EXPERIMENTAL TESTS ON SOIL SOLARIZATION WITH PHOTODEGRADABLE PLASTIC FILM AND SOIL TEMPERATURE MATHEMATICAL MODEL A mathematical model for the prediction of soil temperature during solarization was formulated and an innovative photodegradable plastic film for mulching was tested. In order to verify the model and the film soil solarization tests were carried out with the measurement of soil temperature at 10, 20, 30 e 50cm depth. The standard errors of estimate and the average errors, calculated between experimental and predicted data of soil temperature at different depths, were respectively included in the range ±0.70°C, ±1.51°C and 0.59°C, 1.29°C. The degradation of the mulching film began after 30 days and after 60 days the film was largely damaged. Finally the effects of solarization on the mortality rate of soilborne pathogens and on the reduction in weed natural infestation were investigated.
EXPERIMENTAL TESTS ON SOIL SOLARIZATION WITH PHOTODEGRADABLE PLASTIC FILM AND SOIL TEMPERATURE MATHEMATICAL MODEL A mathematical model for the prediction of soil temperature during solarization was formulated and an innovative photodegradable plastic film for mulching was tested. In order to verify the model and the film soil solarization tests were carried out with the measurement of soil temperature at 10, 20, 30 e 50cm depth. The standard errors of estimate and the average errors, calculated between experimental and predicted data of soil temperature at different depths, were respectively included in the range ±0.70°C, ±1.51°C and 0.59°C, 1.29°C. The degradation of the mulching film began after 30 days and after 60 days the film was largely damaged. Finally the effects of solarization on the mortality rate of soilborne pathogens and on the reduction in weed natural infestation were investigated.
E’ stato elaborato un modello matematico di simulazione per il calcolo delle temperature nel terreno durante la solarizzazione ed è stato sperimentato un materiale plastico innovativo di pacciamatura fotodegradabile. Allo scopo di verificare il modello e il comportamento del film sono state condotte prove di solarizzazione del terreno agrario misurando le temperature a 10, 20, 30 e 50cm di profondità. Dal confronto effettuato tra i valori misurati e quelli calcolati con il modello matematico delle temperature del terreno alle varie profondità è stato rilevato un errore standard della stima compreso tra ±0.70°C e ±1.51°C e un errore medio compreso tra 0.59°C e 1.29°C. Il processo di degradazione del film di pacciamatura è iniziato dopo circa 30 giorni dall’inizio della sperimentazione mentre, dopo circa 60 giorni, il film ha assunto una consistenza cartacea e un’elevata fragilità. La prova è stata completata valutando gli effetti della solarizzazione con film fotodegradabile sulla mortalità di microorganismi patogeni e sulla riduzione di semi di erbe infestanti presenti nel terreno.
Modello numerico di solarizzazione e prove con film fotodegradabile / Candura, A; SCARASCIA MUGNOZZA, G; Russo, G; Vox, G. - In: COLTURE PROTETTE. - ISSN 0390-0444. - STAMPA. - 3:(1999), pp. 79-86.
Modello numerico di solarizzazione e prove con film fotodegradabile
SCARASCIA MUGNOZZA G;
1999-01-01
Abstract
EXPERIMENTAL TESTS ON SOIL SOLARIZATION WITH PHOTODEGRADABLE PLASTIC FILM AND SOIL TEMPERATURE MATHEMATICAL MODEL A mathematical model for the prediction of soil temperature during solarization was formulated and an innovative photodegradable plastic film for mulching was tested. In order to verify the model and the film soil solarization tests were carried out with the measurement of soil temperature at 10, 20, 30 e 50cm depth. The standard errors of estimate and the average errors, calculated between experimental and predicted data of soil temperature at different depths, were respectively included in the range ±0.70°C, ±1.51°C and 0.59°C, 1.29°C. The degradation of the mulching film began after 30 days and after 60 days the film was largely damaged. Finally the effects of solarization on the mortality rate of soilborne pathogens and on the reduction in weed natural infestation were investigated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
