Nutritional disorders in chrysanthemums

This book is a guide to diagnosing nutritional disorders in chrysanthemums. Deficiencies and toxicities are included, fifteen in all. Colour plates and descriptions are given for nitrogen, phosphorus, potassium, magnesium, calcium, sulphur, boron, copper, manganese, iron and zinc deficiency and for nitrogen, boron, manganese and zinc excess. As many of the nutritional nutritional disorders do not occur in practice, they were induced by growing chrysanthemums in peat moss substrates, in nutrient solution or in rock wool. Symptoms may differ considerably between cultivars. Conditions pertaining to mineral nutritional disorders and methods of control are briefly described. Leaf nutrient concentrations typical for the various deficiencies and toxicities are reported and compared with literature data. In the trials young, just fully grown leaves were sampled for foliar analysis. Supplementary data were obtained from published report