In this study, ochratoxin A (OTA) occurrence in Argentinean musts, wines and dried vine fruits was evaluated, alongside with the performance of OchraStar(TM) columns for OTA extraction. In all the three matrices analyzed, the OchraStar(TM) columns showed good performance. The analysis of natural occurrence of OTA in the red must and the red wine samples showed low incidence with low levels of m...

Ground-based proximal sensing of vineyard features is gaining interest due to its ability to serve in even quite small plots with the advantage of being conducted concurrently with normal vineyard practices (i.e., spraying, pruning or soil tilling) with no dependence upon weather conditions, external services or law-imposed limitations. The purpose of the present work was to test performance of...

in order to investigate the effect of application methods of znso4 on qualitative, quantitative and correction of zinc deficiency in grapevine, an experiment was conducted in completely randomized block design with 10 treatments and 4 replications. treatments included control, trunk injection three levels 1.5, 3 and 5 g/l, spray in three levels 1.5, 3 and 5 g/l and soil application (soil drench...

S. Afr. J. Enol. Vitic., Vol. 36, No. 2, 2015 Corresponding author: E-mail address: [email protected] Acknowledgements: The author wishes to thank Levocia Williams and Lydia Maart of the Pest Management Division at the ARC Infruitec-Nietvoorbij for technical assistance, and Marika van der Merwe and Elize Jooste of the ARC-Plant Protection Research Institute for the PCR analyses. Funding for...

Recently, several copula-based approaches have been proposed for modeling stationary multivariate time series. All of them are based on vine copulas, and they differ in the choice of the regular vine structure. In this article, we consider a copula autoregressive (COPAR) approach to model the dependence of unobserved multivariate factors resulting from two dynamic factor models. However, the pr...

Despite their potential benefits, cover crops in vineyards under to Mediterranean climate conditions are still not widespread, especially the vine row. This under-vine space is normally kept weed-free through application of herbicides and/or tillage. In this work, we evaluate effect a Trifolium fragiferum L. crop (UV) on soil quality, as reflected by variety physical, chemical, and biological i...

This brief article describes our contribution to the EVALITA 2009 Parsing Task, dependency track. The TUT and ISST treebanks are augmented with additional features. MIRA is used to find a weight matrix suited for the Covington algorithm, which is subsequently skewed by discriminatively learned hard constraints on dependency lengths. Our skewed algorithm is linear time and thus asymptotically fa...

The finance literature provides substantial evidence on the dependence between international bond markets across developed and emerging countries. Early works in this area were based linear models multivariate GARCH models. However, limitations of these paper re-examines non-linearity, tail structure government US, UK, Japan, Germany, Canada, France, Italy, Australia Eurozone, from January 1970...

In Greece, kiwifruit is grown in areas characterized by high temperatures during the summer months, with solar radiation, especially period of shoot growth and fruit maturation. Therefore, impact heat stress crucial. The objective present study was to evaluate effect pre-harvest alleviating products’ application field on yield quality attributes ‘Hayward’ before after storage. To achieve this, ...