Grapevine root distribution in drip and microsprinkler irrigation

Scientia Agricola

Luis Henrique Bassoi²  Jan W. Hopmans¹  Lúcio André De Castro Jorge¹  Cristina Miranda De Alencar¹  José Antonio Moura E Silva² 

[1] ,Embrapa Semi-ÁridoPetrolina PE ,Brasil

关键词: Vitis vinifera L.;    root system;    digital image;    Vitis vinifera L.;    raízes;    imagem digital;   

DOI  :  10.1590/S0103-90162003000200024

来源: SciELO

【 摘 要 】

Grape (Vitis vinifera L.) yield and its quality are dependent of the status of the root system. Root distribution information is also valuable for soil and water management. An analysis of methods to evaluate the root distribution of grapevines for both, drip and microsprinkler irrigation in a Typic Acrustox is presented for the table grape cv. Italia grafted on the rootstock IAC-313, in northeastern Brazil. Measured root parameters using the monolith method were root dry weight (Dw) and root length density (Lv), while root area (Ap) was estimated using the soil profile method in combination with digital image analysis. For both irrigation systems, roots were present to the 1 m soil depth and extended laterally to 1 m distance from the trunk, but grapevines irrigated by microsprinkler showed greater root presence as the distance from the trunk increased. Values of Ap were reasonably well correlated to Dw and Lv. However, correlation values were higher when fractional root distribution was used. The soil profile method in combination with image analysis techniques, allows proper grapevine root distribution evaluation.

【 授权许可】

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