The ability of potassium solubilizing rhizo-bacteria isolated from maize rhizosphere for microbial fertilizer

Herdiyantoro, Diyan; Setiawati, Mieke Rochimi; Simarmata, Tualar; Nurlaeny, Nenny; Joy, Benny; Hamdani, Jajang Sauman; Handayani, Iin

doi:10.1088/1755-1315/205/1/012011

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…The best H-PGPR isolates were selected using simple scoring and ranking methods based on plant height, root length, and dry weight ( Herdiyantoro et al, 2018 ). The rules in the simple scoring and ranking method were as follows: (i) the lowest plant height was given a score of 1, the higher was given a score of 2 and so forth; (ii) the lowest root length was given a score of 1, the higher was given a score of 2 and so forth; (iii) the lowest plant dry weight was given a score of 1, the higher was given a score of 2 and so forth; (iv) all scores were summed up, and ranking was done based on the highest of the total score; (v) the highest of the total score was rank 1, the lower of the total score ranked 2 and so forth.…”

Section: Resultsmentioning

confidence: 99%

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

et al. 2022

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Salinity is one of the most damaging abiotic stresses due to climate change impacts that affect the growth and yield of crops, especially in lowland rice fields and coastal areas. This research aimed to isolate potential halotolerant plant growth-promoting rhizobacteria from different rhizo-microbiome and use them as effective bioinoculants to improve rice growth under salinity stress conditions. Bioassay using rice seedlings was performed in a randomized block design consisting of 16 treatments (control and 15 bacterial isolates) with three replications. Results revealed that isolates S3, S5, and S6 gave higher shoot height, root length, and plant dry weight compared with control (without isolates). Based on molecular characteristics, isolates S3 and S5 were identified as Pseudomonas stutzeri and Klebsiella pneumonia. These isolates were able to promote rice growth under salinity stress conditions as halotolerant plant growth-promoting rhizobacteria. These three potent isolates were found to produce indole-3-acetic acid and nitrogenase.

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Section: Resultsmentioning

confidence: 99%

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

et al. 2022

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“…Dua puluh lima isolat bakteri pelarut kalium (BPK) telah diisolasi dari rizosfer tanaman jagung pada Inceptisols di Jatinangor (Herdiyantoro et al, 2018a). Hasil seleksi terhadap isolat-isolat BPK mendapatkan tiga isolat BPK terpilih yang mempunyai aktivitas tinggi dalam melarutkan mineral Kfelspar sebagai sumber kalium dalam tanah (Herdiyantoro et al, 2018b). Ketiga isolat BPK terpilih tersebut merupakan basis dalam formulasi pupuk hayati pelarut kalium sebagai fasilitator ketersediaan kalium bagi tanaman.…”

Section: Pendahuluanunclassified

“…Bahan yang digunakan antara lain tiga isolat BPK terpilih, yaitu: BPK-DHJ3-3150(17) (Burkholderia cenocepacia), BPK-DHJ1-4125(2) (Streptomyces pseudovenezuelae), dan BPK-DHJ2-5250( 16) (Klebsiella sp.) (Herdiyantoro, 2018b); media nutrient broth (NB); dan bibit tanaman tembakau (Nicotiana tobacum) yang diperoleh dari petani tembakau di Desa Pasigaran, Kecamatan Tanjungsari, Kabupaten Sumedang. Alat yang digunakan antara lain peralatan gelas untuk analisis mikrobiologis, shaker, laminar air flow, spektrofotometer, alat suntik (syringe) dengan diameter jarum 0,4 mm, dan kamera digital.…”

Section: Metodologiunclassified

Reaksi Hipersensitif Daun Tembakau oleh Isolat Bakteri Pelarut Kalium pada Praformulasi Pupuk Hayati

2023

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The fruitfulness of biofertilizer application in increasing plant growth and yield is when the formulation uses selected microbial isolates that do not cause disease to plants. Hypersensitivity test is carried out to ensure that the microbial isolates used in the formulation of biofertilizer are not pathogenic to plants. The purpose of this study was to determine the pathogenicity of three selected potassium solubilizing bacteria (KSB) isolates (BPK-DHJ3-3150[17], BPK-DHJ1-4125[2], and BPKDHJ2-5250[16]) isolated from the maize plant rhizosphere on Inceptisols Jatinangor. The research was conducted using a qualitative experimental method that obtained data in the form of visual photos. The three selected KSB isolates were inoculated on tobacco leaves and observed for necrosis symptoms. The experimental results showed that the three selected KSB isolates did not cause a positive hypersensitivity reaction in tobacco leaves, which was indicated by the absence of necrosis symptoms at the leaf location where the KSB isolates were inoculated. The three KSB isolates were nonpathogenic isolates to plants.

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“…The K solubilization index (KSI) was used to quantify the ability to solubilize K. The results showed that BK 1 and FW 2B were suitable for inoculant application in the greenhouse experiment (Table 5). KSM produces organic acids that can solubilize K directly or chelate silicate ions first to absorb K and become available to plants [42,43]. Utilizing KSM increased K uptake in plants (Table 8), indicating its potential as a biofertilizer.…”

Section: Exploration Of Soil Microorganisms From Melon Rhizospherementioning

confidence: 99%

Enhancing Melon Growth and Nutrient Uptake with Plant-Growth-Promoting Microorganisms from Cucumis melo

Amalina,

Sudadi,

Pratama

et al. 2023

IJDNE

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In an effort to mitigate the environmental impact of chemical fertilizers while promoting soil sustainability, this study investigated the potential of rhizosphere-associated microorganisms to augment nutrient uptake and growth in melon crops. Soil samples were procured from three distinct melon fields and subjected to serial dilution techniques for microbial isolation on Nutrient Agar (NA) and Potato Dextrose Agar (PDA) media. Subsequent screening identified select isolates with capabilities for nitrogen fixation, phosphorus and potassium solubilization, indole-3-acetic acid (IAA) production, and antagonism against pathogens. Two bacterial isolates, designated BS 1A and BK 1, and one fungal isolate, FW 2B, were earmarked for their plant growth-promoting microorganism (PGPM) potential. Sequence analysis revealed homology of BS 1A with Pseudochrobactrum sp., BK 1 with Bacillus cereus, and FW 2B with Trametes polyzona. A greenhouse experiment employing a completely randomized design evaluated the effects of these isolates on melon growth. Control treatments included a positive control (C+), receiving the recommended dosage of NPK fertilizer, and a negative control (C-), devoid of both NPK and microbial treatments. The application of B. cereus, Pseudochrobactrum sp., and T. polyzona was observed to significantly elevate plant biomass and nutrient acquisition, with B. cereus demonstrating the most pronounced effect, rivalling that of chemical fertilization. The results of this study highlight the potential of utilizing select soil microorganisms as biostimulants, which could play a significant role in increasing the productivity of melon crops, thereby supporting the advancement of sustainable agricultural methodologies.

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The ability of potassium solubilizing rhizo-bacteria isolated from maize rhizosphere for microbial fertilizer

Cited by 5 publications

References 9 publications

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

Halotolerant Plant Growth-Promoting Rhizobacteria Isolated From Saline Soil Improve Nitrogen Fixation and Alleviate Salt Stress in Rice Plants

Reaksi Hipersensitif Daun Tembakau oleh Isolat Bakteri Pelarut Kalium pada Praformulasi Pupuk Hayati

Enhancing Melon Growth and Nutrient Uptake with Plant-Growth-Promoting Microorganisms from Cucumis melo

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