MN DEFICIENCY AND FOLIAR ANALYSIS IN CONTAINER-GROWN YOUNG APPLE PLANTS.

In young apple plants (cv "Golden Delicious"), container-grown and fertilized by fertirrigation, a chlorosis apparently due to Mn-deficiency was observed; it involved 20–25% of plants, independently of the type of nutritive solution supplied.

The analysis did not evidentiate substantial differences, as to the content of this element, between chlorotic and normal apical leaves.
The non-homogeneity of the leaves sample used induced us to utilize as reference parameter the foliar surface.
It followed a confirmation of the Mn-deficiency, while it appeared that the nature of the chlorosis might also be attributed to Zn and Mg.

Symposium on Nutrition, Growing Techniques and Plant Substrates

P. Fiorino, M. Tattini

https://doi.org/10.17660/ActaHortic.1986.178.43