Record ID No. |
4931 |
Author(s) |
Ping XU, Lin-Zhou Liang, Xiao-Ying Dong, Jing Xu, Pei-Kun Jiang, *Ren-Fang Shen , 2014 |
Affiliation |
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China), *Email: rfshen@issas.ac.cn |
Title |
Response of Soil Phosphorus Required for Maximum Growth of Asparagus officinalis L. to Inoculation of Arbuscular Mycorrhizal Fungi |
Source. Vol.(no):Page |
Pedosphere 24(6): 776–782p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Fungal evaluation |
Host |
Asparagus officinalis |
Organism |
Arbuscular Mycorrhiza Fungi (AMF) |
Country |
China, East Asia |
Abstracts |
Fertilizer application efficiently increases crop yield, but may result in phosphorus (P) accumulation in soil, which increases the risk of aquatic eutrophication. Arbuscular mycorrhizal fungi (AMF) inoculation is a potential method to enhance P uptake by plant and to reduce fertilizer input requirements. However, there has been limited research on how much P application could be reduced by AMF inoculation. In this study, a pot experiment growing asparagus (Asparagus officinalis L.) was designed to investigate the effects of AMF inoculation and six levels of soil Olsen-P (10.4, 17.1, 30.9, 40.0, 62.1, and 95.5 mg kg−1 for P0, P1, P2, P3, P4 and P5 treatments, respectively) on root colonization, soil spore density, and the growth and P uptake of asparagus. The highest root colonization and soil spore density were both obtained in the P1 treatment (76% and 26.3 spores g−1 soil, respectively). Mycorrhizal dependency significantly (P < 0.05) decreased with increasing soil Olsen-P. A significant correlation (P < 0.01) was observed between mycorrhizal P uptake and root colonization, indicating that AMF contributed to increased P uptake and subsequent plant growth. The quadratic equations of shoot dry weight and soil Olsen-P showed that AMF decreased the P concentration of soil required for maximum plant growth by 14.5% from 67.9 to 59.3 mg Olsen-P kg−1. Our results suggested that AMF improved P efficiency via increased P uptake and optimal growth by adding AMF to the suitable P fertilization. |