Journal of Food, Agriculture and Environment

Response of Gliricidia sepium to arbuscular mycorrhizal fungus inoculation and P fertilization in sterile and non-sterile soils

Author(s):

Iniobong E. Okon ^1*, O. Osonubi ², M. G. Solomon ³

Recieved Date: 2006-12-11, Accepted Date: 2007-06-20

Abstract:

A pot experiment was conducted to investigate the effects of arbuscular mycorrhizal fungus (AMF), Glomus deserticola, on the growth of Gliricidia sepium under P 0, 50 and 100 mg kg^-1 levels of phosphorus fertilization. Inoculation with AMF increased dry matter yield at all levels of applied phosphorus in both sterile and non-sterile soils while P fertilization at 100 mg kg^-1 soil level in conjunction with AMF inoculation increased the dry matter yield by 269.2 and 107.7% in sterile and non-sterile soils respectively. P fertilization increased arbuscular mycorrhizal fungi colonization but decreased mycorrhizal dependency. Colonization by indigenous AMF was, however, significantly (p<0.01) reduced at P 100 mg kg^-1 soil fertilization. Foliar N, P and K yields were significantly (p<0.01) increased by AMF inoculation.

Keywords:

Gliricidia sepium, mycorrhiza, phosphorus, sterile and non-sterile soils

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Journal: Journal of Food, Agriculture and Environment
Year: 2007
Volume: 5
Issue: 3&4
Category: Environment
Pages: 430-433

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