Table grape rootstocks in South Africa

RICHTER110

V. berlandieri x V. rupestris Synonym(s): R 110 and 110 R

Origin: Bred by F. Richter in France, in 1902

GENERAL CHARACTERISTICS Tolerances relating to: Phylloxera: Very good. Nematodes: Moderate (2) against root-knot and dagger nematodes. Phytophthora : Moderate; better than R 99, but not recommended for soils that remain wet for long periods after irrigation or rain. Crown gall: Moderate. Wet soils: Sensitive to fairly resistant.

• Currently, the second most planted rootstock used in established table grape vineyards. • In new plantings, currently the second most popular rootstock following P 1103.

CULTIVATION CHARACTERISTICS

Compatibility: Very good; sometimes poor results are obtained with bench and aerial grafting. Grafting more problematic than with R 99. Affinity: No problems known or observed in trials. Rooting: Good. Vigour if not grafted: Good (1) . Vigour if grafted: Widely considered as being good, but less vigorous than R 99; local table grape trials indicated differences between scion cultivars. Petiole nutrient status tendencies: Low Na, Mn, Mg and Fe uptake (1) .

Dry soils: Very good (3) . Saline soils: Moderate. Calcareous soils: Good.

GENERAL: • Since the year 2000, the popularity of R 110 has increased at the expense of R 99. This is mainly attributed to the pursuit of better quality grapes. • Currently the third most popular rootstock in the country, preceded by P 1103 and Ramsey for new plantings. • Currently the second most popular roostocks being planted.

28 Table Grape Rootstocks in South Africa