AbstractThe distribution of N, Ca, K, Mg and P in Brussels sprout plants has been studied. The calcium content of sprout buttons was very low relative to that in the rest of the plant but, from the analysis of buttons from plants grown on calcareous soils, this low calcium content appeared to be a normal condition and no reason was found to connect low calcium content with ‘internal browning’.The mineral composition of sprout buttons varied much less from position to position on the plant than did the composition of the laminae and the petioles. Laminae of old leaves contained high percentages of Ca, K and Mg. The pattern of distribution of K in the laminae at different positions on the plant was not the same in the plants grown at two sites, and this might be explained by differences in potash status of the two soils.The manurial treatments had larger positional effects on the Ca and N contents of the sprout buttons and of the laminae than for the petioles. The supply of N, whether as fertiliser or farmyard manure, had a greater effect on the mineral composition of both sprout buttons and laminae than had applications of phosphatic or potassic fertilisers.