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Partial rootzone drying

A special form of application of the artificial irrigation of vine plants (dt "partial root dehydration"). The process, also referred to as "mutual irrigation," has been adopted by the Australian University of Adelaide and the Research Institute CSIRO from the mid-1990s for the viniculture developed. Starting from the fact that is a water stress have limited or positive effects on the quality of the wine, or impact, tests have been vines carried out. The roots were split and half dried out. The half thus treated produced the hormone on a larger scale abscisic acid (ABA), leading to a (desired) reduced growth of shoots led.

To substantiate the test result, were in large scale in a vineyard with Cabernet Sauvignon by Rows of vines installed two drip irrigation lines, which were used alternately. The other root part of the vines was dried out. The procedure resulted in the yield kept constant and the quality of red wine was improved. A similar form is Regulated deficit irrigation , in which the vines are offset against partial water drying in partial water stress. The procedure is very common among red wine grapes during the crucial phase of fruit development fruit set and veraison applied. The undersupply with water results in smaller and thus more rich in extracts, better quality berries.

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