Excess vigour is a problem in cool climate vineyards in Australia due to high soil N-fertility. High and low vigour blocks in three cool climate vineyards in Victoria, Australia, was surveyed. The relationship between soil N-fertility and grapevine vigour was tested. Vine vigour was reflected in measured internode length and leaf petiole N content. The average daily N-mineralization rate from soil organic matter (SOM) varied among the sites. Laboratory incubations revealed a positive relationship between soil total N content and average daily mineralizable-N in most sites. However, there are other factors involved in promoting excess vigour those to be taken into account.
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Balachandra et al. (2009) studied this question.
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