Influence of Some Herbicides on the Chemical Composition of Cabernet Sauvignon Grapes and Wine

Tekirdag Viticulture Research Institute Pub Date : 2022-01-31 DOI:10.52001/vis.2022.9.33.43

T. Yoncheva, Neli Prodanova- Marinova, Dimitar Dimitrov

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引用次数: 0

Abstract

The influence of the herbicides Pledge 50 VP, Lumax 538 SK and Guild, applied in a vineyard of Cabernet Sauvignon variety on the chemical composition of the grapes and the obtained wines was investigated in this study. The study was carried out in the period 2017-2019 with monitoring of the weather factors over the years. The treatment with herbicides was performed on an annual basis, during the last week of May, as they were introduced into the intra-row stripe once, with a backpack sprayer. For comparison, a non-herbicide treated control variant was used. The treated variants did not exceed the control for the sugar content of the grapes. The sugar ratio decreased in the order Control>V3 Guild>V2 Lumax 358 SK>V1 Pledge 50 VP. The most favorable in terms of sugar accumulation in grapes was 2019. The alcohol content of the wines was in correlation with the sugars in the grapes. Regarding the sugar-free extract in 2017 and 2018, with the exception of the variant treated with Pledge 50 VP, the rest exceeded the control, while in 2019 it had the highest rate. The total phenolic compounds in wines varied from 2.62±0.84 to 2.73±0.93 g L. Their change increased in the order Control

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几种除草剂对赤霞珠葡萄及葡萄酒化学成分的影响

以赤霞珠葡萄为研究对象，研究了在赤霞珠葡萄园内施用的三种除草剂Pledge 50 VP、Lumax 538 SK和Guild对葡萄和葡萄酒化学成分的影响。该研究在2017-2019年期间进行，监测了多年来的天气因素。在5月的最后一周，每年进行一次除草剂处理，使用背包喷雾器将除草剂引入行内条纹。为了进行比较，使用了未经除草剂处理的对照变体。处理后的变种葡萄的含糖量没有超过对照。糖比递减顺序为:Control>V3 Guild>V2 Lumax 358 SK>V1 Pledge 50 VP。葡萄糖分积累最有利的年份是2019年。葡萄酒的酒精含量与葡萄中的糖有关。在2017年和2018年的无糖提取物中，除了用Pledge 50 VP处理的变体外，其余的都超过了对照，而在2019年它的比率最高。总酚类化合物含量变化范围为2.62±0.84 ~ 2.73±0.93 g l，其变化顺序为Control

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