ABSTRACT

About eight Azospirillum isolates were isolated and identified from paddy fields of Theni district. These isolates were studied for their nitrogen fixation ability and IAA production. Further pot experimente were conducted to confirm the efficiency of plant growth promoting activity of all Azospirillum strains on paddy. Various growth parameters such as root, shoot length and root and shoot weight were analyzed. Thus from the study results, it can was inferred that the efficient strain as bioinoculant increasing plant growth and development was found to be S2 strain Azospirillum irakense from Chinnamanur, followed by S7 strain Azospirillum brasilense from Kottur.Utilization of such strains could significantly improve the grain yield and bring out development of farmer friendly bioinoculants thereby reducing pollution. Keywords: Azospirillum, nitrogen fixing bacteria, rice, Theni, paddy fields, PGPR
Publication date: 01/01/2020

https://ijbpas.com/pdf/2020/January/MS_IJBPAS_2019_4910.pdf

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https://doi.org/10.31032/IJBPAS/2020/9.1.4910