1,721,030 research outputs found

    Política Económica Argentina 1973-1976 : Influencias Doctrinarias

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    Fil: Vercesi, Alberto Juan. Universidad Nacional del Sur

    Ricerche sulla valutazione della variabilità clonale e varietale delle prestazioni vegeto – produttive di genotipi di vite selezionati (vitigni della Lombardia).

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    Abstract: Aiming to define the role of varieties and clones in the environment, to optimize its employment and to provide useful indications for future clones selections; the productive performances of the most representative clones of the main varieties of reference (cv Barbera, 8 clones; cv Croatina, 5 clones and cv Pinot nero, 3 clones) of the D.O.C. “Oltrepò Pavese” (north – west Italy, Lat N 45°) were studied. Three different sites within the best area for red wine production were followed for some years (4 or 7). According to the results of the Multifactor Analysis of Variance (MANOVA), trough the percent evaluation of the variability (sum of squares) each sources of variation (genotype – varieties or clones – cultivation sites, years and all the interaction of two level) were weighed. The effect of the variety appears as the most important factor of the viticulture model while when considering the clones, the cultivation site and the other sources of variation were the most important factors. The comparison between clones and the environmental variability on yield performances of the vines has allowed to characterize better the clones of the varieties and allows to direct better the genetic selection for the future

    L’Ughetta di canneto (Vespolina) ed il suo legame con il vino Buttafuoco.

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    Vitigno storico dell'Oltrepò Pavese orientale prima della fillossera era la seconda varietà più diffusa in loco. In occasione della ricostruzione post-fillosserica durata dalla fine del secolo XIX ai primi decenni del 1900, l'Ughetta di Canneto, scarsamente produttiva e sensibile alle malattia, venne quasi del tutto abbandonata in tutto l'Oltrepò Pavese. Oggi è un vitigno recuperato e impiegato nella piattaforma ampelografica dei vini del territorio

    Ughetta di Canneto (Vespolina) caratterizzazione viticola ed enologica

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    Allo scopo di fornire una descrizione viticola ed enologica dell'Ughetta di Canneto coltivata in zone tradizionali dell'Oltrepò Pavese, tra il 2002 e il 2005 è stata condotta la caratterizzazione delle uve di ceppi rappresentativi delle varietà Ughetta di Canneto, Barbera e Croatina reperite in due vigneti diti nei Comuni di Canneto Pavese (Az. Quaquarini, cv. Ughetta di Canneto), Cigognola (Az. Chiappedi, cvs. Barbera e Croatina). Per quanto riguarda la caratterizzazione enologica sono state considerate a titolo esemplificativo le degustazioni (analisi sensoriali) dei vini prodotti nel 2007; anche in questo caso di è operato un raffronto del vino ottenuto dall'Ughetta di Canneto con vini prodotti da altri noti vitigni locali coltivati in azienda (Croatina e Uva rara). In tutti i casi, le viti sono allevate a Guyot semplice con una distanza di 2,4m tra i filati e variabile da 1,0 m (Azienda di Riccagioia, piante singole) e 1,6m (Azienda Chiappedi, piante biante) lungo la fila

    Fertilizzazione dei sistemi viticoli

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    In this chapter, the conditions concerning the characteristics of viticulture and its products are described. In the first part, some methods to define the nutritional requirements of the vine in different situations are examined (grape varieties, areas of production), also thanks to the illustration of some emblematic case studies.The second part include the description of the main nutritional deficiencies (K, Mg, B, Fe) , reporting the photos of the symptoms and information about the causes, preventions and cure

    Effetti di diversi concimi azotati e di alcuni fattori dell'agrosistema sulla nutrizione e sulla qualità dell'uva (Cabernet Sauvignon in Oltrepò Pavese)

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    According to the importance of nitrogen nutrition and the enviroment on the quantitative and qualitative grapevine production, an experiment was conduced, from 2008 to 2011, in a Cabernet Sauvignon vinyard in Oltrepò Pavese (north-west Italy), to check the nutritional effect of different nitrogen formulations in reference to the quality of grapes produced (used products: calcium cyanamide, ammonium nitrate and Nitrophoska gold was tested for 60 kg/ha of N, in comparison with a control). The application of fertilizer was divided in randomized block design and it was used the multifactorial ANOVA (with sources of variation: fertilization, different position in the field and year, and their interactions) to measure also the importance (sum of squares) of each source of variation. The main variables measured: leaf mineral composition (limbe and petioles), presence of chlorophill (SPAD) weight of berry and grapes per vine, sugars, acids and anthocyanins in the must. The main factors that have affected the vegetation and the production of the vines are estimated in the climate (by the year factor) and in soil (by the block factor). The fertilizers, that among them have not shown any substantial difference, has showed a significant increase of nitrogen concentrationi in leaves (veraison) and a significant reduction of sugar, anthocyanins and tartaric acid/malic acid
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