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Zinc solubilizing bacteria (ZSB) improve crop productivity by increasing
bioavailability of zinc (Zn). A pot experiment was conducted to evaluate the
effectiveness of five promising ZSB strains on the productivity of okra. The
experiment was conducted using Completely Randomized Design (CRD) with four
replications. Data regarding physiological, growth, and yield parameters were
collected and statistically analyzed. Results showed that inoculation of ZSB
strains significantly increased these attributes of okra. Inoculation of strain
Bacillus sp. ZM20 followed by Bacillus aryabhattai ZM31 was significantly more
effective among the tested ZSB strains. Strain Bacillus sp. ZM20 improved
relative water contents up to 17%, chlorophyll a and b up to 67 and 71%,
respectively, plant height up to 30%, shoot fresh weight up to 19%, shoot dry
weight up to 31%, root length up to 79%, root fresh weight up to 58%, root dry
weight up to 66%, number of fruits plant-1
up to 89%, fruit fresh weight up to 79%,
fruit dry weight up to 78%, concentration of N up to 20%, P up to 65%, K up to
20%, and protein contents up to 20% as compared to uninoculated control. It is
concluded that inoculation of ZSB strains like Bacillus sp. ZM20 and Bacillus
aryabhattai ZM31 is an effective approach to improve the productivity of okra
(Abelmoschus esculentus L.).
ISHRAT FATIMA, MOAZZAM JAMIL, AZHAR HUSSAIN, MUHAMMAD ZAHID MUMTAZ. (2018) Zinc solubilizing Bacillus sp. ZM20 and Bacillus aryabhattai ZM31 promoted the productivity in Okra (Abelmoschus esculentus L.), Biologia – Journal of Biological Society of Pakistan, Volume 64 (II), Volume 64 (II).
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