scholarly journals Plant Growth-Promoting Rhizobacteria Allow Reduced Application Rates of Chemical Fertilizers

2009 ◽  
Vol 58 (4) ◽  
pp. 921-929 ◽  
Author(s):  
A. O. Adesemoye ◽  
H. A. Torbert ◽  
J. W. Kloepper
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Chemical Fertilizers ◽  
Application Rates ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Plant Growth Promoting Rhizobacteria (PGPR) as Green Bioinoculants: Recent Developments, Constraints, and Prospects

2021 ◽  
Vol 13 (3) ◽  
pp. 1140
Author(s):  
Anirban Basu ◽  
Priyanka Prasad ◽  
Subha Narayan Das ◽  
Sadaf Kalam ◽  
R. Z. Sayyed ◽  
...  
Keyword(s):  
Plant Growth ◽  
Abiotic Stress Tolerance ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Biotic And Abiotic Stress ◽  
Chemical Fertilizers ◽  
Suitable Alternative ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Agricultural Yields

The quest for enhancing agricultural yields due to increased pressure on food production has inevitably led to the indiscriminate use of chemical fertilizers and other agrochemicals. Biofertilizers are emerging as a suitable alternative to counteract the adverse environmental impacts exerted by synthetic agrochemicals. Biofertilizers facilitate the overall growth and yield of crops in an eco-friendly manner. They contain living or dormant microbes, which are applied to the soil or used for treating crop seeds. One of the foremost candidates in this respect is rhizobacteria. Plant growth promoting rhizobacteria (PGPR) are an important cluster of beneficial, root-colonizing bacteria thriving in the plant rhizosphere and bulk soil. They exhibit synergistic and antagonistic interactions with the soil microbiota and engage in an array of activities of ecological significance. They promote plant growth by facilitating biotic and abiotic stress tolerance and support the nutrition of host plants. Due to their active growth endorsing activities, PGPRs are considered an eco-friendly alternative to hazardous chemical fertilizers. The use of PGPRs as biofertilizers is a biological approach toward the sustainable intensification of agriculture. However, their application for increasing agricultural yields has several pros and cons. Application of potential biofertilizers that perform well in the laboratory and greenhouse conditions often fails to deliver the expected effects on plant development in field settings. Here we review the different types of PGPR-based biofertilizers, discuss the challenges faced in the widespread adoption of biofertilizers, and deliberate the prospects of using biofertilizers to promote sustainable agriculture.

scholarly journals Rapid Methods for Identification of Plant-Growth-Promoting Rhizobacteria

2021 ◽  
pp. 12-17
Author(s):  
Sangita Sahni ◽  
Bishun Deo Prasad
Keyword(s):  
Plant Growth ◽  
Human Population ◽  
Plant Growth Promoting Rhizobacteria ◽  
Bacterial Isolates ◽  
Chemical Fertilizers ◽  
Traditional Methods ◽  
Selective Enrichment ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Enrichment Methods

The growing human population has put enormous pressure on agriculture to increase production and productivity, which has resulted in the widespread usage of agrochemicals. The indiscriminate use of agrochemicals has harmed soil fertility and resulted in significant environmental contamination, impacting human health. The discovery and implementation of bacterial isolates with Plant Growth Promoting Rhizobacteria (PGPR) have enormous potential for reducing the usage of chemical fertilizers, insecticides, and herbicides. However, the identification of bacterial isolates is a prerequisite to utilize them for agricultural purposes. Traditional methods involve culturing microbes using a range of nonselective and selective enrichment methods, followed by biochemical confirmation among others. Traditional methods involve culturing microbes, followed by morphological biochemical confirmation etc. In the present investigation, we describe a fast and effective approach for isolating and identifying bacterial isolates, followed by phylogenetic analysis and submission to GenBank.

Aplikasi Bacillus subtilis pada beberapa Bahan Organik terhadap Pertumbuhan dan Produksi Tanaman Cabai Rawit (Capsicum frutescens L.)

2020 ◽  
Vol 21 (1) ◽  
pp. 14-19
Author(s):  
Praptiningsih Gamawati Adinurani ◽  
Sri Rahayu ◽  
Nurul Fima Zahroh
Keyword(s):  
Bacillus Subtilis ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Capsicum Frutescens ◽  
Plant Growth Promoting ◽  
Growth Promoting

Mikroba Bacillus subtilis merupakan agen pengendali hayati mempunyai kelebihan sebagai Plant Growth Promoting Rhizobacteria (PGPR) yaitu dapat berfungsi sebagai biofertilizer, biostimulan, biodekomposer dan bioprotektan. Tujuan penelitian mengetahui potensi B. subtilis dalam merombak bahan organik sebagai usaha meningkatkan ketersediaan bahan organik tanah yang semakin menurun. Penelitian menggunakan Rancangan Petak Terbagi dengan berbagai  bahan organik sebagai petak utama (B0 = tanpa bahan organik, B1 = kotoran ayam,  B2 = kotoran kambing, B3 = kotoran sapi) dan aplikasi B.subtilis sebagai anak petak (A0 = 0 cc/L, A1 = 5cc/L, A2 = 10 cc/L, Pengamatan meliputi variabel tinggi tanaman, indeks luas daun, jumlah buah per tanaman, berat buah per tanaman, dan bahan organik tanah. Data pengamatan  dianalisis ragam  menggunakan  Statistical Product and Service Solutions (SPSS) versi 25 dan dilanjutkan dengan uji Duncan untuk mengetahui signifikansi perbedaan antar perlakuan. Hasil penelitian menunjukkan tidak terdapat interaksi antara bahan organik kotoran ternak dan konsentrasi B. subtilis terhadap semua variabel pengamatan. Potensi B. subtilis sangat baik dalam mendekomposisi bahan organik yang ditunjukkan dengan peningkatan bahan organik, dan hasil terbaik pada kotoran  sapi (B3) dan konsentrasi B. subtilis 15 mL/L masing-masing sebesar 46.47 % dan 34.76 %. Variabel pertumbuhan tidak berbeda nyata kecuali tinggi tanaman dengan pertambahan tinggi paling banyak pada pemberian kotoran kambing sebesar 170.69 %.

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