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.

scholarly journals Is It Possible to Replace Part of the Mineral Nitrogen Dose in Maize for Grain by Using Growth Activators and Plant Growth-Promoting Rhizobacteria?

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1647
Author(s):  
Arkadiusz Artyszak ◽  
Dariusz Gozdowski
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Mineral Nitrogen ◽  
Nutrient Losses ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Maize Grain ◽  
The Eu

The European Green Deal presented by the European Commission aims to reduce nutrient losses by at least 50% while preventing the deterioration of soil fertility and reducing the use of fertilizers by at least 20% by 2030. Farmers in the EU must prepare for this. Studies carried out in several locations in Poland in 2017–2019 tested the possibility of replacing 30–40% of the dose of mineral nitrogen by Penergetic (K + P) growth activators alone and in combination with Azoter containing plant growth promoting rhizobacteria in the cultivation of maize for grain. It was confirmed that the two combinations allowed a higher yield of maize grain by 2.9% and 8.8%, respectively, compared to the full nitrogen dose. Positive changes in the content of some assimilable macro- and microelements and soil organic carbon (SOC), and an increase in soil pH, were also observed.

scholarly journals Crop management as a driving force of plant growth promoting rhizobacteria physiology

SpringerPlus ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Juliana Melo ◽  
Manuela Carolino ◽  
Luís Carvalho ◽  
Patrícia Correia ◽  
Rogério Tenreiro ◽  
...  
Keyword(s):  
Plant Growth ◽  
Driving Force ◽  
Crop Management ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

Impact of intercropping and co-inoculation with strains of plant growth-promoting rhizobacteria on phosphorus and nitrogen concentrations and yield of durum wheat (Triticum durum) and faba bean (Vicia faba)

2019 ◽  
Vol 70 (8) ◽  
pp. 649
Author(s):  
Noura Bechtaoui ◽  
Abdelkhalek El Alaoui ◽  
Anas Raklami ◽  
Loubna Benidire ◽  
Abdel-ilah Tahiri ◽  
...  
Keyword(s):  
Plant Growth ◽  
Durum Wheat ◽  
Vicia Faba ◽  
Faba Bean ◽  
Triticum Durum ◽  
Plant Growth Promoting Rhizobacteria ◽  
Agricultural Practice ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
The Impact

Intercropping is a farming practice that fights pests and diseases and improves plant growth. The use of plant growth-promoting rhizobacteria (PGPR) strains to boost the yield of intercrops constitutes a promising tool in agricultural practice. This study investigated the impact of single inoculation and co-inoculation with PGPR on plant biomass and phosphorus (P) and nitrogen (N) concentrations under different cropping systems. Two PGPR strains with different traits were selected: PGP13 (Rahnella aquatilis) and PS11 (Pseudomonas sp.). A greenhouse experiment was designed using durum wheat (Triticum durum L.) and faba bean (Vicia faba L.), sole cropped or intercropped, including four inoculation treatments: (i) uninoculated, (ii) inoculated with PS11 (iii) inoculated with PGP13, and (iv) co-inoculated with PS11 + PGP13. Co-inoculation under the intercropping system improved plant dry matter and enhanced bean pod and wheat spike weights to 685.83% and 385.83%, respectively, of the values for uninoculated, intercropped plants. Higher P and N concentrations were detected in intercropped, co-inoculated plants and in bean pods and wheat spikes. The results were then submitted to principal component analysis, showing that treatments with higher biomass and nutrient concentrations were strongly correlated with intercropped, co-inoculated plants.

scholarly journals The Effect of Growth Activators and Plant Growth-Promoting Rhizobacteria (PGPR) on the Soil Properties, Root Yield, and Technological Quality of Sugar Beet

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1262
Author(s):  
Arkadiusz Artyszak ◽  
Dariusz Gozdowski
Keyword(s):  
Plant Growth ◽  
Sugar Beet ◽  
Soil Properties ◽  
Nitrogen Fertilization ◽  
Plant Growth Promoting Rhizobacteria ◽  
Sugar Yield ◽  
Mineral Nitrogen ◽  
Root Yield ◽  
Plant Growth Promoting ◽  
Growth Promoting

The strategy “from farm to fork” assumes a reduction in the usage of fertilizers and plant protection products in EU agriculture. The aim of this study, conducted over the years 2017–2019 in several locations in Poland, is to evaluate the application of growth activators with and without plant growth-promoting rhizobacteria to reduce mineral nitrogen fertilization without negative effects on the root yield. We studied the effect of these activators on selected soil properties. The experimental treatments included the application of the growth activators Penergetic (K + P) and Azoter, which contains the bacteria Azotobacter chroococcum, Azospirillum brasilense, and Bacillus megaterium, before sowing or during vegetation. The nitrogen rates were reduced by 30% in comparison to full nitrogen mineral fertilization (control treatment). In selected experiments, the application of Penergetic and Penergetic with Azoter caused a higher content of nitrate nitrogen (N-NO3) and ammonium nitrogen (N-NH4) after the sugar beet harvest as well as higher contents of mineral nitrogen (Nmin), P, K, and Mg in the soil in comparison to the treatment with the full dose of mineral nitrogen fertilization. The obtained results proved that it was possible to reduce the mineral application of nitrogen by 30% without a decrease in the biological and pure sugar yield, and even with an increase in the sugar yield caused by the application of the growth activators Penergetic (K + P) and Azoter.

scholarly journals Evaluating the salt resistance of Arabidopsis thaliana induced by plant growth-promoting rhizobacteria (PGPR) isolated from Can Gio mangrove forest

2017 ◽  
Vol 1 (T2) ◽  
pp. 64-74
Author(s):  
Trinh Le Phuong Ngo ◽  
Thanh Nguyen Chu ◽  
Thanh Nguyen Chu ◽  
Minh Thi Thanh Hoang
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
Seedling Growth ◽  
Mangrove Forest ◽  
Plant Growth Promoting Rhizobacteria ◽  
Climate Change Scenarios ◽  
Agricultural Practice ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Can Gio Mangrove

As soil salinization is a major concern of modern agriculture and an expected threat in climate change scenarios, special effort will be required for maintaining crop production under salt stress. The use of plant growth-promoting rhizobacteria (PGPR) is a promising agricultural practice to help less salt tolerant crops to maintain an acceptable level of productivity under higher salt concentrations. Here, we have isolated the PGPR from the rhizosphere soil in Can Gio Mangrove Forest, Vietnam. Fifteen isolates of bacteria were successfully isolated on medium containing 10 % NaCl. Subsequently, to investigate the effects of PGPR isolates on the growth of Arabidopsis thaliana, seeds were treated with the PGPR and observed the germination as well as the seedling growth. Under stress condition, all bacteria inhibited the germination, however, 02NP01, 04PP02 and 06NS01, identified as Bacillus thuringiensis, Vibrio and Halomonas elongata, respectively, could promote Arabidopsis thaliana seedling growth compared to the control. Further analysis found that three bacteria exhibited the ability to fix nitrogen, solubilize inorganic phosphorus and produce phytohormone-auxin. In addition, under normal condition, Bacillus and Vibrio significantly increased A. thaliana germination, after treatment with Bacillus and Vibrio the seed germination rate increased by 36.60 % and 69.76 % respectively compared to the control. Our research shows that isolated potential rhizobacterial strains may be used as an effective tool for enhancing Arabidopsis thaliana seedling growth under salinity stress.

scholarly journals Unraveling Mechanisms and Impact of Microbial Recruitment on Oilseed Rape (Brassica napus L.) and the Rhizosphere Mediated by Plant Growth-Promoting Rhizobacteria

2021 ◽  
Vol 9 (1) ◽  
pp. 161
Author(s):  
Ying Liu ◽  
Jie Gao ◽  
Zhihui Bai ◽  
Shanghua Wu ◽  
Xianglong Li ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Community Composition ◽  
Oilseed Rape ◽  
Plant Growth Promoting Rhizobacteria ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Brassica Napus L ◽  
Plant Growth Promoting ◽  
Growth Promoting

Plant growth-promoting rhizobacteria (PGPR) are noticeably applied to enhance plant nutrient acquisition and improve plant growth and health. However, limited information is available on the compositional dynamics of rhizobacteria communities with PGPR inoculation. In this study, we investigated the effects of three PGPR strains, Stenotrophomonas rhizophila, Rhodobacter sphaeroides, and Bacillus amyloliquefaciens on the ecophysiological properties of Oilseed rape (Brassica napus L.), rhizosphere, and bulk soil; moreover, we assessed rhizobacterial community composition using high-throughput Illumina sequencing of 16S rRNA genes. Inoculation with S. rhizophila, R. sphaeroides, and B. amyloliquefaciens, significantly increased the plant total N (TN) (p < 0.01) content. R. sphaeroides and B. amyloliquefaciens selectively enhanced the growth of Pseudomonadacea and Flavobacteriaceae, whereas S. rhizophila could recruit diazotrophic rhizobacteria, members of Cyanobacteria and Actinobacteria, whose abundance was positively correlated with inoculation, and improved the transformation of organic nitrogen into inorganic nitrogen through the promotion of ammonification. Initial colonization by PGPR in the rhizosphere affected the rhizobacterial community composition throughout the plant life cycle. Network analysis indicated that PGPR had species-dependent effects on niche competition in the rhizosphere. These results provide a better understanding of PGPR-plant-rhizobacteria interactions, which is necessary to develop the application of PGPR.

scholarly journals Is It Possible to Maintain the Quantity and Quality of Winter Wheat Grain by Replacing Part of the Mineral Nitrogen Dose by Growth Activators and Plant Growth-Promoting Rhizobacteria (PGPR)?

2021 ◽  
Vol 13 (11) ◽  
pp. 5834
Author(s):  
Arkadiusz Artyszak ◽  
Dariusz Gozdowski
Keyword(s):  
Plant Growth ◽  
Winter Wheat ◽  
Plant Growth Promoting Rhizobacteria ◽  
Mineral Nitrogen ◽  
Production Studies ◽  
Plant Growth Promoting ◽  
Production Technologies ◽  
Growth Promoting ◽  
Micro Elements

The introduction of the “Farm to Fork” strategy in the EU will require a significant reduction in mineral nitrogen fertilization, and therefore the introduction of innovative production technologies to prevent a decline in agricultural production. Studies carried out in several locations in Poland in 2016/17–2018/2019 tested the possibility of replacing 30% of the dose of mineral nitrogen with growth activators alone, in combination with plant growth promoting rhizobacteria in the cultivation of winter wheat. It was confirmed that these two combinations allowed the obtention of a higher yield of grain by 13%, compared to the full nitrogen dose. Simultaneously, the grain quality did not change significantly. In some locations, a decrease in the content of nitrates in the soil was observed, which may mean a greater uptake of this nutrient by plants and an increase in the content of some available macro- and micro-elements, mainly phosphorus, magnesium, zinc, copper and iron, and soil organic carbon. Introducing the studied treatment and limiting the fertilization with mineral nitrogen of wheat in Poland by only 30 kg ha−1 N would save its consumption by 72 thousand t per year.

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