13 articles in this issue
J.C. Brink,F.J. Calitz,P.H. Fourie
Insufficient quantity but also quality of spray deposition on susceptible grapevine tissue (i.e. target sites) andfavourable conditions for pathogens could lead to control failure during high disease pressure situations.To determine deposition quantity an... see more
F. Halleen,P.H. Fourie
The aim of this study was to compare 11 treatment regimes (TR) in grapevine nurseries in order to eradicate trunk pathogens. Grapevine propagation material was subjected to treatments before cold storage, before and after grafting, before planting and aft... see more
M.C. Lerena,M.C. Rojo,S. Sari,L.A. Mercado,S. Krieger-Weber,M. Combina
The current market requirements to obtain wines with enhanced complexity and varietal character proposethe finding of new microorganisms capable of driving the malolactic fermentation (MLF) and contributingto new and distinctive sensory profiles in wines.... see more
R. Guzzon,S. Moser,S. Davide,T.R. Villegas,M. Malacarne,R. Larcher,T. Nardi,P. Vagnoli,S. Krieger-Weber
Malolactic fermentation (MLF) is a key feature in the production of high-quality wines. Its evolution isnot always guaranteed, especially in white wine, due to certain limiting factors (low pH, sulphur dioxide,low temperature) acting against malolactic ba... see more
P.B. Shi,T.X. Yue,L.L. Ai,Y.F. Cheng,J.F. Meng,M.H. Li,Z.W. Zhang
The phenolic compounds in the grape skins of Cabernet Sauvignon (CS), Merlot (ML), Syrah (SY) and Marselan (MS) from Shacheng, in China, were compared using HPLC-MS/MS. The results showed that the types and levels of phenolic compounds varied greatly with... see more
A. Trani,V. Verrastro,R. Punzi,M. Faccia,G. Gambacorta
The aim of this study was to characterise the phenol, anthocyanin, volatile and sensory profiles ofPrimitivo wines. The wines were produced in three wineries located in the Gioia del Colle PDO (ProtectedDesignation of Origin) area (Southern Italy – Apulia... see more
G. Hailemichael,A. Catalina,M.R. González,P. Martin
The aims of this work were (i) to study the relationships between leaf water potential, foliar chlorophyllcontent and photosynthetic performance of grapevines under field conditions, and (ii) to evaluate thefeasibility of chlorophyll fluorescence paramete... see more
Poor control of fruit and foliar diseases in vineyards is often attributed to insufficient spray depositionof susceptible tissue. To optimise spray deposition, a deposition assessment protocol using fluorometry,photomicrography and digital image analyses ... see more
Y.-Q. Wang,D.-Q. Ye,P.-T. Liu,L.-L. Duan,C.-Q. Duan,G.-L. Yan
The effects of adding branched-chain amino acids (BCAAs, including L-valine, L-leucine and L-isoleucine),L-phenylalanine and a mixture of them (BCAAs + Phe) on the fermentation profiles of wine yeastEC1118 and the production of volatile compounds were inv... see more
S.J. Bekker,J.E. Hoffman,S.M. Jacobs,A.E. Strever,J.L. Van Zyl
Heuweltjies are unique landscape features putatively created by the termite Microhodotermes viatorthrough their burrowing and nest-building activities. They have been closely examined in the naturalveld of the Western Cape in the recent past and are the f... see more
C. Intrieri,I. Filippetti,G. Allegro,G. Valentini,C. Pastore,E. Colucci
Vine basal shoot leaves are known to be the primary nutritional source for fruit set at the onset of bloom.The effectiveness of mechanical removal of this foliage at that date was tested from 2012 to 2014 to controlthe cropping of high-yielding cv. Sangio... see more
G. Williams,J. van Wyk,C. Hansmann
The adaptation of existing technologies toward producing a white wine style alcoholic fermented plum beverage was undertaken. The Independent Variables (ID) were yeast strains (Saccharomyces cerevisiae VIN13 and Saccharomyces bayanus N96), with formulatio... see more
C.L. Howell,P.A. Myburgh,E.L. Lategan,C. Schoeman,J.E. Hoffman
Re-use of winery wastewater for irrigation was investigated in a field trial with micro-sprinkler irrigated Cabernet Sauvignon/99Richter in the Breede River Valley region of South Africa. Irrigation with winery wastewater diluted with river water to 100, ... see more