Agyemang Duah, StellaNagy, ZsuzsaHelyes, Lajos2021-06-282021-06-282019-12-15Acta Agraria Debreceniensis, No. 2 (2019) , 21-232416-1640https://hdl.handle.net/2437/317087The study was undertaken to identify the effect of different shading net on the quantum efficiency of PS II on ‘Star Flame’ chilli pepper (Capsicum annuum) over a period of time cultivated under plastic house environment. ‘Star Flame’ pepper was grown under red shading net and samples without shading were used as control. Analysis of photosynthetic activity revealed a significant difference (p<0.05) between Fv/Fm values in control and red shading at the end of July (p = 0.031) after the first harvest. Chlorophyll fluorescence parameter Fv/Fm reflects the maximum quantum efficiency of photosystem II (PS II) used in the detection of early stress in plants .  application/pdfshading netschlorophyll fluorescenceharvesting timegreenhousefolyóiratcikkOpen Accesshttps://doi.org/10.34101/actaagrar/2/3673Acta Agraria Debreceniensis2Acta agrar. Debr.