Pedosphere 16(6): 762--769, 2006
ISSN 1002-0160/CN 32-1315/P
©2006 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Effect of saline aquaculture effluent on salt-tolerant jerusalem artichoke (Helianthus tuberosus L.) in a semi-arid coastal area of China |
ZHAO Geng-Mao , LIU Zhao-Pu, CHEN Ming-Da and KOU Wei-Feng |
| College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095 (China). E-mail: gmaozhao@yahoo.com.cn |
| ABSTRACT |
| An experiment with six treatments: CK1 (rainfed), CK2 (irrigated with freshwater), and 4 treatments of saline aquaculture effluent blended with brackish groundwater at different ratios of 1:1, 1:2, 1:3, and 1:4 (v/v) was carried out during 2004 to assess the effect of saline aquaculture effluent on plant growth and soil properties in the Laizhou region, Shandong Province, China and to determine an optimal salinity threshold for aquaculture effluent. Cumulative evapotranspiration for the saline aquaculture effluent irrigation and non-irrigation treatments was lower than that for the freshwater irrigation treatment. Soil electrical conductivity was higher with respect to saline aquaculture effluent irrigation treatment compared to that with respect to non-irrigation or freshwater irrigation treatment. For Jerusalem artichoke (Helianthus tuberosus L.), in comparison to the freshwater treatment, plant height and aboveground biomass for the 1:3 and 1:4 treatments were constrained, whereas stem width and root biomass were enhanced. Concomitantly, higher tuber yield was obtained for the 1:3 and 1:4 treatments compared to that for CK1 and 1:1 treatments. Nitrogen and phosphorus were higher in tubers of the 1:4 treatment. This study demonstrated that saline aquaculture effluent could be used successfully to irrigate Jerusalem artichoke with higher tuber yield and nutrient removal. |
| Key Words: Jerusalem artichoke (Helianthus tuberosus L.), nutrient uptake, saline aquaculture effluent irrigation, soil properties, tuber yield |
| Citation: Zhao, G. M., Liu, Z. P., Chen, M. D. and Kou, W. F. 2006. Effect of saline aquaculture effluent on salt-tolerant jerusalem artichoke (Helianthus tuberosus L.) in a semi-arid coastal area of China. Pedosphere. 16(6): 762-769. |
|
View Full Text
|
|
|
|
