engleski

Morfological and spectral analyses of pepper fruits affected by foliar application of calcium amendments

Pepper (Capsicum annuum L.) is common fruity vegetable which can be consumed fresh or processed, as well as in both technological and/or physiological maturity. Pepper fruits are especially sensitive on calcium deficiency which can reduce quality and shape of fruits. Therefore the field experiment with two cultivars (‘Kurtovska kapija’ and ‘Šorokšari’) was set up as complete randomized block design in three replications with four foliar calcium treatments (control, Ecogreen 3g L-1, Ecogreen 5g L-1, and Zeogreen 5g L-1) applied twice during the vegetation. Morphological (length, width, convex hull, minimal circle etc.) and multispectral (chlorophyll index, anthocyanin index, NIR reflectance, hue, spcgreen reflectance, fluorescence etc.) analysis of fruits harvested at technological maturity were performed using CropReproter (multispectral imaging chamber). Fruits of cv. Kurtovska kapija contained more chlorophyll (chl indx 1.49) anthocyanins (arid indx 3, 3), had higher NIR reflectance (46035), and hue (85, 9), and lower far red reflectance (18647) and spc green reflectance (8409) compared to cv. Šorokšari (0, 23 chl indx , 00, 5 ari indx, 31123 NIR, 60, 0 hue, 25476 far red, and 18437 spc green). In addition, as obvious, fruits of cv. Kurotvska kapija were longer (143, 7 mm) and narrower (48, 2 mm) in comparison with fruits of cv. Šorokšari (7, 5 mm and 58, 4 mm, respectively). Calcium foliar treatments affected fruit multispectral parameters of cv. Kurtovska kapija, where highest far red (19576) and spc green (8847) reflectance and lowest hue and chl indx were detected in Ecogreen 5g L-1 treatment.

Capsicum annuum L., fruit morphology, multispectral analysis, vegetable

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