Influence of Nitrogen, Calcium and Nano-Fertilizer on Strawberry (Fragaria × ananassa Duch.) Fruit Inner and Outer Quality

The production system, especially fertilisation has an important effect on yield and quality of strawberries. In the present study, plants were fertilized with different doses nitrogen (0–100% recommended doses), calcium chelate, as well nano fertilizer Lithovit. Strawberry cultivar ‘Clery’ parameters (fruit color firmness) including nutritional indicators (total soluble solids, sugars, organic acids, phenolic volatile compounds) monitored. Volatiles identified monitored using headspace solid phase microextraction analysed gas chromatograph-mass spectrometry (SPME/GC-MS) compounds high performance liquid chromatography. Organic acids detected mass spectrometer (HPLC/MS). Both had altered contents in strawberry fruits. Fertilisation higher increased content unpleasant aromas aldehydes hexanal (up to 3.8-fold) (E)-2-hexen-1- 3.7-fold). fruity esters was uppermost fruits fertilised nano-fertiliser Lithovit 2.3-fold). N Ca decreased strength ketone terpenoids aroma. highest total phenols, all individual hydroxycinnamic hydroxybenzoic acid derivatives obtained treatment. Fertilisation, nitrogen, mostly negative impact flavour while nano-fertilization improved