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

溶磷菌 肥料 根际细菌 农学 地衣芽孢杆菌 水稻 化学 碱性磷酸酶 作物产量 磷酸盐 酸性磷酸酶 动物科学 园艺 生物 细菌 枯草芽孢杆菌 生物化学 有机化学 根际 基因 遗传学
作者
Pratibha Rawat,Anita Sharma,Deepti Shankhdhar,S. C. Shankhdhar
出处
期刊:Pedosphere [Elsevier BV]
卷期号:32 (5): 752-763 被引量:6
标识
DOI:10.1016/j.pedsph.2022.06.005
摘要

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.
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