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Plant growth promoting Rhizobacteria for plant growth promotion and biocontrol agent against tomato and pepper disease: a review

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Mekonnen H., Fenta L.
World News of Natural Sciences
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2020
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tom 28
Tomato and pepper are some of the most important and widely grown vegetable crops in the world. Like many other vegetables and fruits, tomato and pepper are threatened by biotic and abiotic stresses. Conventional agricultural practices frequently rely on synthetic fertilizers and pesticides that have adverse effects on humans, animals and environments. In this situation, the use of Plant Growth Promoting Rhizobacteria (PGPR) can better crop yield, as these are vital components of soil fertility and plant growth promotion, moreover, they can display antagonistic effects against phytopathogens. Under such circumstances, knowledge about the local bacterial populations, their identification, and their implications for improving management practices (vis-a-vis plant growth promotion and destruction of plant diseases) is very important. Recent advances in microbial and molecular techniques have significantly contributed to introducing many different bacterial genera into soils, onto seeds, roots, tubers or other planting materials to control disease and improve productivity. Plant growth promoting rhizobacteria have been generally applied to high value crops like tomato and pepper. Thus, this review is intended to summaries the literature on plant growth promoting rhizobacteria for growth promotion potential and biocontrol agent against tomato and pepper disease.
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Biocontrol potential of trichoderma and yeast against post harvest fruit fungal diseases: a review

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Fenta L., Mekonnen H., Gashaw T.
World News of Natural Sciences
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2019
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tom 27
Crop protection is vital to maintain high productivity and high quality of crops. Over the past years, people used different fungicides, herbicides and good agronomical practices to control fungal diseases and pests to increase productivity. However, extensive use of chemicals in controlling pests and diseases resulted in negative impacts on the environment, producing inferior quality and harming consumer health. In recent times, diverse approaches are being used to manage a variety of pathogens for control of plant diseases. Biological control is the alternative approach for disease management that is eco-friendly and reduces the amount of human contact with harmful chemicals and their residues. A variety of biocontrol agents including fungi and bacteria have been identified; In this regard, yeast and trichoderma species are the most researched microbes in biocontrol research area. But, despite the presence of many reports on biocontrol, practicability of the biocontrols requires effective adoption and a better understanding of the intricate interactions among the pathogen, plants and environment towards sustainable agriculture. To this end, this review attempts to find and compile previous works done on the role of trichoderma and yeast as a biocontrol agent against postharvest fungal pathogens. Moreover, this review analyzes the mechanisms of biocontrol activity, their means of application and future prospects on the use biogents and the challenges that encounter during the commercialization process.
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Farmer’s perception of soil and water conservation practices in Eastern Hararghe, Ethiopia

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Mekonnen H., Kebede K., Hasen M., Tegegne B.
Zeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego
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2016
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tom 16[31]
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nr 4
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