Journal of Taiwan Agricultural Research

Author:Su-Chen Lin, Shan-Ney Huang, Kun-Huang Houng and Chi-Guang Wu

Abstract:

    The main purpose to design this experiment was to evaluate the inoculation effect of VA mycorrhizal fungi (VAMF), phosphate-solubilizing (PSB) and free-living nitrogen-fixing (NFB) bacteria, and the amendment of rice bran on the growth of Citrus maxima and wentan pomelo in calcareous medium. The results indicated that without amendment of rice bran did wentan pomelo stock stunt. However, inoculation of VA mycorrhizal fungus solely did not enhance plant growth. Amendment of rice bran could highly improve the growth of wentan pomelo stock. An incorporated use of rice bran and microbial inoculation (VAMF and other bacteria) showed synergistic effect. The biomass of wentan pomelo, which had been grafted for one year and treated with rice bran and other microbial inoculants in the growth medium was two times as much as that of plants treated by rice bran only. Among these microbial treatments, the leaf N and P of wentan pomelo were significantly higher than those treated by rice bran only. A triple inoculation of VAMF, PSB and NFB or a dual inoculation of VAMF and NFB, and an incorporated amendment with rice bran could significantly promote the growth of Citrus maxima and wentan pomelo especially in alkaline medium with low organic matter and phosphorus.

Key words:Wentan pomelo, Bran, Arbuscular mycorrhizal fungi, Free-living nitrogen-fixing bacteria, Phosphate-solubilizing bacteria

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