Agriculture, Vol. 25 No. 1, 2019.
Original scientific paper
https://doi.org/10.18047/poljo.25.1.7
PREDICTION OF MACRO AND MICROELEMENTS CONTENT IN CROATIAN COMMON BEAN LANDRACES (Phaseolus vulgaris L.) BY NIR SPECTROSCOPY
Marina Vranić
orcid.org/0000-0001-6280-0116
; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, HR-10000 Zagreb, Croatia
Marko Petek
orcid.org/0000-0002-2356-6440
; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, HR-10000 Zagreb, Croatia
Krešimir Bošnjak
; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, HR-10000 Zagreb, Croatia
Boris Lazarević
; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, HR-10000 Zagreb, Croatia
Klaudija Carović-Stanko
orcid.org/0000-0002-8777-9875
; University of Zagreb, Faculty of Agriculture, Svetošimunska cesta 25, HR-10000 Zagreb, Croatia
Abstract
In this study, near-infrared spectroscopy (NIRS) was used to predict the contents of essential macro- and microelements in common bean (Phaseolus vulgaris L.) accessions of most widespread Croatian landraces. Total of 175 samples were used for the model development by modified partial least square (MPLS), principal component regression (PCR) and partial least square (PLS) techniques. Based on the coefficients of determination (R2), standard error of calibration (SEC) and error of prediction (SEP) the models developed were (i) nearly applicable for nitrogen (N) (0.89, 0.12 and 0.45 respectively), (ii) poor for iron (Fe), cinc (Zn), potassium oxide (K2O) and potassium (K), (iii) usable for phosphorus pentoxide (P2O5), phosphorus (P), phytic acid (PA) and manganese (Mn). The MPLS regression statistics suggested the most accurate models developed comparing with PLS and PCR. It was concluded that a wider set of common bean samples needs to be used for macro- and microelements prediction by NIRS.
Keywords
common bean; macronutrients; micronutrients; minerals; NIRS
Hrčak ID:
221097
URI
Publication date:
14.6.2019.
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