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Journal of Environmental Science and Technology

Year: 2009 | Volume: 2 | Issue: 1 | Page No.: 68-72
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Authors

E. Mensah

M. Bonsu

S.N. Odai

R. Shoji

N. Kyei-Baffour

E. Ofori

Keywords

Research Article

Influence of Cadmium and Lead Concentrations of Irrigation Water on Dry Matter Yield of Vegetables

E. Mensah, M. Bonsu, S.N. Odai, R. Shoji, N. Kyei-Baffour and E. Ofori
The aim of the study was to find out the extent that cadmium and lead concentrations in irrigation water affect yield of vegetables like cabbage, lettuce and carrots negatively or positively. Experimental plots were established to produce cabbage, carrots and lettuce. The crops were irrigated with irrigation water of 0.05 and 0.1 mg L-1 Cd and 30 and 50 mg L-1 Pb concentrations. Results of analyzed crops samples showed that generally, there was a reduction of dry matter yield of crops produced. Dry matter yield of cabbage and lettuce treated with 0.05 mg L-1 Cd concentration of irrigation water reduced by 56.10 and 10.65%, respectively. At 0.1 mg L-1 Cd irrigation water concentration the reduction of cabbage and lettuce dry matter yield were 61.17 and 16.57%, respectively, compared with values of controlled crops. However, in the case of carrots there were increases in dry matter yield of 268 and 187%, respectively irrigating with water with Cd concentrations of 0.05 and 0.1 mg L-1. With Pb irrigated vegetables, dry matter yield for all the three crops reduced at all Pb irrigation water concentrations. Dry matter yield of Pb treated cabbage reduced by 56.6, 13.54% for lettuce and 35.83% for carrots at 30 mg L-1 Pb irrigation water concentration. At 50 mg L-1 Pb irrigation water concentration, dry matter contents of cabbage, lettuce and carrots reduced by 72.85, 43.23 and 24.57%, respectively, compared with values from controlled plots.
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