| Date/Datum |
July 1998 - January 1999 |
| Product/Produk |
Yield-Plus |
| Crop/Oes |
Type/Tipe |
Grapes |
| Variety/Varieteit |
Sultanas, Sunred, Alphons
Lavalee, Dauphine |
| Locale/Plek |
Remhoogte, Riebeek Kasteel, South
Africa |
Rainfall/
Reenval |
Winter/
Winter |
ü |
Summer/
Somer |
|
Ave.
mm pa/
Gem. mm pj |
|
Soil quality/
Grond gehalte |
Excellent/
Uitstekend |
ü |
Good/
Goed |
|
Medium/
Gemiddeld |
|
Poor/
Arm |
|
Normal weather conditions/
Gewone weerstoestande |
Mild. wet winters
Hot, dry summers |
Test period weather
conditions other than normal/
Toets periode weersomstandighede buitengewoon |
Cold spell in early spring which
generally sets crops back in the whole area |
| Cooperator/Samewerker |
Mr D Vlok |
| Type of trial/Proeftipe |
Production Field |
Experimental design/
Proefnemings ontwerp |
2.8 ha Sunred
3 ha Sultanas
2 ha Alphons Lavalee
2 ha Dauphine |
Treated with Yield-Plus
Yields and grades compared with previous
year |
|
| Treatments/Behandelinge |
300 ml when new shoots were 250mm
long
400 ml fourteen days later
400 ml fourteen days later
400 ml fourteen days later
20 % more fertiliser was given to compliment
increased development of the plants |
Applications/
Toedienings |
Qty/Hoeveelheid |
Four, total of 1500 ml |
| Form/Vorm |
Tractor spray |
| Counts/Tellings |
At harvest, number of 4.5 kg boxes
packed |
| Results/Uitslae |
| |
Quality
Grading |
Total
Yield |
| |
Grade
1 |
Grade
2 |
|
| |
1998 |
1999 |
1998 |
1999 |
1998 |
1999 |
Increase |
| Sunred |
3777 (60%) |
11200 (91%) |
2450 (40%) |
1050 (9%) |
6227 |
12250 |
97% |
| Sultanas |
137 (1%) |
14000 (87%) |
9300 (99%) |
2100 (13%) |
9437 |
16100 |
71% |
| Alphons Lavalee |
5050 (83%) |
6500 (93%) |
1000 (17%) |
480 (7%) |
6050 |
6980 |
15% |
| Dauphine |
1489 (37%) |
5000 (86%) |
2500 (63%) |
800 (14%) |
3989 |
5800 |
45% |
|
| Conclusion/Gevolgtrekking |
Both yield and quality were
substantially improved upon compared to the
previous year.
Grape producers in the area (not Yield-Plus
treated) experiencd problems with quality and
lower yield.
The treated crops were harvested between one and
two weeks earlier than the rest of the area. |
Special comments/
Spesiale opmerkings |
The increased quality and earlier
harvest enables Mr Vlok to realise approximately
R 15 per box more than the average |
| Notes/Notas |
|