla menghasilkan polong kedelai yang setara dengan aplikasi NPK 150 kg/ha. Aplikasi inokulan dalam tepung Azolla, kompos, atau campuran keduanya menghasilkan bobot 100 biji yang tidak berbeda nyata, namun, bobot 100 biji setara dengan perlakuan yang menggunakan dosis NPK 300 kg/ha di Inceptisol

Current status and the significance of local wisdom biofertilizer in enhancing soil health and crop productivity for sustainable agriculture: A systematic literature review Irwandhi, Irwandhi; Khumairah, Fiqriah Hanum; Sofyan, Emma Trinurani; Kamaluddin, Nadia Nuraniya; Nurbaity, Anne; Herdiyantoro, Diyan; Simarmata, Tualar
Kultivasi Vol 23, No 3 (2024): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v23i3.56018

Soil fertility is recognized as a crucial factor in supporting plant growth and productivity. The utilization of biofertilizers as environmentally friendly fertilizers is aimed at enhancing soil fertility and plant productivity. This study aims to explore the potential of local material for developing local wisdom biofertilizers (LWB) for achieving sustainable agriculture. A systematic literature review was conducted using bibliometric analysis, Preferred Reporting Items for Systematic Reviews, and Meta-Analyses (PRISMA) method, employing the Scopus search engine with the keywords "local AND wisdom AND biofertilizer" OR "biofertilizer" OR "local AND microorganism" OR "soil AND health OR crop AND productivity OR sustainable agriculture". The search yielded 704 articles, of which 11 were deemed eligible after selection. Based on the literature review, it was found that there are local materials, including fish waste, seaweed, Azolla, fruit waste, Moringa oleifera, microalga, bamboo roots, banana hump, golden snail, mangrove leaves, fruit, and vegetable waste that can be used as raw materials for LWB to improve soil health, plant growth, and productivity. The development of LWB as a new fertilizer technology faces challenges such as lack of regulations, low public trust, limited farmer awareness, weak promotion, and raw material shortages. Further research is needed to intensively study and enhance the effectiveness of LWB through enrichment using beneficial microorganisms.

Enhancing microbial population and biomass of water spinach grown in tailing and inceptisols by manure amendment Hindersah, Reginawanti; Suryatmana, Pujawati; Herdiyantoro, Diyan; Hamdani, Jajang Sauman
Jurnal AGRO Vol 11, No 2 (2024)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/39611

The impact of tailings accumulated on agricultural land is the loss of soil profile and decreased soil quality, making plants difficult to grow. This study aimed to observe the effect of cow dung manure (CM) doses to gold mine tailings on total fungal and bacterial populations of soil surrounding roots and water spinach biomass and to analyze the correlation between fungal and bacterial populations with water spinach growth parameters. The experiment was designed in a randomized block design with five treatments and five replications. The treatments included without CM (control) and 5, 10, 15, and 20% of CM in tailing. Similar treatments were added to plants grown in mineral soil, i.e. Inceptisols. The results determined the retarded plant growth in tailing compared to that in Inceptisols. The plant grown in tailing was more responsive to manure amendment. The CM increased total fungal and bacterial populations in the soil around the roots, plant height, leaf number, stem thickness, wet weight, and dry weight of intact plants. Applying 5% of CM caused better growth of water spinach than other treatments. Total fungal and bacterial populations were strongly correlated with water spinach height and dry weight. ABSTRAK Dampak negatif penumpukan tailing di lahan pertanian adalah hilangnya profil tanah dan penurunan kualitas tanah sehingga tanaman sulit tumbuh. Penelitian ini bertujuan untuk mengobservasi pengaruh pemberian dosis pupuk kotoran sapi (PKS) pada tailing tambang emas terhadap populasi jamur dan bakteri total biomassa kangkung darat (Ipomoea reptans (L.) Poir.) serta menganalisis korelasi antara populasi jamur dan bakteri di tanah sekitar perakaran dengan parameter pertumbuhan kangkung. Percobaan pot di rumah kaca disusun dalam rancangan acak kelompok dengan lima perlakuan dan lima ulangan. Perlakuan percobaan adalah tanpa dan dengan penambahan 5, 10, 15 dan 20% PKS ke dalam tailing. Perlakuan yang sama diberikan pada tanaman kangkung dengan tanah Inceptisol. Hasil percobaan menunjukkan bahwa pertumbuhan kangkung di tailing terhambat dibandingkan di tanah Inceptisols, tetapi tanaman di tailing lebih responsif terhadap aplikasi PKS. Pupuk kotoran sapi mampu meningkatkan populasi jamur dan bakteri total di sekitar perakaran, tinggi tanaman, jumlah daun, ketebalan batang, bobot basah serta bobot kering tanaman di tailing. Pemberian 5% PKS lebih meningkatkan pertumbuhan tanaman kangkung dibandingkan dengan perlakuan lainnya. Populasi jamur dan bakteri masing-masing berkorelasi positif dengan hubungan yang sangat kuat dengan bobot kering serta tinggi tanaman kangkung. Percobaan ini menjelaskan bahwa bahan organik penting untuk memperbaiki kualitas tailing dan pertumbuhan tanaman.

AZOTOBACTER AND CHEMICAL FERTILIZER FOR IMPROVING GROUNDNUT YIELD IN FIELD EXPERIMENT Reginawanti Hindersah; Agung Muhammad Yusuf; Dewikusuma Ikhsani Adhiningtyas; Diyan Herdiyantoro; Oviyanti Mulyani; Pujawati Suryatmana
Jurnal Agrotek Tropika Vol 12, No 4 (2024): JURNAL AGROTEK TROPIKA VOL 12, NOVEMBER 2024
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v12i4.8395

Biofertilizer inoculation is a novel and sustainable approach for reducing chemical fertilizer dose. The nitrogen-fixing Azotobacter is a prominent rhizobacteria used in biofertilizer formulation. A field experiment was aimed to observe the N availability, N uptake, nodulation, and growth and yield of groundnuts grown with A. chroococcum liquid inoculant and reduced dose of NPK fertilizer. The field experiment was arranged in a Randomized Block Design to test eight combination treatments of A. chroococcum inoculant doses (2 and 3 L/ha) and NPK fertilizer doses (75, 150 and 300 kg/ha). Azotobacter and NPK application did not affect plant height at two and three weeks after sowing. Groundnuts treated with 2 L/ha Azotobacter combined with 150 kg/ha NPK had more NO3- in soil, N uptake, and root dry weight; its pod number and weight per plot increased 110% and 40% than that in plot received 2L/ha Azotobacter and 300 kg/ha NPK respectively. The experiment found that A. chroococcum shall replace part of NPK fertilizer for growing groundnut in Inceptisols soil order.

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 2018
Publisher : Universitas Padjadjaran

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 (Ultisol® 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.

Enhancing microbial population and biomass of water spinach grown in tailing and inceptisols by manure amendment Hindersah, Reginawanti; Suryatmana, Pujawati; Herdiyantoro, Diyan; Hamdani, Jajang Sauman
Jurnal AGRO Vol. 11 No. 2 (2024)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/39611

The impact of tailings accumulated on agricultural land is the loss of soil profile and decreased soil quality, making plants difficult to grow. This study aimed to observe the effect of cow dung manure (CM) doses to gold mine tailings on total fungal and bacterial populations of soil surrounding roots and water spinach biomass and to analyze the correlation between fungal and bacterial populations with water spinach growth parameters. The experiment was designed in a randomized block design with five treatments and five replications. The treatments included without CM (control) and 5, 10, 15, and 20% of CM in tailing. Similar treatments were added to plants grown in mineral soil, i.e. Inceptisols. The results determined the retarded plant growth in tailing compared to that in Inceptisols. The plant grown in tailing was more responsive to manure amendment. The CM increased total fungal and bacterial populations in the soil around the roots, plant height, leaf number, stem thickness, wet weight, and dry weight of intact plants. Applying 5% of CM caused better growth of water spinach than other treatments. Total fungal and bacterial populations were strongly correlated with water spinach height and dry weight. ABSTRAK Dampak negatif penumpukan tailing di lahan pertanian adalah hilangnya profil tanah dan penurunan kualitas tanah sehingga tanaman sulit tumbuh. Penelitian ini bertujuan untuk mengobservasi pengaruh pemberian dosis pupuk kotoran sapi (PKS) pada tailing tambang emas terhadap populasi jamur dan bakteri total biomassa kangkung darat (Ipomoea reptans (L.) Poir.) serta menganalisis korelasi antara populasi jamur dan bakteri di tanah sekitar perakaran dengan parameter pertumbuhan kangkung. Percobaan pot di rumah kaca disusun dalam rancangan acak kelompok dengan lima perlakuan dan lima ulangan. Perlakuan percobaan adalah tanpa dan dengan penambahan 5, 10, 15 dan 20% PKS ke dalam tailing. Perlakuan yang sama diberikan pada tanaman kangkung dengan tanah Inceptisol. Hasil percobaan menunjukkan bahwa pertumbuhan kangkung di tailing terhambat dibandingkan di tanah Inceptisols, tetapi tanaman di tailing lebih responsif terhadap aplikasi PKS. Pupuk kotoran sapi mampu meningkatkan populasi jamur dan bakteri total di sekitar perakaran, tinggi tanaman, jumlah daun, ketebalan batang, bobot basah serta bobot kering tanaman di tailing. Pemberian 5% PKS lebih meningkatkan pertumbuhan tanaman kangkung dibandingkan dengan perlakuan lainnya. Populasi jamur dan bakteri masing-masing berkorelasi positif dengan hubungan yang sangat kuat dengan bobot kering serta tinggi tanaman kangkung. Percobaan ini menjelaskan bahwa bahan organik penting untuk memperbaiki kualitas tailing dan pertumbuhan tanaman.

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