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Article Dans Une Revue Journal International des Sciences de la Vigne et du Vin Année : 2011

A comment on inter-field spatial extrapolation of vine (Vitis vinifera L.) water status

Résumé

Aim: Recent work has identified strong inn-field relationships of pre-dawn leaf water potential (Psi(PD)) between paired sites. This study investigates if these relationships exist at the inter-field level when soil types between fields are constant or different in a vineyard in Southern France. Method and result: Nine fields were sampled for Psi(PD) on 6 dates over two growing seasons. When general assumptions of uniformity in climate. growing conditions and soil moisture were able to be met, a linear relationship between the mean Psi(PD) responses of different fields was observed. The relationship was no longer linear when the soil moisture regime between fields differed. Conclusion: The results indicate that it should be possible to extrapolate a reference Psi(PD) value across a production region (syndicate/co-operative) defined on a similar soil type. Significance and impact of study: These intra-field relationships may minimise the need for Psi(PD) sampling to define irrigation/crop management in areas planted to similar soil types. The poor fit between fields with differing soil moisture regimes indicates that the original intra-field model may be flawed in larger fields or vineyards with heterogeneous soil moisture conditions.
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Dates et versions

hal-01506230 , version 1 (12-04-2017)

Identifiants

  • HAL Id : hal-01506230 , version 1
  • PRODINRA : 202790
  • WOS : 000292414300006

Citer

James Taylor, César Antonio Acevedo-Opazo, Serge Guillaume, Hernan Ojeda, Bruno Tisseyre. A comment on inter-field spatial extrapolation of vine (Vitis vinifera L.) water status. Journal International des Sciences de la Vigne et du Vin, 2011, 45 (2), pp.121-124. ⟨hal-01506230⟩
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