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http://dx.doi.org/10.12791/KSBEC.2015.24.4.275

Effect of Drip Irrigation Level on Soil Salinity and Growth of Broccoli (Brassica oleracea L. var. italica) in Saemangeum Reclaimed Tidal Land  

Bae, Huisu (National Institute of Crop Science, RDA)
Hwang, Jaebok (National Institute of Crop Science, RDA)
Kim, Haksin (National Institute of Crop Science, RDA)
Gu, Bonil (National Institute of Crop Science, RDA)
Choi, Inbae (National Institute of Crop Science, RDA)
Park, Taeseon (National Institute of Crop Science, RDA)
Park, Hongkyu (National Institute of Crop Science, RDA)
Lee, Suhwan (National Institute of Crop Science, RDA)
Oh, Yangyeol (National Institute of Crop Science, RDA)
Lee, Sanghun (National Institute of Crop Science, RDA)
Lee, Geonhwi (National Institute of Crop Science, RDA)
Publication Information
Journal of Bio-Environment Control / v.24, no.4, 2015 , pp. 275-280 More about this Journal
Abstract
The objective of this study was to investigate the effect of drip irrigation level on soil salinity and growth of broccoli (Brassica oleracea L. var. italica) at the 'Saemangeum Reclaimed Tidal Land' from April to June, 2015. Drip irrigation was conducted at 1.5, 3.0 and $6.0mm{\cdot}day^{-1}$ level for reduction of resalinization in the plastic vinyl house using 10cm spacing drip irrigation tape. At harvesting stage, the average EC of surface soil was $10.9dS{\cdot}m^{-1}$ for $1.5mm{\cdot}day^{-1}$, $11.5dS{\cdot}m^{-1}$ for $3.0mm{\cdot}day^{-1}$ and $5.1dS{\cdot}m^{-1}$ for $6.0mm{\cdot}day^{-1}$ and was significantly reduced by 52~56% in $6.0mm{\cdot}day^{-1}$ treated plot compared to those in 1.5 and $3.0mm{\cdot}day^{-1}$ plots. The fresh bud weights of 1.5, 3.0 and $6.0mm{\cdot}day^{-1}$ treatment plots were 60.9, 129.1 and $371.3g{\cdot}plant^{-1}$, respectively. The estimated soil EC for 50% yield reduction was $7.6dS{\cdot}m^{-1}$ and the desalinization depth by drip irrigation was 30~40cm in soil profile. The total amount of drip irrigation water was estimated to be 422mm and the daily drip irrigation level was $6.0mm{\cdot}day^{-1}$ for the prevention of resalinization during the broccoli growing period at the 'Saemangeum Reclaimed Tidal Land'. Our results suggested that drip irrigation shows effectiveness on the lowering the soil salinity according to the drip irrigation quantity but it needs more research on this study because dynamics of salts in soil can vary with many factors such as soil physico-chemical properties and seasonal climate.
Keywords
resalinization; salt movement; soil electrical conductivity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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