Research Article
Growth Response of (Coffee Arabica) to Plant Growth Promoting Rhizobia (PGPR) Inoculant Collected from Rhizosphere
Andualem Arimo Turito*
,
Adugna Abdissa Belew,
sNigatu Ebisa Nemomsa,
Muluye Asnakew Alemneh
Issue:
Volume 10, Issue 1, March 2025
Pages:
1-7
Received:
6 March 2025
Accepted:
15 April 2025
Published:
14 May 2025
Abstract: Plant growth promoting rhizobia are beneficial bacteria that colonize plant roots and recover plant growth through wide variety of mechanisms. Productivity of coffee crop in Ethiopia is very low (0.7 ton ha-1 green coffee) as compared to other coffee producing countries. The low level of productivity of the crop stems from poor management of the plant during the initial stage of establishment in the field. The PGPR or Co- inoculant of PGPR and AMF can advance the nutrient use efficiency of plants. The aim of this study was to isolate, characterize (PGPR) and evaluate the Plant Growth Promoting Rhizobacteria inoculation effect on growth of coffee seedlings. Rhizosphere soil Sample was collected from Guwanguwa District Oromiya region. Samples were collected from growing coffee seedling rhizosphere. Random sampling was used to collect soil samples data to isolate PGPR using serial dilution methods. Isolates were allowed for d/f biochemical and physiological test. Each sample was designed in triplicate during laboratory experimentation to avoid variation. Most isolates were efficient in production of IAA, Phosphate solublization, Siderophore production, Hydrogen cyanide and Ammonia production. (PGPR) Isolates were also efficient to show significant effect on growth and growth related parameters of coffee seedling. PGPR inoculated coffee plant showed significance difference at (P≤0.05) compared to control group. (PGPR) isolates collected from coffee rhizosphere were effective on plant growth promotion. Inoculated plants showed Plant height of 11.71 cm-1 plant and un-inoculated plant recorded plant height of 8.87 cm-1 plant. Plant growth promoting bacteria inoculation has shown momentous effect on Coffee Arabica growth. Inoculation of PGPR on the Coffee Arabica Plant has shown substantial effect on increasing the growth & growth related parameters (vigor) of Coffee Arabica. Therefore, it is better to check the effect of PGPR isolates inoculation on yield and yield related parameters (Production) of coffee plant by inoculation on controlled and field trial.
Abstract: Plant growth promoting rhizobia are beneficial bacteria that colonize plant roots and recover plant growth through wide variety of mechanisms. Productivity of coffee crop in Ethiopia is very low (0.7 ton ha-1 green coffee) as compared to other coffee producing countries. The low level of productivity of the crop stems from poor management of the pl...
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Review Article
A Review on the Importance of Producing Single-Cell Protein (SCP) from Agricultural By-products and Waste
Abbas Abedfar*,
Fatemeh Abbaszadeh,
Fatemeh Mardiha
Issue:
Volume 10, Issue 1, March 2025
Pages:
8-15
Received:
4 March 2025
Accepted:
14 April 2025
Published:
22 May 2025
DOI:
10.11648/j.cbe.20251001.12
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Views:
Abstract: The production of Single-Cell Protein (SCP) from agricultural by-products and waste has emerged as a sustainable and cost-effective solution for addressing global protein demand in human and animal nutrition. Agricultural residues such as stalks, fruit peels, and seed remnants serve as low-cost substrates for microbial fermentation, facilitating SCP synthesis. Various microorganisms, including bacteria, fungi, yeasts, and algae, are utilized for their ability to produce high-quality protein with balanced amino acid profiles, potentially replacing traditional plant- and animal-derived proteins. This review explores SCP production processes, microbial sources, and optimal processing techniques, emphasizing their role in sustainable protein supply and environmental impact mitigation. The selection of appropriate microorganisms and fermentation methods significantly influences SCP yield and nutritional composition. SCP production from renewable biomass not only addresses food security challenges but also reduces agricultural waste and greenhouse gas emissions, supporting circular bioeconomy initiatives. Furthermore, SCP application extends beyond nutrition to industrial sectors such as food processing, bio-based materials, and wastewater treatment. Despite its advantages, SCP production faces challenges such as high nucleic acid content, potential microbial toxins, and process scalability. Continued advancements in bioprocess optimization, metabolic engineering, and strain selection are crucial for enhancing SCP efficiency and market viability. This review highlights SCP’s potential as a transformative protein source, offering an environmentally responsible and economically viable alternative to conventional protein production systems.
Abstract: The production of Single-Cell Protein (SCP) from agricultural by-products and waste has emerged as a sustainable and cost-effective solution for addressing global protein demand in human and animal nutrition. Agricultural residues such as stalks, fruit peels, and seed remnants serve as low-cost substrates for microbial fermentation, facilitating SC...
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