scholarly journals Nitrogen use by plants and nitrogen flows after application of standard and biomodified nitrogen fertilizers on barley

2021 ◽  
Vol 66 (4) ◽  
Author(s):  
Alexey Zavalin ◽  
Vladimir Chebotar ◽  
Alexey Alferov ◽  
Lyudmila Chernova ◽  
Elena Shcherbakova ◽  
...  
Keyword(s):  
Nitrogen Fertilizers ◽  
Mineral Fertilizers ◽  
Plant Growth Promoting Bacteria ◽  
Agricultural Practice ◽  
Novel Technology ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
System Of Fertilizers ◽  
15N Stable Isotope ◽  
Nitrogen Flows

The aim of our study was to assess the efficiency of application of biomodified nitrogen fertilizers for barley, to reveal the sources of nitrogen used for biomass formation with the use of the 15N stable isotope, and to study nitrogen flows in the system of fertilizers–soil–plants–atmosphere. We demonstrated in a model experiment the ability of the plant growth-promoting bacteria Bacillus subtilis Ch-13 to move from the granules of mineral fertilizers to plant roots and to colonize them effectively. The effectiveness of biomodified nitrogen fertilizers for barley, Nur variety, was assessed in a microfield trial. After the application of biomodified nitrogen fertilizers, the accumulation of 15N in the plants increased by 2–5 %, its incorporation in the soil decreased and gaseous losses were decreased by 7 % as compared with the use of the usual forms of fertilizers. The application of biomodified nitrogen fertilizers can be used in agricultural practice as a novel technology to regulate nitrogen flows in the system of fertilizers–soil–plants–atmosphere.

scholarly journals Plant Growth-Promoting Bacteria: Mechanisms and Applications

Scientifica ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Bernard R. Glick
Keyword(s):  
Plant Growth ◽  
Population Pressure ◽  
Great Promise ◽  
Environmental Damage ◽  
Plant Growth Promoting Bacteria ◽  
Agricultural Practice ◽  
Environmental Cleanup ◽  
Simple Strategy ◽  
Plant Growth Promoting ◽  
Growth Promoting

The worldwide increases in both environmental damage and human population pressure have the unfortunate consequence that global food production may soon become insufficient to feed all of the world's people. It is therefore essential that agricultural productivity be significantly increased within the next few decades. To this end, agricultural practice is moving toward a more sustainable and environmentally friendly approach. This includes both the increasing use of transgenic plants and plant growth-promoting bacteria as a part of mainstream agricultural practice. Here, a number of the mechanisms utilized by plant growth-promoting bacteria are discussed and considered. It is envisioned that in the not too distant future, plant growth-promoting bacteria (PGPB) will begin to replace the use of chemicals in agriculture, horticulture, silviculture, and environmental cleanup strategies. While there may not be one simple strategy that can effectively promote the growth of all plants under all conditions, some of the strategies that are discussed already show great promise.

scholarly journals Humic Substances in Combination With Plant Growth-Promoting Bacteria as an Alternative for Sustainable Agriculture

2021 ◽  
Vol 12 ◽  
Author(s):  
Maura Santos Reis de Andrade da Silva ◽  
Bianca de Melo Silveira dos Santos ◽  
Camilla Santos Reis de Andrade da Silva ◽  
Carolina Santos Reis de Andrade da Silva ◽  
Luiz Fernando de Sousa Antunes ◽  
...  
Keyword(s):  
Plant Growth ◽  
Humic Substances ◽  
Bacterial Colonization ◽  
Simultaneous Action ◽  
Mineral Fertilizers ◽  
Plant Responses ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth-promoting bacteria (PGPB) and humic substances (HSs) are promising options for reducing the use of pesticides and mineral fertilizers. Although many studies have shown the effects of PGPB and HSs separately, little information is available on plant responses to the combined application of these biostimulants despite the great potential for the simultaneous action of these biological inputs. Thus, the objective of this review is to present an overview of scientific studies that addressed the application of PGPB and HSs to different crops. First, we discuss the effect of these biostimulants on biological nitrogen fixation, the various effects of the inoculation of beneficial bacteria combined with the application of HSs on promoting the growth of nonleguminous plants and how this combination can increase bacterial colonization of plant hosts. We also address the effect of PGPB and HSs on plant responses to abiotic stresses, in addition to discussing the role of HSs in protecting plants against pathogens. There is a lack of studies that address the role of PGPB + HSs in biocontrol. Understanding the factors involved in the promotion of plant growth through the application of PGPB and HSs can assist in the development of efficient biostimulants for agricultural management. This approach has the potential to accelerate the transition from conventional cultivation to sustainable agrosystems.

scholarly journals Nitrogen input strategies in pastures: mineral fertilizer, bacterial inoculant and consortium with forage peanuts

2019 ◽  
Vol 12 (3) ◽  
pp. 137 ◽  
Author(s):  
M. L. B. Bourscheidt ◽  
B. Carneiro e Pedreira ◽  
D. H. Pereira ◽  
M. C. Zanette ◽  
J. Devens
Keyword(s):  
Climate Changes ◽  
Production Systems ◽  
Mineral Fertilizer ◽  
Mineral Fertilizers ◽  
Plant Growth Promoting Bacteria ◽  
Atmospheric Nitrogen ◽  
Forage Grasses ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Animal Production Systems

Brazil is a prominent country in the production of beef cattle, where pastures are the basis for ruminant feed, because it is the most economical and practical form of food supply. Nitrogen is the main nutrient for maintaining and increasing the productivity of forage grasses, but its application is one of the most costly and greenhouse gas emitting practices for the system. The introduction of this element into the soil-plant-animal complex can be directly, with mineral fertilizers and with other alternatives, for example, through symbiosis of plants with atmospheric nitrogen fixing bacteria and plant growth promoting bacteria. Owing to future climate changes and increasing food demand, plant and animal production systems need to be increasingly competitive, responsible and efficient. Therefore, the objective of this study was to discuss nitrogen supply strategies in pastures: nitrogen fertilization, inoculation with Azospirillum brasilense and consortium with forage peanuts.

scholarly journals Prospects for the rhizosphere microorganisms integration into agricultural practice as biofertilizers

2020 ◽  
Author(s):  
V.F. Kozlovskaya ◽  
Keyword(s):  
N Fixation ◽  
Plant Growth Promoting Bacteria ◽  
Agricultural Practice ◽  
Chemical Fertilizers ◽  
Rhizosphere Microorganisms ◽  
Close Proximity ◽  
Plant Growth Promoting ◽  
Use Efficiency ◽  
Growth Promoting ◽  
Biological Nitrogen

Chemical fertilizers are a quick way to increase nutrients in the soil, but their use is economically costly and dangerous for the environment. Plant Growth Promoting Bacteria (PGPB) are able to increase the bioavailability of fertilizers through biological nitrogen (N) fixation, as well as potassium (K), phosphorus (P), and zinc (Zn) solubilization. The enhanced amount of soluble macro- and microelements in the close proximity of soil-root interface increases the fertilizer use efficiency ~ by 20-40 %.

scholarly journals Application of Growth Activators and Plant Growth-Promoting Rhizobacteria as a Method of Introducing a “Farm to Fork” Strategy in Crop Management of Winter Oilseed

2021 ◽  
Vol 13 (6) ◽  
pp. 3562
Author(s):  
Arkadiusz Artyszak ◽  
Dariusz Gozdowski
Keyword(s):  
Plant Growth ◽  
Oilseed Rape ◽  
Natural Environment ◽  
Crop Management ◽  
Plant Growth Promoting Rhizobacteria ◽  
Mineral Nitrogen ◽  
Nitrogen Fertilizers ◽  
Agricultural Practice ◽  
Plant Growth Promoting ◽  
Growth Promoting

In the European Union, out of concern for the quality of the natural environment, agriculture aims to limit the doses of mineral nitrogen to mitigate nitrogen leaching into the groundwater and N2O emissions into the atmosphere. This requires a search for new crop management for more environmentally friendly production. The aim of the study was to evaluate crop management technologies that would allow farmers to obtain high yields without high doses of nitrogen fertilizers. The study was conducted in Poland in 2016–2017 and 2018–2019 to test the effects of growth activators without an additional product and with a product containing plant growth-promoting rhizobacteria in the production of winter oilseed rape, reducing the nitrogen dose by 30%. The results obtained in the study show a positive effect of the studied treatments on seed yield, which was higher by 9.8 and 7.7%, and fat yield, higher by 11.4 and 9.2%, respectively, compared to those for the control treatment in which the full nitrogen dose was applied. Taking into account the scale of oilseed rape production in Poland, this means savings of 52.8 thousand tonnes of mineral nitrogen per year. Therefore, introducing the researched solutions into agricultural practice would lead to measurable benefits for the natural environment.

Isolation and identification of plant growth-promoting bacteria associated with tall fescue

2009 ◽  
pp. 211-216 ◽  
Author(s):  
J. Monk ◽  
E. Gerard ◽  
S. Young ◽  
K. Widdup ◽  
M. O'Callaghan
Keyword(s):  
New Zealand ◽  
Plant Growth ◽  
Tall Fescue ◽  
Festuca Arundinacea ◽  
Plant Growth Promoting Bacteria ◽  
Beneficial Bacteria ◽  
Isolation And Identification ◽  
Naturally Occurring ◽  
Plant Growth Promoting ◽  
Growth Promoting

Tall fescue (Festuca arundinacea) is a useful alternative to ryegrass in New Zealand pasture but it is slow to establish. Naturally occurring beneficial bacteria in the rhizosphere can improve plant growth and health through a variety of direct and indirect mechanisms. Keywords: rhizosphere, endorhiza, auxin, siderophore, P-solubilisation

Effect of plant growth promoting bacteria and drought on spring maize (Zea mays L.)

2020 ◽  
Vol 53 (2) ◽  
Author(s):  
Muhammad Mubeen ◽  
Asghari Bano ◽  
Barkat Ali ◽  
Zia Ul Islam ◽  
Ashfaq Ahmad ◽  
...  
Keyword(s):  
Zea Mays ◽  
Plant Growth ◽  
Zea Mays L ◽  
Plant Growth Promoting Bacteria ◽  
Spring Maize ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant Growth Promoting Bacteria (PGPB) - A Versatile Tool for Plant Health Management

2019 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Salah Eddin Khabbaz ◽  
D. Ladhalakshmi ◽  
Merin Babu ◽  
A. Kandan ◽  
V. Ramamoorthy ◽  
...  
Keyword(s):  
Plant Growth ◽  
Health Management ◽  
Plant Health ◽  
Plant Growth Promoting Bacteria ◽  
Versatile Tool ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals Productivity and Nutritional Trait Improvements of Different Tomatoes Cultivated with Effective Microorganisms Technology

Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 112
Author(s):  
Giuseppina Tommonaro ◽  
Gennaro Roberto Abbamondi ◽  
Barbara Nicolaus ◽  
Annarita Poli ◽  
Costantino D’Angelo ◽  
...  
Keyword(s):  
Plant Growth Promoting Bacteria ◽  
Effective Microorganisms ◽  
Microbial Inoculation ◽  
Yield And Quality ◽  
Promising Strategy ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Traditional Approaches ◽  
Nutritional Aspect

The use of ecofriendly strategies, such as the use of Plant Growth Promoting Bacteria, to improve the yield and quality of crops has become necessary to satisfy the growing demand of food and to avoid the use of chemical fertilizers and pesticides. In this study, we report the effects of an innovative microbial inoculation technique, namely Effective Microorganisms (EM), compared with traditional approaches, on productivity and nutritional aspect of four tomato varieties: Brandywine, Corbarino Giallo, S. Marzano Cirio 3, S. Marzano Antico. Results showed an increase of plant productivity as well as an enhanced antioxidant activity mainly in San Marzano Antico and Brandywine varieties treated with EM technology. Moreover, the polyphenol and carotenoid contents also changed, in response to the plant treatments. In conclusion, the application of EM® technology in agriculture could represent a very promising strategy in agricultural sustainability.

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