Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films
Agrochemicals, based on iron, sulphur and chlorine, generate by products that lead to a degradation of greenhouse films together with a decrease in their mechanical and physical properties. The degradation due to agrochemicals depends on their active principles, method and frequency of application,...
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2013-10-01
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| Series: | Journal of Agricultural Engineering |
| Subjects: | |
| Online Access: | http://www.agroengineering.org/jae/article/view/206 |
| _version_ | 1818521477272567808 |
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| author | Giuliano Vox Evelia Schettini |
| author_facet | Giuliano Vox Evelia Schettini |
| author_sort | Giuliano Vox |
| collection | DOAJ |
| description | Agrochemicals, based on iron, sulphur and chlorine, generate by products that lead to a degradation of greenhouse films together with a decrease in their mechanical and physical properties. The degradation due to agrochemicals depends on their active principles, method and frequency of application, and greenhouse ventilation. The aim of the research was to evaluate how agrochemical contamination and solar radiation influence the radiometric properties of ethylene-vinyl acetate copolymer greenhouse films by means of laboratory and field tests. The films, manufactured on purpose with the addition of different light stabiliser systems, were exposed to natural outdoor weathering at the experimental farm of the University of Bari (Italy; 41° 05’ N) in the period from 2006 to 2008. Each film was tested for two low tunnels: one low tunnel was sprayed from inside with the agrochemicals containing iron, chlorine and sulphur while the other one was not sprayed and served as control. Radiometric laboratory tests were carried out on the new films and on samples taken at the end of the trials. The experimental tests showed that both the natural weathering together with the agrochemicals did not modify significantly the radiometric properties of the films in the solar and in the photosynthetically active radiation wavelength range. Within six months of experimental field tests the variations in these radiometric characteristics were at most 10%. Significant variations, up to 70% of the initial value, were recorded for the stabilised films in the long-wave infrared radiation wavelength range. |
| first_indexed | 2024-12-11T01:51:30Z |
| format | Article |
| id | doaj.art-99239af916fd490fa4b5319091843939 |
| institution | Directory Open Access Journal |
| issn | 1974-7071 2239-6268 |
| language | English |
| last_indexed | 2024-12-11T01:51:30Z |
| publishDate | 2013-10-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Journal of Agricultural Engineering |
| spelling | doaj.art-99239af916fd490fa4b53190918439392022-12-22T01:24:44ZengPAGEPress PublicationsJournal of Agricultural Engineering1974-70712239-62682013-10-01442e11e1110.4081/jae.2013.206177Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse filmsGiuliano Vox0Evelia Schettini1Department of Agricultural and Environmental Science, University of BariDepartment of Agricultural and Environmental Science, University of BariAgrochemicals, based on iron, sulphur and chlorine, generate by products that lead to a degradation of greenhouse films together with a decrease in their mechanical and physical properties. The degradation due to agrochemicals depends on their active principles, method and frequency of application, and greenhouse ventilation. The aim of the research was to evaluate how agrochemical contamination and solar radiation influence the radiometric properties of ethylene-vinyl acetate copolymer greenhouse films by means of laboratory and field tests. The films, manufactured on purpose with the addition of different light stabiliser systems, were exposed to natural outdoor weathering at the experimental farm of the University of Bari (Italy; 41° 05’ N) in the period from 2006 to 2008. Each film was tested for two low tunnels: one low tunnel was sprayed from inside with the agrochemicals containing iron, chlorine and sulphur while the other one was not sprayed and served as control. Radiometric laboratory tests were carried out on the new films and on samples taken at the end of the trials. The experimental tests showed that both the natural weathering together with the agrochemicals did not modify significantly the radiometric properties of the films in the solar and in the photosynthetically active radiation wavelength range. Within six months of experimental field tests the variations in these radiometric characteristics were at most 10%. Significant variations, up to 70% of the initial value, were recorded for the stabilised films in the long-wave infrared radiation wavelength range.http://www.agroengineering.org/jae/article/view/206greenhouse film, iron, chlorine, sulphur, solar radiation, transmissivity. |
| spellingShingle | Giuliano Vox Evelia Schettini Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films Journal of Agricultural Engineering greenhouse film, iron, chlorine, sulphur, solar radiation, transmissivity. |
| title | Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films |
| title_full | Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films |
| title_fullStr | Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films |
| title_full_unstemmed | Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films |
| title_short | Effects of agrochemicals, ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films |
| title_sort | effects of agrochemicals ultra violet stabilisers and solar radiation on the radiometric properties of greenhouse films |
| topic | greenhouse film, iron, chlorine, sulphur, solar radiation, transmissivity. |
| url | http://www.agroengineering.org/jae/article/view/206 |
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