Abstract
The contents of calcium, magnesium, potassium and phosphorus in the fruit of the kiwifruit (Actinidia chinensis Planch.) were measured at intervals over the growing period. The maximum calcium content was reached sooner than for the other nutrients; potassium and phosphorus continued to move into the fruit over the whole growmg season. An assessment of cation distribution in the mature fruit showed a marked gradient of calcium content, being highest at the basal end of the fruit. Potassium and magnesium did not show such marked patterns. The skin and seeds (with surrounding flesh) had the highest concentrations of calcium and magnesium; potassium was proportionately higher in the flesh than the other nutrients.