10.26165/JUELICH-DATA/FOQOFIKonche, DeepthiDeepthiKonche0009-0009-2644-6477FZJ/IBG-2Romero, Juan ManuelJuan ManuelRomero0000-0002-0978-9613Ispizua Yamati, Facundo RamónFacundo RamónIspizua Yamati0000-0001-5775-3554IFZ, GoettingenBoemer, JonasJonasBoemer0000-0003-0723-4224IFZ, GoettingenAskin, IlgazFZJ/IBG -2Jedmowski, ChristophChristophJedmowski0000-0003-4647-4896FZJ/IBG-2Mahlein, Anne-KatrinAnne-KatrinMahlein0000-0003-1091-3690IFZ, GoettingenRascher, UweUweRascher0000-0002-9993-4588FZJ/IBG-2Muller, OnnoOnnoMuller0000-0002-0473-5632FZJIBG-2Jülich DATA2026Agricultural Sciencescanopy SIF, SIF yield, PSII efficiency, Cercospora leaf spot, Field phenotypingKonche, DeepthiDeepthiKoncheFZJ/IBG-22025-10-242026-03-242023-08-11/2023-09-06Field experimental dataset including active and passive chlorophyll fluorescence measurements.270270562222311243694762219application/zipapplication/zipapplication/zipapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheet1.0This dataset includes measurements in sugar beet crop collected during field experiments investogating the effects of Cercospors leaf spot infection. The dataset integrated measurements from both active and passive chlorophyll fluorescence techniques. Active fluorescence parameters, including PSII efficiency obtained using the light induced fluorescence transient (LIFT) system. Passive fluorescence measurements including red and far-red sun-induced fluorescence (SIF) and range of reflectance-based vegetation indices (VIs) using a fluorescence (FloX) box. The dataset further estimates SIF Yield using the escape fraction (fesc) derived from reflectance data and fraction of absorbed photosynthetically active radiation (fAPAR). Complementary agronomic and disease related observations like final yield measurements and disease severity scores (DSS) are also included.(DFG, German Research Foundation)491111487Strukturwandel-Projekt BioökonomieREVIER031B0918ABMEL28DK108C20