scholarly journals Biological products in organic agriculture

2020 ◽  
Vol 2 (4) ◽  
pp. 36-41
Author(s):  
R. Aipova ◽  
A. B. Abdykadyrova ◽  
A. A. Kurmanbayev
Keyword(s):  
Organic Agriculture ◽  
Molecular Nitrogen ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Diseases ◽  
Agricultural Practice ◽  
Biological Products ◽  
Positive Effects ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
The Creation

The review presents data on the creation of complex microbial preparations and their application in agricultural practice. According to economists, the turnover in the field of organic agriculture is worth 85-90 billion US dollars a year. Developers of biological products pay great attention to the creation of complex biofertilizers, which contribute to a stable 20-25% increase in yield, with a significant reduction of plant damage by root rot. Among the considered positive effects of plant growth promoting rhizobacteria (PGPR) on plants are the ability to fix molecular nitrogen from the atmosphere, the synthesis of hormonal and fungitoxic substances, and the mobilization of sparingly soluble soil phosphates. The presented data show promise for the use of these microorganisms in the development of eco-friendly farming technologies in order to increase plant productivity and establish biocontrol over the development of plant diseases, reduce the chemical load on the soil, and increase its fertility.

scholarly journals PGPR Bacteria - Promising Objects to Create BIOFERTILIZERS of Complex Action

2020 ◽  
Author(s):  
A.B. Abdykadyrova ◽  
R. Aipova ◽  
B.O. Raisov ◽  
A.A. Kurmanbaev
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Survival Data ◽  
Heavy Metal Contamination ◽  
Molecular Nitrogen ◽  
Plant Growth Promoting Rhizobacteria ◽  
Soil Salinization ◽  
Plant Diseases ◽  
Plant Growth Promoting ◽  
Growth Promoting

The review summarizes literature data and the results of the authors own research on the agronomically useful group of soil microorganisms stimulating plant growth (plant-growth-promoting rhizobacteria - PGPR bacteria). PGPRs have great potential for plant growth promoting as they control pest and disease and have been considered important in sustainable agriculture. PGPR includes a promising group of bacteria that live on the surface and inside the roots of agricultural plants. They possess a number of positive properties such as fixation of molecular nitrogen of the atmosphere, decomposition of harmful chemical compounds, synthesis of substances of a hormonal nature, are able to transform difficult phosphorus soil compounds, and also prevent or reduce the growth of phytopathogens due to the ability to synthesize substances with bactericidal and fungicidal effects, as well as competition for ions iron, without which the growth of phytopathogens is difficult. In addition, PGPR bacteria provide plant resistance to adverse environmental factors: heavy metal pollution of the soil, soil salinization, and drought. Under stress caused by heavy metal contamination of the soil, PGPR bacteria enhance plant survival. Data are presented showing the prospects of using these microorganisms in the development of technologies of ecological farming in order to increase plant productivity, biocontrol over the development of plant diseases, reduce the chemical load on the soil, increase its fertility.

scholarly journals Effect ofPseudomonas putidaon Growth and Anthocyanin Pigment in Two Poinsettia(Euphorbia pulcherrima)Cultivars

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Ramon Zulueta-Rodriguez ◽  
Miguel Victor Cordoba-Matson ◽  
Luis Guillermo Hernandez-Montiel ◽  
Bernardo Murillo-Amador ◽  
Edgar Rueda-Puente ◽  
...  
Keyword(s):  
Plant Growth Promoting Rhizobacteria ◽  
Control Group ◽  
Euphorbia Pulcherrima ◽  
Anthocyanin Pigment ◽  
Positive Effects ◽  
Naked Eye ◽  
Plant Growth Promoting ◽  
Number Of Leaves ◽  
Growth Promoting ◽  
Better Than

Pseudomonas putidais plant growth promoting rhizobacteria (PGPR) that have the capacity to improve growth in plants. The purpose of this study was to determine growth and anthocyanin pigmentation of the bracts in two poinsettiaEuphorbia pulcherrimacultivars (Prestige and Sonora Marble) using three strains ofP. putida, as well as a mixture of the three (MIX). Comparison with the control group indicated for the most part that Prestige grew better than the Sonora Marble cultivars with the PGPR strains. Prestige with the MIX strain grew better compared to control for the number of cyathia (83 versus 70.4), volume of roots (45 versus 35 cm3), number of leaves (78 versus 58), and area of leaf (1,788 versus 1,331 cm2), except for the number of flowers (8.8 versus 11.6). To the naked eye, coloration of plants appeared identical in color compared to the control group. For all plants withP. putidastrains, there was less anthocyanin pigment, but biomass was always greater with PGPR strains. Nevertheless, to the naked eye, the coloration of the plants appeared identical in color compared to the control group. This is the first study reporting the positive effects ofP. putidarhizobacteria treatments on growth of poinsettia cultivars.

scholarly journals Morphophysiological and phytochemical responses of fenugreek to plant growth promoting rhizobacteria (PGPR) under different soil water levels

2018 ◽  
Vol 30 (2) ◽  
pp. 215-228
Author(s):  
Ali Sharghi ◽  
Hassanali Naghdi Badi ◽  
Sahebali Bolandnazar ◽  
Ali Mehrafarin ◽  
Mohammad Reza Sarikhani
Keyword(s):  
Plant Growth ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Plant Growth Promoting Rhizobacteria ◽  
Water Levels ◽  
Flowering Stage ◽  
Positive Effects ◽  
Plant Growth Promoting ◽  
Growth Promoting

Abstract Fenugreek (Trigonella foenum-graecum L.) is a valuable medicinal plant, which is widely distributed throughout the world. It has been known that plant growth promoting rhizobacteria (PGPR) have positive effects on the quality and quantity of medicinal plants under different soil water levels. For this reason, a factorial experiment was conducted on the basis of a randomized complete block design (RCBD) to evaluate PGPR effects on the morphophysiological and phytochemical traits of fenugreek under different soil water levels. This study was conducted in two separate experiments: after the six-leaf stage and after the flowering stage. In the experiments, the treatments were plant growth promoting rhizobacteria (PGPR) including the control, Sinorhizobium meliloti, Pseudomonas fluorescens, a combination of S. meliloti and P. fluorescens, and different soil water levels (i.e. 100, 80, 60 and 40% of field capacity (FC) in three replications. The results showed that the highest seed weight per plant was obtained by inoculation with the S. meliloti and P. fluorescens combination at 100% FC after the two developmental stages. The maximum concentrations of nicotinic acid and trigonelline were observed for the combination of S. meliloti and P. fluorescens at the soil water content of 40% FC after the six-leaf stage and for S. meliloti at the soil water content of 40% FC after the flowering stage. The correlation and stepwise regression analyses showed positive effects of PGPR application on the morphophysiological and phytochemical traits of fenugreek plants under different soil water levels.

The effect of plant growth-promoting rhizobacteria on asparagus seedlings and germinating seeds subjected to water stress under greenhouse conditions

2009 ◽  
Vol 55 (4) ◽  
pp. 388-394 ◽  
Author(s):  
Scott M. Liddycoat ◽  
Bruce M. Greenberg ◽  
David J. Wolyn
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Asparagus Officinalis ◽  
Positive Effects ◽  
Transplant Shock ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Germinating Seeds

Plant growth-promoting rhizobacteria (PGPR) can have positive effects on vigour and productivity, especially under stress conditions. In asparagus ( Asparagus officinalis L.) field culture, seeds are planted in high-density nurseries, and 1-year-old crowns are transplanted to production fields. Performance can be negatively affected by water stress, transplant shock, and disease pressure on wounded roots. PGPR inoculation has the potential to alleviate some of the stresses incurred in the production system. In this study, the effects of PGPR ( Pseudomonas spp.) treatment were determined on 3-week-old greenhouse-grown seedlings and germinating seeds of 2 asparagus cultivars. The pots were irrigated to a predetermined level that resulted in optimum growth or the plants were subjected to drought or flooding stress for 8 weeks. The cultivars responded differently to PGPR: single inoculations of seedlings enhanced growth of ‘Guelph Millennium’ under optimum conditions and ‘Jersey Giant’ seedlings under drought stress. Seed inoculations with PGPR resulted in a positive response only for ‘Guelph Millennium’, for which both single or multiple inoculations enhanced plant growth under drought stress.

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 fabrication of the complex bio-fertilizer for wheat cultivation based on collection bacteria of the PGPR group

2020 ◽  
Vol 21 (11) ◽  
Author(s):  
RAKHILYA AIPOVA ◽  
AIZHAN ABDYKADYROVA ◽  
DMITRY SILAYEV ◽  
ERKIN TAZABEKOVA ◽  
IRINA OSHERGINA ◽  
...  
Keyword(s):  
Wheat Yield ◽  
Practical Interest ◽  
Plant Growth Promoting Rhizobacteria ◽  
Phytopathogenic Fungi ◽  
Plant Diseases ◽  
Bacterial Strains ◽  
Biological Products ◽  
Wheat Cultivation ◽  
Plant Growth Promoting ◽  
Wheat Products

Abstract. Aipova R, Abdykadyrova A, Silayev D, Tazabekova E, Oshergina I, Ten E, Kurmanbaye A. 2020. The fabrication of the complex bio-fertilizer for wheat cultivation based on collection bacteria of the PGPR group. Biodiversitas 21: 5021-5028. The development of new types of biological products based on microbial complexes from local bacterial strains is a great theoretical and practical interest for agriculture. It can provide an opportunity for better preservation of the natural properties of the wheat products under extreme conditions. The aim of this study was to obtain and test a biological product to increase wheat productivity in northern Kazakhstan. Our data indicate the potential of Plant Growth-Promoting Rhizobacteria (PGPR) group bacteria for the development of biofertilizers and biopesticides. For instance, the bacteria B. mojavensis showed effectiveness in the experiments with the wheat (Astana-2 type). We observed an increase in wheat yield by 15% under conditions of artificial infection of crops with snow mold (by 2.5fold compared with the control). The results demonstrated that the B. mojavensis Lhv 97 strain can be used as an ingredient of biological products due to its activity against plant diseases caused by phytopathogenic fungi.

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