Effect of Plant Vetiver, Typha and Reed on Improvement of Paddy Field Drains (Case study: Guilan province)

Document Type : Original Article

Authors

1 Assistant Professors of Department of Water Engineering, Faculty of Agricultural Sciences, University of Guilan and Depttment of Water Engineering and Environment, Caspian Sea Basin Research Center

2 M.Sc. student of Department of Water Engineering, Faculty of Agricultural Sciences, University of Guilan

Abstract

Salinity and nitrate of drainage water are the main reasons of agricultural pollutant. Decentralization of agriculture land, variety of contaminants and the high volume of agricultural waste led to reduce the performance of conventional strategies of nitrate and salinity removal. This study aimed to evaluate the phytoremediation strategy to reduce salinity and nitrate in agricultural drainage, and reduced ability to absorb nitrate salt by three Vetiver, Typha and Reed was investigated in the region of Guilan province in a randomized complete block design with three replications. So 9 cylindrical boxes with 50 cm diameter and 80 cm height and Silty loam soil texture were prepared and after planting, two treatments of nitrate concentrations including of 10 and 20 mg/l nitrate were exposed during testing. Ability of nitrate and salinity reduction in two depths 35 and 70 cm was determined by measuring the amount of nitrate and salinity in soil extracts. Results showed that the highest amount of nitrate uptake of Reed in concentration 10 mg/l and in 70 cm depth was 98.59% and the lowest nitrate uptake in concentration 20 mg/l and in 70 cm depth was 34.96% for Vetiver. In addition, three plants were significant differences in reduction of pH but the salinity reduction was not significant in 5% level.

Keywords

References

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Iranian Journal of Irrigation & Drainage
Volume 11, Issue 1 - Serial Number 61
May and June 2017
Pages 113-127

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