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

Giovanni Agati; Lorenza Tuccio; Barbara Kusznierewicz; Tomasz Chmiel; Agnieszka Bartoszek-Pączkowska; Artur Kowalski; Maria Grzegorzewska; Ryszard Kosson; Stanislaw Kaniszewski

doi:10.1021/acs.jafc.5b04962

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

Abstract

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

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Authors (9)

Giovanni Agati
Lorenza Tuccio
Barbara Kusznierewicz dr hab. inż.
Tomasz Chmiel dr inż.
Agnieszka Bartoszek-Pączkowska prof. dr hab. inż.
Artur Kowalski
Maria Grzegorzewska
Ryszard Kosson
Stanislaw Kaniszewski

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY no. 64, edition 1, pages 85 - 94,
ISSN: 0021-8561
Language:: English
Publication year:: 2016
Bibliographic description:: Agati G., Tuccio L., Kusznierewicz B., Chmiel T., Bartoszek-Pączkowska A., Kowalski A., Grzegorzewska M., Kosson R., Kaniszewski S.: Nondestructive Optical Sensing of Flavonols and Chlorophyll in White Head Cabbage ( Brassica oleracea L. var. capitata subvar. alba ) Grown under Different Nitrogen Regimens// JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. -Vol. 64, iss. 1 (2016), s.85-94
DOI:: Digital Object Identifier (open in new tab) 10.1021/acs.jafc.5b04962
Verified by:: Gdańsk University of Technology