COMPARATIVE STUDIES OF PLANT GROWTH AND DISTRIBUTION IN RELATION TO WATERLOGGING : VI. THE EFFECT OF MANGANESE ON THE GROWTH OF DUNE AND DUNE SLACK PLANTS.

The article presents a study on the influence of iron and manganese and waterlogging on the growth and distribution of Agrostis stolonifera, Festuca rubra, Carex flacca and Carex nigra. Results showed that in terms of the plants' appearance, there were no visible differences between A. stolonifera and C. flacca in various treatments applied. However, small dark brown spots were observed on some leaves of F. rubra in the manganese treatment. The shoot manganese content of all species, except C. nigra, increased with increasing manganese content of the culture solutions. Also, growth of the Carices was enhanced by increasing the concentration of manganese.