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Position: Home > Articles > Effects of inorganic fertilizers on biological nitrogen fixation and seedling growth of some agroforestry trees in Bangladesh Journal of Forestry Research 2008,19 (4) 303-306

Effects of inorganic fertilizers on biological nitrogen fixation and seedling growth of some agroforestry trees in Bangladesh

作者：

Mohammad Belal Uddin;Mohammed Abu Sayed Arfin Khan;Sharif A. Mukul;Mohammed Kamal Hossai

单位：

Department of Biogeography, University of Bayreuth, Bayreuth, Germany;Dep. of For. and Env. Sci School of Agriculture and Mineral Sciences, Shahjalal University of Science and Technology, Sylhet, Bangladesh;Institute of Forestry and Environmental Sciences, University of Chittagong, Chittagong, Banglades

关键词：

seedling growth;agroforestry;seed germination;biological nitrogen fixation;nodulation capabilit

摘要：

The effects of different inorganic fertilizers (Urea and Triple Super Phosphate (TSP)) on seedling growth and modulation capabilities of Pour agroforestry tree species (Albizia chinensis, A. saman, Acacia nilotica and Sesbania sesban) were compared. The modulation of these seedlings were treated with different fertilizer treatments (at the rate of urea 40 kg.hm(-2), urea 80 kg.hm(-2), TSP 40 kg.hm(-2), TSP 80 kg.hm(-2), (urea+TSP) 40 kg.hm(-2-) and (urea+TSP) 80 kg.hm(-2)) after one month of seed germination. The results revealed that the seedling growth was enhanced significantly with moderate fertilizer treatment. In some cases, the higher levels of fertilizers reduced the seedling growth. The study also revealed that the modulation in nodule number and size was significantly inhibited by the application of N fertilizer (Urea), while it was increased significantly with the application of P fertilizer (TSP). This study improved our understanding and provided insights that would be useful to the farmers in their efforts to amend the soil with inorganic fertilizers in order to enhance plant growth and biological nitrogen fixation.

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Effects of inorganic fertilizers on biological nitrogen fixation and seedling growth of some agroforestry trees in Bangladesh

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