Agabbio, Mario Carlo Salvatore and Frau, Antonio Maria (1978) Inerbimento negli agrumeti: nota 2.: effetti sullo sviluppo del sistema radicale. Studi sassaresi: organo ufficiale della Società sassarese di Scienze mediche e naturali. Sez. 3: Annali della Facoltà di Agraria dell'Università di Sassari, Vol. 26 , p. 169-179. ISSN 0562-2662. Article.
The following four different treatments were compared during ten years in a Valencia Late orange orchard: A) grassing-down in the rows; B) grassing-down between the rows; C) total grassing-down; D) tillage. In treatments A-B-C festuca (cv Manade) was used as herbaceous species. In all farm trials the rootstock was sour orange. Several charactcristics of canopy growth and root-systems distribution in the soil were observed. Results have shown some differences between the four treatments tested. The best growth habitus and root-system distribution, with a rich number of principal and fibrous roots, were found in treatments B and D in which root-systems were however injured by tillage.
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