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PC&CA - Mirror of grassland feed frap antioxidant activity in summer, depending on fertilization?

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dc.contributor.author Harmanescu, Monica
dc.date.accessioned 2021-04-22T10:45:44Z
dc.date.available 2021-04-22T10:45:44Z
dc.date.issued 2017
dc.identifier.citation Harmanescu, Monica. 2017. "PC&CA - Mirror of grassland feed frap antioxidant activity in summer, depending on fertilization?". Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie 60(1): 251-256.
dc.identifier.uri https://repository.uaiasi.ro/xmlui/handle/20.500.12811/937
dc.description.abstract The topic of this research was to test a chemometric technique (Principal Components & Classification Analysis) to reflect some characteristics of a real case: the influence of fertilization management on FRAP antioxidant activity in summer of grassland perennial forages. An area of 25 m2 for each experimental trial was organised, with five replications, in complete randomized blocks design. StatSoft – STATISTICA, version 10, performed the chemometric matrix. Ten cases were included, nine of them with different fertilization management and one unfertilized. It was applied fermented sheep manure and/or mineral fertilizers based on NPK since 2003. The active variables of PC&CA were: the fertilization data, soil pH and the gravimetric percent of the spontaneous plants Calamagrostis epigejos (Ce%), Festuca rupicola (Fr%), Trifolium repens (Tr%), Inula britannica (Ib%), Filipendula vulgaris (Fv%) and Rosa canina (Rc%). The supplementary variable was the perennial feed FRAP antioxidant capacity. The coefficient for soil pH and Trifolium repens (%) correlation was 0.8, while in Calamagrostis epigejos (%) and Festuca rupicola (%) cases the coefficients were negatively: -0.6, respectively -0.8. Positive coefficients were obtained in summer for the correlations between grassland perennial feed FRAP antioxidant activity and Inula britannica (%), respectively Rosa canina (%). Principal Components & Classification Analysis can reflect as a mirror the perennial forage FRAP antioxidant activity at low pH, as grassland functional feed for animal, depending on fertilization management. en_US
dc.language.iso en en_US
dc.publisher “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi en_US
dc.subject FRAP antioxidant activity en_US
dc.subject functional feed en_US
dc.subject grassland en_US
dc.subject perennial forages en_US
dc.subject multivariate analysis en_US
dc.title PC&CA - Mirror of grassland feed frap antioxidant activity in summer, depending on fertilization? en_US
dc.type Article en_US
dc.author.affiliation Monica Harmanescu, Banat’s University of Agricultural Sciences and Veterinary Medicine, Timisoara
dc.publicationName Lucrări Ştiinţifice USAMV - Iaşi Seria Agronomie
dc.volume 60
dc.issue 1
dc.publicationDate 2017
dc.startingPage 251
dc.endingPage 256
dc.identifier.eissn 2069-6727


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