Table grape rootstocks in South Africa

4 Adaptability of rootstocks to soil conditions (physical, chemical and biological) as determined in trials for the period 1989-2016

TABLE 5. Performance of rootstocks regarding production as influenced by biological characteristics of soils in different trial blocks

Region/Site Scion Cultivar

Best group

Intermediate group

Weakest group Soil potential

Western Cape Hex River Valley region, Hex River Experimental Farm, De Dooms Sunred Seedless (1) SO4 and Dog Ridge

P 1103, R 99, Ramsey and R 110 Ru 140

High High

Bonheur (1)

Ramsey

Dog Ridge, Ru 140, SO4, R 99, R 110 and P 1103

Barlinka (1) Bellevue (1)

SO4

Ru 140, R 99 and Dog Ridge P 1103 and R 110 High

SO4, 101-14 Mgt, Ramsey, Dog Ridge and P 1103 SO4, 101-14 Mgt, Ramsey, Dog Ridge and P 1103 Dog Ridge, Harmony, SO4 and Ramsey

R 99, R 110, SO4 and P 1103

High

Dauphine (1)

Ru 140, R 110 and R 99

High

Regal Seedless

US 8-7, Freedom, Ru 140, P 1103 and R 110

R 99

Medium

Malanot/La Ferme Derik, Agter Paarl Regal Seedless (2)

R 99, Ramsey and R 110 Ru 140, SO4, Freedom, P 1103 and US 8-7

Harmony

Medium-high

White Gem (3)

R 110, Ramsey, Ru 140 and Freedom

R 99, P 1103 and SO4

Harmony and US 8-7 Medium-high

Nietvoorbij Experimental Farm, Stellenbosch Sunred Seedless SO4, R 99 and P 1103

Ru 140, R 110, Ramsey, Dog Ridge and Freedom

143 B Mgt and Harmony

Medium

Northern Cape Lower Orange River region Fulham, Blouputs Prime (4) Ramsey

Freedom, SO4, Ru 140, R 99 and R 110

143 B Mgt and P 1103 Medium-high

Kromhout, Kakamas Prime (4)

SO4, Dog Ridge, R 110, Ramsey and P 1103

R 99

Ru 140 and 143 B Mgt Medium-high

Crimson Seedless (4) US 8-7, R 110, Ramsey, Ru 140, SO4 and P 1103

P 1103

143 B Mgt and R 99 Medium-high

Rooiwal, Kakamas Crimson Seedless (4) SO4, US 8-7 and Ramsey Ru 140, P 1103 and R 110 143 B Mgt, Dog Ridge and R 99

Medium-high

46 Table Grape Rootstocks in South Africa