This review discusses the complex interactions between salinity and mineral nutrition in horticultural crops. Salinity can negatively affect crop performance by causing nutrient disorders due to reduced availability, competitive uptake, transport, or partitioning within the plant. For example, salinity reduces phosphate uptake and accumulation in crops grown in soils, while in solution cultures, it may primarily result from competitive interactions. Salinity dominated by Na+ salts not only reduces Ca²+ availability but also reduces Ca²+ transport and mobility to growing regions of the plant, affecting the quality of vegetative and reproductive organs. Salinity can directly affect nutrient uptake, such as Na+ reducing K+ uptake or Cl- reducing NO3- uptake. Salinity can also cause complex interactions that affect plant metabolism, susceptibility to injury, or internal nutrient requirements. Despite many studies showing that salinity reduces nutrient uptake and accumulation or affects nutrient partitioning within the plant, little evidence exists that adding nutrients at levels above those considered optimal in non-saline environments improves crop yield. Nutrient additions have been more successful in improving crop quality, such as correcting Na-induced Ca²+ deficiencies by supplemental calcium. Nutrient additions may also reduce the incidence of injury, as observed in the reduction of Cl-toxicity symptoms in certain tree crops by nitrate applications. It is reasonable to believe that numerous salinity-nutrient interactions occur simultaneously, but whether they ultimately affect crop yield or quality depends on the salinity level and composition of salts, the crop species, the nutrient in question, and environmental factors. The availability and uptake of nutrients by plants in saline environments are affected by many factors in the soil-plant environment. The solid phase of the soil and the concentration and composition of solutes in the soil solution control the activity of the nutrient ion. Soil solution pH and pE influence the speciation and availability of certain nutrients. The concentration and ratios of accompanying elements can influence the uptake and transport of a particular nutrient and indirectly affect the uptake and translocation of others. These interactions are complicated by numerous environmental factors such as aeration, temperature, and stresses both biotic and abiotic. Crops vary not only in the rate at which they absorb an available nutrient element but also in the manner by which they distribute the element spatially within the plant. Certain ions in the salinising media such as sodium can have a profound effect on calcium mobility and distribution within certain plant organs. Similar examples can be made for other essential nutrients. The interactive nature affecting nutrient availability, uptake, and distribution are topics that are highly complex in the absence of salinity or other stresses. The presence of salinity adds a new level of complexity to the mineral nutrition of crops. This paper reviews and synthesises the literature that pertains to salinity and mineral nutrition of horticultural crops. The review addresses the major nutrient elements and the micronutrients individually. The review includes references to both soil and solution culture studies as well as those using either mixed orThis review discusses the complex interactions between salinity and mineral nutrition in horticultural crops. Salinity can negatively affect crop performance by causing nutrient disorders due to reduced availability, competitive uptake, transport, or partitioning within the plant. For example, salinity reduces phosphate uptake and accumulation in crops grown in soils, while in solution cultures, it may primarily result from competitive interactions. Salinity dominated by Na+ salts not only reduces Ca²+ availability but also reduces Ca²+ transport and mobility to growing regions of the plant, affecting the quality of vegetative and reproductive organs. Salinity can directly affect nutrient uptake, such as Na+ reducing K+ uptake or Cl- reducing NO3- uptake. Salinity can also cause complex interactions that affect plant metabolism, susceptibility to injury, or internal nutrient requirements. Despite many studies showing that salinity reduces nutrient uptake and accumulation or affects nutrient partitioning within the plant, little evidence exists that adding nutrients at levels above those considered optimal in non-saline environments improves crop yield. Nutrient additions have been more successful in improving crop quality, such as correcting Na-induced Ca²+ deficiencies by supplemental calcium. Nutrient additions may also reduce the incidence of injury, as observed in the reduction of Cl-toxicity symptoms in certain tree crops by nitrate applications. It is reasonable to believe that numerous salinity-nutrient interactions occur simultaneously, but whether they ultimately affect crop yield or quality depends on the salinity level and composition of salts, the crop species, the nutrient in question, and environmental factors. The availability and uptake of nutrients by plants in saline environments are affected by many factors in the soil-plant environment. The solid phase of the soil and the concentration and composition of solutes in the soil solution control the activity of the nutrient ion. Soil solution pH and pE influence the speciation and availability of certain nutrients. The concentration and ratios of accompanying elements can influence the uptake and transport of a particular nutrient and indirectly affect the uptake and translocation of others. These interactions are complicated by numerous environmental factors such as aeration, temperature, and stresses both biotic and abiotic. Crops vary not only in the rate at which they absorb an available nutrient element but also in the manner by which they distribute the element spatially within the plant. Certain ions in the salinising media such as sodium can have a profound effect on calcium mobility and distribution within certain plant organs. Similar examples can be made for other essential nutrients. The interactive nature affecting nutrient availability, uptake, and distribution are topics that are highly complex in the absence of salinity or other stresses. The presence of salinity adds a new level of complexity to the mineral nutrition of crops. This paper reviews and synthesises the literature that pertains to salinity and mineral nutrition of horticultural crops. The review addresses the major nutrient elements and the micronutrients individually. The review includes references to both soil and solution culture studies as well as those using either mixed or