Karmoker, J L Sulphate deprivation depresses the transport of nitrogen to the xylem and the hydraulic conductivity of barley (Hordeum vulgare L.) roots. [electronic resource] - Planta Sep 1991 - 269-78 p. digital Publication Type: Journal Article ISSN: 0032-0935 Standard No.: 10.1007/BF00194070 doi