Winetech Technical Yearbook 2022

REGION: COASTAL District: Paarl Site: Klipvlei Soil description: Heavy clay Vineyard irrigation: Drip Sowing date: May Sowing method: Planter Harvested: Late August 2021

Seeding rate (kg/ha)

DMP (t/ha)

Variety/species

Plot

Type

Observations

Barsaia saia oats Haymaker grazing vetch Total mix

Cereal Legume

25 7 32

1.4 0.0 1.4

Weeds

3.1

1

Re-growth/“opslag”

3.0

This mix did not perform well in 2021 due to high weed pressure and emergence of cereals from the previous season. The previous season this mix pro duced an excellent stand. Cost: R795/ha

Barpower forage rye Tajuna fodder radish Azuro bitter lupines Total mix

Cereal Brassica Legume

30 2 20 52

2.0 1.4 0.0 3.4

Weeds

0.0

2

Re-growth/“opslag”

0.0

Average performance of this mix this season compared to the previous season. Weed suppression was good. Cost: R885/ha

Moby forage barley Venice white mustard Arvika forage peas Total mix

Cereal Brassica Legume

30 2 20 52

6.7 2.0 0.1 8.8

Weeds

0.0

3

Re-growth/“opslag”

0.4

This mix was the best performer at this site, producing over 8 t/ha DM, largely due to the successful growth of the forage barley. The forage peas per formed poorly. Weed suppression was excellent. Cost: R830/ha

* DM = Dry Matter Production (tons/hectare)

REGION: BREEDE RIVER VALLEY District: Worcester Site: Cilmor Soil description: Sandy Vineyard irrigation: Drip Sowing date: Middle - late May Sowing method: By hand Harvested: Late September 2021

Seeding rate (kg/ha)

DMP (t/ha)

Plot

Variety/species

Type

Observations

Barforce silage barley Moby forage barley

60

7.9

Cereal

1

0.0

Weeds

This mixture consisted of two types of barley which provided dense growth and quick coverage to overshadow weeds. Cost: R550/ha

85

WINETECH TECHNICAL YEARBOOK 2022