Java citronella suffers from chlorosis of the younger leaves, particularly in tropical climatic conditions. An Fe-efFicient genotype of this species was grown in Solutions containing 0 to 44.80 g(Fe) m'^ in controlled glasshouse conditions. In comparison with normál Fe nutrition (5.60 g m"^), low (0 - 1.40 g m'^) or high (22.40 - 44,80 g m*^) iron nutrition influenced fresh and dry matter yield, plant height, total essential oil and citronellol contents, chlorophyll (Chl) content, net photosynthetic and transpiration rates, and Fe uptake. Largest differences were found in saccharide and Chl a and h contents and Chl a/h ratio, and stomatal resistance. Significarít positive correlations were observed between fresh matter, citronellol content, dry and fresh matter yields and total essential oil content.