Effects of Arbuscular Mycorrhizal Fungal Inoculation and Phosphorous Addition on Maize Photosynthesis and Growth in a Reclaimed Soil of Mining Area.

Hao, X.J., Hong, J.P., Zhang, T.Q., Li, J.R., Gao, W.J., and Zheng, Z.M. (2014). "Effects of Arbuscular Mycorrhizal Fungal Inoculation and Phosphorous Addition on Maize Photosynthesis and Growth in a Reclaimed Soil of Mining Area.", Communications in Soil Science and Plant Analysis, 45(18), pp. 2413-2428. doi : 10.1080/00103624.2014.912295  Access to full text

Abstract

Crop phosphorus (P) and water utilization and growth in mining-disturbed land can be improved through inoculation of arbuscular mycorrhizal fungi (AMF). Researchers evaluated the effects of AMF and fertilizer P on maize P and water utilization and maize growth in a mining-disturbed loess soil. Compared with non-AMF (NAMF), AMF increased shoot and root P contents by 16.7 and 72.9%, respectively, net photosynthetic rate (P{sub}n{/sub}) by 12.2%, and P-use efficiency by 44.3%. Regardless of AMF inoculation, maize P content increased linearly with the increases of P rate, whereas root colonization, P{sub}n{/sub}, and shoot biomass responded quadratically to P rate. Measurements of photosynthesis-related parameters decreased with the increases of P rate, but the extents of decline reduced with AMF relative to NAMF. Water-use efficiency increased linearly with increases of P rate, but the effect was reduced with AMF. Inoculation of AMF promoted maize growth and reduced the dependency on P addition.

Date modified: