Table of Contents
ISRN Agronomy
Volume 2012, Article ID 719432, 6 pages
http://dx.doi.org/10.5402/2012/719432
Research Article

Effect of Lime and Farmyard Manure on the Concentration of Cadmium in Water Spinach (Ipomoea aquatica)

Department of Soil Science, University of Chittagong, Chittagong 4331, Bangladesh

Received 3 April 2012; Accepted 10 May 2012

Academic Editors: M. Arias-Estévez, N. Bellaloui, R. Burt, R. Islam, and Y. Ito

Copyright © 2012 Subash Chandra Shaha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An experiment was conducted to investigate the effect of lime and farmyard manure on the concentration of cadmium in water spinach. Water spinach (Ipomoea aquatica cv. Kankon) was grown in sandy loam soil spiked with 5 mg Cd K g 1 with lime (L) and farmyard manure (M) amendments. The treatments consisted of control, four levels of L (5, 10, 15, and 20 t  h a 1 ), M (5, 10, 15, and 20 t  h a 1 ), and their combinations (5 + 5, 10 + 10, 15 + 15, and 20 + 20 t  h a 1 ). Growth parameters of water spinach increased significantly with the addition of lime and farmyard manure in the soil. Lime addition to soil decreased Cd concentration in both shoot and root of water spinach. In control (0 + 0), Cd concentration was 62.67 mg  k g 1 in shoot, and 135.5 mg  k g 1 in root. Cadmium concentration decreased by 72, 15, and 66% over the control in shoot and 82, 28, and 76% in the roots correspondingly with the highest rate of lime (20 t  h a 1 ), manure (20 t  h a 1 ), and lime plus manure combinations (20 t  h a 1 + 20 t  h a 1 ). The results imply that 5 to 10 t  h a 1 lime could be used in Cd-contaminated soils to reduce Cd uptake by agricultural crops.