Abstract
In alkaline soils, most of the plant nutrients are either lost or become unavailable. Current study investigated the role of
bacterial isolates for enhancing nutrients bioavailability in soil along with improvement in the plant growth characters
under greenhouse conditions. Bacterial strains were characterized on the basis of morphological and biochemical
features. Sequence analysis of 16S rRNA regions confirmed the bacterial identity as Thiobacillus thiooxidans,
Thiobacillus ferrooxidans and Desulfovibrio vulgaris, and sequences were submitted to GenBank (Accessions:
MK123808, MK123809, MK123680, MK123681, MK123861). Pot experiment was performed with 10 treatments
including; T1 (½ N fertilizer), T2 (Full N fertilizer), T3 (NPK fertilizers @ 100-50-30 mg kg‒1
soil), T4 (½ N + T.
thiooxidans), T5 (½ N + T. ferrooxidans), T6 (½ N + D. vulgaris), T7 (½ N + T. thiooxidans + T. ferrooxidans), T8 (½ N
+ T. thiooxidans + D. vulgaris), T9 (½ N + T. ferrooxidans + D. vulgaris), T10 (½ N + T. thiooxidans + T. ferrooxidans +
D. vulgaris). Among all the treatments, T7 enhanced the bioavailability of macro- and micro-nutrients in soil and maize
plants; while T10 significantly improved the plant growth attributes. Study concludes that development and application
of bacterial consortium based biofertilizers could help in improving the plant growth characters and nutrients
bioavailability in plants and soil.
Muhammad Irtaza Sajjad Haider, Riaz Ahmad, Sajjad Hyder, Arshad Mahmood, Azeem Khalid, Ghulam Jilani, Nida Fatima. (2020) ROLE OF BACTERIAL CONSORTIA IN PROMOTING PLANT GROWTH AND NUTRIENTS BIOAVAILABILITY , Pakistan Journal of Agricultural Sciences, Volume 57, Issue 5.
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