Study of the variability of the parameters, characteristics of the cork according to the extraction height
DOI:
https://doi.org/10.46325/afj.v8i2.176Keywords:
Cork, parameters, height, barrel, extractionAbstract
In the Hafir cork grove, 60 sample trees close to the stripping were obtained 180 cork calas, extracted according to three heights of the trunk and three levels of the ground. On these samples the main characteristic parameters of cork were studied, namely the size, surface density, volume density, porosity, appearance and quality indices. The results revealed that reducing the caliber of the base of the barrel (H1 = 60 cm (32.30mm)) to its height (H3: 230cm (24.70mm)) potentially influences the other parameters. The surface density goes from 7.64 kg/m2 to 5.41 kg/m2; the volume density increases from 256.46 kg/m3 to 288.43 kg/m3; the porosity of 8.21% drops to 3.38%; the appearance of class 6a stabilizes at class 1a -4a, and finally the quality indices (IQ) improve further from 5.80 to 12.5. These results confirm the need to set the height of cork debarking to obtain the best yield without harming the vigor of the tree.
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