scholarly journals Impact of plant growth-promoting rhizobacteria on yield and disease control of Nicotiana tabacum

2018 ◽  
Vol 70 (4) ◽  
pp. 717-725
Author(s):  
Sohail Khan ◽  
Fazli Subhan ◽  
Kashif Haleem ◽  
Muhammad Khattak ◽  
Ibrar Khan ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Growth And Yield ◽  
Vitro Assay ◽  
Soil Microbial ◽  
Auxin Production ◽  
Plant Growth Promoting ◽  
Growth Promoting

An unexplored soil microbial community associated with the root system of Nicotiana tabacum was isolated to analyze its impact on growth and yield of the crop. A total of nine isolates out of 180 were biochemically screened and characterized as potential plant growth-promoting rhizobacteria due to the expression of growth-promoting traits. All isolates were positive for ammonia production, 8 were positive for phosphate solubilization but none for auxin production. The majority of the isolates were also found positive for hydrogen cyanide, siderophore and hydrolytic/degradative enzymes production, enabling them to restrict the growth of Fusarium oxysporum in an in vitro assay. Although all tested isolates enhanced tobacco growth significantly, Baj-ER-01 and CD-RS-03 were found to be the most promising in enhancing all aspects of growth. This study provides evidence for the enhancement of growth and yield of inoculated tobacco plants through an adequate supply of nutrients and/or controlling phytopathogens.

scholarly journals Comparative Effects of Bio-Wastes in Combination with Plant Growth-Promoting Bacteria on Growth and Productivity of Okra

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2065
Author(s):  
Hammad Anwar ◽  
Xiukang Wang ◽  
Azhar Hussain ◽  
Muhammad Rafay ◽  
Maqshoof Ahmad ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Health ◽  
Organic Amendments ◽  
Plant Growth Promoting Rhizobacteria ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Plant Growth Promoting Bacteria ◽  
Randomized Design ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth-promoting rhizobacteria with multiple growth-promoting traits play a significant role in soil to improve soil health, crop growth and yield. Recent research studies have focused on the integration of organic amendments with plant growth-promoting rhizobacteria (PGPR) to enhance soil fertility and reduce the hazardous effects of chemical fertilizers. This study aims to evaluate the integrated application of biochar, compost, fruit and vegetable waste, and Bacillus subtilis (SMBL 1) to soil in sole application and in combined form. The study comprises eight treatments—four treatments without inoculation and four treatments with SMBL 1 inoculation in a completely randomized design (CRD), under factorial settings with four replications. The results indicate that the integrated treatments significantly improved okra growth and yield compared with sole applications. The integration of SMBL 1 with biochar showed significant improvements in plant height, root length, leaf chlorophyll a and b, leaf relative water content, fruit weight, diameter and length by 29, 29, 50, 53.3, 4.3, 44.7 and 40.4%, respectively, compared with control. Similarly, fruit N, P and K contents were improved by 33, 52.7 and 25.6% and Fe and Zn in shoot were 37.1 and 35.6%, respectively, compared with control. The results of this study reveal that the integration of SMBL 1 with organic amendments is an effective approach to the sustainable production of okra.

scholarly journals A COMPARATIVE ANALYSIS OF PLANT GROWTH-PROMOTING TRAITS OF Pseudomonas AND Bacillus STRAINS ISOLATED FROM Lolium perenne RHIZOSPHERIC SOIL IN VOJVODINA (SERBIA) AND THEIR EFFECT ON THE PLANT YIELD

2020 ◽  
Vol 19 (3) ◽  
pp. 37-45
Author(s):  
Dragana Stamenov ◽  
Timea I. Hajnal-Jafari ◽  
Biljana Najvirt ◽  
Snežana Anđelković ◽  
Jelena Tomić ◽  
...  
Keyword(s):  
Plant Growth ◽  
Lolium Perenne ◽  
Biochemical Characterization ◽  
Total Yield ◽  
Forage Crops ◽  
Vitro Assay ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
The Impact

The objective of this work was to do a comparative study of Pseudomonas and Bacillus isolates for their plant growth-promoting (PGP) potential, monitoring the impact of selected isolates on the yield of English ryegrass (Lolium perenne). Isolation, physiological and biochemical characterization, in vitro assay of enzymatic and plant-growth promoting activities of isolates were done. Pseudomonas isolates have been shown to have the ability to use different sources of carbon, to live in the condition of low pH as well as temperature and to produce siderophore. On the other hand, Bacillus isolates have the ability to solubilize phosphate, to produce a greater amount of indol-3-acetic acid (IAA) than Pseudomonas isolates and have an inhibitory effect on the growth of phytopathogenic fungi. In other investigated traits, isolates were similar. The use of Pseudomonas sp. P12 and Bacillus sp. B1 isolates had a positive effect on the plant mass and total yield, which indicate that the use of these isolates can result in a better yield of forage crops.

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