Table grape rootstocks in South Africa

Figure 3 provides evidence that in recent years P 1103 has become more popular to the detriment of R 110. The

demand for Ramsey remained relatively constant, while the demand for US 8-7 did not increase and remained low.

P 1103

RAMSEY

R 110

US 8-7

100 90 80

70 60 50 40 30 20 10 0

AVAILABLE VINES (%)

2012

2013

2014 YEAR

2015

2016

FIGURE 3: Trends of available certified table grape vines according to rootstock type (2012-2016).

Source: Compiled from data made available by PlantSA

Trends in rootstock use for two of the most planted table grape cultivars in South Africa

R 110 initially increased gradually with Crimson Seedless plantings (a naturally vigorous scion cultivar). P 1103 then became more popular – initially at the expense of Ramsey, but later mainly at the cost of R 110 (Figure 4).

The demand for Ramsey remained relatively constant, while the demand for US 8-7 did not increase and remained low. Prime (moderately vigorous scion cultivar) is virtually only used in combination with Ramsey and there is currently no indication that this is going to change (Figure 5).

14 Table Grape Rootstocks in South Africa