FERTILISATION GUIDELINES FOR THE TABLE GRAPE INDUSTRY

FIGURE 16: Fe deficiency symptoms are general yellowing of leaves, which may later become albino-like and scorch. (Photo: D. Saayman). Fe deficiencies in grapevines are not common in South Africa due to the absence of free lime in most vineyard soils, as well as the relatively good resistance of the grapevines thereto on calcareous soil. It is however, found localised in calcareous or soils with high pH values in the Breede River, Olifants River and Lower Orange River Valleys (Figure 17).

FIGURE 17: Yellowing of individual Hanepoot vines in the Vredendal area, due to Fe deficiency (Photo: D. Saayman).

66 | MAINTENANCE FERTILISATION