Pedosphere 32(5): 752--763, 2022
ISSN 1002-0160/CN 32-1315/P
©2022 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Improvement of phosphorus uptake, phosphorus use efficiency, and grain yield of upland rice (Oryza sativa L.) in response to phosphate-solubilizing bacteria blended with phosphorus fertilizer |
Pratibha RAWAT1, Anita SHARMA2, Deepti SHANKHDHAR1, Shailesh Chandra SHANKHDHAR1 |
1Department of Plant Physiology, College of Basic Sciences & Humanities, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar-263145 (India);
2Department of Microbiology, College of Basic Sciences & Humanities, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar-263145 (India) |
| ABSTRACT |
| Phosphorus (P) limitation in soil is a major concern for crop productivity. However, the use of chemical fertilizer is hazardous to the environment and costly. Therefore, the use of phosphate-solubilizing bacteria (PSB) is an eco-friendly approach for a sustainable agricultural system. In the present study, a field trial was conducted for two consecutive years to study the effects of three PSB strains isolated, Bacillus licheniformis, Pantoea dispersa, and Staphylococcus sp., with different P fertilizer rates on P uptake, P use efficiency (PUE), and grain yield of rice. The activities of soil enzymes were also studied in relation to PSB treatments. Comparative analysis of the yield and biochemical parameters revealed that inoculation of PSB consortium could reduce almost 50% of the recommended P dose in rice cultivation. Three PSB strains in combination with 50% P dose was most effective and showed the highest increases in P uptake and PUE as compared to the uninoculated control. Moreover, the PSB consortium combined with 50% P dose contributed to 50.58% and 35.64% yield increases compared to the uninoculated control for 2018 and 2019, respectively. Significant increases in the activities of soil dehydrogenase, alkaline phosphatase, and acid phosphatase were also recorded under PSB treatment. |
| Key Words: bacterial inoculation,enzyme activity,phosphate solubilization index,recommended P dose,soil dehydrogenase,soil phosphatase |
| Citation: Rawat P, Sharma A, Shankhdhar D, Shankhdhar S C. 2022. Improvement of phosphorus uptake, phosphorus use efficiency, and grain yield of upland rice (Oryza sativa L.) in response to phosphate-solubilizing bacteria blended with phosphorus fertilizer. Pedosphere. 32(5): 752-763. |
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