Section 1: Chemistry of iron in soil and nutrient solutions.- Solubility and dissolution of iron oxides.- Iron oxide solubilization by organic matter and its effect on iron availability.- Manure and peat based iron-organo complexes. I. Characterization and enrichment.- Manure and peat based iron-organo complexes. II. Transport in soils.- Distribution of soluble iron and zinc in leachates of municipal wastes.- Reaction of FeEDDTA and FeEDDHA applied to calcareous soils.- Stability of chelates in nutrient solutions for drip irrigation.- Free metal activity and total metal concentrations as indices of micronutrient availability to barley (Hordeum vulgare (L.) `Klages').- Section 2: Physiological and genetic aspects of iron nutrition.- Recent advances in breeding for improving iron utilization by plants.- Photochemical mobilization of ferritin iron.- Ferric chelate reduction by suspension culture cells and roots of soybean: A kinetic comparison.- Factors affecting cation-anion uptake balance and iron acquisition in peanut plants grown on calcareous soils.- Physiological plant age-dependent biochemical indicators and physiological parameters of iron nutrition.- A genetically related response to iron deficiency stress in muskmelon.- Variability of sunflower inbred lines to iron deficiency stress.- Effects of soil temperature on root and shoot growth traits and iron deficiency chlorosis in sorghum genotypes grown on a low iron calcareous soil.- Contact with ballotini (glass spheres) stimulates exudation of iron reducing and iron chelating substances from barley roots.- Investigations on iron uptake and reduction by excised roots of different grapevine rootstocks and a V. vinifera cultivar.- Characterization of the tolerance to iron chlorosis in different peach rootstocks grown in nutrient solution. I. Effect of bicarbonate and phosphate.- Characterization of the tolerance to iron chlorosis in different peach rootstocks grown in nutrient solution. II. Iron stress response mechanisms.- Section 3: Phytosiderophores in iron nutrition.- The role of phytosiderophores in acquisition of iron and other micronutrients in graminaceous species: An ecological approach.- Enhancement of ferric-mugineic acid uptake by iron deficient barley roots in the presence of excess free mugineic acid in the medium.- Why are young rice plants highly susceptible to iron deficiency?.- Comparative evaluation of iron solubilizing substances (phytosiderophores) released by oats and corn: Iron-efficient and iron-inefficient plants.- Iron-efficient and iron-inefficient oats and corn respond differently to iron-deficiency stress.- Mobilization of iron by phytosiderophores as affected by other micronutrients.- Section 4: Microbial-plant interaction in the rhizosphere and their role in iron nutrition.- Mechanisms of iron acquisition from siderophores by microorganisms and plants.- Recent advances in uptake and storage of iron in fungi.- Iron uptake and metabolism in the rhizobia/legume symbioses.- A high-affinity iron transport system of Rhizobium meliloti may be required for efficient nitrogen fixation in planta.- Responses of nitrogen-fixing and nitrate-supplied alfafa (Medicago sativa L.) to iron chelates in an alkaline hydroponic medium.- The role of active Bradyrhizobium japonicum in iron stress response of soybeans.- Siderophores of Pseudomonas putida as an iron source for dicot and monocot plants.- Development of a detection system for ferric pseudobactin using monoclonal antibodies.- Pyoverdin production by the plant growth beneficial Pseudomonas strain 7NSK2: Ecological significance in soil.- Effect of pH, L-ornithine and L-proline on the hydroxamate siderophore production by Hymenoscyphus ericae, a typical ericoid mycorrhizal fungus.- The requirement of chrysobactin dependent iron transport for virulence incited by Erwinia chrysanthemi on Saintpaulia ionantha.- Section 5: Correction of iron deficiency.- Correcting iron deficiencies in annual and perennial plants: Present technologies and future prospects.- Rational approaches to control of iron deficiency other than plant breeding and choice of resistant cultivars.- Iron deficiency in mango trees: I. New approaches to fertilization.- Iron deficiency in mango trees: II. Iron uptake mechanisms.- Correction of lime-induced chlorosis in container-grown citrus trees by peat and iron sulfate application to small soil volumes.- Simultaneous application of peanut rhizobium inoculants and an iron chelate (FeEDDHA) mixed in the inoculation tank.- Iron-index in horticultural crops.- Section 6: Symposium summary and future research.- Symposium summary and future research areas.