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Preventing and limiting the spread of crown gall in vineyards

Published in Scientific Papers. Series B. Horticulture, Vol. LVI
Written by Diana E. VIZITIU (BĂLĂŞOIU), Liviu C. DEJEU, Ion RĂDULESCU, Carmen F. POPESCU

Crown gall, produced by Agrobacterium vitis and Agrobacterium tumefaciens is a very dangerous disease that significantly reduces the growers. income. The pathogen attacks the roots, trunks and arms of vines, reduces plant vigour and finally decreases yield. Systemic survival of bacteria in vines and its spread into tissues plants represent the main difficulties to control this disease in vineyards. The aim of this review was to present the main feature of this pathogen and preventive measures recommended to be applied in vineyards and grapevine nurseries aiming to reduce its spread. In order to avoid bacteria invasion by grafting or cuttings is compulsory to detect and identify the presence of the pathogen in plants and soil (nurseries, plantations). The phytosanitary inspection in mother plantations is the safest procedure to prevent the spread of crown galls of grapevines. After removing the infected plants and their burning, is absolutely necessary to disinfect the soil to destroy the survival bacteria.

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