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KMID : 0613820140240121308
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Journal of Life Science
2014 Volume.24 No. 12 p.1308 ~ p.1315
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Biological Control of Plant Growth Using the Plant Growth-Promoting Rhizobacterium Bacillus mojavensis KJS-3
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Pyo Jae-Sung
Sarmila Shrestha Amatya
Park Song-Hee
Kang Jae-Seon
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Abstract
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Biological control using the plant growth-promoting Rhizobacterium (PGPR) has received significant attention in recent years. PGPR has been linked with promoting growth in economically important crops, such as potatoes, tomatoes, and rice. Bacillus mojavensis KJS-3 (Moja-3), isolated from food waste, possesses antifungal properties against Aspergillus terreus, A. fumagatus, A. flavus, and Fusarium redolense, and it may have potential in the development of products for industrial applications. The main purpose of this study was to determine the effects of spraying the PGPR Bacillus mojavensis KJS-3 on the growth of altari radish (leaf number, leaf length, leaf weight, root length, and rhizome length, adjacent portion diameter, and weight) and lettuce (leaf number, length, width, and weight). Three different concentrations of the foliar spray treatment of B. mojavensis KJS-3 were applied to the altari radish and lettuce: the recommended standard concentration of 1×109 cfu/g, half the standard concentration of 0.5×109 cfu/g, and double the standard concentration of 2×109 cfu/g). The B. mojavensis strain foliar spray treatment increased the growth of the leaves and roots of the altari radish and increased the growth of the lettuce leaves. For both plants, the recommended concentration of B. mojavensis KJS-3 produced better growth than half the standard concentration, and the growth was similar with the double dose. This study demonstrates positive effects of Moja-3, suggesting it may be a potential new bio-fertilizer for improving the growth of altari radish and lettuce.
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KEYWORD
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Altari radish, biological control, lettuce, mojavensis, PGPR (Plant Growth Promoting Rhizobacterium)
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