Search results for "vit.C"
showing 10 items of 297 documents
Zvaigžņotā Debess: 2014/15, Ziema (226)
2014
Contents: “ZVAIGŽŅOTĀ DEBESS” FORTY YEARS AGO: J.Stradiņš. Vestige of Otto Schmidt in Latvia (abridged) ; Leonora Roze. All-Union Conference in Latvian State University (abridged) ; DEVELOPMENTS in SCIENCE: K.Schwartz. Gravitational Waves and Cosmic Inflation ; DISCOVERIES: A.Alksnis. Light Echoes from Supernova 2014J in Galaxy M82 ; A.Alksnis. Discovery of the Benešov Meteorites 20 Years after the Bolide Event ; I.Pundure. Giant Filament on the Sun Watched by NASA's SDO ; I.Pundure. MAVEN’s Mars Exploration Mission Started ; SPACE RESEARCH and EXPLORATION: R.Misa. Plasma Engines and Ad Astra Rocket Company ; LATVIAN SCIENTISTS: J.Freimanis. Reviewing My 60 Years of Life (concluded) ; KĀRLI…
Distribution of YLOID in soil-grapevine system (Vitis vinifera L.) as tool for geographical characterization of agro-food products. A two years case …
2017
The knowledge of a chemistry relationship between the soil and the agricultural products is an important tool for the quality assessment of food. We studied YLOID (Y, La and lanthanoids), recognized as very useful tracers due their coherent and predictable behavior, to trace and evaluate their distribution from soil to the grape in Vitis vinifera L. Because much of the world’s viticulture is based on grafting, and rootstocks have proved affect vine growth, yield, fruit and wine quality, we carried out experimental trials to analyse the YLOID distribution of two different red cultivars, grafted onto six different rootstocks, on the same soil. The YLOID amounts, the relationship Heavy vs Ligh…
An assessment method for the quantification of Daktulosphaira vitifoliae (Fitch) (Hem., Phylloxeridae) populations in the field
2003
: Grape phylloxera is a plant parasite that has started to become a pest again in European viticulture in spite of the use of grafted rootstocks. Since the middle of the 1980s, there have been various reports of vine damage caused by phylloxera. It was shown that in some cases there is no direct correlation between the occurrence of phylloxera and vine damage. In this context, phytopathogenic microorganisms, especially fungi, are mentioned in literature. To investigate the possible interactions it is necessary to be able to assess phylloxera populations in the field, e.g. to correlate phylloxera abundance with the vigour of the vines. Because of the non-homogenous distribution of the grape…
Mejoramiento de los vinos por las levaduras puras y activas del Instituto La Claire : resultados obtenidos en las vendimias del año 1892
The effect of climate on Burgundy vintage quality rankings.
2019
Aim: Based on consensus rankings from prominent rating authorities, we examined the importance of a suite of climatic variables, organized by winegrape phenological stage, in distinguishing between high- and low-ranked vintages in Burgundy.Methods and Results: Vintage ratings of Burgundy wines acquired from 12 sources were evaluated to develop consensus rankings for red and white wines from 1961–2015. Climate variables (air temperature, precipitation, degree-day accumulations, etc.) were organized by mean phenological stage and compared between good and poor vintages using Mann-Whitney U tests and multivariate stepwise discriminant function analysis. High temperatures, particularly during t…
Climate zoning of the Burgundy winegrowing region
2018
As one of the most emblematic wine regions of cool climate terroir viticulture, Burgundy is endowed with a set of very specific natural features suitable to the production of high quality wines, where climate is arguably one of the main factors to profoundly influence vine physiology/phenology and grape composition. These environmental nuances have led to a wide variety of styles in Pinot noir and Chardonnay wines that have been largely acknowledged and appreciated by the international market and vitivinicultural industry. However, individual grape varieties optimum quality is known to be closely related to well-defined climate and geographical ranges. Climate change and global warming late…
Ensayo sobre las variedades de la vid común que vegetan en Andalucía: con un índice etimológico y tres listas de plantas en que se caracterizan v…
1882
v.1: Parte primera
Ensayo sobre las variedades de la vid común que vegetan en Andalucía: con un índice etimológico y tres listas de plantas en que se caracterizan varia…
v.1: Parte segunda
Ensayo sobre las variedades de la vid comun que vegetan en Andalucía : con un índice etimológico y tres listas de plantas en que se caracterizan vari…
Les p. 61-64, impresses per una cara i pleg Notes a peu de p
La malaltia de l'enrotllament de la fulla de vinya i virus associats
2015
L'enrotllament de la fulla de la vinya és una malaltia d'origen víric que té un gran impacte negatiu sobre els conreus i la producció de raïm de qualitat. Es coneix des de fa més d'un segle, amb una distribució mundial i amb deu espècies de closterovirus associades; el principal agent etiològic n'és el virus 3 associat a l'enrotllament de la fulla de la vinya (grapevine leafroll-associated virus 3, GLRaV-3). L'estudi de la família Closteroviridae i la seua filogènia han permès comprendre l'evolució d'aquests virus, que experimenten una forta selecció negativa, amb molta migració, però algunes espècies han aconseguit augmentar la variabilitat genètica mitjançant processos de recombinació. Fi…