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The Effect of Indigenous Growth Media on Allanblackia parviflora A. chev in Ghana

Open Journal of Soil Science 2016年第5期6卷 89-97页

作者： Edward Yeboah Daniel Aninagyei Ofori Theresa Peprah Ramni Harmanjeet Jamnadass alain Tsobeng CSIR-Soil Research Institute Academy Post Office Kumasi Ghana CSIR-Forestry Research Institute of Ghana University Post Office KNUST Kumasi Ghana World Agroforestry Centre Nairobi Kenya World Agroforestry Centre Yaoundé Cameroon

Allanblackia parviflora A. chev. also called vegetable tallow tree provides a variety of non-timber forest products of great importance to rural households including shade, timber, medicine and seed oil but attempts have not been made to improve the tree species and increase its production. Consequently, the species is being threatened due to unsustainable exploitation and poor regeneration and cultivation appears as the only viable option. In order to cultivate the species at meaningful scale, it is necessary to establish the optimum range of environmental factors that influence its propagation and growth. This study was therefore designed to investigate Allanblackia growth parameters and bio-accumulation under different growth media in a greenhouse study. The media were: 1) TS = top soil alone, 2) AB soil = Allanblackia soil alone, 3) TS + H = Top soil alone + humus, 4) AB + TS = Allanblackia soil alone + Top soil alone and 5) SAB = Sterilized Allanblackia soil alone. Each treatment was replicated three times in a complete randomized design. The experiment lasted for 18 months. Results showed that Fe was the micronutrient that accumulated greatest in the plant tissue. Among the treatments, Allanblackia soil showed the highest accumulation of Zn in the plant tissue with the top soil showing the least (7.67 mg·kg-l). Humus contributed largely to the bio-accumulation of Cu in the plant tissue. Bio-accumulation of manganese in the plant tissue ranged from 13.30 mg·kg-l to 207 mg·kg-l suggesting difference in manganese absorption by Allanblackia as influenced by the treatments. The growth parameters of Allanblackia parviflory were impacted differently by the growth media. The result was however controversial since no differences were found between growth of seedlings in sterilized Allanblackia soil and Allanblackia soil.

关键词： Allanblackia Bio-Accumulation Growth Media Mycorrhiza

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