Potency of Bacillus spp from Potato Rhizosphere as Active Ingredients for Biostimulant Formulation

Kesaulya, Henry; Virgowati, Hasinu Jeffij; Celvia, Tuhumury Gratiana Normalita

doi:10.5539/mas.v11n10p74

Cited by 3 publications

(3 citation statements)

References 30 publications

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“…RJ1T bacterial isolate is a gram-positive bacterium with a coccus cell shape (Figure 6). Research by Kesaulya et al (2017) confirmed auxin production from several gram-positive bacteria ranging from 0.39-5.8 mg.L -1 . Actinomecetas bacteria can produce IAA ranging from 0.33-36 mgL .-1 (Fatmawati et al 2019).…”

Section: Discussionmentioning

confidence: 94%

A new strain of bacteria isolated from chemically saturated corn rhizosphere under the dominance of the mineral kaolinite

Sukmawati¹,

RAHIM²,

HARSANI³

et al. 2023

Biodiversitas

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Abstract. Sukmawati, Rahim I, Harsani, Syafnur A, Arodhiskara Y, Selao A, Anisa LFN. 2023. A new strain of bacteria isolated from chemically saturated corn rhizosphere under the dominance of the mineral kaolinite. Biodiversitas 24: 1886-1894. The kaolinite mineral that dominates the cornfield reduces soil fertility and the bacterial community. The discovery of adaptive bacterial strains on kaolinite dominant land is a biological strategy to improve soil fertility because it is part of the root ecosystem. This study aims to obtain adaptive and superior bacteria in producing IAA hormones and fixing nitrogen. The soil analysis method uses X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF) analysis to characterize clay minerals and soil chemical content. While the bacterial characterization was carried out morphologically and physiologically. After that, followed by the 16S rRNA gene sequence analysis. The type of kaolinite clay mineral dominates the soil samples with a SiO2 content of >40%. A total of 17 bacterial isolates were purified, 12 had round colony shapes, and 5 had irregular shapes dominated by cream color, 11 of which were identified as Gram-positive and 6 Gram-negative bacteria. RJ1T isolates/isolated produced the highest auxin (0.141 mgL-1), while RJ1P isolates/isolated had the highest nitrogen fixation ability (0.975%) and were not pathogenic. The isolates were closely related to the Nocardioides marinisabuli strain RA2816S ribosomal RNA gene (99.57%). Thus, RJ1PI bacterial isolate is an adaptive bacteria that can be formulated as a biological agent to increase maize productivity in the dry land.

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Section: Discussionmentioning

confidence: 94%

A new strain of bacteria isolated from chemically saturated corn rhizosphere under the dominance of the mineral kaolinite

Sukmawati¹,

RAHIM²,

HARSANI³

et al. 2023

Biodiversitas

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“…A desirable characteristic for PGPR is the capacity to produce phytohormones, like auxins. Several species of Bacillus have been reported to produce auxins (Calvo et al, 2010;Kesaulya et al, 2017). Idris et al, (2007) have shown that mutants of B. amyloliquefaciens FZB42 with diminished levels of IAA production were less efficient in promoting plant growth.…”

Section: Resultsmentioning

confidence: 99%

Influence of Bacillus Spp. Based Bioproducts on Potato Plant Growth and Control of Rhizoctonia Solani

Dinu¹,

Boiu-Sicuia²,

Constantinescu³

2019

BUASVMCN-ASB

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Some Bacillus based bioproducts were analyzed for their plant growth promotion and Rhizoctonia solani biocontrol potential in potato plants. The bioproducts were formulated as concentrated aqueous suspension, each containing one of the following plant beneficial bacteria: Bacillus safensis Rd.b2, Bacillus spp. 75.1s and Cp.b4 strains. These were applied on potato seeding material in order to evaluate plant growth promotion effects. The biocontrol efficacy was also evaluated, using Rhizoctonia solani DSM 63002 as plant pathogen, and Prestige 290FS as reference chemical treatment.In the plant growth-promotion experiments, several biologic parameters were biometrically evaluated. Best results regarding plant growth and vigor were obtained using CropMax, a commercial phytostimulatory product. However, the bacterial treatment with Bacillus spp. Cp.b4 and 75.1s showed an improved plant growth compared to the untreated control. An efficacy of 93.75% against Rhizoctonia dumping-off was registered when using the Prestige 290FS chemical control. Mix treatments based on this pesticide, in low dose, combined with Cp.b4 or 75.1s biocontrol strains significantly reduced the pathogenic attack, showing 85 to 87.5% efficacy.The present research demonstrated that the bacterial bioproducts based on Bacillus spp. 75.1s and Cp.b4 strains increase plant growth and are highly effective in controlling Rhizoctonia attack in potato plants.

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“…Pupuk organik cair dapat dibuat dari bahanbahan organik disekitar lingkungan tempat tinggal, dapat berupa sampah organik rumah tangga, limbah pertanian dan kotoran ternak, hal ini sesuai dengan pernyataan Nassaruddin dan Rosmawati (2011) Sumber bahan baku pupuk organik tersedia dimana saja dengan jumlah yang melimpah yang semuanya dalam bentuk limbah, baik limbah rumah tangga, rumah makan, pasar pertanian, peternakan, maupun limbah organik jenis lain. Revitalisasi pemulihan dan peningkatan produktivitas lahan secara berkelanjutan dapat dilakukan dengan meningkatkan peranan pupuk organik cair yang diperkaya dengan mikroba plant promoting rhizobacteria (PGPR) sebagai biostimulan (Kesaulya 2015;Kesaulya et al, 2015aKesaulya et al, , 2015bKesaulya et al, , 2015cKesaulya et al, 2017). Mikroba yang terdapat pada pupuk organik cair dapat berpengaruh terhadap proses fisiologis dan metabolisme tanaman serta mendukung kesuburan tanah (Nardy et al, 2009).…”

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Aplikasi Integrasi Pupuk NPK Dengan Waktu Pemberian Pupuk Organik Cair Pada Tanaman Pakcoy (Brassica rapa L.)

Ayal

Kesaulya

Matulessy

2018

JBDP

Self Cite

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This research was aimed to get the optimum NPK fertilizer dosage with the time of liquid organic fertilizer application to support the growth and yield of pakcoy (Brassica rappa L.). The study used a Randomized Block Design with three replications. Observation variables included plant height, leaf number, leaf area, total plant weight, root length, root weight and total plant weight percentage. The results showed that N0 (without NPK fertilizer) was the best based on the plant height and leaf number. Liquid organic fertilizer given at 3-time applications per plant (W3) contributed significantly to leaf number at 35 days after planting and gave the highest yield of leaves, with 17,45 leaves. The treatment of NPK compound fertilizer dosage with the time of liquid organic fertilizer gave significant effects on the leaf area, total plant weight, root length, and root weight. Keywords: liquid organic fertilizer, NPK, pakcoy ABSTRAK Penelitian ini bertujuan untuk mendapatkan dosis pupuk NPK dengan waktu plikasi pupuk organik cair yang tepat untuk menunjang pertumbuhan danp roduksi tanaman pakcoy (Brassica rappa L.). Penelitian mengunakan Rancangan Acak Kelompok dengan tiga ulangan. Peubah-peubah pengamatan meliputi tinggi tanaman, jumlah daun, luas daun, berat total tanaman, panjang akar, berat akar dan persentase berat total tanaman. Hasil penelitian menunjukkan bahwa perlakuan N0 (tanpa pupuk NPK) merupakan yang terbaik dari penelitian ini terhadap parameter tinggi tanaman dan jumlah daun. Waktu pemberian pupuk organik cair 3 kali/tanaman (perlakuan W3) memberikan kontribusi yang signifikan terhadap jumlah daun 35 hari setelah tanam dan menghasilkan daun terbanyak dengan jumlah 17,45 helai. Perlakuan dosis pupuk majemuk NPK dengan waktu pemberian pupuk organik cair memberikan pengaruh yang nyata sampai sangat nyata terhadap luas daun, berat total tanaman, panjang akar serta berat akar. Kata kunci: NPK, pakcoy, pupuk organik cair

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Potency of Bacillus spp from Potato Rhizosphere as Active Ingredients for Biostimulant Formulation

Cited by 3 publications

References 30 publications

A new strain of bacteria isolated from chemically saturated corn rhizosphere under the dominance of the mineral kaolinite

A new strain of bacteria isolated from chemically saturated corn rhizosphere under the dominance of the mineral kaolinite

Influence of Bacillus Spp. Based Bioproducts on Potato Plant Growth and Control of Rhizoctonia Solani

Aplikasi Integrasi Pupuk NPK Dengan Waktu Pemberian Pupuk Organik Cair Pada Tanaman Pakcoy (Brassica rapa L.)

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