Two parallel experiments, one in soil-bound and another in soilless cultivation conditions, were carried out at the Experimental Farm “La Noria” of the Institute of Sciences of Food Production (ISPA-CNR) in Mola di Bari during the2020-2021 growing season. The experiment was carried out within the SUS&LOW (SUSTAING LOW-IMPACT PRACTICES IN HORTICULTURE THROUGH NON-DESTRUCTIVE (ND) APPROACH TO PROVIDE MORE INFORMATION ON FRESH PRODUCE HISTORY & QUALITY) projects. Colour parameters and total chlorophyll content were measured on rocket leaves coming from the two growing systems. For chlorophyll analysis a no-destructive and a destructive analytic method were compared. Two PLS model were built in order to predict the cultivation system. In the first PLS the hue angle and the total chlorophyll measured using the no-destructive method were considered as predictors. In the second PLS the x variables were the hue angle and the total chlorophyll measured using the analytic method. Both PLS were able to discriminate the cultivation system with R2 value of 0.7 (in calibration and validation) for the first PLS and 0.6 (in calibration and validation) for the second one. The first model outperformed the second since the no-destructive method used allowed to make more measurements for each replications, that were more than the replications used in the analytical method. This is due to the rapidity of the analysis that allowed to analyze more samples, catching all the variability present among samples.
Prediction of cultivation system by rapid and no-destructive tool
Bonelli Lucia;Montesano Francesco F.;
2023-01-01
Abstract
Two parallel experiments, one in soil-bound and another in soilless cultivation conditions, were carried out at the Experimental Farm “La Noria” of the Institute of Sciences of Food Production (ISPA-CNR) in Mola di Bari during the2020-2021 growing season. The experiment was carried out within the SUS&LOW (SUSTAING LOW-IMPACT PRACTICES IN HORTICULTURE THROUGH NON-DESTRUCTIVE (ND) APPROACH TO PROVIDE MORE INFORMATION ON FRESH PRODUCE HISTORY & QUALITY) projects. Colour parameters and total chlorophyll content were measured on rocket leaves coming from the two growing systems. For chlorophyll analysis a no-destructive and a destructive analytic method were compared. Two PLS model were built in order to predict the cultivation system. In the first PLS the hue angle and the total chlorophyll measured using the no-destructive method were considered as predictors. In the second PLS the x variables were the hue angle and the total chlorophyll measured using the analytic method. Both PLS were able to discriminate the cultivation system with R2 value of 0.7 (in calibration and validation) for the first PLS and 0.6 (in calibration and validation) for the second one. The first model outperformed the second since the no-destructive method used allowed to make more measurements for each replications, that were more than the replications used in the analytical method. This is due to the rapidity of the analysis that allowed to analyze more samples, catching all the variability present among samples.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
