THE BEHAVIOR OF SEVEN OLIVE (OLEA EUROPAEA L.) CULTIVARS GROWN ON A SOIL CONTAINING CA IN RELATION TO IRON NUTRITION

The response of seven olive cultivars (‘Arbequina’, ‘Barnea’, ‘Chondrolia Chalkidikis’, ‘FS-17’, ‘Kalamon’, ‘Koroneiki’ and ‘Megaritiki’) to Fe deficiency stress was evaluated.
One-year-old olive plants were grown in plastic bags filled with a Ca containing soil mixture and they were irrigated with a modified Hoagland nutrient solution with or without Fe.
In general, the addition of Fe into the nutrient solution did not affect leaf N concentration.
The highest N concentration was observed in ‘Arbequina’, while the lowest one in ‘Barnea’ (basal leaves) and ‘Kalamon’ (top leaves). ‘Barnea’, ‘Chondrolia Chalkidikis’ and ‘FS-17’ treated with Fe had increased P concentration in top leaves but decreased one in basal leaves.
Potassium concentration in leaves was increased only in the basal leaves of the cultivars ‘Arbequina’, ‘Barnea’ and ‘Megaritiki’. Moreover, Fe-treated plants of ‘Megaritiki’, ‘Barnea’, ‘Chondrolia Chalkidikis’, ‘FS-17’ and ‘Kalamon’ had increased Ca concentration in their basal leaves.
The total dry weight of plants was not influenced by Fe nutrition and ‘Megaritiki’ had the lowest dry weight.
The previous cultivar presented visible Fe chlorosis symptoms in leaves and its chlorophyll concentration was significantly increased when treated with Fe.
As concerns chlorophyll fluorescence (Fv/Fm ratio), it was increased in the Fe-fed plants of ‘Arbequina’, ‘Koroneiki’ and ‘Megaritiki’.

VI International Symposium on Olive Growing

C. Chatzissavvidis , I. Therios , C. Antonopoulou , A. Giannakoula

chlorophyll, chlorosis, deficiency, diagnosis, fluorescence, tolerance

https://doi.org/10.17660/ActaHortic.2012.949.24