E Corresponding author. Email: lynda. This study documents changes in yield, growth, soil salinity EC e and leaf sodium Na and chlorine Cl concentrations in mature Valencia orange [ Citrus sinensis L. Osbeck ] trees on sweet orange Citrus sinensis rootstock in response to increased levels of Na and Cl in irrigation water. Four levels of salt, ranging from the river-water control 0. The high leaching fractions were achieved as a result of freely draining soils and good irrigation management, and allowed us to maintain low to moderate levels of soil salinity throughout the trial and minimised the effect of salt treatment on fruit yield.
By contrast, leaf Na and Cl concentrations in the highest salt treatment continued to increase over the first 4 years. Additional keywords: salinity, citrus, leaching, nutrients, nitrogen, potassium, phosphorus.
We gratefully acknowledge the skilful and dedicated assistance of many colleagues over the years of this experiment, especially Wayne Shields and Sue Cox. We thank Corey Bradshaw for statistical advice. Physiologia Plantarum 86 , β Soil Science , β Wildlife Research 28 , β Irrigation Science 11 , β Irrigation Science 6 , 63β Irrigation Science 12 , β Crossref Shamouti orange trees. Journal of Horticultural Science and Biotechnology 78 , β Journal of Horticultural Science and Biotechnology 77 , β Scientia Horticulturae 78 , β Australian Journal of Experimental Agriculture 29 , β Australian Journal of Agricultural Research 58 , β Grieve AM, Walker RR Uptake and distribution of chloride, sodium and potassium ions in salt-treated citrus plants.
Australian Journal of Agricultural Research 34 , β Levy Y, Syvertsen J Irrigation water quality and salinity effects in citrus trees. Horticultural Reviews 30 , 37β Agricultural Water Management 56 , β Osbeck to saline irrigation water. Canopy characteristics and seasonal patterns in leaf osmotic potential, carbohydrates and ion concentrations. Australian Journal of Agricultural Research 40 , β Crossref Citrus sinensis L. Physiologia Plantarum 78 , β Crossref Citrus species in response to salinisation: and analysis of photosynthesis and water relations for different rootstockβscion combinations.
Osbeck, on rootstocks with different salt exclusion characteristics. Australian Journal of Plant Physiology 14 , β Citrus sinensis L. ASCE No. KK Tanji pp. Tree Physiology 12 , β Journal of the Irrigation and Drainage Division , β McIntyre DS Sample preparation.
