by Lourens van Schoor | 1 Jan, 2001 | Viticulture research, Winetech Technical
From the initial planning stages of a farming practice or cellar, until the time when the land is eventually sold again, there are several aspects that may have negative impacts on the environment. For this reason there are numerous laws related to conservation of the...
by Louis Nel | Oenology research, Winetech Technical
Oxygen plays an important role in the winemaking process (e g polymerisation of tannins) and now there is method of mimicking the effect in a more predictable way. This technique is known as micro-oxygenation (MO) and comprises the addition of oxygen by means of a...
by Ancha Zietsman, Marinda Viljoen and Hennie van Vuuren | 1 Dec, 2000 | Oenology research, Winetech Technical
The compound ethyl carbamate or urethane is a versatile carcinogen that can induce cancer in various organisms (Sotomayor and Collins, 1990). It occurs naturally in fermented beverages such as beer, sake and wine and in fermented foods such as olives and yoghurt...
by Lourens van Schoor, Kobus Conradie & Pieter Raath | 1 Nov, 2000 | Viticulture research, Winetech Technical
Computer programmes are generally used to process soil analysis results and make recommendations. However, to be able to interpret the chemical results themselves, grapevine producers require more information. This article provides the most important guidelines...
by HANNO VAN SCHALKWYK | Practical in the cellar, Winetech Technical
Acid in wine is as indispensible as salt in food. However, excessively high acid levels lead to “harsh”, unfinished wines; while too little acid produces “flat” wines. Acid plays a significant role in the vinification process and influences the...
by Niel Hayward | Viticulture research, Winetech Technical
ENVIRONMENTAL MANAGEMENT & POLLUTION PREVENTION BULLETIN INTRODUCTION International markets are becoming increasingly competitive. Current economical, marketing and environ-mental requirements dictate that any production process implemented by your company be more...
by Johan Truter | 15 Sep, 2000 | Practical in the vineyard, Winetech Technical
EVALUATION OF CERTAIN JUDGED PRACTICES Thanks to all participants and panels in charge of the evaluation. Special thanks to the convenors in the various districts for their contribution to the success of the competition. INTRODUCTION Altogether 53 entries were...
by Pedro W. Crous and Elma Carstens | 1 Sep, 2000 | Viticulture research, Winetech Technical
Coniella diplodiella (Speg.) Petr. & Syd., the causal organism of white rot of vine is presently regarded as an organism of quarantine importance to South Africa on all grapevine propagating material as well as fresh fruit imported to South Africa. Not much is...
