Nondestructive Optical Sensing of Flavonols and Chlorophyll in White Head Cabbage (Brassica oleracea L. var. capitata subvar. alba) Grown under Different Nitrogen Regimens

• DOI: 10.1021/acs.jafc.5b04962
• Publication Date: 2015-12-18T06:08:11Z
• Authors: Giovanni Agati; Lorenza Tuccio; Barbara Kuszniere...; Tomasz Chmiel; Agnieszka Bartoszek; Artur Kowalski; Maria Grzegorzewska; Ryszard Kosson; Stanislaw Kanisze...
• Keywords: Capitata; Flavonols

A multiparametric optical sensor was used to nondestructively estimate phytochemical compounds in white cabbage leaves directly the field. An experimental site of 1980 cabbages (Brassica oleracea L. var. capitata subvar. alba), under different nitrogen (N) treatments, mapped by measuring leaf transmittance and chlorophyll fluorescence screening one leaf/cabbage head. The provided indices flavonols (FLAV) (CHL) displayed opposite response applied N rates, decreasing increasing, respectively. combined balance index (NBI = CHL/FLAV) calculated able discriminate all plots four regimens (0, 100, 200, 400 kg/ha) correlated with content determined destructively. CHL FLAV were properly calibrated against (R2 0.945) flavonol 0.932) contents, respectively, using a homographic fit function. proposed sensing crops can be status plants perform precision fertilization maintain acceptable crop yield levels and, additionally, rapidly detect health-promoting antioxidants Brassica plants.