Coupling phosphate-solubilizing bacteria (PSB) with inorganic phosphorus fertilizer improves mungbean (<i>Vigna radiata</i>) phosphorus acquisition, nitrogen fixation, and yield in alkaline-calcareous soil
<p dir="ltr">To overcome the problems associated with soil phosphorus (P) insolubility, <u>soil inoculation</u> with phosphate-solubilizing bacteria (PSB) can be used. In a field experiment, we evaluated the efficacy of PSB in enhancing mungbean P acquisition, nitrogen (N...
محفوظ في:
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| مؤلفون آخرون: | , , , , |
| منشور في: |
2022
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| الملخص: | <p dir="ltr">To overcome the problems associated with soil phosphorus (P) insolubility, <u>soil inoculation</u> with phosphate-solubilizing bacteria (PSB) can be used. In a field experiment, we evaluated the efficacy of PSB in enhancing mungbean P acquisition, nitrogen (N) fixation, and morphological and yield traits in alkaline-calcareous soil when added together with P as single superphosphate (SSP) or rock phosphate (RP) at 45 or 90 kg P<sub>2</sub>O<sub>5</sub> ha<sup>−1</sup>. Coupling PSB with mineral P fertilizers (SSP & RP) improved P use efficiency, mungbean P acquisition, N2 fixation, <u>nodulation</u>, NP uptake, and the morphological and yield-related traits of mungbeans compared with non-fertilized controls and plots received P from mineral sources alone. Soil PSB inoculation with mineral P also improved post-harvest soil fertility relative to pre-harvest by improving <u>soil organic matter</u> from 0.61% to 0.70%, lowering pH from 7.74 to 7.68, and improving soil total N from 0.04 to 0.09%, ABDTPA-extractable P from 2.07 to 3.44 mg kg<sup>−1</sup>, and potassium (K) concentrations from 100.27 to 129.45 mg kg<sup>−1</sup>. When combined with PSB, RP generally performed better than SSP. Moreover, there was a significant correlation between soil N and plant N, while the correlation between soil P and plant P was non-significant. The correlation between soil organic matter content and NP uptake by mungbeans was also non-significant. Therefore, adding P as RP at 45–90 kg ha<sup>−1</sup>, together with PSB inoculation, can be recommended for improving mungbean P acquisition, use efficiency, optimum N<sub>2</sub> fixation, and yield in alkaline-calcareous soils.</p><h2>Other Information</h2><p dir="ltr">Published in: Heliyon<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.heliyon.2022.e09081" target="_blank">https://dx.doi.org/10.1016/j.heliyon.2022.e09081</a></p> |
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