COVER CROPS in South African Vineyards

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CHAPTER 8 EFFECT OF COVER CROPS ON GRAPEVINE NUTRITION AND PERFORMANCE

trol

2,50

2,00 Root density in millimetre per centimetre 3 Control August Control November 1,50 1,00 0,50 0,00

0–150

150–300 300–600

Slashed

Control August

Control August

Control November

Mechanical control

Triticale

Grazing vetch Perennial

No cover crop

dwarf fescue

FIGURE 8.8. Grapevine root distribution by soil layer in cover-crop treatments and controls in the Breede River valley. Adapted from Brink (2007). er er

trol

1,80 1,60 1,40 1,20 1,00 0,80 0,60 0,40 0,20 0,00 Root density in millimetre per centimetre 3 Control August Control November

Vine row Work row

Slashed

Control August

Control August

Control November

Mechanical control

Triticale

Grazing vetch Perennial

No cover crop

dwarf fescue

FIGURE 8 .9. Grapevine root distribution in the vine row compared to the work row in cover-crop treatments and controls in the Breede River valley. Adapted from Brink (2007).

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