Effects of heavy metal(Pb) concentration on some growth parameters of plants grown in lead polluted soil under organic fertilizer amendment

作     者：Ojo M.Oseni Adekunle A.Adelusi Esther O.Dada Abdulfatai B.Rufai 

作者机构：Department of BotanyFaculty of ScienceObafemi Awolowo University Department of Biological Sciences(Ecology and Environmental Studies Unit)Joseph Ayo Babalola University 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2016年第8卷第1期

页      面：36-45页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 07[理学] 08[工学] 0828[工学-农业工程] 0705[理学-地理学] 120405[管理学-土地资源管理] 0713[理学-生态学] 

基　　金：the Department of Botany,Faculty of Science,Obafemi Awolowo University,Ile-Ife,Nigeria Biological Sciences Department,Osun State University,Nigeria 

主　　题：morphological variation organic fertilizer lead biomonitored biomass 

摘      要：This study investigated morphological variation and biomass accumulation that occurred in Sida acuta and Chromolaena odorata plants grown in lead polluted soil under organic fertilizer amendment. The study was carried out in the screen house at the Biological Gardens of the Obafemi Awolowo University, Ile-Ife, Osun State. The experiment was a factorial combination of one heavy metal （Pb） at five levels of concentration （0, 200, 400, 800 and 1,000 mg/kg） in a completely randomized design, and were replicated three times for each of the two plants and two levels （0 g/kg and 9.4 g/kg） of organic fertilizer （OBD-Plus）. Each pot was filled with 5 kg of air-dried and sieved soil and placed on a plastic tray for the collection of excess water. Two weeks after planting, seedlings of uniform height were transplanted from the nursery to experimental pots at the rate of one seedling per pot and grown for 10 weeks. The growth parameters of the plants were biomonitored for 7 weeks. After 10 weeks of treatment, the plants were harvested and dried to calculate the biomass accumulation. The two plant species performed better under fertilizer application than without it. For each of the plant species the growth parameters decreased as the levels of Pb concentration increased. Furthermore, the plants＇ biomass decreased significantly （p 〈0.05） as the levels of Pb concentration increased. The organic fertilizer helped to improve the plants＇ performance in lead-polluted soil.