## 3 Results  
Table 1 showcases the terpene contents (\(\mu\)g L\({}^{-1}\)) of the apples subjected to curative applications of individual and combined essential oils (EOs) against _B. cinerea_. The concentration of \(\alpha\)-Pinene varied across treatments, with the highest recorded for the Fungus + Thymol + 1.8-Cineol + Eugenol treatment (28.71 \(\mu\)g L\({}^{-1}\)) and the lowest for the Fun+Thy+Cin treatment (13.4 \(\mu\)g L\({}^{-1}\)). D-Limonene values ranged from 21.7 \(\mu\)g L\({}^{-1}\) in the CT group to 17.0 \(\mu\)g L\({}^{-1}\) in the Fun+Thy+Cin treatment. For \(\beta\)-Pinene, the highest concentration was noted in Fun+Thy+Cin (45.5 \(\mu\)g L\({}^{-1}\)) and the lowest in Fun+Cin+Eug (19.3 \(\mu\)g L\({}^{-1}\)). Phellandrene content ranged from 53.7 \(\mu\)g L\({}^{-1}\) in Fun+Thy+Cin to a maximum of 104.1 \(\mu\)g L\({}^{-1}\) in Fun+Thy+Cin+Eug. Neral content was lowest in Fun+Thy+Eug (1.4 \(\mu\)g L\({}^{-1}\)) and peaked in Fun+Cin+Eug (4.7 \(\mu\)g L\({}^{-1}\)). Geraniol displayed a considerable variation across treatments, with Fun+Thy+Cin+Eug showing the highest concentration of 65.9 \(\mu\)g L\({}^{-1}\) and  
Fun+Thy+Eug showing the least at 29.6 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). For geranic acid, the highest concentration was in Fun+Cin+Eug (58.7 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\)), and the lowest was in Fun+Thy+Eug (22.9 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\)). For E-Nerolidol, the highest was observed for Fun+Thy+Cin+Eug at 253.6 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\), while the control had a value of 165.1 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). Cedrol ranged from 31.4 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) in Fun+Thy+Cin to 64.0 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) in Fun+Thy+Cin+Eug. In this study, the ester contents (\(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\)) of the harvested apples following curative applications of individual and combined EOs against _B. cinerea_ were examined, as shown in Table 2. The analysis of ester contents in the harvested apples following various EO treatments against _B. cinerea_ revealed noteworthy findings. Among these treatments, propyl acetate demonstrated its highest concentration in the Fun+Thy+Cin+Eug combination, measuring 76.5 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). For ethyl isobutyrate, the Fun+Cin+Eug combination yielded the highest concentration at 79.7 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). In the case of ethyl acetate, the highest concentration was determined in the Fun+Cin+Eug combination, reaching 58.3 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). Ethyl butyrate showed its highest concentration of 136.6 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) when employing the Fun+Thy+Cin+Eug combination. Conversely, ethyl hexanoate reached its highest concentration of 26.7 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) in the Fun+Cin+Eug combination. Ethyl heptanoate showed an intriguing pattern, achieving its peak concentration of 314.1 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) with the Fun+Thy+Cin+Eug combination. The ethyl propionate concentration reached its peak at 152.9 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) when using the Fun+Thy combination. In the Fun+Thy+Cin+Eug combination, ethyl pentanoate achieved its maximum concentration, measuring 84.7 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). A similar pattern emerged for ethyl 3-methylbutanoate, with Fun+Eug resulting in the highest concentration at 57.1 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\). Hexyl acetate also had its highest concentration, 86.2 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\), in the Fun+Cin+Eug combination. (Z)-3-hexenyl acetate displayed its peak concentration of 134.7 \(\mathrm{\SIUnitSymbolMicro\text{g}}\) L\({}^{-1}\) in the Fun+Cin+Eug combination.