Table grape rootstocks in South Africa

FREEDOM

Origin: Bred by J.H. Weinberger and F.N. Harmon, USA, released in 1974

1613 Couderc x Dog Ridge Synonym(s): None

GENERAL CHARACTERISTICS Tolerances relating to: Phylloxera: Moderate. Nematodes: Good against root-knot nematodes; susceptible to dagger and ring nematodes (2) . Phytophthora : No information and/or data available. Crown gall: Moderate. Wet soils: No information and/or data available. Dry soils: Moderate (4) . Saline soils: Poor. Calcareous soils: Moderate (4) .

• Performs well in terms of production and quality. • Should be evaluated semi-commercially for table grapes. CULTIVATION CHARACTERISTICS Compatibility: Good. Affinity: No problems known or observed in trials. Rooting: No information and/or data available. Vigour if not grafted: Good to very good (1) . Vigour if grafted: Moderate to poor, but mostly better than Harmony according to the results of local trials. Petiole nutrient status tendencies: High K uptake (1) .

GENERAL: • Long-term research trials results under local conditions show that Freedom performs well to moderately well in relation to the production of table grapes. • Trials were conducted in a range of soils (sandy loam and loam), climatic (Western Cape and Lower Orange River region) and cultivation conditions.

40 Table Grape Rootstocks in South Africa