Background and Aims Previous work has indicated that patterns of within‐vineyard variation in vine vigour are stable in time and, in the case of spur‐pruned vineyards, closely match patterns of variation in yield. However, whether this yield : vigour interaction also occurs in cane‐pruned vineyards is uncertain. This work sought to better understand this issue in support of efforts to improve yield estimation in cane‐pruned Marlborough Sauvignon Blanc. Methods and Results Vine vigour, measured as pruning mass, trunk cross‐sectional area and using remotely sensed imagery, and the components of yield were measured in a 5.9 ha Marlborough Sauvignon Blanc vineyard on vines which had been pruned to retain either two or four canes. The results suggest that whereas patterns of variation in vine vigour are stable in time, and related to variation in the land underlying the vineyard, patterns of yield variation are neither temporally stable nor related to variation in vine vigour or the inherent underlying characteristics of the block. Conclusions For all practical purposes, variation in the yield of Marlborough Sauvignon Blanc within vineyard ‘zones’ identified on the basis of variation in vine vigour or soil properties can be regarded as random. Nevertheless, given a diversity of product offering, and because variation in vigour can have a marked impact on fruit composition, remotely sensed indices of vigour do provide a valuable basis for targeting sampling or sensor deployment aimed at yield estimation. Significance of the Study This work highlights the need to differentiate between spur‐ and cane‐pruned vineyards in considering how vineyard variability should be assessed, and how the tools of precision viticulture and targeted management are applied.

中文翻译：

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马尔堡长相思葡萄园中葡萄树活力和产量的时空变化

背景和目标 先前的工作表明，葡萄园内葡萄树活力的变化模式在时间上是稳定的，并且在直剪葡萄园的情况下，与产量的变化模式密切匹配。然而，这种产量：活力相互作用是否也发生在甘蔗修剪的葡萄园中是不确定的。这项工作试图更好地理解这个问题，以支持改善甘蔗修剪的马尔堡长相思的产量估算。方法和结果 在 5.9 公顷 Marlborough Sauvignon Blanc 葡萄园中测量葡萄树活力，以修剪质量、树干横截面积和使用遥感图像测量，并测量了产量的组成部分，该葡萄园的葡萄树已被修剪以保留两个或四个藤茎. 结果表明，虽然葡萄树活力的变化模式在时间上是稳定的，并且与葡萄园下面土地的变化有关，产量变化的模式既不是时间稳定的，也不是与葡萄树活力的变化或区块固有的潜在特征有关。结论 出于所有实际目的，根据葡萄树活力或土壤特性的变化确定的葡萄园“区域”内马尔堡长相思的产量变化可被视为随机。然而，鉴于产品供应的多样性，并且由于活力的变化会对水果组成产生显着影响，活力的遥感指数确实为目标抽样或旨在产量估计的传感器部署提供了有价值的基础。