Effect of Soil Salinity on Nitrate Accumulation of Lettuce
2004
Jin, S.J. (Daegu University, Gyeongsan, Republic of Korea) | Cho, H.J. (Daegu University, Gyeongsan, Republic of Korea) | Chung, J.B. (Daegu University, Gyeongsan, Republic of Korea), E-mail: [email protected]
Accumulation of nitrate in edible crops is undesirable due to potential risks to human health. Since nitrate has a role in the osmotic regulation of plants, salt accumulation in soil is expected to stimulate nitrate accumulation in plants. Lettuce (Lactuca sativa L.) was grown in soils of different salinities, 9.6 and 4.49 dS m-¹, in a greenhouse, and the effect of soil salinity on nitrate accumulation in lettuce was investigated. Content of nitrate in the lettuce increased significantly as soil salinity increased under low light intensity and ample supply of nitrate in root media.
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