Growth and physiological attributes of hydroponically grown bananas inoculated with plant growth promoting rhizobacteria
2000
Zulkifli H. Shamsuddin | Md. Abdul Baset Mia | Zakaria Wahab | Marziah M.
An experiment was undertaken to observe the effect of plant growth promoting rhizobacterial inoculation on growth and physiological attributes of bananas grown under hydroponics condition. The design of the experiment was completely randomised with three replications. The following eight treatments were imposed for the experiment: T1 (control, no N and no PGPR), T2 (control, 33% N and no PGPR), T) (control, 100% N and no PGPR), T4 (no N + Azospirillum brasilense (strain Sp7)), T5 (no N + a locally isolated Bacillus sp. (strain UPMB 1)), T6 (+1/3 N + Sp7), T7 (+1/3 N + UPMB 10) and T8 (100% N+ UPMB10). One tissue-cultured banana plantlet cv. 'Berangan' (Musa spp., dessert type) was planted per tank (1000-L polyethylene tank). The tanks were aerated with air pumps at six-hourly intervals to ensure an uninhibited root respiration and bacterial growth. The results suggested that inoculated plants significantly increased the plant height, chlorophyll content (SPAD value) and leaf area especially with 33% N-fertilization. Net photosynthesis and stomatal conductance were also positively influenced by PGPR inoculation.
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