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Optimization of the Inoculation Dose of Plant-Growth Promoting Bacteria Azospirillum brasilense Strain CW903 Assessed by Tomato, Red Pepper and Rice under Greenhouse Condition  

Madhaiyan, Munusamy (Department of Agricultural Chemistry, Chungbuk National University)
Poonguzhali, Selvaraj (Department of Agricultural Chemistry, Chungbuk National University)
Yim, Woo-Jong (Department of Agricultural Chemistry, Chungbuk National University)
Kim, Kyoung-A (Department of Agricultural Chemistry, Chungbuk National University)
Kang, Bo-Goo (Protected Agricultural Experiment Institute, CBARES)
Sa, Tong-Min (Department of Agricultural Chemistry, Chungbuk National University)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.40, no.4, 2007 , pp. 249-254 More about this Journal
Abstract
Inoculation dose of agriculturally important microbes is an important criterion that decides the establishment and hence their effects on plant growth. Effects of the inoculation dose of Azospirillum brasilense strain CW903 on the growth and nutrient absorption of three different crops, tomato, rice and red pepper were assessed under green house condition. Three different concentrations of A. brasilense strain CW903 ($10^5$, $10^6$ and $10^8cfu\;mL^{-1}$) were applied through seed treatment and through the soil near the root zone (1 mL per plant) at 20 and 30 days after sowing. Positive effects on the growth of tomato, rice and red pepper were found at $10^6$ and $10^8cfu\;mL^{-1}$ inoculation doses of A. brasilense strain CW903. The inoculation dose of $10^8cfu\;mL^{-1}$ of A. brasilense strain CW903 recorded the best effects on growth parameters like shoot and root length and the absorption of important nutrients.
Keywords
Azospirillum brasilense; Nutrient absorption; Plant-growth Promoting bacteria; Red pepper; Rice; Tomato;
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